Loading...
Please wait, while we are loading the content...
Similar Documents
L-Ascorbic Acid 2-Phosphate Attenuates Methylmercury-Induced Apoptosis by Inhibiting Reactive Oxygen Species Accumulation and DNA Damage in Human SH-SY5Y Cells.
| Content Provider | Europe PMC |
|---|---|
| Author | Zuo, Kuiyang Xu, Qi Wang, Yujie Sui, Yutong Niu, Ye Liu, Zinan Liu, Mingsheng Liu, Xinpeng Liu, Dan Sun, Wei Wang, Ziyu Liu, Xiaomei Liu, Jinyu |
| Editor | Wallace, David R. |
| Copyright Year | 2023 |
| Abstract | Methylmercury (MeHg) is a toxin that causes severe neuronal oxidative damage. As vitamin C is an antioxidant well-known to protect neurons from oxidative damage, our goal was to elucidate its protective mechanism against MeHg-induced oxidative stress in human neuroblastomas (SHSY5Y). We treated cells with MeHg, L-ascorbic acid 2-phosphate (AA2P), or both, and used MTT, flow cytometry, and Western blot analyses to assess cell damage. We found that MeHg significantly decreased the survival rate of SH-SY5Y cells in a time- and dose-dependent manner, increased apoptosis, downregulated PAR and PARP1 expression, and upregulated AIF, Cyto C, and cleaved Caspase-3 expression. A time course study showed that MeHg increased reactive oxygen species (ROS) accumulation; enhanced apoptosis; increased DNA damage; upregulated expression ofγH2A.X, KU70, 67 and 57 kDa AIF, CytoC, and cleaved Caspase-3; and downregulated expression of 116 kDa PARP1, PAR, BRAC1, and Rad51. Supplementation with AA2P significantly increased cell viability and decreased intrinsic ROS accumulation. It also reduced ROS accumulation in cells treated with MeHg and decreased MeHg-induced apoptosis. Furthermore, AA2P conversely regulated gene expression compared to MeHg. Collectively, we demonstrate that AA2P attenuates MeHg-induced apoptosis by alleviating ROS-mediated DNA damage and is a potential treatment for MeHg neurotoxicity. |
| Journal | Toxics |
| Volume Number | 11 |
| PubMed Central reference number | PMC9967424 |
| Issue Number | 2 |
| PubMed reference number | 36851019 |
| e-ISSN | 23056304 |
| DOI | 10.3390/toxics11020144 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2023-02-02 |
| Access Restriction | Open |
| Rights License | Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). © 2023 by the authors. |
| Subject Keyword | methylmercury reactive oxygen species DNA damage DNA repair apoptosis AA2P vitamin C |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemical Health and Safety Health, Toxicology and Mutagenesis Toxicology |