Development of a cross-platform biomarker signature to detect renal transplant tolerance in humans
Pervinder Sagoo, … , Maria P. Hernandez-Fuentes, Robert I. Lechler
Pervinder Sagoo, … , Maria P. Hernandez-Fuentes, Robert I. Lechler
Published May 24, 2010
Citation Information: J Clin Invest. 2010;120(6):1848-1861. https://doi.org/10.1172/JCI39922.
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Research Article

Development of a cross-platform biomarker signature to detect renal transplant tolerance in humans

Abstract

Identifying transplant recipients in whom immunological tolerance is established or is developing would allow an individually tailored approach to their posttransplantation management. In this study, we aimed to develop reliable and reproducible in vitro assays capable of detecting tolerance in renal transplant recipients. Several biomarkers and bioassays were screened on a training set that included 11 operationally tolerant renal transplant recipients, recipient groups following different immunosuppressive regimes, recipients undergoing chronic rejection, and healthy controls. Highly predictive assays were repeated on an independent test set that included 24 tolerant renal transplant recipients. Tolerant patients displayed an expansion of peripheral blood B and NK lymphocytes, fewer activated CD4+ T cells, a lack of donor-specific antibodies, donor-specific hyporesponsiveness of CD4+ T cells, and a high ratio of forkhead box P3 to α-1,2-mannosidase gene expression. Microarray analysis further revealed in tolerant recipients a bias toward differential expression of B cell–related genes and their associated molecular pathways. By combining these indices of tolerance as a cross-platform biomarker signature, we were able to identify tolerant recipients in both the training set and the test set. This study provides an immunological profile of the tolerant state that, with further validation, should inform and shape drug-weaning protocols in renal transplant recipients.

Authors

Pervinder Sagoo, Esperanza Perucha, Birgit Sawitzki, Stefan Tomiuk, David A. Stephens, Patrick Miqueu, Stephanie Chapman, Ligia Craciun, Ruhena Sergeant, Sophie Brouard, Flavia Rovis, Elvira Jimenez, Amany Ballow, Magali Giral, Irene Rebollo-Mesa, Alain Le Moine, Cecile Braudeau, Rachel Hilton, Bernhard Gerstmayer, Katarzyna Bourcier, Adnan Sharif, Magdalena Krajewska, Graham M. Lord, Ian Roberts, Michel Goldman, Kathryn J. Wood, Kenneth Newell, Vicki Seyfert-Margolis, Anthony N. Warrens, Uwe Janssen, Hans-Dieter Volk, Jean-Paul Soulillou, Maria P. Hernandez-Fuentes, Robert I. Lechler

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Figure 2

Flow cytometry analysis of CD4+ T cell expression of CD25 in peripheral blood of renal transplant recipient groups and HCs.

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Flow cytometry analysis of CD4+ T cell expression of CD25 in peripheral ...
Flow cytometry analysis of CD4+ T cell expression of CD25 of the training (A and B) and test set groups (C and D). Box plots show median and interquartile range. Whiskers above and below the boxes indicate the 5th and 95th percentiles. Percentages of CD4+ T cells with intermediate (CD4+CD25int) and high (CD4+CD25hi) CD25 expression are shown. Two-sided P values for Mann-Whitney U test comparisons between Tol-DF patients and the rest of the groups are shown (**P < 0.01, *P < 0.05). P values for comparisons between other study groups are shown in Supplemental Table 1, A and B.