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  • Title: The miR-410-5p /ITGA6 axis participates in the pathogenesis of recurrent abortion by regulating the biological function of trophoblast.
    Author: Wu S, Liu H, Zhou M, Shang Y, Luo L, Chen J, Yang J.
    Journal: J Reprod Immunol; 2022 Aug; 152():103647. PubMed ID: 35667342.
    Abstract:
    The purpose of this study was to determine the regulation of the miR-410-5p /ITGA6 axis on the biological functions of trophoblast cells and the mechanism involved in recurrent spontaneous abortion（RSA）. We used qRT-PCR and Western blotting to quantify the expression levels of Mir-410-5p and ITGA6 in placenta of RSA and normal, and found that compared with normal placenta, the placenta of RSA patients showed higher miR-410-5p and lower ITGA6 expression. Dual luciferase reporter gene assay confirmed the binding of miR-410-5p to ITGA6. The expression of miR-410-5p and ITGA6, and proliferation, apoptosis, invasion and migration of trophoblast cells and the effect on the polarization of M2 macrophages were detected in the trophoblast derived cell lines HTR8/Svneo transfected with miR-410-5p mimic, sh-miR-410-5p and si-ITGA6 respectively. Meanwhile, the molecular mechanism of ITGA6 regulation on trophoblast cells was explored. Transfection with miR-410-5p mimic or si-ITGA6 attenuated the proliferation, migration and invasion and induced apoptosis of HTR-8/SVneo cells. Transfection of sh-miR-410-5p promoted proliferation, migration and invasion, and weakened apoptosis of HTR-8/SVneo cells. In addition, overexpression of miR-410-5p in trophoblast cells inhibited the polarization of M2 macrophages, while knockdown of miR-410-5p was beneficial to recruitment of trophoblast cell and promoted the polarization of M2 macrophages. ITGA6 may affect the biological functions of trophoblast cells by regulating PI3K/AKT and MAPK signaling pathways. In conclusion, miR-410-5p mediates trophoblast cell proliferation, apoptosis, invasion and migration through regulating ITGA6 expression.
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