WO2001064848A9 - Procede et dispositif de culture cellulaire ou tissulaire - Google Patents
Procede et dispositif de culture cellulaire ou tissulaireInfo
- Publication number
- WO2001064848A9 WO2001064848A9 PCT/JP2001/001516 JP0101516W WO0164848A9 WO 2001064848 A9 WO2001064848 A9 WO 2001064848A9 JP 0101516 W JP0101516 W JP 0101516W WO 0164848 A9 WO0164848 A9 WO 0164848A9
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- culture
- pressure
- cells
- tissue
- tissues
- Prior art date
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Classifications
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M3/00—Tissue, human, animal or plant cell, or virus culture apparatus
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M21/00—Bioreactors or fermenters specially adapted for specific uses
- C12M21/08—Bioreactors or fermenters specially adapted for specific uses for producing artificial tissue or for ex-vivo cultivation of tissue
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/02—Form or structure of the vessel
- C12M23/14—Bags
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
- C12M29/14—Pressurized fluid
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M35/00—Means for application of stress for stimulating the growth of microorganisms or the generation of fermentation or metabolic products; Means for electroporation or cell fusion
- C12M35/04—Mechanical means, e.g. sonic waves, stretching forces, pressure or shear stimuli
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/40—Means for regulation, monitoring, measurement or control, e.g. flow regulation of pressure
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N5/00—Undifferentiated human, animal or plant cells, e.g. cell lines; Tissues; Cultivation or maintenance thereof; Culture media therefor
- C12N5/06—Animal cells or tissues; Human cells or tissues
Definitions
- the present invention relates to tissue and tissue culture technology used for tissue engineering, which is an application of cell tissue engineering or gene therapy, and is used for in vitro culture of cells and tissues necessary for repairing defective tissues in the human body.
- the present invention relates to a method for culturing cells or tissues and an apparatus therefor.
- the first method is to use a material other than the living body, such as plastic, metal, or ceramic, as a means of repairing defective or abnormal parts.
- Alternatives include ceramics for bone, stainless steel, polyethylene resin for joints, and vinyl resin for blood vessels.
- the third is a method of transplanting an organ of another person.
- a repair method which is expected to be put to practical use is a method in which cells or tissues obtained by culturing living cells in vivo or outside of the cells or tissues are used to repair defective sites.
- Current studies have reported that many tissues, such as skin, cartilage, bone, blood vessels, liver, and kidney, have the potential.
- tissue used for repair Since the tissue has the patient's own gene, there is no rejection reaction, and no chemical substances other than biomaterials such as synthetic resin do not adversely affect the living body. Ideal treatment is possible.
- the pump and pressure sensor are disassembled and only the passage of the culture media is taken out and sterilized with chemicals, and the other parts are sterilized with an autoclave and then connected with the pump and pressure sensor. Since it is necessary to assemble the equipment, it is troublesome and there is a high risk of bacterial contamination. In addition, when culturing using an incubator (incubator), pumps and control devices are easily affected by temperature and humidity, and all devices cannot be accommodated in an incubator with a limited capacity. For this reason, the equipment must be assembled with the incubator connected to the outside air in order to pass pipes, power supply, and control wires through the through holes of the incubator.
- the entire system in order to apply pressure to the entire circuit of the culture medium, the entire system must be pressure-resistant, including components such as pumps and piping.
- a high pressure for example, IMPa or more
- the entire structure must have a high withstand voltage structure, and cost up becomes a problem.
- the culture device is configured as shown in Fig. 26. Each element and its function in this culture device will be described.
- the pump 400 plays the role of circulating the culture medium 402. And pressurizes the inside of the culture chamber 404 to apply hydrostatic pressure to the cells 406 or tissue.For example, a pump for liquid chromatography is used, and a control device for flowing a constant flow rate is built in. ing.
- valve 410 When the pressure exceeds the pressure to be applied to the cells 406 or the tissue, the valve 410 opens the valve 410 to release the pressure, and the pressure inside the culture chamber 404 is kept constant. To keep. Depending on the pressure to be applied to the cells 406, select and attach the back pressure 408.
- the culture chamber 404 constitutes a space for culturing cells 406 or tissue, and the culture chamber 404 has a cell 406 or tissue implanted on a scaffold 412 made of a sponge formed of collagen. House things.
- the cells 406 or tissue grow on the scaffold 412 consisting of collagen sponge.
- the pressure sensor 414 detects the pressure in the culture chamber 404, and the pressure monitor 416 displays the detected pressure of the pressure sensor 414.
- the pump 400 is controlled by the detected pressure, and when the detected pressure becomes excessive, the operation of the pump 400 is stopped.
- the culture medium tank 418 is suitable for cells 406 to be cultured or tissue.
- the culture medium 402 is stored, and this culture medium 402 is made of, for example, amino acids, sugars, and salts.
- the culture media tank 4 18 communicates with the outside air through a ventilation tube 4 22 penetrated through the obturator 4 20, and the ventilation filter 4 24 prevents contamination by the outside air.
- This culture device is housed in an incubator that is a closed space. This incubator is a space that creates a comfortable culture atmosphere and is maintained at the optimal temperature, humidity and gas concentration (oxygen and carbon dioxide) for cells and tissues. Then, the culture medium 402 is filled in the circuit 426 by the pump 400 and circulates.
- the pressure in the culture chamber 404 gradually increases, and when the pressure exceeds the set pressure of the knock pressure regulator 408, the back pressure regulator 4
- the valve 410 of 08 opens to discharge the culture medium 402, and the pressure of the culture medium 402 decreases by the amount discharged by the culture medium 402, so the valve 410 closes.
- a constant pressure is maintained, and at the same time, the circulation of a certain amount of the culture medium 402 is repeated.
- this culture apparatus can maintain a constant pressure, it cannot repeatedly increase and decrease the pressure. Since the pressure rise depends on the pump 400, the speed at which the pressure rises depends on the capacity of the pump 400.If the circulation amount of the culture medium 402 is increased, the rise speed becomes faster, and if the circulation amount is set smaller, The pressure rises slowly. Therefore, when the pressure cycle is repeated continuously, to reduce the pressure, as shown in Fig. 27, the bypass valve 428 and the orifice valve are connected in parallel with the back pressure regulator 400. (Needle valve) There is a method of installing a bypass passage 432 provided with 4330.
- each component must be disassembled, cleaned and sterilized, and then the equipment must be assembled, which may result in bacterial contamination after sterilization.
- a sterilization process such as an autoclave (121 ° C absolute pressure 2 atm).
- pumps and pressure sensors use many electronic components, special resins, It is impossible because of the oil. For this reason, at present, the pump and pressure sensor are disassembled and only the passage part of the culture medium is taken out, sterilized by chemicals, and the other parts are sterilized by autoclave and then pump and pressure sensors are removed. The sensor and equipment must be assembled, which is time-consuming and highly susceptible to bacterial contamination.
- Oxygen and carbon dioxide gas is introduced into the culture media through a filter, but it is directly from the surrounding atmosphere, so there is a risk of contamination.
- this culture device is housed in an incubator, but the pump unit II pressure monitor is easily affected by temperature and humidity, and it is difficult to accommodate the pump unit II pressure monitor in the incubator in terms of volume. For this reason, it is necessary to assemble the equipment by connecting the inside and the outside of the incubator through a tube power supply for pipes and control wires through through holes of the incubator.
- the pressure setting must be changed by selecting a back pressure regulator according to the set pressure and incorporating it.To change the pressure setting, it is necessary to replace the back pressure regulator. It is troublesome and has a high risk of bacterial contamination.
- the culture apparatus shown in Fig. 27 cannot set the low pressure side, and even if the pressure can be adjusted to some extent by the orifice valve 430, the set pressure cannot be changed. Changes with the circulation flow rate of the pump 400.
- the temperature, humidity, carbon dioxide concentration, and oxygen concentration in an incubator are set to optimal conditions, and the cells are cultured therein. I have. Incubation using such an incubator is a two-dimensional (2D) culture on a petri dish, and attempts have been made for 3D culture. In such a culture method, it is easy to be contaminated by culture media or cells or tissue bacteria exposed to the outside air, and stable culture is difficult.
- the cells of living organisms are always under physical stimulation, and their stimulation indirectly affects the control of cell metabolism, the cell division cycle, the concentration gradient and dispersion of biological stimulation, etc.
- an object of the present invention is to provide a method for culturing cells or tissues and an apparatus therefor, which realize efficient in vitro culture while preventing contamination. Disclosure of the invention
- an culturing position (culturing chamber) is installed in an environment controlled arbitrarily, such as an environment imitating a living body, and a culturing medium is supplied while holding cells or tissues at the culturing position.
- a culturing medium is supplied while holding cells or tissues at the culturing position.
- the method for culturing cells or tissues of the present invention comprises the steps of: holding cells or tissues of a living body at a specific culturing position (culturing chamber); setting the cells or tissues in an environment imitating a living body; A culture media is supplied to the tissue, and the cell or the tissue is cultured at the culture position.
- a culture media is supplied to the tissue, and the cell or the tissue is cultured at the culture position.
- cells and tissues collected from living organisms are used and cultured in vitro. What is important in this in vitro culture is to prevent contamination and artificially realize a culture environment equivalent to that of a living body, that is, an environment that imitates a living body.
- an in vitro culture of cells or tissues is realized by setting a culture position in an artificially formed environment, holding cells or tissues in the culture position, and supplying a culture medium.
- the environment refers to a living body formed by cells or tissues, and refers to living conditions including internal and external stimuli necessary for maintaining a healthy life.
- the culture medium also contains nutrients necessary for maintaining the life of cells or tissues and growing.
