WO2006111641A2 - Dispositif et procede d'analyse multiparametrique d'elements microscopiques - Google Patents
Dispositif et procede d'analyse multiparametrique d'elements microscopiques Download PDFInfo
- Publication number
- WO2006111641A2 WO2006111641A2 PCT/FR2006/000819 FR2006000819W WO2006111641A2 WO 2006111641 A2 WO2006111641 A2 WO 2006111641A2 FR 2006000819 W FR2006000819 W FR 2006000819W WO 2006111641 A2 WO2006111641 A2 WO 2006111641A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- analysis
- radiation
- source
- microscopic elements
- fluorescence
- Prior art date
Links
- 238000004458 analytical method Methods 0.000 title claims description 107
- 238000000034 method Methods 0.000 title claims description 22
- 230000003287 optical effect Effects 0.000 claims abstract description 42
- 238000001914 filtration Methods 0.000 claims abstract description 21
- 238000009792 diffusion process Methods 0.000 claims abstract description 19
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 11
- 230000005855 radiation Effects 0.000 claims description 106
- 238000005259 measurement Methods 0.000 claims description 55
- 230000003993 interaction Effects 0.000 claims description 45
- 238000001514 detection method Methods 0.000 claims description 28
- 108010054147 Hemoglobins Proteins 0.000 claims description 19
- 102000001554 Hemoglobins Human genes 0.000 claims description 19
- 238000012546 transfer Methods 0.000 claims description 17
- 238000000684 flow cytometry Methods 0.000 claims description 15
- 210000003743 erythrocyte Anatomy 0.000 claims description 13
- 210000004027 cell Anatomy 0.000 claims description 12
- 210000004369 blood Anatomy 0.000 claims description 8
- 239000008280 blood Substances 0.000 claims description 8
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 238000012921 fluorescence analysis Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 4
- 238000001228 spectrum Methods 0.000 claims description 4
- 230000009466 transformation Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- 230000000877 morphologic effect Effects 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 230000001131 transforming effect Effects 0.000 abstract description 2
- BFMYDTVEBKDAKJ-UHFFFAOYSA-L disodium;(2',7'-dibromo-3',6'-dioxido-3-oxospiro[2-benzofuran-1,9'-xanthene]-4'-yl)mercury;hydrate Chemical compound O.[Na+].[Na+].O1C(=O)C2=CC=CC=C2C21C1=CC(Br)=C([O-])C([Hg])=C1OC1=C2C=C(Br)C([O-])=C1 BFMYDTVEBKDAKJ-UHFFFAOYSA-L 0.000 description 13
- 239000000523 sample Substances 0.000 description 10
- 230000005284 excitation Effects 0.000 description 8
- 230000003595 spectral effect Effects 0.000 description 8
- 150000001875 compounds Chemical class 0.000 description 6
- 238000002189 fluorescence spectrum Methods 0.000 description 6
- 230000014509 gene expression Effects 0.000 description 6
- 238000004163 cytometry Methods 0.000 description 5
- 239000000975 dye Substances 0.000 description 5
- 239000013307 optical fiber Substances 0.000 description 5
- 238000012512 characterization method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 102000039446 nucleic acids Human genes 0.000 description 4
- 108020004707 nucleic acids Proteins 0.000 description 4
- 150000007523 nucleic acids Chemical class 0.000 description 4
- 102100036469 Protein diaphanous homolog 2 Human genes 0.000 description 3
- 101710158950 Protein diaphanous homolog 2 Proteins 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000000862 absorption spectrum Methods 0.000 description 3
- 238000001917 fluorescence detection Methods 0.000 description 3
- 238000000338 in vitro Methods 0.000 description 3
- 238000005424 photoluminescence Methods 0.000 description 3
- 239000005098 photoluminescent agent Substances 0.000 description 3
- 238000006862 quantum yield reaction Methods 0.000 description 3
- 210000001995 reticulocyte Anatomy 0.000 description 3
- 101710181478 Envelope glycoprotein GP350 Proteins 0.000 description 2
- 102100035716 Glycophorin-A Human genes 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 102100036490 Protein diaphanous homolog 1 Human genes 0.000 description 2
- 101710158942 Protein diaphanous homolog 1 Proteins 0.000 description 2
- FZWLAAWBMGSTSO-UHFFFAOYSA-N Thiazole Chemical compound C1=CSC=N1 FZWLAAWBMGSTSO-UHFFFAOYSA-N 0.000 description 2
- 230000000890 antigenic effect Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 238000000149 argon plasma sintering Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008033 biological extinction Effects 0.000 description 2
- 210000000601 blood cell Anatomy 0.000 description 2
- 210000001772 blood platelet Anatomy 0.000 description 2
- 239000006285 cell suspension Substances 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 2
- 230000002380 cytological effect Effects 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
- 238000005534 hematocrit Methods 0.000 description 2
- 108010036302 hemoglobin AS Proteins 0.000 description 2
- 230000001900 immune effect Effects 0.000 description 2
- 238000013394 immunophenotyping Methods 0.000 description 2
- 238000002372 labelling Methods 0.000 description 2
- 239000011325 microbead Substances 0.000 description 2
- 239000003068 molecular probe Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000002123 temporal effect Effects 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- PLXMOAALOJOTIY-FPTXNFDTSA-N Aesculin Natural products OC[C@@H]1[C@@H](O)[C@H](O)[C@@H](O)[C@H](O)[C@H]1Oc2cc3C=CC(=O)Oc3cc2O PLXMOAALOJOTIY-FPTXNFDTSA-N 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 241000206602 Eukaryota Species 0.000 description 1
- 108010044495 Fetal Hemoglobin Proteins 0.000 description 1
- 108091005250 Glycophorins Proteins 0.000 description 1
- 102000018997 Growth Hormone Human genes 0.000 description 1
- 108010051696 Growth Hormone Proteins 0.000 description 1
- 101001074244 Homo sapiens Glycophorin-A Proteins 0.000 description 1
- 101000835093 Homo sapiens Transferrin receptor protein 1 Proteins 0.000 description 1
- 206010022971 Iron Deficiencies Diseases 0.000 description 1
- 239000000232 Lipid Bilayer Substances 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 108091005461 Nucleic proteins Proteins 0.000 description 1
- 102000007238 Transferrin Receptors Human genes 0.000 description 1
- 108010033576 Transferrin Receptors Proteins 0.000 description 1
- 102100026144 Transferrin receptor protein 1 Human genes 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 208000007502 anemia Diseases 0.000 description 1
- 239000000427 antigen Substances 0.000 description 1
- 102000036639 antigens Human genes 0.000 description 1
- 108091007433 antigens Proteins 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- KSCQDDRPFHTIRL-UHFFFAOYSA-N auramine O Chemical compound [H+].[Cl-].C1=CC(N(C)C)=CC=C1C(=N)C1=CC=C(N(C)C)C=C1 KSCQDDRPFHTIRL-UHFFFAOYSA-N 0.000 description 1
- 239000012472 biological sample Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004820 blood count Methods 0.000 description 1
- 210000001185 bone marrow Anatomy 0.000 description 1
- 238000002659 cell therapy Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000000295 emission spectrum Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 230000000925 erythroid effect Effects 0.000 description 1
- 230000010437 erythropoiesis Effects 0.000 description 1
- 239000007850 fluorescent dye Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000005283 ground state Effects 0.000 description 1
- 239000000122 growth hormone Substances 0.000 description 1
- 230000002489 hematologic effect Effects 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009830 intercalation Methods 0.000 description 1
