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Using transcriptional profiling to develop a diagnostic test of operational tolerance in liver transplant recipients
Marc Martínez-Llordella, … , Antoni Rimola, Alberto Sánchez-Fueyo
Marc Martínez-Llordella, … , Antoni Rimola, Alberto Sánchez-Fueyo
Published July 24, 2008
Citation Information: J Clin Invest. 2008;118(8):2845-2857. https://doi.org/10.1172/JCI35342.
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Research Article

Using transcriptional profiling to develop a diagnostic test of operational tolerance in liver transplant recipients

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Abstract

A fraction of liver transplant recipients are able to discontinue all immunosuppressive therapies without rejecting their grafts and are said to be operationally tolerant to the transplant. However, accurate identification of these recipients remains a challenge. To design a clinically applicable molecular test of operational tolerance in liver transplantation, we studied transcriptional patterns in the peripheral blood of 80 liver transplant recipients and 16 nontransplanted healthy individuals by employing oligonucleotide microarrays and quantitative real-time PCR. This resulted in the discovery and validation of several gene signatures comprising a modest number of genes capable of identifying tolerant and nontolerant recipients with high accuracy. Multiple peripheral blood lymphocyte subsets contributed to the tolerance-associated transcriptional patterns, although NK and γδTCR+ T cells exerted the predominant influence. These data suggest that transcriptional profiling of peripheral blood can be employed to identify liver transplant recipients who can discontinue immunosuppressive therapy and that innate immune cells are likely to play a major role in the maintenance of operational tolerance in liver transplantation.

Authors

Marc Martínez-Llordella, Juan José Lozano, Isabel Puig-Pey, Giuseppe Orlando, Giuseppe Tisone, Jan Lerut, Carlos Benítez, Jose Antonio Pons, Pascual Parrilla, Pablo Ramírez, Miquel Bruguera, Antoni Rimola, Alberto Sánchez-Fueyo

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