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Author

Saptarshi Roy

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2 papers indexed here

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Review Open access Oct 2026

Beta Cell Stress to Epitope Diversification: Post‐Translationally Modified Antigens in Type 1 Diabetes

ABSTRACT Pancreatic beta cells are active participants in the loss of immune tolerance because their high secretory demand creates exceptional vulnerability to inflammatory exposure, endoplasmic reticulum (ER) stress, calcium dysregulation, and redox imbalance. These conditions can promote enzymatic and nonenzymatic ch...

Megan L. Proffer, Saptarshi Roy, Jon D. Piganelli · 0 citations
Open access Sep 2026

A Novel PD-L1 Splice Isoform Modulates β Cell Communication in Response to Interferon Signaling

β cell expression of the immune checkpoint ligand PD-L1 (encoded by CD274) limits autoimmune β cell destruction in type 1 diabetes (T1D). β cell display PD-L1 not only at the cell surface but also secreted on extracellular vesicles (EVs), which bind PD-1 and restrain CD8+ T cell activation. β cell IFN signaling is an e...

Chaitra Rao, Fei Huang, Saptarshi Roy et al. · 0 citations

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