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Zhang H, He Z, Deng P, Lu M, Zhou C, Yang L, Yu Z. PIN1-mediated ROS production is involved in antagonism of N-acetyl-L-cysteine against arsenic-induced hepatotoxicity. Toxicol Res (Camb) 2022; 11:628-643. [PMID: 36051664 PMCID: PMC9424717 DOI: 10.1093/toxres/tfac040] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 06/09/2022] [Accepted: 06/24/2022] [Indexed: 08/26/2023] Open
Abstract
Arsenic, a widely existing environmental contaminant, is recognized to be toxic to multiple organs. Exposure to arsenic results in liver damage via excessive production of reactive oxidative species (ROS). PIN1 regulates the levels of ROS. N-acetyl-L-cysteine (NAC) is an ROS scavenger that protects the hepatic functions. Whether PIN1 plays a regulatory role in NAC-mediated antagonism against arsenic hepatotoxicity remains largely unknown. In our study, the protective effects of NAC against arsenic (NaAsO2)-induced hepatotoxicity were evaluated in vitro and in vivo. Arsenic exposure induced cytotoxicity by increasing the intracellular ROS production, impairing mitochondrial function and inducing apoptosis in L02 hepatocytes. Overexpression of PIN1 markedly protected against arsenic cytotoxicity, decreased ROS levels, and mitigated mitochondrial dysfunction and apoptosis in L02 cells. However, loss of PIN1 further aggravated arsenic-induced cytotoxicity and abolished the protective effects of NAC in L02 cells. An in vivo study showed that pretreatment with NAC rescued arsenic-induced liver injury by restoring liver function and suppressing hepatic oxidative stress. Overexpression of PIN1 in mice transfected with AAV-Pin1 relieved arsenic-induced liver dysfunction and hepatic oxidative stress. Taken together, our study identified PIN1 as a novel intervention target for antagonizing arsenic-induced hepatotoxicity, highlighting a new pharmacological mechanism of NAC targeting PIN1 in antagonism against arsenic toxicity.
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Affiliation(s)
- Huijie Zhang
- Medical College, Guangxi University, 100 University East Road, Xixiangtang District, Nanning, Guangxi, 530004, P. R. China
| | - Zhixin He
- Department of Occupational Health, Third Military Medical University, 30 Gaotanyan Zhengjie, Shapingba District, Chongqing, 400038, P. R. China
| | - Ping Deng
- Department of Occupational Health, Third Military Medical University, 30 Gaotanyan Zhengjie, Shapingba District, Chongqing, 400038, P. R. China
| | - Muxue Lu
- Medical College, Guangxi University, 100 University East Road, Xixiangtang District, Nanning, Guangxi, 530004, P. R. China
| | - Chao Zhou
- Department of Occupational Health, Third Military Medical University, 30 Gaotanyan Zhengjie, Shapingba District, Chongqing, 400038, P. R. China
| | - Lingling Yang
- Department of Occupational Health, Third Military Medical University, 30 Gaotanyan Zhengjie, Shapingba District, Chongqing, 400038, P. R. China
| | - Zhengping Yu
- Medical College, Guangxi University, 100 University East Road, Xixiangtang District, Nanning, Guangxi, 530004, P. R. China
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