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TM4SF5-mediated abnormal food-intake behavior and apelin expression facilitate non-alcoholic fatty liver disease features.


ABSTRACT: Transmembrane 4 L six family member 5 (TM4SF5) engages in non-alcoholic steatohepatitis (NASH), although its mechanistic roles are unclear. Genetically engineered Tm4sf5 mice fed ad libitum normal chow or high-fat diet for either an entire day or a daytime-feeding (DF) pattern were analyzed for metabolic parameters. Compared to wild-type and Tm4sf5-/- knockout mice, hepatocyte-specific TM4SF5-overexpressing Alb-TGTm4sf5-Flag (TG) mice showed abnormal food-intake behavior during the mouse-inactive daytime, increased apelin expression, increased food intake, and higher levels of NASH features. DF or exogenous apelin injection of TG mice caused severe hepatic pathology. TM4SF5-mediated abnormal food intake was correlated with peroxisomal β-oxidation, mTOR activation, and autophagy inhibition, with triggering NASH phenotypes. Non-alcoholic fatty liver disease (NAFLD) patients' samples revealed a correlation between serum apelin and NAFLD activity score. Altogether, these observations suggest that hepatic TM4SF5 may cause abnormal food-intake behaviors to trigger steatohepatitic features via the regulation of peroxisomal β-oxidation, mTOR, and autophagy.

SUBMITTER: Pinanga YD 

PROVIDER: S-EPMC10475478 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature

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TM4SF5-mediated abnormal food-intake behavior and apelin expression facilitate non-alcoholic fatty liver disease features.

Pinanga Yangie Dwi YD   Lee Han Ah HA   Shin Eun-Ae EA   Lee Haesong H   Pyo Kyung-Hee KH   Kim Ji Eon JE   Lee Eun Hae EH   Kim Wonsik W   Kim Soyeon S   Kim Hwi Young HY   Lee Jung Weon JW  

iScience 20230814 9


Transmembrane 4 L six family member 5 (TM4SF5) engages in non-alcoholic steatohepatitis (NASH), although its mechanistic roles are unclear. Genetically engineered <i>Tm4sf5</i> mice fed <i>ad libitum</i> normal chow or high-fat diet for either an entire day or a daytime-feeding (DF) pattern were analyzed for metabolic parameters. Compared to wild-type and <i>Tm4sf5</i><sup>-/-</sup> knockout mice, hepatocyte-specific TM4SF5-overexpressing <i>Alb</i>-TG<sup>Tm4sf5-Flag</sup> (TG) mice showed abno  ...[more]

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