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Abstract

Method for determination of compatibility between a donor and a recipient by flow cytometric detection of allo-reactive T cells comprising the following steps:

a) addition of a marker to a obtained blood sample from a donor/recipient pair to be analyzed, called labelled sample in the following, wherein the marker is suitable for discrimination of a sample from the recipient; the other blood sample obtained from donor/recipient pair to be analyzed is called in the following non-labelled sample,b) at least one-time dilution of both samples with a first medium, separation of cellular parts of the samples from the liquid phase,c) respective separated reuptake of the cellular parts, in particular in the same volume, of the blood sample residue of the labelled sample, of the blood sample residue of the non-labelled sample in a second mediumd) mixing of a part from the non-labelled sample and a part of the labelled sample, in particularly in a ratio of about 1:1 under preservation of a mixture,e) stimulation of antigen presenting cells (APC) in a mixture of labelled and non-labelled sample according to step d) of claim 1 by addition of anti-CD28− antibodies or anti-CD28− antibodies and anti-CD49d-antibodies followed byf) a first incubation of the mixture for the period of 1.5 h to 2.5 h, preferably 2 h, at a temperature of 35-39° C., preferably 37° C., optional under protective atmosphere, CO2 atmosphere,g) addition of a secretion inhibitor,h) mixing of the sample of step d) of claim 1, i) followed by a second incubation for a period of at least 2.5 h at a temperature of 35-39° C., preferably 37° C., optional under protective atmosphere, CO2 atmosphere,j) if necessary lysing of erythrocytes,k) flow cytometric detection of lymphocytes by marking and flow cytometric detection of CD4 or CD8 lymphocytes e.g. by labelled anti-CD4 and/or anti-CD8 antibodiesl) flow cytometric detection of lymphocytes activated by a intracellular cytokine, activated lymphocytes and lymphocytes expressing an activation marker,m) wherein a present allo-reactivity was detected between the individual, from which the labelled sample and that from which the non-labelled sample was obtained, if in the flow cytometric detection the following results occur: a. marking pos/CD4 pos/CD69 pos/INFgamma pos,b. marking neg/CD4 pos/CD69 pos/INFgamma pos,c. marking pos/CD8 pos/CD69 pos/INFgamma pos,d. marking pos/CD8 pos/CD69 pos/INFgamma

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First Claim