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Identification of the β cell antigen targeted by a prevalent population of pathogenic CD8+ T cells in autoimmune diabetes
Journal article   Open access   Peer reviewed

Identification of the β cell antigen targeted by a prevalent population of pathogenic CD8+ T cells in autoimmune diabetes

Scott M Lieberman, Anne M Evans, Bingye Han, Toshiyuki Takaki, Yuliya Vinnitskaya, Jennifer A Caldwell, David V Serreze, Jeffrey Shabanowitz, Donald F Hunt, Stanley G Nathenson, …
Proceedings of the National Academy of Sciences - PNAS, Vol.100(14), pp.8384-8388
07/08/2003
DOI: 10.1073/pnas.0932778100
PMCID: PMC166238
PMID: 12815107
url
https://doi.org/10.1073/pnas.0932778100View
Published (Version of record) Open Access

Abstract

Type 1 diabetes is an autoimmune disease in which autoreactive T cells attack and destroy the insulin-producing pancreatic β cells. CD8 + T cells are essential for this β cell destruction, yet their specific antigenic targets are largely unknown. Here, we reveal that the autoantigen targeted by a prevalent population of pathogenic CD8 + T cells in nonobese diabetic mice is islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP). Through tetramer technology, IGRP-reactive T cells are readily detected in islets and peripheral blood directly ex vivo . The human IGRP gene maps to a diabetes susceptibility locus, suggesting that IGRP also may be an antigen for pathogenic T cells in human type 1 diabetes and, thus, a new, potential target for diagnostic and therapeutic approaches.
Biological Sciences

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