- 230000003834 intracellular effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 201000004792 malaria Diseases 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002159 nanocrystal Substances 0.000 description 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000012788 optical film Substances 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 244000045947 parasite Species 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000035755 proliferation Effects 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- INCIMLINXXICKS-UHFFFAOYSA-M pyronin Y Chemical compound [Cl-].C1=CC(=[N+](C)C)C=C2OC3=CC(N(C)C)=CC=C3C=C21 INCIMLINXXICKS-UHFFFAOYSA-M 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- ACOJCCLIDPZYJC-UHFFFAOYSA-M thiazole orange Chemical compound CC1=CC=C(S([O-])(=O)=O)C=C1.C1=CC=C2C(C=C3N(C4=CC=CC=C4S3)C)=CC=[N+](C)C2=C1 ACOJCCLIDPZYJC-UHFFFAOYSA-M 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/6428—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes"
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/10—Investigating individual particles
- G01N15/14—Electro-optical investigation, e.g. flow cytometers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/10—Investigating individual particles
- G01N15/14—Electro-optical investigation, e.g. flow cytometers
- G01N15/1468—Electro-optical investigation, e.g. flow cytometers with spatial resolution of the texture or inner structure of the particle
- G01N15/147—Electro-optical investigation, e.g. flow cytometers with spatial resolution of the texture or inner structure of the particle the analysis being performed on a sample stream
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/10—Investigating individual particles
- G01N15/14—Electro-optical investigation, e.g. flow cytometers
- G01N15/1434—Electro-optical investigation, e.g. flow cytometers using an analyser being characterised by its optical arrangement
-
- G01N15/149—
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/10—Investigating individual particles
- G01N15/14—Electro-optical investigation, e.g. flow cytometers
- G01N2015/1477—Multiparameters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/10—Investigating individual particles
- G01N15/14—Electro-optical investigation, e.g. flow cytometers
- G01N2015/1486—Counting the particles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/10—Investigating individual particles
- G01N15/14—Electro-optical investigation, e.g. flow cytometers
- G01N2015/1493—Particle size
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N2021/6417—Spectrofluorimetric devices
- G01N2021/6419—Excitation at two or more wavelengths
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N2021/6417—Spectrofluorimetric devices
- G01N2021/6421—Measuring at two or more wavelengths
Definitions
- the invention relates to the field of the analysis of microscopic elements, and more particularly the devices dedicated to the characterization and counting of microscopic elements by means of a light.
- microscopic elements is understood to mean any element of microscopic dimensions, and in particular particles or biological cells (prokaryotes and eukaryotes).
- diffusion which include transmission, diffraction, reflection and refraction, and those called photoluminescence that combine fluorescence and phosphorescence. They allow separately or in combination to obtain particular information on shape, volume, size, color, density, structure, biochemical nature, or granularity.
- Characterizations of biological elements mainly blood cells, obtained with current flow cytometry techniques, are nevertheless based on a limited number of variables and possibilities of cell discrimination.
- This detection mode is for example described in US Pat. No. 4,735,504 by TECHNICON Instruments Corp.
- the optical system described in this patent uses diffracted light measurements in two different angle ranges, which makes it possible to separate the volume and refractive index values of the elements by comparing their optical responses with those of calibrated elements in volume and refractive index.
- the processing of these data is based on the theory of light scattering by a spherical particle developed by Gustav MIE, and described in particular at the Internet address "http://en.wikipedia.org/wiki/Mie scattering".
- fluorescence is a phenomenon induced during the return to the ground state of a molecule excitable and excited by a light energy at a wavelength of its own.
- the emission of fluorescence light is always at a frequency lower than that of excitation.
- the fluorescence emission is substantially isotropic.
- the measurement is generally carried out outside the axis of excitation of the incident light and through an optical filter transmitting only the spectral band of interest to the detector.
- Molecular probes used in fluorescence may be vital or supravital dyes having intrinsic affinity for a particular type of molecule.
- intercalating dyes of nucleic acids such as orange thiazole, auramine O, pyronine Y or the like can be thought of, or to immunological probes composed of an antibody on which is hung a dye marker, usually a fluorochrome alone or in tandem or sometimes a nano crystal.
- a correction method called “compensation” generally consists of reducing the fluorescence signal of the microscopic element analyzed by the proportional part of spectral overlap ( s) microscopic element (s), as indicated in the document "Spectral Compensation for Flow Cytometry: Visualization Artifacts, Limitations and Caveats, "Mario Roederer 2001, Cytometry 45, pp. 194-205.
- excitation wavelengths make it possible to open a wider choice of dyes and makes it easier to separate the emission spectra.
- the different excitation wavelengths are frequently spatially separated in the measuring vessel, which in this case offers the advantage of several independent measurements as described in the article by J. Steinkamp. Improved multilaser / multiparameter for cytometer for analysis and sorting John A. Steinkamp, Robert C. Habbersett, and Richard D. Hiebert; Review of Scientific Instruments Vol 62 (11) pp. 2751-2764, November 1991.
- the problem of this method lies in the fact that the spatial shift induces a temporal phase shift of the responses and that the registration of the information must be done downstream, either by delaying the information analogically or by recalibrating measurements using software.
- excitation wavelengths in particular laser sources
- fluorescence measurements and other optical parameters brings a technological complexity and an important implementation difficulty, as for example described in FIG. article entitled “Nine Color Eleven Parameter Immunophenotyping Using Three Laser Flow Cytometry", Martin Bigos 1999, Cytometry 36, pp. 36-45.
- the level of risk of error in the interpretation of results increases with the number of parameters and the use of these devices is reserved for highly specialized technicians at the risk of obtaining unsuitable and false results, and therefore potentially dangerous.
- a limitation of compensation whose level of criticality increases with the number of fluorochromes, concerns the propagation and the amplification of the noise of the fluorescence measurements and their linear combinations which serve to correct the raw measurements.
- the object of the invention is therefore to improve the situation.
- the invention is intended to overcome the compensation problems generally encountered in the prior art.
- the invention proposes a device for analyzing microscopic elements, comprising:
- a first part a measurement space for microscopic elements to be analyzed
- a second part at least one source delivering radiation having at least two different analysis wavelengths and intended to interact with the microscopic elements in the measurement space to form interaction radiation
- interaction radiation the radiation resulting from the interaction between the analysis beam and the microscopic elements analyzed.
- interaction radiations can be in particular diffusion radiations (refraction, reflection, diffraction) and / or photoluminescence (fluorescence, phosphorescence).
- radiation here means a light of wavelength between the ultraviolet and the infrared, that is to say between about 100 nm (0.1 ⁇ m) and about 5000 nm ( 5 ⁇ m).
