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Abstract Title:

Fucoxanthin exerts anti-fibrogenic effects in hepatic stellate cells.

Abstract Source:

Biochem Biophys Res Commun. 2019 Apr 11. Epub 2019 Apr 11. PMID: 30982574

Abstract Author(s):

Mi-Bo Kim, Minkyung Bae, Siqi Hu, Hyunju Kang, Young-Ki Park, Ji-Young Lee

Article Affiliation:

Mi-Bo Kim

Abstract:

The objective of this study was to evaluate whether fucoxanthin (FCX) have anti-fibrogenic properties in hepatic stellate cells (HSCs). FCX significantly decreased basal and transforming growth factorβ1 (TGFβ1)-induced mRNA levels of fibrogenic genes with concomitant decreases in their protein levels in LX-2 cells. The phosphorylation of SMA- and MAD-related protein (SMAD3) was increased by TGFβ1, which was attenuated by FCX. Importantly, when LX-2 cells were treated with FCX and SIS3, aSMAD3 inhibitor, there was synergistic repression of fibrogenic gene expression. The anti-fibrogenic effect of FCX was also confirmed in primary human HSCs. FCX prevented TGFβ1-induced accumulation of reactive oxygen species by diminishing mRNA level of NADPH oxidase 4 (NOX4) in LX-2 cells. WhenFCX was present during the activation of quiescent mouse primary HSCs, it decreased the expression of fibrogenic genes while diminishing intracellular lipid droplets. The results suggest that FCX exerts an anti-fibrogenic effect in HSCs primarily by preventing TGFβ1-induced pro-fibrogenic genes expression via inhibition of SMAD3 activation and by inhibiting the activation of quiescent HSCs.

Study Type : In Vitro Study

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