Glucagon-like peptide 1 receptor is a T cell-negative costimulatory molecule

  • Moufida Ben Nasr
  • , Vera Usuelli
  • , Sergio Dellepiane
  • , Andy Joe Seelam
  • , Teresa Vanessa Fiorentino
  • , Francesca D'Addio
  • , Emma Fiorina
  • , Cong Xu
  • , Yanan Xie
  • , Hari Baskar Balasubramanian
  • , Eduardo Castillo-Leon
  • , Lara Loreggian
  • , Anna Maestroni
  • , Emma Assi
  • , Cristian Loretelli
  • , Ahmed Abdelsalam
  • , Basset El Essawy
  • , Silvia Uccella
  • , Ida Pastore
  • , Maria Elena Lunati
  • Gianmarco Sabiu, Adriana Petrazzuolo, Giacomo Ducci, Elena Sacco, Lucia Centofanti, Massimo Venturini, Serena Mazzucchelli, Deborah Mattinzoli, Masami Ikehata, Giuseppe Castellano, Gary Visner, Liu Kaifeng, Kang Mi Lee, Zhimin Wang, Domenico Corradi, Stefano La Rosa, Silvio Danese, Jun Yang, James F. Markmann, Gian Vincenzo Zuccotti, Reza Abdi, Franco Folli, Paolo Fiorina

Publications: Contribution to journalArticlePeer Reviewed

Abstract

Glucagon-like peptide-1 receptor (GLP-1R) is a key regulator of glucose metabolism known to be expressed by pancreatic β cells. We herein investigated the role of GLP-1R on T lymphocytes during immune response. Our data showed that a subset of T lymphocytes expresses GLP-1R, which is upregulated during alloimmune response, similarly to PD-1. When mice received islet or cardiac allotransplantation, an expansion of GLP-1Rpos T cells occurred in the spleen and was found to infiltrate the graft. Additional single-cell RNA sequencing (scRNA-seq) analysis conducted on GLP-1Rpos and GLP-1Rneg CD3+ T cells unveiled the existence of molecular and functional dissimilarities between both subpopulations, as the GLP-1Rpos are mainly composed of exhausted CD8 T cells. GLP-1R acts as a T cell-negative costimulatory molecule, and GLP-1R signaling prolongs allograft survival, mitigates alloimmune response, and reduces T lymphocyte graft infiltration. Notably, GLP-1R antagonism triggered anti-tumor immunity when tested in a preclinical mouse model of colorectal cancer.

Original languageEnglish
Pages (from-to)1302-1319.e12
JournalCell Metabolism
Volume36
Issue number6
DOIs
Publication statusPublished - 4 Jun 2024
Externally publishedYes

Funding

We thank Dr. Thorens for providing us with the anti-GLP-1R antibody used for pathology studies. We thank \u201C Fondazione Romeo and Enrica Invernizzi \u201D for their extraordinary support. F.D. was supported by the Italian Ministry of Health grant RF-2021-12372897 and by the Italian Ministry of University and Research grant 2022JY9CP . R.A. is supported by the NIH grant K24 AI116925 . P.F., C.L., and M.B.N. are supported by the Italian Ministry of University Research grants 20229ZA2YF , 2022NH9MXB , and 20225HWJMB , respectively.

Austrian Fields of Science 2012

  • 302012 Diabetology

Keywords

  • alloimmunity
  • cancer
  • GLP-1R
  • GLP-1R agonists
  • GLP-1R signaling
  • immune checkpoint

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