- its coded radiations are conjugated at the level of the measurement space, it comprises i) coding means responsible for coding the radiation upstream of the measurement space with different codes, and ii) optical filtering means for selectively filtering the fluorescence interaction radiation and / or of diffusion according to their wavelength, upstream of the detection means, and - that its analysis means comprise decoding means responsible for decoding the electrical signals so that they are analyzed according to their coding code. 'origin.
- coding the action of applying a code ( ⁇ i) to an analysis radiation (Ri) before its interaction with the microscopic elements, in order to generate the interaction radiation which itself comprises the original code.
- the codes ( ⁇ i) may be chosen so as to apply a pulse modulation to each analysis radiation.
- pulses can be synchronous or asynchronous.
- all the wavelengths interact simultaneously with the microscopic elements analyzed.
- the wavelengths interact sequentially with the microscopic elements to be analyzed.
- the optical filtering means are arranged, for a given family of fluorochromes and for a given type of coding, so as to avoid that compensations are made.
- the device according to the invention may comprise additional characteristics that can be taken separately or in combination, and in particular:
- optical filtering means can be charged with selectively filtering the fluorescence-type interaction radiation whose wavelengths belong to fluorescence analysis bands interposed between two analysis wavelengths and placed respectively. ) beyond the largest analysis wavelength;
- Its coding means may be responsible for periodically and / or sinusoidally encoding the analysis radiations
- At least part of its coding means can act at the source upstream of a radiation distribution output. This part can be integrated into the source; At least part of its coding means can act on the radiation downstream of the source in order to constitute the analysis radiations; Its coding means can modulate in intensity the radiation delivered by the source, for example by means of an acousto-optic modulator, in order to constitute the analysis radiations;
- the source may comprise at least two coupled lasers, possibly of the monochrome type, and / or at least one light-emitting diode, whose analysis radiations are conjugated at the level of the measurement space.
- the source may comprise a substantially continuous polychromatic light source, such as a polychromatic laser, an incandescent lamp, or an arc lamp;
- the source can deliver the analysis radiation in a continuous mode and / or a pulse mode
- the intensity of each analysis radiation delivered by the source can be parameterizable
- Its detection means may comprise a multiplicity of photosensitive sensors dedicated to the detection of interaction radiation (representative of diffusion (s) and of fluorescence (s)) induced by the analysis radiations on the microscopic elements to be analyzed.
- the detection means may comprise a multiplicity of photosensitive sensors dedicated to the detection of interaction radiations representative of difrusion (s) and implanted in a location defined by an axis intercepting the general direction of propagation of the analysis radiations.
- Its analysis means can make it possible to deduce the refractive index of a type of microscopic elements analyzed from the signals resulting from the transformation of the interaction radiations representative of a diffusion.
- the means of analysis may make it possible, in particular, to determine the intra-erythrocyte hemoglobin content or the mtracytoplasmic protein content of the leucocytes;
- Its analysis means can make it possible to deduce signals resulting from the interaction between the analysis radiations and two photoluminescent agents (or fluorochromes) at different wavelengths, a degree of coupling representative of the transfer of energy between both photoluminescent agents.
- the invention also proposes a method for analyzing microscopic elements, comprising: A first step in which microscopic elements placed at a measurement space are illuminated by means of conjugated analysis radiations at the measurement space and having at least two different analysis wavelengths and encodings according to different codes chosen, so as to form interaction radiation, • a second step in which at least a portion of the interaction radiation is collected, then separated and filtered according to their wavelength ,
- the method according to the invention may comprise additional characteristics that can be taken separately or in combination, and in particular: in the first step, the analysis radiations can be applied sequentially or simultaneously to the microscopic elements to be analyzed;
- the first step it is also possible to perform a sinusoidal modulation of the intensity of the analysis radiations
- the fluorescence-type interaction radiation whose wavelengths belong to fluorescence analysis bands interposed between two analysis wavelengths and placed on the other side can be filtered selectively. beyond the largest analysis wavelength;
- the fourth step it is possible to deduce the refractive index of a type of microscopic elements analyzed, the signals resulting from the transformation of the interaction radiations representative of a diffusion.
- the microscopic elements belong to a blood sample, it is possible to determine, in particular, the intra-erythrocyte hemoglobin content or the intracytoplasmic protein content of the leucocytes;
- the fourth step it is possible to deduce from the signals resulting from the interaction between the analysis radiations and two photoluminescent agents (fluorochromes) at different wavelengths, a degree of coupling representative of the energy transfer between the two agents photoluminescent.
- the invention is particularly well suited, although in a non-limiting manner, to the field of in vitro diagnostics (especially flow cytometry), and to the analysis of any microscopic element in a fluid. It applies in particular to biological, biochemical, chemical, particulate, morphological analysis, and in particular multiparametric flow cytometry, the analysis of charged particles in a liquid or gaseous fluid, and particle size.
- FIG. 1A schematically and functionally illustrates a first exemplary embodiment of an optical analysis device according to the invention
- FIG. 1B schematically and functionally illustrates a second embodiment of an analysis device.
- optical device according to the invention in which several sources are capable of generating radiation intended to be conjugated at the level of the measurement space (CM),
- FIG. 2A illustrates an example of sinusoidal coding, with simultaneous lighting, which can be applied to light radiation
- FIG. 2B illustrates an example of sequential binary coding
- FIG. 2C shows the appearance of the signals of the binary coding of FIG. 2B, repeated periodically
- FIG. 3 is a diagram illustrating three absorption spectra of fluorochromes (SA1 to SA3) corresponding to three analysis wavelengths ( ⁇ 1 to ⁇ 3), and three fluorescence spectra of these same fluorochromes (SF1 to SF3). ,
- FIG. 4 schematically illustrates an exemplary embodiment of the part of the analysis device situated upstream of the measuring vessel, in which the modulator is of the acousto-optical type
- FIG. 5 schematically illustrates an exemplary embodiment of the part of the analysis device situated downstream of the measurement vessel and dedicated to the detection and analysis of the fluorescence
- FIG. 6 is a diagram of isovolume and isoconcentration curves making it possible to determine the volume and the concentration of corpuscular hemoglobin as a function of scattering cross sections C ext at the analysis wavelengths of 488 nm and 976 nm.
- FIGS. 1A and 1B describe two exemplary embodiments of optical analysis device DA, according to the invention.
- the device DA is dedicated to the characterization and counting in flow cytometry of the microscopic elements in a blood sample.
- the invention is limited neither to this type of sample nor to flow cytometry. It concerns in fact any type of sample comprising microscopic elements to be analyzed optically by fluorescence and / or by light scattering, and in particular particles in a fluid or biological samples.