- the supply of culture media provides a physical stimulus to cells or tissue, hydrostatic pressure and flow, which affects cells or tissues due to metabolic functions, division cycles, and the concentration gradients and dispersion of biological stimuli, and As a result, it is possible to culture cells or tissues that are close to the body tissue and that easily fuse with the body tissue.
- the method for culturing cells or tissues of the present invention comprises the steps of: holding cells (5) or tissues of a living body at a specific culturing position (culturing chamber 20); setting the cells or tissues in an environment simulating a living body; A culture medium is continuously or intermittently supplied to the cells or the tissue through a culture circuit (culture circuit unit 4), and a pressure that changes continuously, intermittently, or periodically is applied to the cells or the tissue, and the culture is performed. Culturing the cell or the tissue at a location.
- the setting of the culture position and environment setting are as described above.
- the culture medium is supplied continuously or intermittently to the cells or tissues set in the culture position through the culture circuit.
- the supply of the culture media can be performed continuously or intermittently, and at the same time, contamination can be prevented.
- the living body can be imitated and cells or tissues can be cultured efficiently.
- a desired pressure is applied to the cells or tissue to apply physical stimulus, and the form of the pressure is changed continuously, intermittently, or periodically to imitate a living body.
- the method for culturing cells or tissues of the present invention is characterized by comprising a holding means for holding the cells or the tissues to be cultured at the culture position in a floating state or a non-floating state in the culture medium. That is, experiments have confirmed that it is necessary to maintain the cells or tissues to be cultured in a static state in order to increase the culture efficiency. Therefore, efficient culture can be realized by holding cells or tissues in a floating or non-floating state in a culture medium.
- the method for culturing cells or tissues of the present invention includes: a hydrogel in which the holding means holds the cells or the tissue in a suspended state in the culture medium; or A scaffold that is absorbed by cells or the tissue is used. That is, cells or tissues to be cultured may be held in any manner, and in this case, a hydrogel or a scaffold is an example.
- the hide-mouth jewel is a means for wrapping cells and tissues to be cultured and keeping them in a floating state, and when the culture is completed, the cells and tissues can be taken out from the hydrojewel.
- the scaffold can be composed of a porous body made of a protein, and cells or tissues to be cultured are retained on the scaffold, but absorb the scaffold as nutrients as they grow.
- the method for culturing cells or tissues of the present invention is characterized in that the culture medium contains one or more of various amino acids, sugars, salts or proteins. That is, the culture medium can be used according to the cell or tissue to be cultured.For example, the medium contains one or more of two or more substances selected from various amino acids, saccharides or proteins, or all of them. Can be used.
- the choice of culture media is a key factor in efficient culture and formation of high quality cells or tissues.
- the environment for culturing the cell or the tissue may include a physiological condition of the site of the living body, or age, height, weight, sex, and other information in addition to the physiological condition. Is set according to the unique information for each living body. You. That is, it is most important that cells or tissues used for repairing a part of a living body match the living body, and a culture environment is set using the unique information of the living body as one element.
- the method for culturing cells or tissues of the present invention is characterized in that the environment is set by a gas such as nitrogen, oxygen or carbon dioxide supplied through the culture medium, temperature or humidity. That is, since the environment in which cells or tissues are to be cultured is desirably an environment compatible with living organisms, for example, nitrogen, oxygen, and carbon dioxide are supplied to the culture space, and the temperature and humidity are set to temperatures and humidity suitable for culture. Thus, the living environment is controlled to a desired state.
- a gas such as nitrogen, oxygen or carbon dioxide supplied through the culture medium, temperature or humidity.
- the cell or tissue culture method of the present invention is characterized in that the pressure applied to the cell or the tissue is arbitrarily set according to the site of the cell or the tissue. That is, by applying pressure corresponding to the site of the living body to be repaired, ideal and practical cells or tissues can be formed.
- the method for culturing cells or tissues of the present invention is characterized in that the pressure applied to the cells or tissues is a pressure that changes continuously, intermittently or periodically, or a combination of these.
- the pressure pattern is changed continuously, intermittently, or periodically, and selected or combined to achieve ideal physical stimulation. It affects the concentration gradient and dispersion of biological stimuli, and promotes culture.
- the cell or tissue culture apparatus of the present invention includes a culture unit (culture circuit unit) that includes a culture chamber that houses cells or tissue and supplies a culture medium, and applies pressure to the cells or the tissue in the culture chamber. And a culture medium supply means (culture medium supply apparatus) for intermittently or continuously supplying the culture medium to the culture unit.
- a culture unit culture circuit unit
- culture medium supply means culture medium supply apparatus
- the culture unit accommodates cells or tissues to be cultured in a culture chamber and supplies culture media necessary for cells or tissues that are shielded from the outside air.
- Cells or tissues that are shielded from the open air are protected from bacterial contamination and, as a result, grow into high-quality tissues.
- the cells or tissues are given a desired pressure by a pressurizing means.
- g Cell or tissue cultivation is promoted by being affected by the function, division cycle, concentration gradient and dispersion of biological stimuli.
- the supply form of the culture media to the cells or tissues can be arbitrarily set by the culture media supply means and can be supplied intermittently or continuously.
- the supply form of the culture medium includes one or both of supply of a new culture medium and supply of recirculating the culture medium repeatedly.
- the culture medium can be saved, but in the case of unidirectional supply, it is advantageous in that the concentration of the culture medium can be prevented from changing.
- the cell or tissue culturing apparatus of the present invention is characterized by comprising a control means for controlling the pressurizing means or the culture media supplying means.
- the pressurizing means or the culture media supply means can use various control means such as a force computer which can be arbitrarily controlled, thereby enabling various controls such as feedback control and feedforward control, and program control. It is. Of course, it is possible to take into account human correction control by interruption, and this does not exclude correction control.
- the cell or tissue culturing apparatus of the present invention is characterized in that the pressure applied to the cell or the tissue from the pressurizing means is arbitrarily set according to the cell or the tissue.
- the cell or tissue culture apparatus of the present invention is characterized in that the pressure applied to the cell or tissue from the pressurizing means is increased or decreased at regular intervals, in an intermittent state, continuously repeated at regular intervals. . That is, the pressure pattern can assume any form, and the cell or tissue can be efficiently cultured by selecting the pressure pattern.
- the cell or tissue culture device of the present invention is characterized in that the culture unit can be independently separated from the culture device body. That is, a culture unit having a culture chamber for storing cultured cells or tissues can be separated and detached independently of the culture apparatus main body, thereby transferring the cells or tissues together with the culture unit separated from the outside air.
- the cell or tissue can be protected from contamination by bacteria and the like during the movement.
- the cell or tissue culturing device of the present invention is a device for culturing cells in an enclosed space that is isolated from the outside air. It is characterized by containing a knit. That is, since the closed space is a culture space and is isolated from the outside air, a culture environment can be set by supplying a desired gas, and cells or tissues can be protected from contamination by the outside air.
- the cell or tissue culture apparatus of the present invention is characterized by comprising a gas absorbing means capable of absorbing a gas such as nitrogen, oxygen or carbon dioxide. That is, by supplying gas such as nitrogen, oxygen or carbon dioxide to the culture unit housed in the closed space, and by providing the culture unit with a gas absorbing means, the gas can be applied to cells or tissues.
- a gas absorbing means capable of absorbing a gas such as nitrogen, oxygen or carbon dioxide. That is, by supplying gas such as nitrogen, oxygen or carbon dioxide to the culture unit housed in the closed space, and by providing the culture unit with a gas absorbing means, the gas can be applied to cells or tissues.
- the living environment can be imitated by gas supply and control.
- the cell or tissue culture device of the present invention is characterized in that the closed space is filled with a gas such as nitrogen, oxygen or carbon dioxide. That is, a biological environment can be imitated by filling the culture space formed by the closed space with a gas such as nitrogen, oxygen, or carbon dioxide.
- the cell or tissue culture device of the present invention is characterized by comprising a culture media tank for storing the culture media to be supplied to the culture unit. That is, in order to supply or circulate the culture media required for the culture unit, a culture media supply source is required, and the culture media tank is the supply source. In particular, if the culture media tank is installed in a closed space that is isolated from the outside air, contamination of the stored culture media can be prevented.
- the cell or tissue culture device of the present invention is characterized in that the culture chamber is provided with a pressure-receiving membrane that receives pressure from the outside.
- the pressure-receiving membrane by installing the pressure-receiving membrane, it is possible to apply a pressure stimulus to cells or tissues housed in the culture chamber in a state where the cells or tissues are blocked from the outside air, and to apply a desired stimulation such as a stimulus imitating the biological environment Pressure stimulation can be realized.
- the cell or tissue culture device of the present invention is characterized in that the culture unit has a pressure buffer means. That is, when a part of the culture unit is pressurized, if the pressure is adjusted by pressure buffer means, physical stimulation close to the biological environment can be realized, and the culture of cells or tissues can be promoted. it can.
- a pressure chamber is attached to the culture chamber via the pressure receiving membrane, and water pressure, hydraulic pressure, or air pressure is applied to the pressure chamber. Pressure is applied to the cells or the tissue in the culture chamber. That is, a desired pressurization stimulus can be realized using any of water pressure, hydraulic pressure, or air pressure as the pressure generating means, and a biological environment can be accurately imitated.
- the culture unit may be provided with a liquid supply chamber, and the culture medium supply unit may be configured to include a liquid supply apparatus that pressurizes and sends out the culture medium taken in the liquid supply chamber.
- the culture medium supply means is a means for supplying or circulating the culture medium to the culture unit, and various forms can be envisaged.
- a liquid supply chamber is provided and the liquid supply chamber is provided. If it is configured with a liquid sending device that pressurizes and sends out the taken culture media, a desired liquid sending amount can be set by controlling the applied pressure amount.
