T-Cell Epitopes Shared Between Immunizing HLA and Donor HLA Associate With Graft Failure After Kidney Transplantation

  • Emma T M Peereboom
  • , Benedict M Matern
  • , Toshihide Tomosugi
  • , Matthias Niemann
  • , Julia Drylewicz
  • , Irma Joosten
  • , Wil A Allebes
  • , Arnold van der Meer
  • , Luuk B Hilbrands
  • , Marije C Baas
  • , Franka E van Reekum
  • , Marianne C Verhaar
  • , Elena G Kamburova
  • , Marc A J Seelen
  • , Jan Stephan Sanders
  • , Bouke G Hepkema
  • , Annechien J Lambeck
  • , Laura B Bungener
  • , Caroline Roozendaal
  • , Marcel G J Tilanus
  • Christien E Voorter, Lotte Wieten, Elly M van Duijnhoven, Mariëlle A C J Gelens, Maarten H L Christiaans, Frans J van Ittersum, Azam Nurmohamed, Neubury M Lardy, Wendy Swelsen, Karlijn A van der Pant, Neelke C van der Weerd, Ineke J M Ten Berge, Fréderike J Bemelman, Aiko P J de Vries, Johan W de Fijter, Michiel G H Betjes, Dave L Roelen, Frans H Claas, Henny G Otten, Sebastiaan Heidt, Arjan D van Zuilen, Takaaki Kobayashi, Kirsten Geneugelijk, Eric Spierings

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Abstract

CD4+ T-helper cells play an important role in alloimmune reactions following transplantation by stimulating humoral as well as cellular responses, which might lead to failure of the allograft. CD4+ memory T-helper cells from a previous immunizing event can potentially be reactivated by exposure to HLA mismatches that share T-cell epitopes with the initial immunizing HLA. Consequently, reactivity of CD4+ memory T-helper cells toward T-cell epitopes that are shared between immunizing HLA and donor HLA could increase the risk of alloimmunity following transplantation, thus affecting transplant outcome. In this study, the amount of T-cell epitopes shared between immunizing and donor HLA was used as a surrogate marker to evaluate the effect of donor-reactive CD4+ memory T-helper cells on the 10-year risk of death-censored kidney graft failure in 190 donor/recipient combinations using the PIRCHE-II algorithm. The T-cell epitopes of the initial theoretical immunizing HLA and the donor HLA were estimated and the number of shared PIRCHE-II epitopes was calculated. We show that the natural logarithm-transformed PIRCHE-II overlap score, or Shared T-cell EPitopes (STEP) score, significantly associates with the 10-year risk of death-censored kidney graft failure, suggesting that the presence of pre-transplant donor-reactive CD4+ memory T-helper cells might be a strong indicator for the risk of graft failure following kidney transplantation.

Original languageEnglish
Article number784040
Pages (from-to)1-13
JournalFrontiers in Immunology
Volume12
DOIs
Publication statusPublished - 18 Nov 2021

Keywords

  • HLA antigens
  • PIRCHE-II
  • T-cell epitope
  • T-cell memory
  • graft failure
  • kidney transplantation
  • shared T-cell epitopes

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