4.7 Article Proceedings Paper

Islet Glia, Neurons, and beta Cells The Neuroimmune Interface in the Pathogenesis of Type 1 Diabetes

Journal

IMMUNOLOGY OF DIABETES V: FROM BENCH TO BEDSIDE
Volume 1150, Issue -, Pages 32-42

Publisher

WILEY-BLACKWELL
DOI: 10.1196/annals.1447.033

Keywords

autoimmunity; type 1 diabetes (T1D); NOD; peri-islet Schwann cells; sensory afferent neurons; islet; glia; GFAP

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Type 1 diabetes (T1D) is caused by autoimmune beta cell destruction. The early events triggering T1D and the forces that keep diabetic autoimmunity pancreas specific have been unclear. Our discovery that autoimmune islet destruction is not beta-cell-exclusive but includes cytotoxic T cell targeting of peri-islet glia, evoked the possibility that T1D pathogenesis may involve neuronal elements beyond beta cell/immune interactions. Recently, we have found that sensory afferent neurons are a critical component in prediabetes initiation, promoting islet inflammation through altered glucose homeostasis and progressive beta cell stress. These factors orchestrate a catastrophic cascade culminating in insulin insufficiency mediated by an autoimmune-prone host. This neuroimmuno-endocrinological triad explains diabetic inflammation as a consequence of local neuropeptide deficiency; leading to an innovative concept of disease pathogenesis with novel therapeutic implications.

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