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p53 induces miR-199a-3p to suppress mechanistic target of rapamycin activation in cisplatin-induced acute kidney injury.

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机构: [1]Department of Nephrology, The Affiliated Jiangmen TCM Hospital of Jinan University, Jiangmen, Guangdong, P. R. China [2]Department of Nephrology, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong, P. R. China [3]Department of Acupuncture Moxibustion and Massage, Hunan University of Chinese Medicine, Changsha, Hunan, P.R. China
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关键词: acute kidney injury cisplatin miR‐199a‐3p mechanistic target of rapamycin p53

摘要:
How p53 participates in acute kidney injury (AKI) progress and what are the underlying mechanisms remain illusive. For this issue, it is important to probe into the role of p53 in cisplatin-induced AKI. We find that p53 was upregulated in cisplatin-induced AKI, yet, pifithrin-α inhibites the p53 expression to attenuated renal injury and cell apoptosis both in vivo cisplatin-induced AKI mice and in vitro HK-2 human renal tubular epithelial cells. To knock down p53 by siRNA significantly decreased the miRNA, miR-199a-3p, expression in HK-2 cells. Blockade of miR-199a-3p significantly reduced cisplatin-induced cell apoptosis and inhibited caspase-3 activity. Mechanistically, we identified that miR-199a-3p directly bound to mechanistic target of rapamycin (mTOR) 3'-untranslated region and overexpressed miR-199a-3p reduce the expression and phosphorylation of mTOR. Furthermore, we demonstrated that p53 inhibited mTOR activation through activating miR-199a-3p. In conclusion, our findings reveal that p53, upregulating the expression of miR-199a-3p affects the progress of cisplatin-induced AKI, which might provide a promising therapeutic target of AKI. © 2019 Wiley Periodicals, Inc.

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出版当年[2018]版:
大类 | 3 区 生物
小类 | 3 区 生化与分子生物学 4 区 细胞生物学
最新[2025]版:
大类 | 3 区 生物学
小类 | 4 区 生化与分子生物学 4 区 细胞生物学
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第一作者机构: [1]Department of Nephrology, The Affiliated Jiangmen TCM Hospital of Jinan University, Jiangmen, Guangdong, P. R. China
通讯作者:
通讯机构: [1]Department of Nephrology, The Affiliated Jiangmen TCM Hospital of Jinan University, Jiangmen, Guangdong, P. R. China [*1]Department of Nephrology, The Affiliated Jiangmen TCM Hospital of Jinan University, No. 30 Huayuan East Road, 529000 Jiangmen, Guangdong, P. R. China.
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