Hyperoside protects mouse spermatocytes GC-2 cells from oxidative damage by activating the Keap1/Nrf2/HO-1 pathway.
10.12122/j.issn.1673-4254.2022.05.07
- Author:
Yan Yan ZHU
1
;
Tong Sheng WANG
1
;
Ning DAI
2
;
Meng Yun DENG
1
;
Hong Juan LIU
1
;
Xiao Hui TONG
1
;
Li LI
1
Author Information
1. Department of Pharmacology, College of Integrated Chinese and Western Medicine, Anhui University of Chinese Medicine, Hefei 230012, China.
2. Department of Andrology, First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei 230601, China.
- Publication Type:Journal Article
- Keywords:
GC-2 cells;
HO-1;
Keap1;
Nrf2;
hyperoside;
oxidative stress
- MeSH:
Animals;
Antioxidants/metabolism*;
Heme Oxygenase-1/metabolism*;
Hydrogen Peroxide/pharmacology*;
Kelch-Like ECH-Associated Protein 1/metabolism*;
Male;
Mice;
NF-E2-Related Factor 2/metabolism*;
Oxidative Stress;
Quercetin/analogs & derivatives*;
RNA, Messenger/metabolism*;
Spermatocytes/metabolism*;
Superoxide Dismutase/metabolism*
- From:
Journal of Southern Medical University
2022;42(5):673-680
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE:To study the protective effect of hyperoside (Hyp) against ydrogen peroxide (H2O2)- induced oxidative damage in mouse spermatocytes GC-2 cells and explore the role of the Keap1/Nrf2/HO-1 pathway in this protective mechanism.
METHODS:GC-2 cells were treated with 2.5 mmol/L azaacetylcysteine (NAC), 50, 100, and 200 μmol/L hyperoside, or the culture medium for 48 h before exposure to H2O2 (150 μmol/L) for 2 h. CCK-8 assay was used to detect the changes in cell viability, and cell apoptosis was analyzed using flow cytometry. Enzyme-linked immunosorbent assay (ELISA) was used to detect the levels of superoxide dismutase (SOD), glutathione peroxidase (GSH-PX), catalase (CAT) activity and malondialdehyde (MDA) in the culture medium. Western blotting and RT-qPCR were used to detect the protein and mRNA expression levels of nuclear factor erythroid 2-related factor2 (Nrf2), Kelch-like ECH-associated protein 1 (Keap1), and heme oxygenase-1 (HO-1); the nuclear translocation of Nrf2 was detected using immunofluorescence assay.
RESULTS:Exposure to H2O2 significantly lowered the proliferation rate, reduced the activities of SOD, GSH and CAT, and obviously increased MDA content, cell apoptosis rate, and the expressions of Keap1 and Nrf2 mRNA and Keap1 protein in GC-2 cells (P < 0.05 or 0.01). Treatment of the cells prior to H2O2 exposure with either NAC or 200 μmol/L hyperoside significantly increased the cell proliferation rate, enhanced the activities of SOD, GSH-PX and CAT, and lowered MDA content and cell apoptosis rate (P < 0.05). Treatment with 200 μmol/L hyperoside significantly decreased the mRNA and protein expressions of Keap1 and increased the expressions of HO-1 mRNA and the protein expressions of Nrf2 and HO-1 (P < 0.05 or 0.01). Hyperoside also caused obvious nuclear translocation of Nrf2 in the cells (P < 0.05).
CONCLUSION:Hyperoside protects GC-2 cells against H2O2- induced oxidative damage possibly by activation of the Keap1/Nrf2/HO-1 signaling pathway.
