数字农科院2.0

Ssc-miR-101-3p inhibits hypoxia-induced apoptosis and inflammatory response in alveolar type-II epithelial cells of Tibetan pigs via targeting FOXO3

文献类型： 外文期刊

作者： Haonan Yuan;Xuanbo Liu;Binpeng Xi;Caixia Gao;Jinqiang Quan;Shengguo Zhao;Yangnan Yang

作者机构：

关键词： Alveolar type-II epithelial cells;FOXO3;Hypoxia;Ssc-miR-101-3p;Tibetan pigs

期刊名称： Scientific Reports

ISSN： 2045-2322

年卷期： 2024 年 14 卷 1 期

页码：

收录情况： SCIE（2024版）

摘要： Tibetan pigs are a unique swine strain adapted to the hypoxic environment of the plateau regions in China. The unique mechanisms underlying the adaption by Tibetan pigs, however, are still elusive. Only few studies have investigated hypoxia-associated molecular regulation in the lung tissues of animals living in the plateau region of China. Our previous study reported that ssc-miR-101-3p expression significantly differed in the lung tissues of Tibetan pigs at different altitudes, suggesting that ssc-miR-101-3p plays an important role in the adaptation of Tibetan pigs to high altitude. To understand the underlying molecular mechanism, in this study, the target genes of ssc-miR-101-3p and their functions were analyzed via various methods including qRT-PCR and GO and KEGG pathway enrichment analyses. The action of ssc-miR-101-3p was investigated by culturing alveolar type-II epithelial cells (ATII) of Tibetan pigs under hypoxic conditions and transfecting ATII cells with vectors overexpressing or inhibiting ssc-miR-101-3p. Overexpression of ssc-miR-101-3p significantly increased the proliferation of ATII cells and decreased the expression of inflammatory and apoptotic factors. The target genes of ssc-miR-101-3p were significantly enriched in FOXO and PI3K-AKT signaling pathways required to mitigate lung injury. Further, FOXO3 was identified as a direct target of ssc-miR-101-3p. Interestingly, ssc-miR-101-3p overexpression reversed the damaging effect of FOXO3 in the ATII cells. In conclusion, ssc-miR-101-3p targeting FOXO3 could inhibit hypoxia-induced apoptosis and inflammatory response in ATII cells of Tibetan pigs. These results provided new insights into the molecular mechanisms elucidating the response of lung tissues of Tibetan pigs to hypoxic stress.

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