Testin was regulated by circRNA3175-miR182 and inhibited endometrial epithelial cell apoptosis in pre-receptive endometrium of dairy goats
2018
: Circular RNAs (circRNAs) in various tissues and cell types from mammalian sources have been studied. However, present knowledge on circRNAs in the development of pre-receptive endometrium (PE) in dairy goats is limited. In the pre-receptive endometrium of dairy goats, higher circRNA3175 (ciR3175) levels, lower miR-182 levels and higher Testin (TES) levels were detected. And ciR3175 could decreased the miR-182 levels by acting as a miRNA sponge, and miR-182 could down-regulated the expression level of TES via the predicted target site in endometrial epithelial cells (EECs) in vitro. Via this way, ciR3175 functioned as a competing endogenous RNAs (ceRNA) that sequestered miR-182, thereby protecting TES transcripts from miR-182-mediated suppression in EECs in vitro. Further, TES inhibited EECs apoptosis by decreasing the expression level of BCL-2/BAX via the MAPK pathway. Thus, a ciR3175-miR182-TES pathway in the endometrium was identified in EECs, and the modulation of which could emerge as a potential target in regulating the pre-receptive endometrium development in dairy goats.
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