MiR-146b/Btg2 axis as a potential inducer of islet beta-cell decline during the progression of obesity to T2DM.

ABSTRACT: We evaluated the potential mechanisms responsible for inducing beta-cell decline during the progression of obesity to type 2 diabetes mellitus (T2DM). Between February 2021 and February 2022, 25 subjects with non-diabetic obesity, 20 subjects with obesity and new-onset T2DM, and 25 healthy volunteers were recruited. Circulating exosome-contained miRNA expression profiling was performed by miRNA sequencing. The role of specific miRNA was analyzed by a gain-of-function approach in Min6 beta-cells, mouse islets, and human islets. Expression of 83 exosomal miRNAs was differently regulated in the circulation of subjects with non-diabetic obesity. We focused on miR-146b, which was mildly up-regulated in non-diabetic obesity and dramatically up-regulated in obese new-onset T2DM. Using an obese di

SUBMITTER: Wang W 

PROVIDER: S-EPMC12242404 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature