Abstract

Liver fibrosis is one of the histopathological characters duringEchinococcus multilocularisinfection. The activation of hepatic stellate cells (HSCs) is a key event in the development of liver fibrosis. However, the molecular mechanism of HSC activation in theE.multilocularisinfection-induced liver fibrosis remains largely unclear. Here, we reported that mmu-miR-342-3p was most dominantly expressed in HSCs and was upregulated in the HSCs in response toE.multilocularisinfection. We further showed that mmu-miR-342-3p was able to bind to the 3’ UTR of theZbtb7agene and regulated its expression. Moreover, mmu-miR-342-3p expression was negatively correlated with its target geneZbtb7ain HSCs duringE.multilocularisinfection. Knockdown of mmu-miR-342-3p promoted the expression ofGfapin the activated HSCsin vitro. In theE.multilocularis-infected mice, knockdown of mmu-miR-342-3p suppressed the expression ofα-Sma,Col1α1, andTGF-βbut promoted the expression ofGfap. Therefore, mmu-miR-342-3p is a key regulator for activation of HSCs, and inhibiting mmu-miR-342-3p to suppressed Zbtb7a-mediated TGF-β signaling in activated HSCs could be a novel strategy to treat liver fibrosis induced byE.multilocularis.

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