WO2014083201A1 - Verfahren zur bestimmung einer verträglichkeit zwischen einem spender und einem empfänger mittels durchflusszytometrischer detektion alloreaktiver t-zellen - Google Patents
Verfahren zur bestimmung einer verträglichkeit zwischen einem spender und einem empfänger mittels durchflusszytometrischer detektion alloreaktiver t-zellen Download PDFInfo
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- WO2014083201A1 WO2014083201A1 PCT/EP2013/075253 EP2013075253W WO2014083201A1 WO 2014083201 A1 WO2014083201 A1 WO 2014083201A1 EP 2013075253 W EP2013075253 W EP 2013075253W WO 2014083201 A1 WO2014083201 A1 WO 2014083201A1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/5005—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells
- G01N33/5091—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells for testing the pathological state of an organism
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
- G01N33/569—Immunoassay; Biospecific binding assay; Materials therefor for microorganisms, e.g. protozoa, bacteria, viruses
- G01N33/56966—Animal cells
- G01N33/56972—White blood cells
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2333/00—Assays involving biological materials from specific organisms or of a specific nature
- G01N2333/435—Assays involving biological materials from specific organisms or of a specific nature from animals; from humans
- G01N2333/705—Assays involving receptors, cell surface antigens or cell surface determinants
- G01N2333/70503—Immunoglobulin superfamily, e.g. VCAMs, PECAM, LFA-3
- G01N2333/70514—CD4
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2333/00—Assays involving biological materials from specific organisms or of a specific nature
- G01N2333/435—Assays involving biological materials from specific organisms or of a specific nature from animals; from humans
- G01N2333/705—Assays involving receptors, cell surface antigens or cell surface determinants
- G01N2333/70503—Immunoglobulin superfamily, e.g. VCAMs, PECAM, LFA-3
- G01N2333/70517—CD8
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2800/00—Detection or diagnosis of diseases
- G01N2800/24—Immunology or allergic disorders
- G01N2800/245—Transplantation related diseases, e.g. graft versus host disease
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2800/00—Detection or diagnosis of diseases
- G01N2800/52—Predicting or monitoring the response to treatment, e.g. for selection of therapy based on assay results in personalised medicine; Prognosis
Definitions
- the invention relates to a method for determining a compatibility between a donor and a recipient by means of flow cytometric detection of alloreactive T cells.
- the cell-mediated immune response to donations of tissues or organs plays an important role in both acute and chronic transplant rejection. It is of great importance to assess the risk of rejection of the donation by the recipient.
- labeled sample a blood sample obtained from a donor / recipient pair to be analyzed
- labeled sample the label being suitable for distinguishing from a sample from the recipient
- non-labeled sample the other blood sample obtained from the donor / recipient pair to be analyzed
- step d) of claim 1 stimulation of antigen-presenting cells (APC) in the mixture of labeled and unlabelled sample according to step d) of claim 1 by adding anti-CD28 or anti-CD28 and anti-CD49d antibodies followed by
- the sample or both samples may be derived from whole blood.
- the label is a labeled CD45 antibody, CFDA-SE or CFSE.
- the first medium used in step b) of the method according to the invention can be independent of the second medium mentioned in step c) of claim 1.
- the first medium and the second medium may be any cell culture media, especially those selected from the group consisting of phosphate buffered saline, RPMI.
- the separation of cellular constituents of the samples from the liquid phase can take place by means of centrifugation.
- the secretion inhibitor is brefeldin A (BFA) or monesin.
- the added prior to the flow cytometric detection of cell membrane permeator is a saponin, Tween ®.
- the cytokine in the method of the invention is ⁇ -IFN.
- the activation marker can be CD69.
- step m) case a. show alloreactive CD4 T cells of the labeled partner of the donor / recipient pair against the unlabeled partner from the donor / recipient pair.
