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Abstract Title:

Folic Acid Protected Neural Cells Against Aluminum-Maltolate-Induced Apoptosis by Preventing miR-19 Downregulation.

Abstract Source:

Neurochem Res. 2016 Apr 25. Epub 2016 Apr 25. PMID: 27113042

Abstract Author(s):

Mingming Zhu, Bingfei Li, Xiao Ma, Cong Huang, Rui Wu, Weiwei Zhu, Xiaoting Li, Zhaofeng Liang, Feifei Deng, Jianyun Zhu, Wei Xie, Xue Yang, Ye Jiang, Shijia Wang, Jieshu Wu, Shanshan Geng, Chunfeng Xie, Caiyun Zhong, Haiyan Liu

Article Affiliation:

Mingming Zhu

Abstract:

Aluminum (Al)-induced apoptosis is considered as the major cause of its neurotoxicity. Folic acid possesses neuroprotective function by preventing neural cell apoptosis. microRNAs (miRNAs) are important regulators of gene expression participating in cellular processes. As a key component of the miR-17-92 cluster, miR-19 is implicated in regulating apoptotic process, while its role in the neuroprotective effect of folic acid has not been investigated. The present study aimed to investigate the potential involvement and function of miR-19 in the protective action of folic acid against Al-induced neural cell apoptosis. Human SH-SY5Y cells were treated with Al-maltolate (Al-malt) in the presence or absence of folic acid. Results showed that Al-malt-induced apoptosis of SH-SY5Y cells was effectively prevented by folic acid. Al-malt suppressed the expression of miR-19a/19b, along with alterations of miR-19 related apoptotic proteins including PTEN, p-AKT, p53, Bax, Bcl-2, caspase 9 and caspase 3; and these effects were ameliorated by folic acid. miR-19 inhibitor alone induced apoptosis of SH-SY5Y cells. Combination treatment of folic acid and miR-19 inhibitor diminished the neuroprotective effect of folic acid. These findings demonstrated that folic acid protected neuronal cells against Al-malt-induced apoptosis by preventing the downregulation of miR-19 and modulation of miR-19 related downstream PTEN/AKT/p53 pathway.

Study Type : In Vitro Study

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Sayer Ji
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