Abstract
Hepatic stellate cell (HSC) activation is the key process in hepatic fibrosis (HF) development. Targeted death of HSCs could be effective in the prevention and treatment of HF. Phosphatidylethanolamine-binding protein (PEBP)1 can trigger ferroptosis by mediating peroxide production, but how it modulates HSC ferroptosis is not known. We screened natural small molecules that could bind with PEBP1, and investigated the mechanism by which it promotes HSC ferroptosis. The maximum binding energy of berberine with PEBP1 was − 8.51 kcal/mol, indicating that berberine could bind strongly with PEBP1. Berberine binding to PEBP1 could promote HSC ferroptosis via synergy of its actions with those of sorafenib, but it could not induce ferroptosis alone. Combined administration of berberine enhanced the ferroptotic effects of low-dose sorafenib upon HSCs. Herein, we revealed that PEBP1 might be a target that could enhance the effects of sorafenib, which could provide a new therapeutic approach for HF treatment.
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This study was supported by Humanities and Social Sciences Research Project of the Ministry of Education in 2020 (20YJC890054), Fujian Provincial Young Teachers' Education Research Project (Science and Technology category) (JAT220329).
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Conceptualization, Z.P.X., C.H.H.; methodology, Z.P.X, Y.Z. and C.H.H; software, Y.Z. and M.L; writing—original draft preparation, Z.P.X., M.L and C.H.H.; writing—review and editing, Z.P.X., M.L and C.H.H.; funding acquisition, M.L., Z.P.X.
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Xie, Z., Zhou, Y., Lin, M. et al. Binding of berberine to PEBP1 synergizes with sorafenib to induce the ferroptosis of hepatic stellate cells. Amino Acids 55, 1867–1878 (2023). https://doi.org/10.1007/s00726-023-03345-7
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DOI: https://doi.org/10.1007/s00726-023-03345-7