- an analysis device DA comprises at least:
- CM a measurement space CM, sometimes called a measurement vessel (or measuring zone, or measuring window) at which the microscopic elements of the sample to be analyzed are located (or pass),
- Optical filtering means FO for selectively filtering the interaction radiation coming from the measurement space CM, after possibly interacting with the microscopic elements, and whose wavelengths preferably belong to bands of fluorescence analysis Bi which are each interspersed between two wavelengths of analysis ⁇ i and ⁇ i + 1, with the exception of the last one (which has the longest wavelengths) which is placed beyond the length sn analysis wave which is the largest,
- Detection means DF and / or DE comprising photosensitive sensors (or photosensors) responsible for converting into electrical signals at least part of the fluorescence interaction and / or scattering radiation coming from the measurement space after having possibly interacted with the microscopic elements
- MA analysis means comprising at least DRF and / or DRE decoding means responsible for decoding the electrical signals transmitted to it by the detection means DF and / or DE, so that they are analyzed according to their code ⁇ i so as to allow the determination of the representative data of the microscopic elements analyzed.
- optical optical filtering means FO associated with the detection means dedicated to the fluorescence DF with the associated means of decoding DRF, but no detection means dedicated to the diffusion DE and the associated decoding means DRE; optical filter FO, associated with the detection means dedicated to the fluorescence DF with the associated means of decoding DRF, and optical filtering means FO, associated with the detection means dedicated to the diffusion DE and the associated decoding means DRE,
- the analysis device DA When the analysis device DA is dedicated to flow cytometry or counting, its measurement vessel CM (or measuring space) may be of the type called "flux-capped", such as that described in the patent document. FR 2653885.
- the source S is responsible for generating a single light beam consisting of the superposition of n rays Ri of respective wavelengths ⁇ 1 to ⁇ n, with n> 2.
- each of the three sources S is responsible for generating a single light beam consisting of a radiation R 1 (R 1, R 2 or R 3) of wavelength ⁇ i ( ⁇ 1 ⁇ 2 or ⁇ 3).
- the intensity of each radiation, noted Ij can be adjusted to a predetermined value. This allows, for example, to place at a predetermined level the fluorescence intensity of a family of fluorochromes (or fluorescent compounds) excited by the analysis radiation Ri of wavelength ⁇ i and intensity Ij.
- fluorochromes for which the quantum yield of fluorescence is very high (this is for example the case of certain molecular probes such as orange thiazole).
- fluorochromes of identical quantum yields are simultaneously used to label antigens expressed differently on the same cell, the fluorescence levels emitted by the various fluorochromes can be approximately equalized by varying the intensities of their respective analysis radiations.
- the source S is also called optical "synthesizer-equalizer”.
- Each of the n radiations Ri of intensity I can also be encoded periodically and / or sinusoidally intensity by the coding means to which we will return later.
- This coding which is for example of the type illustrated in FIGS. 2A to 2C, is decisive because it allows, thanks to the DRF and / or DRE decoding means, the demultiplexing of the radiation resulting from the interaction with the microscopic elements analyzed. (in particular fluorescence and / or diffusion mechanisms).
- the coding can be performed by acting on the injection current, the modulator M then being an electrical generator capable of delivering currents. electrical images of the codes applied to each of the radiations.
- the coding is of sinusoidal type, the coding consists in particular of setting modulation frequencies ⁇ i which are a function of various experimental considerations which will be specified below.
- n rays Ri of wavelengths ⁇ i selected and intensity I j possibly chosen and conjugated in the measurement space there are n rays Ri of wavelengths ⁇ i selected and intensity I j possibly chosen and conjugated in the measurement space.
- the expression of the luminous intensity Ij (in W / m 2 ) is given by the relation Al of the appendix.
- the beam or beams of n rays is (are) focused (s) by unrepresented optical means, inside the measurement (or counting) space where they interact with the microscopic element (here a cell biological) previously marked and / or colored according to any technique known to those skilled in the art.
- FIG. 3 shows three absorption spectra SA1 to SA3 of three fictitious fluorochromes corresponding to three analysis wavelengths ⁇ 1 to ⁇ 3, and the three SF1 to SF3 fluorescence spectra of the same three fluorochromes that are detected. by the DF fluorescence detection means.
- the references B1 to B3 denote the three wavelength bands that the optical filtering means FO pass through.
- fluorochromes of different types is here limited to three in order to facilitate the description. But, the invention is not limited to this number. It concerns indeed any number of fluorochromes.
- the band B1 which corresponds to the maximum of the fluorescence spectrum SF1 of the first fluorochrome, is interposed between the analysis wavelengths ⁇ 1 and ⁇ 2, the band B2, which corresponds to the maximum of the fluorescence spectrum SF2 of the second fluorochrome, is interposed between the analysis wavelengths ⁇ 2 and ⁇ 3, and the band B3, which corresponds to the maximum of the fluorescence spectrum SF3 of the third fluorochrome, is placed beyond the analysis wavelength ⁇ 3 (which is the larger of the three).
- each band Bi corresponds to a fluorescence detector DFi.
- [C], [D] and [E] are here the transfer matrices for calculating the fluorescence lights.
- This characteristic may for example be the peak amplitude or the effective value of the signal over a time interval limited by the duration of the analysis light pulse or a temporal characteristic of the signal such as the decay time of a signal. fluorescence light.
- the direct determination of the molar concentrations Qi of the fluorochromes, without going through a linear combination of the measurements, increases the precision of the results and thus the precision of the diagnosis.
- the invention can also make it possible to determine the degree of coupling between two fluorochromes (or fluorescent compounds) which corresponds to the energy transfer (by fluorescence) between a "donor" fluorochrome and an "acceptor” fluorochrome. This determination of the coupling between two fluorochromes can make it possible for example to measure the distance between epitopes or their physical association.
- the molar concentration Q1 in the presence of a transfer of energy between the two first fluorochromes can then be reformulated as indicated by the relation Al 8 of the appendix.
- the molar concentrations Q2 and Q3 in the presence of a transfer of energy between the two first fluorochromes are then given by the relations A6 and A7 of the appendix.
- FIG. 4 shows an upstream part of an analysis device DA according to the invention, in which the source S supplies light (radiations) with a wide spectrum, a modulator M ensuring both the selection of the lengths of analysis wave and the intensity coding of the corresponding radiations.
- Wide-spectrum light (or white light, or polychrome light) is here obtained using a pulsed laser L injected into a micro structured FO optical fiber.
- This type of source S is for example described by the Applicant, in the article entitled "White-light supercontinuum generation in normally dispersive optical film using original multi-wavelength pumping system", Optics Express, vol. 12, No. 19, September 2004.
- the laser L serving as a pump for the micro-structured optical fiber OF may for example be replaced by a Neodymium or Ytterbium-doped optical fiber laser operating in a blocked mode mode (for example with a pulse repetition rate of 50 MHz), followed by an optical amplifier capable of delivering a flux compatible with an excitation in a nonlinear interaction regime of the micro structured optical fiber OF.
- the polychromatic light that is delivered by this type of source S differs from that delivered by an incandescent lamp because its spatial coherence is extremely high (all the photons of the continuum are emitted in the same spatial mode).
- the source may comprise at least two coupled lasers, possibly of the monochrome type, and / or at least one light emitting diode. It may also include other types of substantially continuous polychromatic light source, such as an incandescent lamp or an arc lamp.
