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- W2562201772 abstract "Regeneration of hepatic sinusoidal vasculature is essential for non-fibrotic liver regrowth and restoration of its metabolic capacity. However, little is known about how this specialized vascular niche is regenerated. Here we show that activation of endothelial sphingosine-1-phosphate receptor-1 (S1P1) by its natural ligand bound to HDL (HDL-S1P) induces liver regeneration and curtails fibrosis. In mice lacking HDL-S1P, liver regeneration after partial hepatectomy was impeded and associated with aberrant vascular remodeling, thrombosis and peri-sinusoidal fibrosis. Notably, this “maladaptive repair” phenotype was recapitulated in mice that lack S1P1 in the endothelium. Reciprocally, enhanced plasma levels of HDL-S1P or administration of SEW2871, a pharmacological agonist specific for S1P1 enhanced regeneration of metabolically functional vasculature and alleviated fibrosis in mouse chronic injury and cholestasis models. This study shows that natural and pharmacological ligands modulate endothelial S1P1 to stimulate liver regeneration and inhibit fibrosis, suggesting that activation of this pathway may be a novel therapeutic strategy for liver fibrosis." @default.
- W2562201772 created "2017-01-06" @default.
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- W2562201772 creator A5090799132 @default.
- W2562201772 date "2016-12-22" @default.
- W2562201772 modified "2023-10-03" @default.
- W2562201772 title "HDL activation of endothelial sphingosine-1-phosphate receptor-1 (S1P1) promotes regeneration and suppresses fibrosis in the liver" @default.
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- W2562201772 doi "https://doi.org/10.1172/jci.insight.87058" @default.
- W2562201772 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/5161208" @default.
- W2562201772 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/28018969" @default.
- W2562201772 hasPublicationYear "2016" @default.
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