- step m) case b. Alloreactive CD4 T cells of the non-labeled partner of the donor / recipient pair show up against the labeled partner of the donor / recipient pair.
- step m) case c. show alloreactive CD8 T cells of the labeled partner of the donor / recipient pair against the unlabeled partner of the donor / recipient pair. If the result is given, step m) case b. Alloreactive CD8 T cells of the non-labeled partner of the donor / recipient pair show up against the labeled partner of the donor / recipient pair.
- the supernatant is removed and the Falcons are filled to their original weight with medium. Then 500 ⁇ of the recipient's blood (unstained blood sample) is pipetted over to the donor's blood ( ⁇ lml). For stimulation, a mixture of anti-CD28 and anti-CD49d is added by pipette and incubated for 2 h in the incubator. Subsequently, BFA is added to the sample and incubated for 4 h in the incubator (curved arrows added).
- the MFI of the stained cell population increases with increasing concentration and that of the unstained cell population remains at a zero level (A) or increases slightly (B and C).
- the anti-CD45-FITC from Sigma shows the highest MFI ratio.
- the anti-CD45 APC of BD shows a better ratio of MFIs, such as the CD45-FITC of BD (green).
- the red circles represent those concentrations which were decided in the further course of the experiment.
- Evaluation of the FACS Measurement Part 1. The evaluation strategy is applied to whole blood samples and PBMC samples with essentially the same algorithm. First, by representing two unoccupied channels (V-450 and V-500) against each other (dot blot at the top right), nonspecific events shown in the gate P5 are removed. In the dot blot below, CD8 is applied against CD4. Here, the cells lying in the gate P3 are cut out.
- the cell Those located in the gate PI are backgated, ie the left-side dot blot image (FSC vs. SSC) shows only cells that are visible in the gate PI (middle dot blot, right side) second backgating of the lymphocytes occurs through gate P2 (density blot, bottom left), which gated on a population between CD45 positive and CD45 negative cells (blue gate). Since these cells are localized in the Densityblot (top left, shown in blue) are not lymphocytes, Gaten was aimed at this not to include in the evaluation. For the density blot (top left), where the two backgating strategies were applied, the forward scatter (FSC) is displayed against the side-to-side (SSC).
- FSC forward scatter
- lymphocytes are further subdivided into CD45 positive (frame, top) and CD45 negative (frame, bottom) cells by means of a density blot representation (bottom right). Evaluation of the FACS Measurement Part 2.
- CD45 positive and CD45 negative lymphocytes from part 1 are further subdivided into CD4 positive (the two left squares) and CD8 positive (the two right squares) cells which are plotted against IFNy ( upper four density blots). In the underlying four dot blots, only the positive T cells of the overlying density blots, ie only the cells that are in the yellow frame, are displayed.
- the two left dot plots again represent CD4 positive T cells, the two right CD8 positive. These cells are further subdivided into four subpopulations based on their expression of the activation marker CD69 and the cytokine IFNy, with the T cells lying in the upper right quadrant (frame) lying as alloreactive T cells.
- CD45 + CD4 + CD4 T cells of the donor.
- the events in the upper right quadrant correspond to the donor's alloreactive CD4 T cells, which react against the recipient's cells.
- CD45-CD4 + CD4 T cells of the recipient.
- the events in the upper right quadrant correspond to the recipient's alloreactive CD4 T cells, which react against cells of the donor.
- CD45 + CD8 + CD8 T cells of the donor.
- the events in the upper right quadrant correspond to the allo-reactive CD8 T cells of the donor, which react against cells of the recipient.
- CD45-CD8 + CD8 T cells of the recipient.
- the events in the upper right quadrant correspond to the recipient's alloreactive CD8 T cells, which respond to cells of the donor.
