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Next Generation Sequencing Analysis of SRSF1 flox/flox and SRSF1-KO pancreatic islet Transcriptome

ABSTRACT: we report insulin secretion defects in SRSF1 Ins2-Cre mice, in which SRSF1 is ablated in pancreatic β cells.

ORGANISM(S): Mus musculus

PROVIDER: GSE173455 | GEO | 2023/04/17

REPOSITORIES: GEO

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Next-generation sequencing analysis of 7-month-old SRSF2 flox/flox and SRSF2-PKO mice pancreatic islet transcriptome

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Project description:Regulation of RNA processing contributes profoundly to tissue development and physiology. The serine-arginine-rich splicing factor 1 (SRSF1) is essential for hepatocyte function and survival. Although SRSF1 is mainly known for its many roles in mRNA metabolism, it is also crucial for maintaining genome stability. We show that acute liver damage in the setting of targeted SRSF1 deletion in mice is primarily mediated by the excessive formation of deleterious RNA–DNA hybrids (R-loops), which induce DNA damage. Combining hepatocyte-specific transcriptome, proteome, and RNA binding analyses, we demonstrate that widespread genotoxic stress following SRSF1 depletion results in global inhibition of mRNA transcription and protein synthesis, leading to impaired metabolism and trafficking of lipids. Accumulation of lipids in SRSF1-deficient hepatocytes is quickly followed by necroptotic cell death, inflammation, and fibrosis, resulting in NASH-like liver pathology. This pathogenesis is recapitulated in SRSF1-depleted human liver cancer cells illustrating a conserved and fundamental role for SRSF1 in preserving genome integrity and tissue homeostasis. This data set contains a proteomic comparison of hepatocytes from wild type vs. acute knockout of SRSF1. The acute knockout was generated by injecting 8-week-old SRSF1 fl/fl mice with a viral vector expressing Cre under the control of the liver-specific thyroxine binding globulin (TBG) promoter (AAV8-TBG-iCre). Controls were generated by injecting AAV8-TBG-GFP viral vector. The hepatocytes were isolated 2 weeks post injection.

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