Increased COX6A2 Promotes Pancreatic β-Cell Apoptosis and Is Suppressed in Diabetic GK Rats After Roux-en-Y Gastric Bypass.

Kong, Xiangchen; Yan, Dan; Shao, Lianqi; Li, Bingfeng; Lv, Simian; Tu, Yifan; Zhang, Yingqi; Shu, Xingsheng et al. · Diabetes · 2025

basic_science · Level V

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Abstract

Cytochrome c oxidase subunit 6A2 (COX6A2) expression is increased in diabetic islets. Increased COX6A2 promotes β-cell apoptosis via modulation of cyclophilin D-mediated cytochrome c release from mitochondria to the cytoplasm. Carbohydrate-responsive element-binding protein epigenetically regulates COX6A2 expression in β-cells. Roux-en-Y gastric bypass reduces COX6A2 expression by regulating the glucagon-like peptide 1/cAMP-dependent protein kinase/carbohydrate-responsive element-binding protein signaling pathway.

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