Deficiency in B7-H1 (PD-L1)/PD-1 Coinhibition Triggers Pancreatic β-Cell Destruction by Insulin-Specific, Murine CD8 T-Cells

Abstract

An imbalance between costimulator (B7.1) and coinhibitor (B7-H1) signals on pancreatic beta-cells can trigger pancreatic beta-cell-destruction by preproinsulin-specific CD8 T-cells. Hence, regulation of the susceptibility of the beta-cells for a preproinsulin-specific CD8 T-cell attack can allow or suppress EAD.