Transcriptomics

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Temporal Transcriptomic and Proteomic Landscapes of Deteriorating Pancreatic Islets in Type 2 Diabetic Rats


ABSTRACT: Progressive reductions in β-cell mass and function comprise the core of the pathogenesis mechanism leading to type 2 diabetes (T2D). To understand the molecular events in this process, we quantified the temporal transcriptome and proteome of pancreatic islets from Goto-Kakizaki (GK) rats at different stages of diabetes. Integrated omics analysis allowed us to unravel the chronological order of T2D-related molecular events during GK islet deterioration. Two major events occur early in the disease, specifically, a reduction in β-cell mass caused by defective neogenesis and senescence-related low proliferation, and metabolic shift caused by mitochondrial dysfunction. Furthermore, our data revealed the evolution of compensation failure in GK islets and two distinct stages of islet inflammation: priming and amplification. Our study offers a valuable resource for the diabetes research community and will facilitate further studies aimed at protecting β-cell mass and function.

ORGANISM(S): Rattus norvegicus

PROVIDER: GSE81811 | GEO | 2017/12/22

SECONDARY ACCESSION(S): PRJNA322601

REPOSITORIES: GEO

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