- the cell or tissue culture device of the present invention further comprises a pressure relief valve provided in the culture unit, wherein when the pressure of the culture medium exceeds a predetermined pressure arbitrarily set in the pressure relief valve, the pressure relief valve is provided. It is characterized in that it is opened to reduce the pressure of the culture medium. In other words, buffering the pressure applied to the culture medium is extremely important for applying ideal pressurized stimulus to cells or tissues, and as one means, the pressure of the culture medium is controlled by using a pressure relief valve. If the pressure exceeds a certain pressure set arbitrarily set in the pressure relief valve, open the pressure relief valve and reduce the pressure of the culture medium to control the culture medium to an ideal pressure state without contaminating the culture medium. Can be.
- the cell or tissue culture apparatus of the present invention is characterized in that the closed space is provided with a heating means or a humidifying means, and is maintained and controlled at a desired temperature or humidity. That is, the temperature and humidity of the enclosed space in which the culture unit is accommodated can be controlled, and a culture space that matches the biological environment can be formed.
- the cell or tissue culture device of the present invention is characterized by comprising a sound wave generator for applying a sound wave such as an ultrasonic wave to the culture chamber of the culture unit. That is, the living body receives acoustic stimulus from the outside world, and by using a sound wave generator together, the living environment can be acoustically imitated. Further, when cells or tissues to be cultured are injected into the culture chamber, efficient and highly reliable injection can be performed by using ultrasonic waves.
- the cell or tissue culture apparatus of the present invention controls the concentration of gas supplied to the closed space. And a control means for controlling. That is, by controlling the concentration of gas supplied to the closed space by the control means, the living environment can be imitated, and the culturing of cells or tissues can be promoted.
- FIG. 1 is a block diagram showing a first embodiment of the cell or tissue culture method and device of the present invention.
- FIG. 2 is a diagram showing a cell or tissue culturing method and a device therefor.
- FIG. 3 is an enlarged view of a part of a culture circuit unit of the culture device, a culture media supply device, a pressure application device, and a pressure buffer device.
- FIG. 4 is a diagram showing a separated state of the culture device and the culture circuit unit.
- FIG. 5 is a block diagram showing a control device.
- FIG. 6 is a flowchart showing the method for culturing cells or tissues of the present invention.
- FIG. 7 is a flowchart showing initial settings in the cell or tissue culture method of the present invention.
- FIG. 8 is a flowchart showing initial settings in the cell or tissue culture method of the present invention.
- FIG. 9 is a flowchart showing initial settings in the cell or tissue culture method of the present invention.
- FIG. 10 is a diagram showing the pressure in the pressure chamber with respect to the displacement and movement of the pressurizing piston in the pressure applying device.
- FIG. 11 is a diagram showing an adjustment pressure of the pressure relief valve with respect to a displacement of the valve over a period of time.
- FIG. 12 is a timing chart showing an execution mode of the variable pressure culture mode.
- FIG. 13 is a timing chart showing another embodiment of the variable pressure culture mode.
- FIG. 14 shows a second embodiment of the cell or tissue culture method and device of the present invention. It is a figure which shows the front side of the culture apparatus which is 1.
- FIG. 15 is a diagram showing a side surface side of the culture device of FIG.
- FIG. 16 is a diagram showing a part of a culture device main body and a culture circuit unit.
- FIG. 17 is a diagram showing a culture circuit unit separated from the culture device main body.
- FIG. 18 is a partial cross-sectional view showing a part of the main body of the culture apparatus from which the culture circuit unit has been removed.
- FIG. 19 is a partial cross-sectional view showing a pressure applying device in the culture circuit unit.
- FIG. 20 is a partial cross-sectional view showing a culture medium supply device in the culture circuit unit.
- FIG. 21 is a partial cross-sectional view showing a pressure buffer device in the culture circuit unit.
- FIG. 22 is a partial cross-sectional view showing another configuration example of the culture medium supply device in the culture circuit unit.
- FIG. 23 is a diagram showing a third embodiment of the cell or tissue culture method and device of the present invention.
- FIG. 24 is a diagram showing a fourth embodiment of the cell or tissue culture method and device of the present invention.
- FIG. 25 is a diagram showing the pressurization control.
- FIG. 26 is a diagram showing a conventional cell or tissue culture method and its device.
- FIG. 27 is a diagram showing another conventional cell or tissue culture method and apparatus. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 shows a first embodiment of the cell or tissue culture method and device of the present invention.
- a culture apparatus 1 for realizing a cell or tissue culture method is provided with a sealed space 2 as a culture space, and a culture unit for supplying a culture medium 3 to cells or tissues to be cultured in the sealed space 2.
- a culture circuit unit 4 is installed as a bird.
- the culture circuit unit 4 can be set to be detachable and detachable from the main body of the apparatus.
- the culture circuit unit 4 includes a culture media tank 9, a culture media supply device 6, a culture pressurization device 8, a gas absorption device 10, a valve 11, and a branch 13. This branch 13 is provided with a valve 15.
- the culture medium 3 is a carrier that provides nutrients to cells and tissues to be cultured, and is a liquid containing essential amino acids and various amino acids and glucose (saccharides).
- inorganic substances such as N a + and C a ++ may be added, or proteins such as serum may be contained.
- these devices are made of resin materials that have sufficient heat resistance, such as fluororesin, PEEK, high heat-resistant grade polypropylene, silicone, and stainless steel, and do not elute substances that affect the living body. As a result, contamination of the components can be prevented.
- Valves 11 and 15 can be configured with pinch valves, etc.Culture circuit unit 4 closes valve 15 and opens valve 11 to close the loop, opens valve 15 and closes valve 11 As a result, a fully open loop circuit and a partially open loop circuit by opening both valves 11 and 15 together.
- the culture circuit unit 4 may include a gas absorbing portion 41 indicated by a two-dot chain line and a pressure-resistant portion 43 indicated by a solid line, instead of the gas absorbing device 10 partially installed.
- Absorbing part 4 1 absorbs gas filled in closed space 2 into culture media 3, and pressure-resistant part 4 3 secures reliable liquid supply corresponding to the pressurized part of culture media 3 and leaks This is the part that prevents
- the gas-absorbing unit 4 1, for example, leaving in be used C 0 2, 0 2 tube formed by easily elastomeric material passes through the gas in the gas or the like, and the like.
- the culture media tank 9 is a means that is stored in the closed space 2 and stores the culture media 3 necessary for culturing cells or tissues.
- the culture medium supply device 6 is a means for supplying the culture medium 3 to the culture circuit unit 4.
- the culture medium supply device 6 drives the liquid feeding device 12 inserted in the culture circuit unit 4 by the driving device 14, and supplies a predetermined amount.
- the culture medium 3 is supplied to the culture circuit unit 4.
- the culture pressurizing device 8 is a means for pressurizing the cells 5 (FIG. 3) or tissue to be cultured, and includes a pressure applying device 16 and a pressure buffering device 18.
- the pressure applying device 16 attaches a pressure vessel 22 to the culture chamber 20 of the culture circuit unit 4, and applies an arbitrary pressure to the culture chamber 20 by the driving device 24.
- cells or tissues to be cultured are implanted and housed in a scaffold formed of collagen or the like, and isolated from the outside.
- the pressure buffer device 18 reduces the pressure of the culture medium 3 pressurized by the culture pressurizing device 8.
- a pressure relief valve 26 inserted into the culture circuit unit 4 is driven by a driving device 28 to set a maximum pressure for a pressure of the culture medium 3 exceeding a predetermined value, and the maximum pressure is set.
- the pressure of the culture medium 3 exceeds the pressure, the pressure is buffered by releasing the culture medium 3. Further, the pressurized liquid is injected into the pressure vessel 22 from a pressurized liquid injection device 30 attached to the culture pressurization device 8.
- the culture apparatus 1 is provided with a humidity controller 32, a temperature controller 34, and a gas mixing / concentration controller 36, and controls the humidity, temperature, and gas concentration of the atmosphere.
- the operating device 38 is for performing a desired adjusting operation by an administrator
- the control device 40 is a culture medium supply device 6, a culture pressurizing device 8, a pressurized liquid injection device 30, a humidity control. This is a means for controlling various devices such as the device 32, the temperature control device 34, and the gas mixing / concentration control device 36 by an operation input from the operation device 38 or a control program.
- the control device 40 In preparation for culturing, necessary information such as culturing conditions is input to the control device 40 by operating the operation device 38 or the like. In this case, what is required is what pressure should be set for the culture medium 3.
- the setting form is the maximum pressure, the minimum pressure, the pressure gradient such as pressure increase or pressure reduction, the pressurization cycle, and the culture medium 3. Flow rate, culture temperature, culture time, etc. Further, the culture circuit unit 4 selects between a closed loop and an open loop by switching between opening and closing the valves 11 and 15.
- a scaffold 7 such as a collagen sponge is set in the culture chamber 20, and cells 5 (FIG. 3) or tissue to be cultured are implanted on the scaffold.
- the collagen sponge may be formed by freeze-drying the collagen solution in the culture chamber 20.
- the culture medium 3 flows to the culture chamber 20 through the liquid supply device 12, and the culture medium 3 is supplied to cells or tissues to be cultured.
- the supply form of the culture medium 3 may be continuous, intermittent, Is selected.
- the culture chamber 20 filled with the culture medium 3 contains cells or tissues held by a scaffold, and pressure is applied to the cells or tissues from the pressure vessel 22. This pressure depends on the pressure pattern set during the culture preparation. When the pressure applied to the culture medium 3 exceeds the set pressure, the culture medium 3 flows out of the pressure-resistant portion 43 through the pressure relief valve 26, and the pressure is adjusted.
