ENDO-DIABETOLOGY

Type 1 diabetes (T1D) is characterized by the destruction of pancreatic β-cells by the immune system while neighboring α-cells are spared, even though both cell types are dysfunctional. Recent research indicates that there are important differences between the two cell types that contribute to this differential destruction. These differences include higher expression of the antiapoptotic gene BCL2L1 and the protective chaperone BiP in α-cells, as well as higher expression of viral recognition and innate immune response genes and the immune-inhibitory molecule HLA-E in α-cells. These findings suggest that α-cells have an enhanced capacity to endure viral infections and endoplasmic reticulum stress, which enables them to better survive early stressors that can cause cell death and subsequently reduce antigen presentation to the immune system. Additionally, the processing of pre-proglucagon precursor in enteroendocrine cells might favor immune tolerance towards this potential self-antigen compared to pre-proinsulin.

Title: Understanding the Differential Destruction of Pancreatic β-cells and α-cells in Type 1 Diabetes: Insights from Recent Research

NEUROLOGY

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GYNAECOLOGY - IVF

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Why does the immune syste...

Why does the immune system destroy pancreatic β-cells but not α-cells in type 1 diabetes?