期刊
ISCIENCE
卷 24, 期 12, 页码 -出版社
CELL PRESS
DOI: 10.1016/j.isci.2021.103428
关键词
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资金
- Department of Science and Technology (DST), Govt. of India [DST/SJF/LSA-03/2014-15]
- Council for Scientific and Industrial Research (CSIR) [MLP-139]
- University Grant Commission (UGC)
- Department of Biotechnology, Govt. of India
miR-122 in the mammalian liver regulates metabolic homeostasis and plays a role in controlling tissue inflammation through intercellular transfer. MMP2 is essential for the transfer of extracellular vesicles and their miRNA content between hepatic and non-hepatic cells.
Hepatic miRNA, miR-122, plays an important role in controlling metabolic homeostasis in mammalian liver. Intercellular transfer of miR-122 was found to play a role in controlling tissue inflammation. miR-122, as part of extracellular vesicles released by lipid-exposed hepatic cells, are taken up by tissue macrophages to activate them and produce inflammatory cytokines. Matrix metalloprotease 2 or MMP2 was found to be essential for transfer of extracellular vesicles and their miRNA content from hepatic to non-hepatic cells. MMP2 was found to increase the movement of the extracellular vesicles along the extracellular matrix to enhance their uptake in recipient cells. Inhibition of MMP2 restricts functional transfer of hepatic miRNAs across the hepatic and non-hepatic cell boundaries, and by targeting MMP2, we could reduce the innate immune response in mammalian liver by preventing intra-tissue miR-122 transfer. MMP2 thus could be a useful target to restrict high-fat-diet-induced obesity-related metaflammation.
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