- cells or tissues grow to a desired size in the culture chamber 20. If a collagen sponge is used for the scaffold, the cells or tissue to be cultured will absorb the collagen and the scaffold will disappear by itself.
- hydrogel When a hydrogel is used as the holding means, cells or tissues are held and held in a floating state in the hydrogel.
- the culture medium 3 circulates in the culture circuit unit 4 and the cells or tissues to be cultured are circulated. Is supplied with a culture medium 3. Also, when the valve 11 is closed and the valve 15 is opened to open the culture circuit unit 4 into an open loop, the culture medium 3 flows to the branch 13 side, and the pressurized liquid injection device 30 side, In other words, the culture medium flows to the pressurized water tank 68 (FIG. 2), and fresh culture media 3 can always be supplied to the cells or tissues to be cultured.
- the gas absorbing device 10 or the gas absorbing section 41 of the culture circuit unit 4 absorbs gas such as nitrogen, oxygen, and carbon dioxide from the inside of the closed space 2 into the culture medium 3 flowing therethrough.
- gas such as nitrogen, oxygen, and carbon dioxide from the inside of the closed space 2 into the culture medium 3 flowing therethrough.
- the gas force required for gas exchange in the same manner as described above is supplied to the cells or tissues through the culture medium 3.
- a culture environment imitating a living body is set in a cell or tissue, so that in vitro culture can be performed efficiently without being contaminated by bacteria and the like. That is, the cells or tissues are subjected to physical stimulation by the hydrostatic pressure and flow of the culture medium 3 in the culture chamber 20, and are affected by the metabolic function, the division cycle, and the concentration gradient and dispersion of the biological stimulus. The culture is promoted. In addition, cells or tissues are applied by a pressure applying device 16 It receives a physical stimulus according to the pressurization and the form of pressurization. As a result, culture of cells or tissues is promoted, and tissues close to tissues in the body and easily fused with tissues in the body can be cultured. Further, by partially setting the withstand voltage section 43, the cost required for the withstand voltage structure can be reduced.
- FIG. 2 shows a specific embodiment of the culture device 1
- FIG. 3 shows a part of a culture circuit unit 4 of the culture device 1, a culture media supply device 6, and a pressure application of a culture pressurizing device 8.
- the device 16 and the pressure damper 18 are shown enlarged.
- the culture device 1 has a configuration in which the culture circuit unit 4 is attached and detached, as shown in FIG.
- the culturing apparatus 1 is provided with a closable cultivation room 42, and the opening and closing of a door 270 (FIG. 14) is detected by a door switch 44.
- the culture compartment 42 accommodates a culture circuit unit 4 for supplying a culture medium 3.
- the culture circuit unit 4 includes a culture media bag 48 serving as a culture media tank for storing the culture media 3 via a culture chamber 20, a liquid sending device 12, and a pressure relief valve 26, in tubes 50 A and 50 B. , 50C, 50D, and 50E, which are detachable tube units.
- the tubes 50A, 50D, and 50E are the gas absorbing portions 41 (FIG.
- the tubes 50 B and 50 C are pressure-resistant parts 43 (FIG. 1), which are pressure-resistant tubes that can withstand the pressure of the culture medium 3.
- the tube 50E has a gas absorbing portion 52 that bends the tube 50E to absorb the gas in the culture circuit unit 4.
- the culture media bag 48 is supported by a hook 56 provided with a detection switch 54 as a weight detection means on the wall surface of the culture container 42, and the capacity of the culture media 3 in the culture media bag 48 is the weight thereof. Is detected by the detection switch 54.
- the detection switch 54 detects a decrease in the predetermined weight of the culture media bag 48, the abnormality is notified through display means (display device 232) or a telephone through the control device 40.
- Tubes 50A and 50E between the gas absorbing section 52 and the liquid sending device 12 are provided with a branching medium discharging section 58 in the branch, which is opened and closed by a check valve 59. .
- the check valve 59 is a means for collecting the culture media 3 in the culture circuit unit 4, and is collected from the culture media discharge section 58.
- the culture medium 3 can be subjected to an inspection of its denatured state, that is, whether or not it is contaminated by substances such as bacterial cells, and the like, such as PH, concentration, product, oxygen concentration, and carbon dioxide concentration.
- the cells 5 to be cultured are implanted on a scaffold 7 formed of collagen or the like, and housed in the culture chamber 20 together with the scaffold 7.
- the culture chamber 20 is constituted by a culture vessel 61.
- the culture vessel 61 is detachably attached to the pressure chamber 60 by a plurality of fixing means such as bolts 62. G 3 It is provided strongly.
- the injection port 63 is used for implanting cells 5 to be cultured on the scaffold 7 provided in the culture chamber 20 from outside using a syringe or the like.
- other fixing means such as a clamper may be used.
- the pressure chamber 60 and the culture vessel 61 are sealed with a sealing material such as an O-ring.
- the surface of the culture chamber 20 on the side of the pressure chamber 60 is closed with a pressure receiving membrane 64 to form a closed space, and the pressurized water in the pressure chamber 60 is supplied to the culture chamber 20 via the pressure receiving membrane 64. 6 5 forces
- a pressurized water (liquid) tank 68 is connected to the pressure chamber 60 through a water supply pipe 66, and a running water sensor 70, a pump 80, a bypass valve 82 and a sealing valve 8 are connected to the water supply pipe 66. 4 is provided, and the bypass valve 82 is provided with a bypass pipe 88 having an orifice 86 in the middle. That is, by opening the bypass valve 82 and the sealing valve 84 and driving the pump 80, the pressurized water 65 can be filled from the pressurized water tank 68 into the pressure chamber 60.
- the pressurized water tank 65 Since the pressurized water level in the pressurized water tank 68 is detected by the water level sensor 96, the pressurized water tank 65 is replenished with the pressurized water 65 through the water supply line 94 by opening and closing the water supply valve 92 according to the water level. Therefore, the water level of the pressurized water tank 68 can always be maintained at the optimum water level. Further, a drainage line 98 is branched from a water supply line 66 of the pressurized water tank 68, and at the end of the culture of the cells 5, the drainage valve 100 is opened to release the pressurized water 65 ⁇ .
- the pressure chamber 60 is provided with a collecting pipe 102 directed toward the pressurized water tank 68, and the collecting pipe 102 is provided with a sealing valve 104 and a circulation pump 106. ing.
- the distal end of the recovery pipe 102 is immersed in pressurized water 65 in a pressurized water tank 68. That is, the sealing pump 84 is opened and the bypass valve 82 is closed to drive the circulation pump 106. Then, the pressure inside the pressure chamber 60 is reduced, and air bubbles and the like adhering to the inner walls of the pressure chamber 60 and the pipes 66, 102, etc. can be discharged to the pressurized water tank 68 side.
- the pressurized water 65 in the pressure chamber 60 is supplied from the pressurized water tank 68 to the pressure chamber 60 through the water supply line 66 by the simultaneous driving of the pumps 80 and 106, while the recovery line 1 is supplied. It is also possible to return to the pressurized water tank 68 through 02 and to circulate with the pressurized water tank 68.
- the wall of the pressure chamber 60 is provided with a heater 108, a temperature sensor 110, a pressure sensor 112 and a sound wave generator 114, which heats the contained pressurized water 65 and heats it. A temperature or pressure is detected, and a sound wave such as an ultrasonic wave can be applied to the pressure chamber 60 from the sound wave generator 114 as needed.
- the pressure chamber 60 is provided with a pressurizing piston 1 16 as a pressurizing means so as to be able to advance and retreat, and the pressurizing piston 1 16 is formed by a support cylinder 1 17 protruding from the wall of the pressure chamber 60. It is supported, and is sealed between the support cylinder portion 117 and the pressurized biston 116 by an O-ring 119 serving as sealing means.
- An actuator 120 and a motor 122 are attached to the pressure piston 1 16 as pressure drive means via a pressure spring 1 18.
- the motor 122 is composed of, for example, a stepping motor.
- the rotation of the motor 122 is converted into forward / backward movement by an actuator 120 and is applied to a pressurizing spring 1 18 to apply a pressurizing piston 1 16
- the pressure in the pressure chamber 60 can be increased or decreased in accordance with the forward or backward movement of the pressure chamber.
- a pressurizing piston 116 enters a high pressure is generated.
- the position of the pressurizing piston 1 16 is detected by the position sensor 123, and the detected data is used for controlling the advance and retreat of the pressurizing piston 116, that is, for controlling the pressurizing stimulus.
- the pressure chamber 60 is filled with pressurized water 65, and the pressure applied from the pressurizing piston 116 acts on the pressure-receiving membrane 64 entirely through the pressurized water 65, and the pressure is applied to the pressure-receiving membrane.
- the hydrostatic pressure can be applied evenly to the cells 5 and the tissue from the culture medium 3 through the culture medium 3, and the strain (displacement) can also be applied equally.
- the dynamic range of the pressure change can be increased by controlling the amount of movement of the pressurized biston 116, and fine control from a small value to a large value is possible.
- the movement of the pressurizing piston 1 16 is detected by the position sensor 123 and monitored by the control device 40, and when the movement amount reaches the limit position, it is determined that the culture device 1 is abnormal.
- An alarm output is issued from 40 and a warning is displayed on the display means (such as the display device 2 32 in FIG. 5) connected to the control device 4 or to the administrator via a communication line such as a telephone. Can be announced.
- the liquid sending device 12 that continuously or intermittently sends the culture medium 3 to the culture chamber 20 is a liquid sending chamber having a sending-side check valve 12 4 and a suction-side check valve 12 6 at the inlet and outlet. It is provided with 1 28, and is detachably attached to the culture chamber 42 with a screw 130.
