Adult-onset type 1 diabetes patients display decreased IGRP-specific Tr1 cells in blood

Daisuke Chujo, Thien Son Nguyen, Emile Foucat, Derek Blankenship, Jacques Banchereau, Gerald T. Nepom, Damien J. Chaussabel, Hideki Ueno

Research output: Contribution to journalArticle

8 Citations (Scopus)


The breakdown of immune tolerance against islet antigens causes type 1 diabetes (T1D). The antigens associated with adult-onset T1D (AT1D) remain largely undefined. It is possible that AT1D patients display a unique type of CD4+ T cells specific for a certain islet antigen. Here we analyzed the cytokine production profiles of CD4+ helper T (Th) cells that are specific for three islet antigens; GAD65, preproinsulin, and IGRP in patients with AT1D, juvenile-onset T1D (JT1D), and age-, gender- and human leukocyte antigen (HLA)-matched control adults. While IGRP-specific Th cells in AT1D patients were dominantly Th1 cells, IGRP-specific Th cells in control adults and JT1D patients were dominantly Th2 and T regulatory type 1 (Tr1) cells. Notably, the frequency of IGRP-specific Tr1 cells was significantly lower in AT1D patients than in control adults and JT1D patients. In conclusion, our study suggests that IGRP-specific Th cells play a unique pathogenic role in AT1D.

Original languageEnglish
Pages (from-to)270-277
Number of pages8
JournalClinical Immunology
Issue number2
Publication statusPublished - 1 Dec 2015
Externally publishedYes



  • CD4 T cells
  • Islet antigens
  • Islet-specific glucose 6 phosphatase catalytic subunit-related protein
  • T regulatory type 1 (Tr1) cells
  • Type 1 diabetes

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology

Cite this

Chujo, D., Nguyen, T. S., Foucat, E., Blankenship, D., Banchereau, J., Nepom, G. T., Chaussabel, D. J., & Ueno, H. (2015). Adult-onset type 1 diabetes patients display decreased IGRP-specific Tr1 cells in blood. Clinical Immunology, 161(2), 270-277.