- the light beam coming from the micro-structured optical fiber OF is shaped using a focusing optic Ol, corrected chromaticism or zero chromaticity thanks, for example, to an optical combination of the catadioptric type (mirrors). .
- This light beam is focused at the level of the modulator M, which is here produced in the form of an acousto-optical cell, whose angular chromatism is preferentially corrected by spatial superposition of diffraction gratings adapted to diffraction at the incidence of Bragg.
- Such an acousto-optical modulator M is for example that marketed by the company A-A Opto-Electronic.
- the acousto-optic modulator M is here controlled by means of a control electronics SF capable of simultaneously generating (at least) 3 acoustic frequencies (f1, f2, f3), and itself controlled by the control module MC (which can be part of a system computer having a control software interface).
- the acoustic frequency band is for example between 80 MHz and 150 MHz.
- the frequencies are chosen so as to allow selection, within the light continuum of the beam, of three (in the example described) quasi-monochromatic radiations, for example of wavelengths equal to 488 nm (blue), 570 nm (yellow) and 976 nm (infrared).
- the equalization of the three radiations is obtained by varying the intensity of the acoustic signal.
- the higher the acoustic intensity the higher the diffraction efficiency in the acousto-optic modulator M.
- quasi-monochromatic radiation is meant here a light emitted in a spectral band between 1 and 50 nm wide.
- all the parameters of the source S and the modulator M can be parameterized remotely using the control module MC (for example of the computer type).
- the control module MC for example of the computer type.
- all the parameters of the source S such as the different analysis wavelengths and the respective intensities of the analysis and other radiations, can be chosen by means of a software interface. 'operator.
- the analysis radiations Ri, delivered at the output of the modulator M, are for example shaped by an optic O2 in order to be focused at the level of the measurement vessel (or space) CM.
- the modulation frequencies ⁇ i are chosen according to various parameters, such as, for example, the rate of passage of the biological cell at the level of the measurement space CM, the dilution, the size of the optical window of the measurement space CM , the bandwidth of the acquisition part (optical filtering means FO, detectors DE and / or DF) of the analysis device DA.
- the biological cell to be analyzed passes through a beam of analysis radiation having a Gaussian profile at a speed of about 1 m / s, with a width at mid-height of about 30 ⁇ m, it will generate a radiation pulse. interaction (fluorescence or diffusion (extinction)) substantially Gaussian form and duration substantially equal to 30 microseconds.
- the frequency spectrum is then Gaussian and its mid-height is substantially 0.3 / 30 ⁇ s, or about 10 kHz.
- modulator M may be at least partially integrated in the source S or be at least partly downstream thereof.
- the modulator M may also be placed at least partly upstream of the source M, for example so as to control its supply current.
- the part of the analysis device DA situated upstream of the measurement vessel CM and described above with reference to FIG. 4, can be coupled to a downstream part of the type of that illustrated in FIG. 1A or 1B. In this case, a part of the interaction radiation resulting from the scattering reaches the detector DE where it is converted into electrical signals processed by the analysis module MA.
- the detector DE is, by way of example, oriented in an average direction at approximately 45 ° to the general direction of propagation of the analysis radiations at the measurement space CM.
- the angle of this average direction can take any value between 0 ° and 360 ° depending on the type of information desired.
- the detector DE transmits these photoelectric signals to the decoder (or demodulator) DRE of the analysis module MA, so that it decodes them.
- This demodulator DRE is for example arranged in the form of filtering stages (decoding), for example of analog type.
- the photoelectric signals could be digitized and the filtering (decoding) operation could be performed digitally, in real time or delayed (after recording).
- the values of the diffusion signals SE (488 nm) and SE (976 nm) make it possible to determine the scattering cross sections C ext (488 nm) and C ext (976 nm) which are necessary for the determination of the refractive indices and the volumes of the red blood cells.
- the conversion of the scattering signals into cross sections is, for example, carried out by a calibration method using microbeads calibrated in terms of refractive index and volume. These microbeads may for example be made of latex or come from emulsions.
- the portion of the interaction radiation resulting from the fluorescence passes through a shaping optics before reaching the level of the optical filtering means FO.
- the DF fluorescence detection means are all grouped together in one and the same place.
- the optical filtering means FO constitute a multi-band filter.
- separation means LS may be used to spectrally separate the fluorescence interaction radiation into at least two parts.
- a separating plate LS possibly of the dichroic type.
- At least two fluorescence detection and analysis channels are thus defined, making it possible to obtain on one channel the fluorescence signals of a first type of fluorescent fluorochrome in the first optical filter band B1 of the optical filter FOI. and on a second channel the fluorescence signals of a second type of fluorescent fluorochromes in the second optical filter band B2 of the FO2 optical filter.
- the device of FIG. 5 can for example be used for the quantification of nucleic acids (RNA + DNA) and the detection of a membrane antigen.
- Two analysis radiations R1 ( ⁇ 1) and R2 ( ⁇ 2) having wavelengths ⁇ 1 and ⁇ 2 respectively equal to 488 nm and 560 nm are used here, in order to detect the fluorescences of the two fluorochromes (thiazole orange and PE) allowing to respectively mark the nucleic acids and the membrane antigen of the leucocytes.
- the two radiations Rl ( ⁇ l) and R2 ( ⁇ 2) are obtained using the device described above with reference to FIG.
- the first detection band B1 is centered on ⁇ 3 (530 nm) and has, for example, a spectral width of 30 nm
- the second detection band B2 is centered on XA (670 nm) and has, for example, a spectral width of 40 nm.
- ⁇ 3 is between ⁇ 1 and X2, and ⁇ 4 is larger than ⁇ 2.
- the interaction radiation filtered by the first optical filter FOI reaches a first fluorescence detector DF1 where they are converted by photodetectors into electrical signals transmitted to a first fluorescence decoder (or demodulator) DRF1 of the analysis module.
- MA responsible for demodulating them according to the first modulation frequency ⁇ l in order to deliver the signal PM 1 ( ⁇ 1).
- the interaction radiation filtered by the second optical filter FO2 reaches a second fluorescence detector DF2 where they are converted by photodetectors into electrical signals transmitted to a second fluorescence decoder (or demodulator) DRF2 of the analysis module.
- MA responsible for demodulating them according to the first and second modulation frequencies ⁇ l and ⁇ 2, in order to deliver the signal PM2 ( ⁇ l) and the signal PM2 ( ⁇ 2).
- the fluorescence demodulators DRF1 and DRF2 are, for example, arranged in the form of analog filtering stages, of the "butterworth bandpass" type, centered on the modulation frequencies.
- the amounts of fluorochromes (or molar concentrations) Q1 and Q2 are calculated by means of the relations A5 and A6, whose coefficients eu and an are defined by A2 and A3.
- the molar concentration Q2 can be extracted from the PM2 fluorescence signal, delivered by the second fluorescence detector DF2, by the second demodulator DRF2 by means of a bandpass type filter centered on the frequency ⁇ 2.
- PM2 comprises two frequency components, PM2 ( ⁇ 2), which corresponds to the rms value or the peak-to-peak value of the electric pulse filtered around the frequency ⁇ l , and PM2 ( ⁇ l), which corresponds to optical crosstalk.
