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research article
抑制微RNA-30d-5p促进线粒体自噬缓解高糖作用下的足细胞损伤
Authors
王 芳
蒋 晓立
+4 more
蔡 莹
邬 启元
郭 蓓
陈 生
Publication date
1 January 2025
Publisher
Zhejiang University Press
Doi
Cite
Abstract
目的探讨微RNA(miR)-30d-5p在高糖诱导下足细胞损伤中的作用。方法采用30 mmol/L葡萄糖诱导足细胞高糖化,使用miR-30d-5p抑制剂和模拟物转染,再经1 mg/mL 3-甲基腺嘌呤(3-MA)处理。定量逆转录聚合酶链反应检测miR-30d-5p的转染效率;流式细胞术检测细胞凋亡;蛋白质印迹法检测肾病蛋白、微管相关蛋白轻链(LC)3Ⅱ/LC3Ⅰ、P62、自噬相关基因(ATG)5蛋白、PTEN诱导假定激酶(PINK)1和Parkin基因(PARK2)蛋白表达。JC-1作为荧光探针检测线粒体膜电位,通过相关试剂盒检测细胞中的三磷酸腺苷(ATP)含量。结果在高糖诱导下,足细胞凋亡增加,miR-30d-5p和P62表达上调,肾病蛋白、ATG5、PINK1、PARK2和LC3Ⅱ/LC3Ⅰ表达水平降低(均P<0.01)。miR-30d-5p抑制剂部分逆转了高糖对足细胞凋亡以及ATG5、PINK1、PARK2、肾病蛋白、LC3Ⅱ/LC3Ⅰ和P62表达的影响(均P<0.01)。高糖诱导足细胞线粒体膜电位流失、ATP含量减少,抑制miR-30d-5p后能增加膜电位和ATP含量(均P<0.05)。自噬抑制剂3-MA和miR-30d-5p模拟物可逆转miR-30d-5p抑制对高糖诱导的足细胞凋亡、自噬和线粒体功能的影响(均P<0.05)。结论抑制miR-30d-5p可能通过促进ATG5、PINK1、PARK2的表达促进线粒体自噬,进而缓解高糖诱导的足细胞损伤。</sec
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Last time updated on 16/05/2025