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MicroRNA-351 promotes schistosomiasis-induced hepatic fibrosis by targeting the vitamin D receptor.


ABSTRACT: Aberrant expression of microRNAs (miRNAs) underlies a spectrum of human diseases including organ fibrosis, and hepatic stellate cells (HSCs) are the main effectors of hepatic fibrosis. Here, we showed that the expression of host miR-351 in HSCs was markedly reduced during the early stage of Schistosoma infection. However, this expression was significantly increased during the later stage of infection (after 52 d of infection). The elevated levels of miR-351 promoted hepatic fibrosis by targeting the vitamin D receptor (VDR), which is an antagonist of SMAD signaling. Importantly, efficient and sustained inhibition of miR-351 in liver tissues using the highly hepatotropic recombinant adeno-associated virus serotype 8 (rAAV8), alleviated the hepatic fibrosis, partially protecting the host from lethal schistosomiasis. In addition, we found that miR-351 is negatively regulated by IFN-? in HSCs during infection. At the early stage of infection, the elevated levels of IFN-? inhibited the expression of miR-351 in HSCs through activation of signal transducer and activator of transcription 1 and induction of IFN regulatory factor 2, which binds the promotor of pre-miR-351 Our study provides insights into the mechanisms by which miR-351 regulates schistosomiasis hepatic fibrosis and highlights the potential of rAAV8-mediated miR-351 inhibition as a therapeutic intervention for fibrotic diseases.

SUBMITTER: He X 

PROVIDER: S-EPMC5776818 | biostudies-other | 2018 Jan

REPOSITORIES: biostudies-other

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<i>MicroRNA-351</i> promotes schistosomiasis-induced hepatic fibrosis by targeting the vitamin D receptor.

He Xing X   Sun Yue Y   Lei Nanhang N   Fan Xiaobin X   Zhang Cheng C   Wang Yange Y   Zheng Kuiyang K   Zhang Dongmei D   Pan Weiqing W  

Proceedings of the National Academy of Sciences of the United States of America 20171218 1


Aberrant expression of microRNAs (miRNAs) underlies a spectrum of human diseases including organ fibrosis, and hepatic stellate cells (HSCs) are the main effectors of hepatic fibrosis. Here, we showed that the expression of host <i>miR-351</i> in HSCs was markedly reduced during the early stage of <i>Schistosoma</i> infection. However, this expression was significantly increased during the later stage of infection (after 52 d of infection). The elevated levels of <i>miR-351</i> promoted hepatic  ...[more]

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