- FIG. 6 Shown in each case are the y-IFN / CD69 dotplos of the unstained CD8 T
- Fig. 7 Represented are CD4 T-cells of the cytomegalovirus (CMV) seronegative
- Subject a and the CMV seropositive subject b The dot plots show the ⁇ -IFN expression of the CD45-proportionally stained (*) or unstained autologous stimulations and the Allo measurements from subjects a and b (from left to right) in Figure (A) after stimulation with a control antigen and in Figure (B) after stimulation with CMV-Ag.
- Fig. 8 Shown are 590 pairs combinations of 47 subjects, with a
- the subject is undyed as a "recipient” and the same subject, once in the same pair combination as before, is pre-stained as a "donor” for CD4 (A) and CD8 (B) T cells.
- Fig. 9 590 independent pairs of 47 subjects were screened for the presence of alloreactive CD4 T cells (A) and alloreactive CD8 T cells (B) in the whole blood assay.
- the calculated detection limit (NG, dashed line) is 0.0081% for alloreactive CD4 T cells and 0.0145% for alloreactive CD8 T cells.
- C) Ratio of the different pair combinations of the Allo measurements above and below the detection limit (Fisher's exact Test, p 0.4149). The data are presented as median ⁇ IR.
- heparinized whole blood was needed by two subjects each ("recipient and donor"). Similar to using isolated PBMC, the donor blood sample was pre-stained with CD45 antibody to later, after collection of donor and recipient blood - be able to differentiate the cells of the two individuals in the flow cytometer.
- Pretreatment of recipient and donor cells was done in a 15 ml Falcon. Similar to the use of PBMC, the recipient sample remained unstained and was added to the anti-CD45 pre-stained donor sample ( Figure 1). Since pipetting was lost in the pre-treatment wash procedures, 700 ⁇ whole blood was used in the recipient samples, of which 500 ⁇ was added to 500 ⁇ whole blood of the donor. Whole blood falcons were initially weighed and the starting weights noted (6.9 g for the recipient samples and 6.7 g for the donor samples). To stain the donor samples, 5 ⁇ of the CD45 antibody was pipetted directly into each tube, mixed and incubated for 30 min in the dark.
- both the recipient and the donor samples were washed with 14 ml PBS (centrifugation: 353 g, 10 min).
- the supernatant was removed and the sample washed with 14 ml of medium (RPMI + 0.5% HSA + 1% P / S) (centrifugation: 353 g, 10 min).
- the individual washing steps were necessary in order to remove the isoagglutinins (blood group antibodies), which could cause a disturbance of the alloreactivity during the measurement.
- the 15 ml Falcons were weighed once again and filled up to their original weight with medium. Only then 500 ⁇ of the recipient sample of one batch was transferred to the corresponding donor sample of the same batch. The total amount of cell suspension or whole blood in one batch is now 1 ml (FIG. 1).
- a mixture of co-stimulatory antibodies (1 ⁇ g / ml anti-CD28 and 1 ⁇ g / ml anti-CD49d) was added. The stimulation mixtures were mixed and then incubated for 2 h in the incubator (37 ° C, 6% C0 2 , with loose screwed lid).
- FACS staining For flow cytometric staining (FACS staining), in each case 200 ⁇ l of the cell suspension to be analyzed were transferred into FACS tubes and incubated in 2 ml of saponin buffer for 10 min. The incubation was carried out at RT in the dark, since the samples were already pre-stained with a fluorochrome-coupled OberfizzenantiISE that would fade in the light. The cells were permeabilized by the saponin, so that the subsequently added AK could enter the cells. After incubation, the tubes were centrifuged for 10 min at 353 g and then the supernatant was removed. 50 ⁇ AK mixture per sample was added by pipette (see Table 1), mixed and incubated for 30 to 45 min.
- the cells were washed with 3 ml of FACS buffer to remove free unbound fluorochrome-coupled AK. To centrifugation of the samples at 353 g for 7 min, the supernatant was aspirated and finally the cells were taken up in 400 ⁇ 1% PFA, mixed and analyzed by flow cytometer.
