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Succinate supplementation alleviates liver cancer by inhibiting the FN1/SQLE axis-mediated cholesterol biosynthesis
Shuyuan Chang1, Ayaka Tomii2, Yunfei Zhou1
1NHC Key Laboratory of Molecular Probes and Targeted Diagnosis and Therapy, The Fourth Hospital of Harbin Medical University, Harbin 15001, China.
Abstract:
Succinate is a crucial metabolite in the TCA cycle and contributes to cancer development. However, the role of exogenous succinate in hepatocellular carcinoma (HCC) is unclear. Here, we report that the concentration of succinate in HCC tissues is lower compared to adjacent normal tissues, as determined by spatial metabolomics and quantitative metabolomics analysis. Succinate supplementation exhibits an anti-tumorigenic effect, inhibiting cell proliferation and colony formation in liver cancer cells but not in non-tumor LO2 cells. Additionally, succinate supplementation significantly reduces tumor formation in xenograft nude mice models and carcinogen-induced WT mice models. The anti-tumorigenic function of succinate is mechanistically mediated by FN1-activated SQLE-related cholesterol biosynthesis. Our study demonstrates that exogenous succinate acts as a cholesterol biosynthesis inhibitor to suppress HCC both in vitro and in vivo, highlighting its potential therapeutic applications.
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