- a liquid sending piston 13 2 is attached to the liquid sending chamber 1 28 so as to be able to advance and retreat, and a sterilizing liquid reservoir 1 34 is provided in the middle of the liquid sending piston 13 2.
- a pressure spring 1 3 6 is installed.
- the O-rings 133, 135 serving as sealing means are provided between the liquid sending piston 132 and the main body of the liquid sending chamber 128.
- the germicidal fluid reservoir 134 is filled with germicides, disinfectants or antibiotics such as penicillin to prevent invasion of bacteria and foreign substances from outside.
- the pressurizing spring 1 36 is housed in a protective cylinder 1 37.
- An actuator 130 and a motor 140 are attached to the rear end of the liquid feeding piston 132 as driving means.
- the motor 140 is composed of, for example, a stepping motor.
- the rotation of the motor 140 is converted into forward / backward motion by the actuator 1/38, and is added to the pressurizing spring 1/36.
- the pressure in the liquid sending chamber 128 increases or decreases in accordance with the advance or retreat of the liquid, and the change in the pressure is applied to the valve elements 144, 144 of the check valves 124, 126.
- the liquid transfer piston 1 3 2 is withdrawn from the liquid transfer chamber 1 2 8, the liquid transfer chamber 1 is drawn by the amount of the liquid transfer piston 1 3 2 drawn out.
- Negative pressure is applied to the inside of 2 8, and the valve 1 4 2 is pulled down by the restoring force of the spring 1 4 3, closing the delivery-side check valve 1 2 4 and applying pressure to the valve 1 4 4 by the spring 14 5.
- the culture medium 3 is sucked into the liquid-feeding chamber 1 28 by being pulled up against the pressure and opening the suction-side check valve 1 26. Also, the liquid feeding piston 1
- the pressure buffer device 18 of the culture medium 3 is provided with a pressure relief valve 26, and the pressure relief valve 26 is detachably attached to the culture container 42 by a screw 144.
- the pressure relief valve 26 is provided with a valve element 150 that can be opened and closed by moving into and out of the valve chamber 144, and a sterilizing liquid reservoir 1 is provided in the middle of the plunger 15 2 of the valve element 150. 5 3 is provided. O-rings 155 and 157 as sealing means are provided between the plunger 155 and the main body of the valve chamber 148.
- the germicidal solution reservoir 153 is filled with a germicide, a disinfecting solution, or an antibiotic such as benicillin to prevent entry of bacterial cells and foreign substances from the outside.
- an actuator 156 as a driving means and a motor 158 are mounted via a buffer spring 154.
- the motor 158 is composed of, for example, a stepping motor. The rotation of the motor 158 is converted into forward / backward movement by an actuator 156 and is added to the buffer spring 154.
- the operating pressure for opening is adjusted according to the degree of compression of the buffer springs 154. That is, when the compression degree of the buffer spring 154 is high, the pressure from the culture media 3 required to open the valve element 150 increases, and when the compression degree of the buffer spring 154 is low. However, the pressure from the culture medium 3 required to open the valve body 150 decreases.
- the pressure buffer device 18 is provided in order to buffer the pressure applied to the culture medium 3 in the culture chamber 20 on the culture circuit unit 4 side.
- a tube 50 D connecting the valve chamber 1 4.8 of the pressure relief valve 26 to the culture media bag 48 is provided with a suction tube 16 4 and a force branch together with the pinch valve 16 2.
- the suction tube 16 4 is provided with a pinch valve 16 6, a check valve 16 8, and a culture media reservoir 170, and the culture media reservoir 170 is collected via a suction tube 16 5.
- the pinch valve 16 2 opens and closes the tube 50 D, and the pinch valve 16 6 is used to open and close the suction tube 16 4.
- the check valve 168 closes the valve element 169 by the pressure of the spring 171, and when the pressure of the culture medium 3 exceeds the pressure of the spring 171, the culture medium 3 Flows through the suction tube 164 to the culture media reservoir 170 side.
- the pinch valve 1 6 6 is operated independently of the check valve 16 8
- the suction tube 16 4 can be closed, and the flow of the culture medium 3 can be blocked by the closing.
- the pinch valve 166 is open, the culture media reservoir 170 is a closed container, so when the sealing valve 104 is closed and the circulating pump 106 is driven, the culture media reservoir 170 Since the internal pressure is reduced, the valve element 169 can be moved against the pressing force of the spring 1 ⁇ 1, and the check valve 168 can be opened. At this time, the culture medium 3 is stored in the culture medium storage 1 It can be retracted to the 70 side.
- N 2 gas cylinders 17 2, 0 2 gas cylinders 17 4, and C 0 2 gas cylinders 176 are provided in the culture chamber 42 as gas mixing / concentration control devices 36, respectively.
- 182, 180, 182, and gas switching valves 184, 186, 188, flow control valves 190, 192, 1 94, Flowme 1960, 1980, 200, Pressure regulators 202, 204, 206 and valves 208, 210, 2122 I have. That is, by selectively opening and closing the gas on-off valves 184 to 188, one or more of N 2 , O 2 or CO 2 is supplied and mixed.
- a humidification water receiving tray 2 16 for storing humidification water 2 14 and a stirring fan 2 18 as a humidity control device 32 serving as humidification means are installed in the cultivation room 4 2.
- a heater 220 for gas heating, a temperature sensor 222 inside the refrigerator, and a fan 218 for stirring are installed.
- the stirring fan 2 18 is driven by a fan motor 2 24.
- the control device 40 continues the heat retention control, the gas concentration control, and the liquid feeding operation in the culture chamber 42. In such a continuous operation, even when a predetermined culturing time has arrived, or when the operation has been normally completed, the heat retention control, the gas concentration control, and the liquid feeding operation in the culture chamber 42 are similarly performed. Let it continue.
- FIG. 5 shows a configuration example of the operation device 38 and the control device 40.
- the operation device 38 and the control device 40 include a main control device 230 constituted by a personal computer or the like.
- the main control unit 230 includes a display device such as a display and a liquid crystal device 232, a hard disk, an optical disk, a floppy disk, and an IC card.
- W 01/64848 a display device such as a display and a liquid crystal device 232, a hard disk, an optical disk, a floppy disk, and an IC card.
- the input device 2 36 constitutes a part or all of the operation device 38.
- the main control unit 230 receives the temperature sensor 110 output through the temperature detection circuit 238, the temperature sensor 222 output through the temperature detection circuit 240, and the pressure detection circuit 242 through the temperature detection circuit 240.
- the detection output of the pressure sensor 112, the detection output of the position sensor 123, and the detection output of the detection switch 54 are added, and the drive output of the motor 122 is driven by the drive circuit 244 and the motor 404.
- the output is the drive circuit 24 6, the drive output of the motor 158 is the drive circuit 24 8, the drive output of the heater 108 is the drive circuit 250, the valve 18 4, 18 6, and the valve 18 8
- the drive output is obtained from the drive circuit 25 2
- the drive output of the fan motor 22 4 is obtained from the drive circuit 25 4
- the drive output of the heater 220 is obtained from the drive circuit 256, and the sound wave generator 1 1 4 Is obtained.
- Step S1 is an initial setting mode.
- the initial setting mode includes a step of filling the pressurized water 65 in the pressure chamber 60 after filling the culture circuit unit 4 and filling the culture medium 3 in the culture circuit unit 4, and a pressure set and input.
- the method includes a step of sampling the amount of operation of the pressure applying device 16 and the pressure buffering device 18 of the culture pressurizing device 8 corresponding to the value, and storing and storing the amount.
- the elongation rates of the materials constituting the culture circuit unit 4 and the pressure receiving membrane 64 are different, and the amount of operation for obtaining the set pressure is different due to bubbles remaining in the pressure chamber 60. Therefore, these settings are corrected in the initial setting mode.
- the gas mixing / concentration control device 36, the humidity control device 32, and the temperature control device 34 are operated to fill the inside of the culture chamber 42 with gas and to adjust the humidity and Control to an appropriate temperature.
- the water supply valve 92 is opened to replenish the pressurized water tank 68 with pressurized water 65 consisting of clean water and the like to the set water level
- the bypass valve 82 and the sealing valve 84.104 are opened
- the pump 80 is opened. It operates to supply pressurized water 65 into the pressure chamber 60.
- the amount of pressurized water 65 supplied to the pressure chamber 60 is detected by the flowing water sensor 70, and when a predetermined amount of pressurized water 65 is detected, the pump 80 is stopped and switched to the circulation operation by the circulation pump 106.
- the bypass valve 82 is closed and the flow path is switched to the bypass pipe 88.
- the flow rate of the pressurized water 65 is restricted by the orifice 86, and the suction force of the circulation pump 106 creates a negative pressure in the pressure chamber 60, and the air bubbles remaining in the pressure chamber 60 are removed from the pressurized water tank 6. It is discharged to the 8 side.
- the pinch valve 16 2 is closed, the pinch valve 16 6 is opened, and the culture medium 3 in the culture medium bag 48 is transferred to the tubes 50 E, 50 A, by the negative pressure generated by the circulation pump 106. Fill the culture chamber 20 through 50B.
- the pinch valve 1666 is closed, the pinch valve 162 and the bypass valve 82 are opened, and the circulating flow is applied. Release the negative pressure and stop the circulation pump 106. Subsequently, after closing the sealing valves 84 and 104, the pressurized water 65 in the pressure chamber 60 is heated by the heater 108 and the temperature is detected by the temperature sensor 110 to control the temperature. To start.
- the motor 158 of the pressure buffer device 18 is operated, the pressure relief valve 26 is closed, and the tube 50C is closed at a constant pressure.