- Table 1 Composition of the antibody mix for different stains
- CD69 PerCP 2 CD69 PE 2
- Flow-activated cell sorting is a laser-assisted method for determining the specific light scattering and fluorescence properties of cells previously labeled with appropriate antibodies.
- the cell suspension is introduced by overpressure into a measuring cuvette.
- the cells are strongly accelerated by a surrounding carrier liquid, so that individual cells sequentially pass the laser beam at the analysis point, where they are recorded, analyzed and classified.
- the size and granularity characteristics of each cell can be displayed in a two-dimensional diagram and used to identify cell subpopulations.
- individual cells of a population or subpopulation can be more accurately identified and characterized. be siert. This can be done by staining cell-type-specific surface molecules (membrane-bound receptors such as CD3, CD4 or CD8) or after permeabilization of the cell membrane by detecting intracellularly localized antigens.
- the fluorochromes are excited by the laser and emit the light in the form of longer wavelength photons that can be measured by an optical system. Since different fluorochromes have different characteristic emission wavelengths despite the same excitation wavelength, it is possible to discriminate several differently coupled AKs with one laser and thereby simultaneously investigate different cell properties.
- the fluorochrome FITC fluorescein isothiocyanate
- FITC fluorescein isothiocyanate
- argon laser blue
- PE phycoerythrin
- PerCP perCP
- PE-Cy7 phycoerythrin cyanine 7
- Allophycocyanin (APC) is excited by a helium-neon laser (red) at 635 nm wavelength. The emission maximum of this dye is 660 nm.
- a flow cytometer (FACS Canto Tl) and the software program FACS Diva Software Version 6.1.3 were used for measurement and analysis and computerized data processing.
- the classification of the individual cells was carried out by means of "dot plot” and “density plot” representation of scattered light signals in the forward (FSC) and side scattered light (SSC).
- CD4 and CD8 T cells were detected by flow cytometry in whole blood as well as in PBMCs per sample and evaluated using a fixed gating strategy. In order to ensure a sufficient number of cells, the aim was to capture as many as 100,000 CD8 T cells per measurement.
- lymphocytes were divided into CD45 precolored (“donor” or CD45 +) and unstained (“recipient” or CD45) cells, respectively ( Figure 3). These were each further subdivided into CD8 and CD4 positive T cells ( Figure 4).
- the four cell populations (CD4 + CD45 +, CD4 + CD45-, CD8 + CD45 +, CD8 + CD45-) were divided into four subpopulations based on the expression of the activation marker CD69 and the cytokine IFNy. By dividing into quadrants, the percentage of the respective fluorescence signals in each quadrant could be determined. Alloreactive T cells were defined by coexpression of CD69 and IFNy and thus appeared in the upper right quadrant ( Figures 5 and 6).