- These frequency components PM2 ( ⁇ l) and PM2 ( ⁇ 2) which are defined by the relations Al 5 and Al 6 of the appendix, can be separated by means of a simple bandpass filter centered on the frequency ⁇ 2.
- the molar concentration Q1 can be extracted directly from the PM1 fluorescence signal which is equal to PM1 ( ⁇ 1).
- the signals delivered by the single PM fluorescence detector are given by the relation A19 which can be reformulated under the form of relationship A20 of the Annex.
- the PM ( ⁇ l) and PM ( ⁇ 2) signals which are given by the relations A21 and A22 of the appendix can be extracted from the PM signal.
- the relation A21 makes it possible to calculate Q2, and the transfer of Q2 in the relation A22 makes it possible to determine Ql.
- the analysis device DA makes it possible to measure the refractive index of the cells contained in a whole blood sample.
- this refractive index is recognized as being representative of the concentration of corpuscular hemoglobin.
- the red blood cell consists of a membrane "lipid bilayer" of about 7 nm thick and refractive index close to 1.46.
- the intracellular content contains several solid compounds dissolved in aqueous phase including hemoglobin ( ⁇ 34g / dl), salts ( ⁇ 0.7 g / dl) and a minority of organic compounds ( ⁇ 0.2 g / dl).
- the index of refraction can be written in the form given by the relation A23.
- M 66,500 g / mol.
- the average mass of hemoglobin dissolved in the red blood cell is 12 pg. Either an average concentration of 33 g / dl or 5 mmol / l.
- the hemoglobin measurement should be corrected for the hematocrit factor which is between about 40% and 55% in the man, and about 35% and 45% in the woman.
- This hematocrit factor is here taken as 0.42 (average value); for example, an average concentration of corpuscular hemoglobin of 5 mmol / l gives a total mean hemoglobin concentration of 2.1 mmol / l for a measurement carried out on whole blood.
- the concentration of corpuscular hemoglobin can be determined from the measurement of the extinction coefficient at two wavelengths. To do this, we can start from the geometric approach, developed by AG Borovoi, which makes it possible to calculate the diffusion cross section C ex t of a spherical red blood cell whose expression is given by the relation A24 of the appendix .
- a diagram of the isovolume and isoconcentration curves can be constructed to determine the volume and concentration of corpuscular hemoglobin as a function of the diffusion cross sections C ext at the lengths of. analysis wave (here 488 nm and 976 nm).
- C ext (488 nm) and C ext (976 nm) corresponds on this diagram a single sphere of hemoglobin concentration and volume given.
- Obtaining hemoglobin content and monitoring may be particularly useful. This is particularly the case for monitoring anemia and iron deficiency.
- the average corpuscular hemoglobin load is indeed particularly useful to follow during the strong marrow demands that are induced by the growth hormone treatments ("r-Hu EPO therapy").
- Tracking reticulocytes and their hemoglobin content in cell therapy may also be useful, as discussed in Carlo Brugnara's “Iron Defectiveness and Erythropoiesis: New Diagnostic Approaches," Clinical Chemistry 49: 10, 2003, pp. 1573-1578.
- the hemoglobin content may advantageously be supplemented by a fluorescence measurement of the intra erythrocyte RNA making it possible to isolate the young erythrocytes, or reticulocytes, from the mature elements.
- One or more fluorescence wavelengths may be simultaneously used for additional markings allowing other potentially useful specific identifications, such as identification or detection of: • red blood cells containing fetal hemoglobin (HbF), or
- glycophorin A (CD235a), as described in particular in the article by Hans J. Tanke "Reticulocytes and Mature Erythrocytes", Flow Cytometry in Hematology, ISBN 0-12-432940-3.
- the applications of the invention are numerous as well on the nucleated cells (leucocytes and others) as on the erythroid line or the thrombocyte elements (labeling activation or platelet immaturity).
- the invention is not only useful in the case of figured elements of blood or bone marrow but can also be adapted to any biological cell suspension, whether eukaryotic or prokaryotic.
- the invention has mainly been described in the form of an analysis device.
- the invention can also be considered in the form of an analysis method that can be implemented by the analysis device described, as well as by its variants.
- this method can be adapted to a device performing the scanning of a cellular mat (smears, tissue sections, in particular), or a cell suspension.
- Ij 0 1 to n
- Mj the depth (or amplitude) of modulation (generally between 0 to 1)
- ⁇ i the frequency of the modulation applied to the radiation Ri
- t the time.
- Ci 3 O (A2)
- C 23 O
- ⁇ y is the molar absorption coefficient of the compound i at the wavelength ⁇ j
- ⁇ y is the fluorescence yield of the compound i in the detection band Bj
- Fy is the weighting factor between 0 and 1 and reflecting the only part of the fluorescence spectrum of the compound i is filtered in the detection band Bj.
- Ky is a constant phenomenological coupling coefficient, between 0 and 1, and representing the energy transfer from a fluorochrome i to a fluorochrome j
- py is a coefficient representing the quantum yield with which the transferred light, resulting from fluorochrome i, is converted to fluorescence light by fluorochrome j.
- n (Hb, ⁇ ) no ( ⁇ ) + ⁇ ( ⁇ ) * Hb is the real part of the refractive index
- n 0 ( ⁇ ) the refractive index of the pure solvent, depending on the length of d wave
- ⁇ ( ⁇ ) the incremental coefficient of refractive index specific to hemoglobin and function of the wavelength
- ⁇ (Hb, ⁇ ) ⁇ ( ⁇ ) * Hb is the imaginary part of the refractive index
- ⁇ ( ⁇ ) is the molar absorption coefficient.
- n-ik complex refractive index of the red blood cell
- p ⁇ 2x (nl) parameter giving the phase difference
- x 2 ⁇ a / ⁇
- a radius of the sphere
- tan ⁇ ⁇ / (nl ).