- the pressure applying device 16 is operated by operating the motors 122 until the preset maximum pressure Pmax is detected.
- the pulse count of the motor 122 is stored in the memory of the main controller 230.
- the motor 158 of the pressure buffering device 18 is rotated until the current pressure value decreases, and this pressure value is set to the position of the maximum pressure Pmax, and the pulse force of the motor 158 is used as the main control device 2. Store in 30 memory.
- the motor 12 of the pressure applying device 16 is rotated until a preset minimum pressure P min is detected.
- the pulse count of the motor 122 is stored in the memory of the main controller 230.
- the motor 158 of the pressure buffer device 18 is rotated, and the motor 158 is stopped at the position where the pressure starts to decrease from the minimum pressure P min. At that time, the pulse count of this motor 158 is performed. The value is stored in the main controller 230 memory.
- step S2 determines whether or not the mode is the variable pressure culture mode. That is, it is determined whether or not the culture is performed by periodically changing the pressure. If the pressure is to be changed, the process shifts to the variable pressure culture mode in step S3. If the culture is performed at a constant pressure, the process proceeds to step S7. To the fixed pressure culture mode. In the variable pressure culture mode in step S3, pressurization, pressure holding, depressurization, and pressure holding are repeated at every cycle T to stimulate the cells 5 in the culture chamber 20 under pressure, and the culture medium 3 is sent. .
- step S4 it is determined whether or not the error between the pressure due to the operation of the pressure applying device 16 and the pressure buffering device 18 and Pmax and Pmin is equal to or greater than a predetermined value.
- the process proceeds to step S5 to sample the moving amount of the pressure applying device 16 and the pressure buffering device 18 that match the maximum pressure Pmax and the minimum pressure Pmin. To correct the stored value of the memory of main controller 230.
- step S6 steps S3 to S6 are repeated until a predetermined culturing time t has elapsed, and when the predetermined culturing time t has elapsed, the cultivation is terminated, and the process proceeds to step S11. I do.
- step S7 the cells 5 or the tissue are stimulated by a constant pressure, and the culture medium 3 is sent. That is, in step S8, it is determined whether an error between the pressure caused by the operation of the pressure applying device 16 and the pressure buffering device 18 and the set pressure Ps is equal to or larger than a predetermined value. When an error equal to or more than the predetermined value occurs, the process proceeds to step S9 to sample the movement amounts of the pressure application device 16 and the pressure buffer device 18 that match the set pressure Ps, and store the memory of the main control device 230. Modify the stored value of. Then, in step S10, when the predetermined culture time t has elapsed, the culture is terminated, and the process proceeds to step S11.
- step S11 a living cell storage operation mode is executed. Even if the culture of the cells 5 or the tissue is completed, that is, even if the tissue is generated, it is necessary to store the cells 5 or the tissue in a healthy state until the transfer for transplantation is started.
- the living cell storage operation mode the culture medium 3 is supplied to keep the living cells in a healthy state while maintaining the cells 5 at a predetermined temperature.
- step S12 it is determined whether or not living cells are to be transplanted, that is, whether or not an operation stop command has been input for the transplantation of the tissue composed of the cells 5, and the circulation of the culture medium 3 is performed according to the operation stop command. And stop the temperature control.
- the culture circuit unit 4 is detached, and the cells 5 or tissues are transferred together with the culture circuit unit 4.
- Figs. 7, 8 and 9 show the setting input operation in the initial setting mode.
- the symbols a, b, c, d, and e are connectors in the flowchart separately described, and the coincidence of the symbols a to e is a joint.
- step S21 it is input whether the culture in the culture chamber 20 is performed under periodic pressurization or under a constant pressure.
- the process proceeds to step S24 and "variable pressure" is displayed.
- the flow shifts to step S23 to display “constant pressure”.
- step S25 a cycle T for changing the pressure is input.
- step S26 it is determined whether or not the input cycle T is within the executable range. If the input is out of the execution range, the process proceeds to step S27 and "Re-input cycle T" is displayed. To step S25 and re-enter. If it is within the execution range, the process proceeds to step S28, where the set “cycle T” is displayed and stored in the memory of main controller 230.
- step S29 the holding time t, of the maximum pressure Pmax is input.
- step S30 it is determined whether or not the input time t, is within the operation range of the cycle T.
- step S31 If it is out of the operation range, the flow shifts to step S31 to notify by displaying "re-input of t,” and shifts to step S29 to input again. If it is within the operating range, the flow shifts to step S32 to display "maximum pressure holding time t,” and to store it in the memory of main controller 230.
- step S 3 3 inputs the minimum pressure P min of the retention time t 2.
- step S 3 in 4 input time t 2 determines whether within the operating range of the period T. If the operating range outside the process proceeds to step S 3 5 to display the "re-input of t 2", cormorants to re-enter the process proceeds to step S 3 3. The process proceeds to Step S 3 6 Within the operating range performs a display of "minimum dwell time t 2", the memory of the main controller 2 3 0 of the memory.
- Step S 3 7 In the input period T and time (t, + t 2) The difference time 2 minutes to pressurization, calculates the decompression time t 3.
- Step S 3 at 8 time t 3 determines whether within the operating range.
- Time t 3 is the operating range in the near Rutoki
- the operation time t 3 stored in the main control unit 2 3 0 of the memory "pressure in step S 3 9, displays the decompression time t 3 J.
- Step In S40 an input is made as to whether or not to make a change in acceleration or deceleration during pressurization or depressurization. If it is, move to step S42, and if not, move to step S46.
- step S42 a change amount is input in order to make the speed change during pressurization and decompression.
- step S43 it is determined whether the input change amount is operable. If the operation is not possible, proceed to step S44, display "Re-input of pressurized / depressurized change", and then proceed to step S42 to re-enter. If operable, the flow shifts to step S45 to display "pressurizing and depressurizing amounts" and to store them in the memory of main controller 230. At this time, a simulation screen of the pressure displacement may be displayed.
- step S46 the minimum pressure Pmin is input.
- step S47 it is determined whether or not the pressure applying device 16 is within an executable range. If it is out of the execution range, the flow shifts to step S48 to display "re-input of minimum pressure P min", and re-input is performed in step S46. If it is within the execution range, the flow shifts to step S49 to display "minimum pressure Pmin" and store it in the memory of main controller 230.
- step S50 the maximum pressure Pmax is input, and in step S51, it is determined whether or not the pressure applying device 16 is within an executable range. If it is out of the execution range, the flow shifts to step S52 to display “Re-input of maximum pressure P ma X”, and re-input is performed in step S50. If it is within the execution range, the flow shifts to step S53 to display "maximum pressure P max" and store it in the memory of main controller 230.
- step S54 the control temperature ct of the pressure chamber 60 is input.
- step S55 it is determined whether or not it is within an executable range. If it is out of the execution range, the flow shifts to step S56 to display "re-input of temperature ct", and re-input in step S54. If it is within the execution range, the flow shifts to step S57 to display "temperature ct" and store it in the memory of main controller 230.
- step S58 the circulation flow rate f of the culture medium 3 of the culture circuit unit 4 is input.
- step S59 it is determined whether or not it is within an executable range. If it is out of the execution range, the flow shifts to step S60, a message "reinput of circulating flow rate f" is displayed and notified, and input is performed again in step S58. If it is within the execution range, the flow shifts to step S61 to display "circulating flow rate f" and store it in the memory of main controller 230.
- step S62 the operation time is input.
- step S63 "operation time” is displayed and stored in the memory of main controller 230.
- the amount of movement by the motor 1 2 2 L 2 is the amount of shrinkage of the pressurizing spring 1 1 8
- L 3 is moved in the pressurizing piston 1 1 6 of the case of not using the pressurizing spring 1 1 8 the amount
- L 4 is the amount of movement of the pressure-bis tons 1 1 6 due to contraction of the air are mixed
- L 5 is the amount of movement of the pressure piston 1 1 6 due to shrinkage of the water
- L 6 is the culture chamber 2 0
- pressure The amount of movement of the pressurizing piston 1 16 due to the deformation of the container in the chamber 60 is shown.
- L 3 is a sum of L 4, L 5, L 6 , L, represents the sum of L 2, L 3.
- the relationship between the amount of movement of the pressurizing piston 1 16 by the pressure applying device 16 and the pressure value of the pressure sensor 112 is stored in the memory of the main control device 230.
- the total travel of the pressurized piston 1 16 is the value obtained by adding the equations (1), (2), (3) and (4).
- the liquid feeding pistons 13 and 2 are further moved from that position, and when they move to a position where they cannot be moved, they are returned to their original positions.
- the drop pressure becomes higher than the set allowable value, the data related to the movement amount and pressure of the actuator 15 6 of the pressure relief valve 26 stored before operation is corrected based on this value. There is a need.
- FIG. 12 shows an embodiment of the variable pressure culture mode performed in step S3 of FIG. 12 is a timing chart showing the state of pressure applied to the culture chamber 20 and the timing of pressurization.
- FIG. 12 (a) shows a change in the pressure of the culture chamber 20, and
- FIG. (C) shows the pressurization timing of the pressure applying device 16, and
- (d) shows the liquid sending timing of the culture media supply device 6.
- the culture chamber 20 is repeatedly pressurized and depressurized at a cycle T between a maximum pressure Pmax and a minimum pressure Pmin. Is the time for holding the maximum pressure Pmax, t 2 is the time to hold the minimum pressure Pmi n. Is the operating time during pressurization and decompression.
- These maximum pressure Pma X, the minimum pressure Pm in, time t, t 2, 1 3 can be arbitrarily changed according to the site to be outside the culture raw body.
- pressurization and decompression can be performed by selecting appropriate numerical values according to data such as the age, sex, height, weight, and site in the living body of the cells 5 to be cultured.