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Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP13814447.2A EP2926135A1 (de) | 2012-11-30 | 2013-12-02 | Verfahren zur bestimmung einer verträglichkeit zwischen einem spender und einem empfänger mittels durchflusszytometrischer detektion alloreaktiver t-zellen |
US14/648,319 US20150309015A1 (en) | 2012-11-30 | 2013-12-02 | Method for determining compatibility between a donor and a recipient by means of the flow cytometric detection of alloreactive t cells |
JP2015544496A JP2016506494A (ja) | 2012-11-30 | 2013-12-02 | アロ反応性t細胞のフローサイトメトリー検出を利用した、ドナーとレシピエントとの間の適合性の決定法 |
KR1020157017586A KR20150091382A (ko) | 2012-11-30 | 2013-12-02 | 동종반응성 t 세포의 유세포 검출을 이용하여 공여체와 수용체 사이의 호환성을 결정하는 방법 |
CA2893068A CA2893068A1 (en) | 2012-11-30 | 2013-12-02 | Method for determining compatibility between a donor and a recipient by means of the flow cytometric detection of alloreactive t cells |
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EP12195029.9 | 2012-11-30 | ||
EP12195029 | 2012-11-30 |
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WO2014083201A1 true WO2014083201A1 (de) | 2014-06-05 |
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PCT/EP2013/075253 WO2014083201A1 (de) | 2012-11-30 | 2013-12-02 | Verfahren zur bestimmung einer verträglichkeit zwischen einem spender und einem empfänger mittels durchflusszytometrischer detektion alloreaktiver t-zellen |
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US (1) | US20150309015A1 (de) |
EP (1) | EP2926135A1 (de) |
JP (1) | JP2016506494A (de) |
KR (1) | KR20150091382A (de) |
CA (1) | CA2893068A1 (de) |
WO (1) | WO2014083201A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016082819A3 (de) * | 2014-11-29 | 2016-07-21 | David Schub | Verfahren zum nachweis antigen-spezifischer immunzellen in extrasanguinen flüssigkeiten |
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NZ749136A (en) * | 2016-05-25 | 2023-11-24 | Council Queensland Inst Medical Res | Methods of immunotherapy |
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2013
- 2013-12-02 WO PCT/EP2013/075253 patent/WO2014083201A1/de active Application Filing
- 2013-12-02 US US14/648,319 patent/US20150309015A1/en not_active Abandoned
- 2013-12-02 JP JP2015544496A patent/JP2016506494A/ja active Pending
- 2013-12-02 EP EP13814447.2A patent/EP2926135A1/de not_active Withdrawn
- 2013-12-02 KR KR1020157017586A patent/KR20150091382A/ko not_active Application Discontinuation
- 2013-12-02 CA CA2893068A patent/CA2893068A1/en not_active Abandoned
Non-Patent Citations (4)
Title |
---|
KORIN Y D ET AL: "A Novel Flow Assay for the Detection of Cytokine Secreting Alloreactive T Cells: Application to Immune Monitoring", HUMAN IMMUNOLOGY, NEW YORK, NY, US, vol. 66, no. 11, 1 November 2005 (2005-11-01), pages 1110 - 1124, XP027857134, ISSN: 0198-8859, [retrieved on 20051101] * |
MARTINS SERGIO L R ET AL: "Development of a novel flow cytometric assay to assess the phenotype and function of alloreactive human T cells", BLOOD; 45TH ANNUAL MEETING OF THE AMERICAN SOCIETY OF HEMATOLOGY; SAN DIEGO, CA, USA; DECEMBER 06-09, 2003, AMERICAN SOCIETY OF HEMATOLOGY, US, vol. 102, no. 11, 16 November 2003 (2003-11-16), pages 403b - 404b, XP008125456, ISSN: 0006-4971 * |
UDEME D. EKONG ET AL: "Lymphocyte activation markers may predict the presence of donor specific alloreactivity in pediatric living related liver transplant recipients", HUMAN IMMUNOLOGY, vol. 72, no. 5, 26 February 2011 (2011-02-26), pages 392 - 397, XP055058764, ISSN: 0198-8859, DOI: 10.1016/j.humimm.2011.02.003 * |
URBAN SESTER ET AL: "Rapid Identification of Preformed Alloreactive T Cells for Use in a Clinical Setting", TRANSPLANTATION, vol. 78, no. 4, 27 August 2004 (2004-08-27), pages 607 - 614, XP055058763, ISSN: 0041-1337, DOI: 10.1097/01.TP.0000131949.59284.4D * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016082819A3 (de) * | 2014-11-29 | 2016-07-21 | David Schub | Verfahren zum nachweis antigen-spezifischer immunzellen in extrasanguinen flüssigkeiten |
Also Published As
Publication number | Publication date |
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EP2926135A1 (de) | 2015-10-07 |
JP2016506494A (ja) | 2016-03-03 |
KR20150091382A (ko) | 2015-08-10 |
US20150309015A1 (en) | 2015-10-29 |
CA2893068A1 (en) | 2014-06-05 |
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