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2006800208234A CN101194159B (zh) | 2005-04-21 | 2006-04-14 | 微观元素多参数分析设备和方法 |
EP06743693A EP1875197A2 (fr) | 2005-04-21 | 2006-04-14 | Dispositif et procede d'analyse multiparametrique d'elements microscopiques |
US11/912,055 US7777869B2 (en) | 2005-04-21 | 2006-04-14 | Device and method for multiparametric analysis of microscopic elements |
JP2008507118A JP2008537136A (ja) | 2005-04-21 | 2006-04-14 | 微視的要素のマルチパラメトリック分析のための装置及び方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0504005 | 2005-04-21 | ||
FR0504005A FR2884920B1 (fr) | 2005-04-21 | 2005-04-21 | Dispositif et procede d'analyse multiparametrique d'elements microscopiques |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2006111641A2 true WO2006111641A2 (fr) | 2006-10-26 |
WO2006111641A3 WO2006111641A3 (fr) | 2007-01-04 |
Family
ID=34955254
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2006/000819 WO2006111641A2 (fr) | 2005-04-21 | 2006-04-14 | Dispositif et procede d'analyse multiparametrique d'elements microscopiques |
Country Status (7)
Country | Link |
---|---|
US (1) | US7777869B2 (fr) |
EP (1) | EP1875197A2 (fr) |
JP (1) | JP2008537136A (fr) |
KR (1) | KR20080007473A (fr) |
CN (1) | CN101194159B (fr) |
FR (1) | FR2884920B1 (fr) |
WO (1) | WO2006111641A2 (fr) |
Families Citing this family (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102365096A (zh) * | 2009-03-25 | 2012-02-29 | 洛斯阿拉莫斯国家安全有限责任公司 | 传染剂的快速死前检测 |
EP2411800A1 (fr) | 2009-03-25 | 2012-02-01 | Los Alamos National Security, LLC | Ensemble à fibres optiques pour spectrométrie par fluorescence |
FR2956207B1 (fr) * | 2010-02-10 | 2012-05-04 | Horiba Abx Sas | Dispositif et procede de mesures multiparametriques de microparticules dans un fluide |
US9522396B2 (en) | 2010-12-29 | 2016-12-20 | S.D. Sight Diagnostics Ltd. | Apparatus and method for automatic detection of pathogens |
FR2971337B1 (fr) * | 2011-02-04 | 2013-03-01 | Horiba Abx Sas | Dispositif et procede de mesures multiparametriques de microparticules dans un fluide |
GB2492950A (en) * | 2011-07-11 | 2013-01-23 | Cambridge Consultants | Measuring a luminescent property of a sample using a dual-modulated excitation beam |
EP2769203B1 (fr) | 2011-10-21 | 2019-01-16 | Acea Biosciences, Inc. | Système et procédé permettant de détecter une lumière induite par plusieurs sources d'excitation dans un canal de circulation |
CN106840812B (zh) | 2011-12-29 | 2019-12-17 | 思迪赛特诊断有限公司 | 用于检测生物样品中病原体的方法和系统 |
WO2014188405A1 (fr) | 2013-05-23 | 2014-11-27 | Parasight Ltd. | Procédé et système d'imagerie de prélèvement cellulaire |
IL227276A0 (en) | 2013-07-01 | 2014-03-06 | Parasight Ltd | A method and system for obtaining a monolayer of cells, for use specifically for diagnosis |
US10831013B2 (en) | 2013-08-26 | 2020-11-10 | S.D. Sight Diagnostics Ltd. | Digital microscopy systems, methods and computer program products |
US10261080B2 (en) | 2013-11-19 | 2019-04-16 | Acea Biosciences, Inc. | Optical detection system for flow cytometer, flow cytometer system and methods of use |
WO2015077349A2 (fr) | 2013-11-19 | 2015-05-28 | Acea Biosciences, Inc. | Moteur optique pour cytomètre en flux, système de cytomètre en flux et procédés d'utilisation |
RU2016131016A (ru) * | 2014-02-28 | 2018-03-29 | Лайф Текнолоджиз Корпорейшн | Системы, способы и устройства для оптических систем в проточных цитометрах |
US9869628B2 (en) | 2014-06-25 | 2018-01-16 | Acea Biosciences, Inc. | Methods of collecting cells from multi-well plates for use in flow cytometry |
EP3186778B1 (fr) | 2014-08-27 | 2023-01-11 | S.D. Sight Diagnostics Ltd. | Système et procédé de calcul de variation de focalisation pour un microscope numérique |
JP6352750B2 (ja) * | 2014-09-26 | 2018-07-04 | シスメックス株式会社 | 血液分析装置および血液分析方法 |
JP6370659B2 (ja) * | 2014-09-26 | 2018-08-08 | シスメックス株式会社 | 血液分析装置および血液分析方法 |
EP3859425B1 (fr) | 2015-09-17 | 2024-04-17 | S.D. Sight Diagnostics Ltd. | Méthodes et appareil de détection d'entité dans un échantillon corporel |
CA3018536A1 (fr) | 2016-03-30 | 2017-10-05 | S.D. Sight Diagnostics Ltd | Distinction entre les composants d'un echantillon de sang |
WO2017195208A1 (fr) | 2016-05-11 | 2017-11-16 | S.D. Sight Diagnostics Ltd | Conduite de mesures optiques sur un échantillon |
US11307196B2 (en) | 2016-05-11 | 2022-04-19 | S.D. Sight Diagnostics Ltd. | Sample carrier for optical measurements |
EP3469515A1 (fr) * | 2016-06-13 | 2019-04-17 | Nanolive SA | Procédé de caractérisation et d'imagerie d'objets microscopiques |
CN109964133A (zh) * | 2016-10-31 | 2019-07-02 | 惠普发展公司,有限责任合伙企业 | 同位素的电参数 |
USD868991S1 (en) | 2017-03-28 | 2019-12-03 | Becton, Dickinson And Company | Register block |
USD869676S1 (en) | 2017-03-28 | 2019-12-10 | Becton, Dickinson And Company | Particle sorting module |
AU2018369859B2 (en) | 2017-11-14 | 2024-01-25 | S.D. Sight Diagnostics Ltd | Sample carrier for optical measurements |
EP3514600A1 (fr) * | 2018-01-19 | 2019-07-24 | Leica Instruments (Singapore) Pte. Ltd. | Procédé de normalisation d'intensité de fluorescence |
USD876668S1 (en) | 2018-01-30 | 2020-02-25 | Becton, Dickinson And Company | Particle sorting module mount |
USD872296S1 (en) | 2018-01-30 | 2020-01-07 | Becton, Dickinson And Company | Particle sorting module |
USD882817S1 (en) | 2018-01-30 | 2020-04-28 | Becton, Dickinson And Company | Sample container |
USD864415S1 (en) | 2018-01-30 | 2019-10-22 | Becton, Dickinson And Company | Particle sorting system |
DE102018114697B4 (de) * | 2018-06-19 | 2023-02-16 | Krohne Messtechnik Gmbh | Messvorrichtung und Verfahren zur zeitaufgelösten Messung eines Messsignals |
KR102122020B1 (ko) * | 2018-09-04 | 2020-06-12 | 경북대학교 산학협력단 | 혈구 분석 장치, 이를 이용한 혈구 분석 방법 |
US20210396642A1 (en) * | 2020-06-18 | 2021-12-23 | Wyatt Technology Corporation | Calculating molar mass values of components of and molar mass concentration values of conjugate molecules/particles |
KR102435974B1 (ko) * | 2020-09-28 | 2022-08-24 | (주)티에스테크 | 멀티 측정모듈을 이용한 미세먼지 측정 장치 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4735504A (en) * | 1983-10-31 | 1988-04-05 | Technicon Instruments Corporation | Method and apparatus for determining the volume & index of refraction of particles |
WO1992008120A1 (fr) * | 1990-10-29 | 1992-05-14 | Macquarie University | Cytometrie en flux a laser impulsionnel |
US5270548A (en) * | 1992-07-31 | 1993-12-14 | The United States Of America As Represented By The United States Department Of Energy | Phase-sensitive flow cytometer |