- the pressure buffer device 18 Before starting pressurization, the pressure buffer device 18 is operated at time t at the maximum speed to the position where the maximum pressure Pmax can be obtained to close the tube 50C. Thereafter, most at a speed starts the operation of the pressure applying device 1 6 via the delay time of t 4, corresponding to the time t 3 Pressurize from small pressure P min to maximum pressure P max.
- the pressure control When the pressure control is started, the pressure is increased from around 0 to the maximum pressure Pmax. At this time, the pressure buffer 18 moves to the closed position at the maximum speed, and after the time t 9 has elapsed, the pressure applying device 16 is operated, and the time until the maximum pressure Pmax is reached at the speed corresponding to the time t 3 is reached. Pressurize for t.
- FIG. 13 shows another embodiment of the variable pressure culture mode executed in step S3 of FIG. That is, FIG.
- FIG. 13 is a timing chart showing the pressure state applied to the culture chamber 20 and the pressurization timing, where (a) shows the pressure transition of the culture chamber 20, and (b) shows the pressure buffer. 18 shows the operation timing, (c) shows the pressurization timing of the pressure applying device 16, and (d) shows the liquid supply timing of the culture media supply device 6, that is, a modification of the pressure pattern applied to the culture chamber 20. .
- pressurization and decompression time t 3 pressing speed, which the rate of pressure reduction was sending a quadratically variations are allowed pressure application pattern with a regulation by, placing a pace to pressure fluctuations
- a pressure pattern applied to the cartilage of the knee during walking can be reproduced.
- the pressure applying device 16 is operated for time t! 5, t 16, is the operating speed is changed as shown in t 17, regulation is applied to the pressure at time t 3.
- Other operations are the same as the operations in FIG. 12, and thus description thereof is omitted.
- FIGS. 14 to 21 show a second embodiment of the cell or tissue culture device of the present invention
- FIG. 14 is a front side arrangement of the culture device
- FIG. Equipment side Side arrangement Fig. 16 shows the main part of the culture device
- Fig. 17 shows the main part of the culture device excluding the culture circuit unit 4
- Fig. 18 shows the main part of the culture device excluding the culture circuit unit 4
- Fig. 9 shows the application of pressure Apparatus 16
- FIG. 20 shows culture medium supply apparatus 6
- FIG. 21 shows pressure buffer apparatus 18.
- the same parts as those in the first embodiment are denoted by the same reference numerals.
- This culturing apparatus is constituted by a single housing 260, and the housing 260 is divided into a culturing room 262, a machine room 264, and a control and power supply room 266.
- the inside of the culture room 26 2 contains a culture room 42, and the configuration inside the culture room 42 is the same as that of the first embodiment, except that the culture medium supply device 6 and the pressure
- the application device 16 and the pressure buffer device 18 are composed of a single processing unit 268.
- the culture room 26 2 and the machine room 26 4 are provided with doors 27 0 and 27 2 that can be opened and closed independently.
- the machine room 26 4 has a culture media supply device 6 and a pressure application device 16.
- a pressurized water tank 68 and the like are housed together with the mechanism part of the pressure buffering device 18 and the like, and each of the cutout units 120, 13 8 and 15 6 is arranged as shown in FIG. It is supported on the rear side of the machine room 264 by a common mounting plate 269.
- a water supply port 274 and a drain port 276 are provided on the wall of the machine room 264.
- the power supply room 2666 houses a control device 40 and a power supply device, and a power supply switch 2778 is installed on the front panel side together with the display device 232.
- the culture room 26 2 contains a culture room 42, and the culture room 42 contains a culture circuit unit 4 and a processing unit 268 force.
- the processing unit 280 on the culture circuit unit 4 side is configured to be detachable from the processing unit 268.
- FIG. 19 shows a pressure application device 16 including a culture vessel 61 and a pressure vessel 22 constituting the culture chamber 20.
- the actuator 120 of the pressure applying device 16 mounts the ball screw 284 on the housing 282 and couples the motor 122 to the rear end of the ball screw 284. It is connected by joint 286.
- the ball screw 284 is provided with a moving bed 288 that moves back and forth by rotation, and a supporting flange 290 provided on the front end side of the moving bed 288 and the ball screw 284.
- the pressure spring 1 '18 A, 1 1 The compression state of 8B is changed by the moving pad 288 that moves in accordance with the rotation of the ball screw 284, and the elastic properties of each of the pressure springs 1 18A and 1 18B are pressurized. Acts on piston 1 16 side.
- a belt 120 cam or the like may be used to form the actuator 120.
- FIG. 20 shows the culture medium supply device 6.
- a ball screw 292 is attached to a housing 291, and a motor 140 is connected to the rear end of the ball screw 292 by a force coupling joint 294.
- the ball screw 292 is provided with a moving bed 296 that moves back and forth by rotation, and a piston push plate 298 attached to the moving bed 296 has a liquid feeding piston 1 3 2 The rear end is in contact.
- FIG. 21 shows a pressure buffering device 18.
- the actuating unit 1506 has a ball screw 302 mounted on a housing 300, and a motor 158 connected to a rear end of the ball screw 302 by a coupling joint 304. You.
- the ball screw 302 is provided with a moving bed 303 that moves back and forth by rotation, and the moving bed 303 is connected to a buffer spring 1504A and 154B that are superimposed.
- the plunger push plate 308 is attached to the plunger push plate 308, and the rear end of the plunger 152 of the pressure relief valve 26 is in contact with the front surface of the plunger push plate 308.
- the plunger push plate is moved together with the buffer springs 154A and 154B. 308 is advanced, and the compression state of the buffer springs 154A and 154B changes.
- FIG. 22 shows a modification of the culture medium supply device 6.
- the force of the pressurizing spring 13 6 installed on the liquid feeding piston 13 2, except for the pressurizing spring 13 6, Attach the connecting shaft 3 10 to the moving bed 2 96 which is moved by the ball screw 29 2 of the unit 1 38, and attach the liquid feed piston 1 3 2 to the end of this connecting shaft 3 10 May be connected by fixing means such as fixing pins 312. Even with such a configuration, the liquid feed biston 13 2 can be moved forward and backward by the forward and reverse rotation of the ball screw 29 2.
- FIG. 23 shows a third embodiment of the cell or tissue culture apparatus of the present invention.
- the pressurized air is supplied to the pressure regulator 3 14, It is operated through a line 67 provided with a valve 3 16 and a needle valve 3 18, and the pressurized air in the pressure chamber 60 is collected 1 with a needle valve 3 20 and a pressure reducing valve 3 22.
- the valve is opened and closed by the rotation of the actuator 312 in place of the valve 11 (Fig. 1) or the pinch valve 16 2 (Fig. 2) on the tube 50 D side. 3 2 3 may be provided.
- a pressure stimulus can be applied to the cells 5.
- a change can be imparted to the pressurized stimulus by controlling the opening and closing of the pressure increasing valve 316 and the pressure reducing valve 3222.
- the pressure change per unit movement can be reduced at low pressure, the pressure change per unit movement can be increased at high pressure, and the pressure on cells or tissues can be increased.
- the voltage is applied, unnecessary vibrations generated from the module and the like can be absorbed, and the accuracy of the pressure stimulus to cells or tissues can be improved.
- FIGS. 24 and 25 show a fourth embodiment of the cell or tissue culture apparatus of the present invention.
- the cells to be cultured 5 are transplanted to a scaffold 7 formed from collagen or the like, and are stored in the culture chamber 20 for each scaffold 7.
- a culture medium 3 is supplied to the culture chamber 20 from a culture medium tank 49 through a culture circuit unit 4.
- the culture circuit unit 4 forms a closed circuit.
- the pump 4 is provided with a pump 32 4 as a liquid sending device 12, a pressure sensor 32 6 and a pressure buffering device 18.
- the detected pressure of the pressure sensor 326 is applied to the pressure controller 328, and a control output corresponding to the detected pressure is applied from the pressure controller 328 to the pump 324. That is, the pressure P of the culture medium 3 is controlled to be constant.
- the pressure buffering device 18 is provided with a buffer spring 1554 between the plunger 152 of the valve body 150 of the pressure relief valve 26 inserted into a part of the culture circuit unit 4 and an actuator.
- the motor 156 is connected to the actuator 156.
- the rotation of the motor 158 that is, forward rotation, reverse rotation, stop, and rotation speed are controlled by the controller 40.
- the rotation of the motor 158 is transmitted to the ball screw 302, and the rotation of the ball screw 302 moves the moving bed 360 forward and backward according to the direction of rotation.
- This movement is transmitted to the plunger 152 of the valve element 150 through the buffer spring 1554, so that the closing force of the valve element 150 moves.
- Set by the compression force of 54 When the pressure of the culture medium 3 by the pump 3 24 and the closing force of the valve 150 are overcome, the valve 150 is opened and the culture medium 3 passes through the pressure relief valve 26.
- the culture media tank 49 is provided with an air pipe 330 for taking in gas such as oxygen or carbon dioxide.
- the air pipe 330 is a filter for preventing invasion of bacteria, foreign matter, and the like. Is provided. That is, oxygen or carbon dioxide introduced from the air line 330 is transmitted to the cells 5 in the culture chamber 20 together with the culture medium 3.
- the culture medium 3 is supplied to the culture circuit unit 4 and flows through the culture chamber 20, so that the nutrients required for the cells 5 and oxygen or carbon dioxide, etc. Supply gas.
- the culture circuit unit 4 is closed, and the pressure in the culture chamber 20 is increased by the pressure applied to the culture medium 3 from the pumps 32.
- the buffering force of the pressure buffering device 18, that is, the closing force of the valve element 150 an arbitrary pressure value that balances with the pressure applied from the pump 324 can be obtained.
