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  • Title: MiR-98 is involved in rat embryo implantation by targeting Bcl-xl.
    Author: Xia HF, Jin XH, Cao ZF, Shi T, Ma X.
    Journal: FEBS Lett; 2014 Feb 14; 588(4):574-83. PubMed ID: 24444606.
    Abstract:
    In a previous study, via microRNA microarray analysis we found that miR-98 is differentially expressed in rat uteri during the peri-implantation period (unpublished data). However, the role of miR-98 in rat embryo implantation remains elusive. Here, we found that the level of miR-98 is lower on day 5 and 6 of gestation (g.d. 5-6) than that on g.d. 3-4 and g.d. 7-8 in rat. MiR-98 expression is significantly decreased by delayed implantation. Down-regulation of miR-98 promotes ESC proliferation and inhibits apoptosis. Up-regulation of miR-98 displays opposite effects. Further investigation revealed that miR-98 can bind to the 3'-untranslated region (3'-UTR) of B-cell lymphoma-extra large (Bcl-xl) to inhibit Bcl-xl translation. Collectively, down-regulation of miR-98 in rat uterus during the receptive phase is linked to the increase of cell proliferation via targeting Bcl-xl.
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