US20030205682A1 (en) * | 2002-05-03 | 2003-11-06 | Rakesh Kapoor | Evaluation of multicomponent mixtures using modulated light beams |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4573796A (en) * | 1984-01-06 | 1986-03-04 | The United States Of America As Represented By The United States Department Of Energy | Apparatus for eliminating background interference in fluorescence measurements |
US5303026A (en) * | 1991-02-26 | 1994-04-12 | The Regents Of The University Of California Los Alamos National Laboratory | Apparatus and method for spectroscopic analysis of scattering media |
JP3420765B2 (ja) * | 1992-09-14 | 2003-06-30 | エス・アール・アイ・インターナシヨナル | レーザー励起技術を用いる生物学的および他の分析のためのアップコンバート性レポータ |
JPH06186155A (ja) * | 1992-10-21 | 1994-07-08 | Toa Medical Electronics Co Ltd | 粒子分析装置 |
US5418371A (en) * | 1993-02-01 | 1995-05-23 | Aslund; Nils R. D. | Apparatus for quantitative imaging of multiple fluorophores using dual detectors |
US5986271A (en) * | 1997-07-03 | 1999-11-16 | Lazarev; Victor | Fluorescence imaging system |
US20070096039A1 (en) * | 2002-05-03 | 2007-05-03 | Rakesh Kapoor | Evaluation Of Multicomponent Mixtures Using Modulated Light Beams |
AU2004274855B2 (en) * | 2003-04-29 | 2010-05-27 | S3I, Llc | A multi-spectral optical method and system for detecting and classifying biological and non-biological particles |
-
2005
- 2005-04-21 FR FR0504005A patent/FR2884920B1/fr not_active Expired - Fee Related
-
2006
- 2006-04-14 EP EP06743693A patent/EP1875197A2/fr not_active Withdrawn
- 2006-04-14 US US11/912,055 patent/US7777869B2/en not_active Expired - Fee Related
- 2006-04-14 KR KR1020077027024A patent/KR20080007473A/ko not_active Application Discontinuation
- 2006-04-14 WO PCT/FR2006/000819 patent/WO2006111641A2/fr active Application Filing
- 2006-04-14 JP JP2008507118A patent/JP2008537136A/ja active Pending
- 2006-04-14 CN CN2006800208234A patent/CN101194159B/zh not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4735504A (en) * | 1983-10-31 | 1988-04-05 | Technicon Instruments Corporation | Method and apparatus for determining the volume & index of refraction of particles |
WO1992008120A1 (fr) * | 1990-10-29 | 1992-05-14 | Macquarie University | Cytometrie en flux a laser impulsionnel |
US5270548A (en) * | 1992-07-31 | 1993-12-14 | The United States Of America As Represented By The United States Department Of Energy | Phase-sensitive flow cytometer |
US20030205682A1 (en) * | 2002-05-03 | 2003-11-06 | Rakesh Kapoor | Evaluation of multicomponent mixtures using modulated light beams |
Non-Patent Citations (1)
Title |
---|
SHAPIRO H M ET AL: "COMBINED BLOOD CELL COUNTING AND CLASSIFICATION WITH FLUOROCHROME STAINS AND FLOW INSTRUMENTATION" JOURNAL OF HISTOCHEMISTRY AND CYTOCHEMISTRY, HISTOCHEMICAL SOCIETY, NEW YORK, NY, US, vol. 24, no. 1, janvier 1976 (1976-01), pages 396-411, XP002058391 ISSN: 0022-1554 cité dans la demande * |
Also Published As
Publication number | Publication date |
---|---|
EP1875197A2 (fr) | 2008-01-09 |
WO2006111641A3 (fr) | 2007-01-04 |
FR2884920A1 (fr) | 2006-10-27 |
KR20080007473A (ko) | 2008-01-21 |
JP2008537136A (ja) | 2008-09-11 |
CN101194159A (zh) | 2008-06-04 |
US7777869B2 (en) | 2010-08-17 |
US20080283754A1 (en) | 2008-11-20 |
CN101194159B (zh) | 2012-05-02 |
FR2884920B1 (fr) | 2007-08-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1875197A2 (fr) | Dispositif et procede d'analyse multiparametrique d'elements microscopiques | |
US5608519A (en) | Laser apparatus and method for microscopic and spectroscopic analysis and processing of biological cells | |
US5793485A (en) | Resonant-cavity apparatus for cytometry or particle analysis | |
US8921277B2 (en) | Multiplexed flow assay based on absorption-encoded micro beads | |
EP2291636B1 (fr) | Dispositif et procédé de mesure électro-optique destinés à la classification et au comptage d'éléments microscopiques | |
Becker et al. | Picosecond fluorescence lifetime microscopy by TCSPC imaging | |
FR2557977A1 (fr) | Appareil pour eliminer une interference de bruit de fond dans des mesures de fluorescence | |
EP1637871B1 (fr) | Dispositif de mesure comprenant une unité de réception lumineuse | |
EP2671063B1 (fr) | Dispositif et procede de mesures multiparametriques de microparticules dans un fluide | |
WO2007101932A2 (fr) | Dispositif et procédé de mesure de photoluminescence, d'absorption et de diffraction d'objets microscopiques dans un fluide | |
EP1963859B1 (fr) | Methode de discrimination d'au moins deux populations cellulaires et application | |
EP2067022B1 (fr) | Procede de mesure quantitative de cibles biomoleculaires deposees sur une biopuce, et dispositif pour sa mise en oeuvre. | |
WO2006024716A1 (fr) | Procede et dispositif de caracterisation des composants cellulaires d'un liquide biologique | |
EP2649431B1 (fr) | Systeme et procede d'imagerie multitechniques pour l'analyse chimique, biologique ou biochiimique d'un echantillon. | |
JP2011521247A5 (fr) | ||
WO2003060493A1 (fr) | Appareillage de spectroscopie d'autofluorescence subsurfacique | |
WO2015052331A1 (fr) | Dispositif et procede de mesure de fluorescence resolue en temps pour le criblage a haut debit d'echantillons | |
WO2005075963A1 (fr) | Evaluation de melanges a plusieurs composants a l'aide de faisceaux de lumiere modules | |
Birch et al. | Fluorescence | |
EP3076156A1 (fr) | Procédé de détermination du niveau d agglutination de particules dans un échantillon | |
FR2627286A1 (fr) | Procede et appareil pour l'examen d'un echantillon en immunologie | |
WO2009087287A1 (fr) | Procédé et dispositif de caractérisation d'éléments microscopiques | |
WO2014058371A1 (fr) | Spectroscopie par corrélation d'interférence de diffusion (sics) | |
Bergmann et al. | Biological Application of FLIM by TCSPC |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2006743693 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1729/MUMNP/2007 Country of ref document: IN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2008507118 Country of ref document: JP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020077027024 Country of ref document: KR |
|
NENP | Non-entry into the national phase |
Ref country code: RU |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: RU |
|
WWE | Wipo information: entry into national phase |
Ref document number: 200680020823.4 Country of ref document: CN |
|
WWP | Wipo information: published in national office |
Ref document number: 2006743693 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 11912055 Country of ref document: US |