- FIG. 25 shows this pressurizing operation.
- the maximum pressure P max and the minimum pressure P min are alternately applied to the cells 5. be able to. That is, the maximum pressure P max time to the cell 5 t,, minimum pressure P min time t 2, also boosting time 1 3 and the step-down time 1 3 is set, the pressure cycling of biological as well as culture media 3 As a result, the growth environment power equivalent to the living body is realized.
- time, t. 2, t 3 can be arbitrarily adjusted, Rukoto to achieve optimal conditions in accordance with the characteristics and the body part of the cells 5 to be cultured Can be.
- the cells can be cultured efficiently without being contaminated in an environment that mimics the in-vivo environment, and cells or tissues that are close to and can easily fuse with body tissues can be cultured.
- c Cells or tissues to be cultured can be held in a culture medium in a floating or non-floating state, and efficient culture can be performed in an extremely stable state.
- the culture medium is used in accordance with the cells or tissues to be cultured, for example, one containing various amino acids, saccharides, salts, or proteins, or a substance containing two or more substances or all of them.
- efficient culture and high-quality cells or tissues can be cultured.
- the culture environment is set according to the physiological conditions of the body part, or age, height, weight, sex, and other unique information for each living body in addition to these physiological conditions.
- the tissue can be cultured.
- the living environment is set by the supply and control of gas such as nitrogen, oxygen or carbon dioxide, and the setting and control of temperature or humidity, it is possible to achieve environmental control close to that of the living body, and the strength of the body close to the body tissue Contribute to the culture of cells or tissues that easily fuse with the tissue Can be.
- gas such as nitrogen, oxygen or carbon dioxide
- temperature or humidity the setting and control of temperature or humidity
- the ideal physical stimulation can be achieved by selecting a continuous or intermittent or periodic change in the pattern of pressure, and selecting or combining it.
- the metabolic function of cells, the division cycle, and biological stimulation It influences the concentration gradient and dispersion of the culture, and can promote the culture.
- the culture unit accommodates cells or tissues to be cultured in a culture chamber and supplies necessary culture media to cells or tissues that are isolated from the outside air. Protects against contamination of the soil, so that high quality tissue can be cultured.
- the cells or tissues are subjected to the desired pressure by the pressurizing means in addition to the hydrostatic pressure and the physical stimulation by the flow by the culture medium, so that the metabolic function of the cells, the division cycle, the concentration gradient of the biological stimulation, Affected by dispersion, it can promote cell or tissue culture.
- the mode of supplying the culture media to the cells or tissues can be arbitrarily set by the culture media supply means and can be supplied intermittently or continuously, so that the culture is promoted by physical stimuli with variations. Can be.
- the pressurizing means or the culture medium supply means can be controlled arbitrarily.By using various control means such as a computer, various program controls such as feedback control and feed forward control are performed, Simultaneously, the desired environment can be set, and efficient culture can be performed.
- More efficient culture can be performed by setting the method of applying pressure, that is, the pressure pattern according to the cell or tissue to be cultured.
- the pressure pattern can be set in any form, and cell or tissue culture can be performed efficiently by selecting and combining the pressure pattern.
- the culture unit equipped with a culture chamber for storing cultured cells or tissues can be separated and detached independently of the culture device itself.Therefore, the cells or tissues must be moved together with the culture unit separated from the outside air. The cell or tissue can be protected from contamination by bacteria and the like during movement, and the reliability of the restoration of the living body can be improved. O By blocking the closed space, which is the culture space, from the outside air, it is possible to set the culture environment by supplying a desired gas and to protect cells or tissues from contamination by the outside air.
- Gas is supplied to cells or tissues by supplying gas such as nitrogen, oxygen or carbon dioxide to the culture unit housed in the closed space, and by providing the culture unit with gas absorbing means. Supply and control can mimic the biological environment.
- a living environment By filling the culture space formed by the closed space with a gas such as nitrogen, oxygen or carbon dioxide, a living environment can be imitated and a desired culture space can be formed.
- a gas such as nitrogen, oxygen or carbon dioxide
- a culture media tank for supplying or circulating the culture media required for the culture unit is provided.
- the culture media tank is installed in a closed space that is shielded from the outside air. Prevention can be achieved.
- a pressure-receiving membrane By installing a pressure-receiving membrane, it is possible to apply a pressure stimulus to cells or tissues contained in the culture chamber in a state where it is shielded from the outside air, and to apply a desired pressure stimulus such as a stimulus that imitates the biological environment. realizable.
- a desired pressure stimulus can be realized by using any of water pressure, hydraulic pressure, or air pressure as a pressure generating means, and a living environment can be accurately imitated.
- the culture media supply means is composed of a liquid sending device that pressurizes and sends the culture media taken in the liquid sending chamber, the culture media can be efficiently supplied or circulated to the culture unit, and the amount of pressurization is controlled. In this way, a desired amount of liquid can be set.
- w Buffer s the pressure applied to the culture media, so that an ideal pressurized stimulus can be applied to cells or tissues.
- the pressure of the culture medium can be controlled by controlling the pressure relief valve. Opening the pressure relief valve to lower the pressure of the culture media allows the culture media to be controlled to an ideal pressure state without contamination. Can be.
- the living body receives acoustic stimulus from the outside world, and by using a sound wave generator together, it can imitate the living environment acoustically, and the force of the cell or tissue to be cultured in the culture chamber is also reduced. Efficient and highly reliable injection can be performed by using ultrasonic waves in combination.
- control means By controlling the gas concentration supplied to the enclosed space by the control means, it is possible to imitate the biological environment and contribute to promoting the culture of cells or tissues.
- the present invention which describes the configuration, operation, and effects of the embodiments of the present invention, is not limited to the above-described embodiments and examples, but may be inferred by the objects and embodiments of the present invention. It includes all configurations that can be predicted or estimated by those skilled in the art, such as various configurations and modifications. Industrial applicability
- the cell or tissue culture method and apparatus of the present invention are useful as a tissue culture technique used for tissue engineering, which is an application of cell tissue engineering or gene therapy. It is suitable for use in in vitro culture of cells and tissues, and the cultured cells and tissues are suitable for use in repairing defective tissues in the human body.
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
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DE60139926T DE60139926D1 (de) | 2000-03-02 | 2001-02-28 | Methode oder apparat zur kultivierung von zellen oder gewebe |
AU2001236002A AU2001236002B2 (en) | 2000-03-02 | 2001-02-28 | Method and apparatus for culturing cell or tissue |
CA2401559A CA2401559C (en) | 2000-03-02 | 2001-02-28 | Method of and apparatus for cultivating a cell or tissue |
KR1020027011525A KR100674788B1 (ko) | 2000-03-02 | 2001-02-28 | 세포 또는 조직의 배양방법 및 그 장치 |
AT01908154T ATE443130T1 (de) | 2000-03-02 | 2001-02-28 | Methode oder apparat zur kultivierung von zellen oder gewebe |
EP01908154A EP1266960B1 (en) | 2000-03-02 | 2001-02-28 | Method and apparatus for culturing cell or tissue |
AU3600201A AU3600201A (en) | 2000-03-02 | 2001-02-28 | Method and apparatus for culturing cell or tissue |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2000057585A JP3865354B2 (ja) | 2000-03-02 | 2000-03-02 | 細胞又は組織の培養方法 |
JP2000-57585 | 2000-03-02 |
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Publication Number | Publication Date |
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WO2001064848A1 WO2001064848A1 (fr) | 2001-09-07 |
WO2001064848A9 true WO2001064848A9 (fr) | 2001-11-22 |
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Application Number | Title | Priority Date | Filing Date |
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PCT/JP2001/001516 WO2001064848A1 (fr) | 2000-03-02 | 2001-02-28 | Procede et dispositif de culture cellulaire ou tissulaire |
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US (3) | US6432713B2 (ja) |
EP (1) | EP1266960B1 (ja) |
JP (1) | JP3865354B2 (ja) |
KR (1) | KR100674788B1 (ja) |
CN (3) | CN1313601C (ja) |
AT (1) | ATE443130T1 (ja) |
AU (2) | AU2001236002B2 (ja) |
CA (1) | CA2401559C (ja) |
DE (1) | DE60139926D1 (ja) |
WO (1) | WO2001064848A1 (ja) |
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CN1737107A (zh) | 2006-02-22 |
JP2001238663A (ja) | 2001-09-04 |
CA2401559A1 (en) | 2002-08-28 |
CN100354406C (zh) | 2007-12-12 |
CN1313601C (zh) | 2007-05-02 |
CN1737106A (zh) | 2006-02-22 |
US6607917B2 (en) | 2003-08-19 |
DE60139926D1 (de) | 2009-10-29 |
CA2401559C (en) | 2011-07-26 |
KR20030032925A (ko) | 2003-04-26 |
ATE443130T1 (de) | 2009-10-15 |
KR100674788B1 (ko) | 2007-01-25 |
CN1737106B (zh) | 2011-11-09 |
US20020098586A1 (en) | 2002-07-25 |
WO2001064848A1 (fr) | 2001-09-07 |
US20010021529A1 (en) | 2001-09-13 |
AU2001236002B2 (en) | 2006-02-16 |
EP1266960A1 (en) | 2002-12-18 |
US6432713B2 (en) | 2002-08-13 |
US6599734B2 (en) | 2003-07-29 |
AU3600201A (en) | 2001-09-12 |
EP1266960B1 (en) | 2009-09-16 |
US20020037586A1 (en) | 2002-03-28 |
CN1427888A (zh) | 2003-07-02 |
EP1266960A4 (en) | 2004-07-14 |
JP3865354B2 (ja) | 2007-01-10 |
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