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β2-spectrin (SPTBN1) as a therapeutic target for diet-induced liver disease and preventing cancer development

December 15, 2021

Resource > Scientific publications >

β2-spectrin (SPTBN1) as a therapeutic target for diet-induced liver disease and preventing cancer development

Filed under: Disease modeling, MASLD/MASH, and Oncology

B2 Spectrin 2021 Graphic |
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Rao et al., 2021

The prevalence of nonalcoholic steatohepatitis (NASH) and liver cancer is increasing. De novo lipogenesis and fibrosis contribute to disease progression and cancerous transformation. Here, the authors found that β2-spectrin (SPTBN1) promotes sterol regulatory element (SRE)–binding protein (SREBP)–stimulated lipogenesis and development of liver cancer in mice fed a high-fat diet (HFD) or a western diet (WD). Either hepatocyte-specific knockout of SPTBN1 or siRNA-mediated therapy protected mice from HFD/WD-induced obesity and fibrosis, lipid accumulation, and tissue damage in the liver. Biochemical analysis suggested that HFD/WD induces SPTBN1 and SREBP1 cleavage by CASPASE-3 and that the cleaved products interact to promote expression of genes with sterol response elements. Analysis of human NASH tissue revealed increased SPTBN1 and CASPASE-3 expression. Thus, their data indicate that SPTBN1 represents a potential target for therapeutic intervention in NASH and liver cancer.

The findings within this publication were supported by data generated by our NASH Contract Research Services using our PhysioMimix NASH Assay and Liver-on-a-chip model

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