Apocynin Attenuates Cobalt Chloride-Induced Pheochromocytoma Cell Apoptosis by Inhibiting P38-MAPK/Caspase-3 Pathway

Cellular Physiology and Biochemistry

Jie  Liu¹ 

关键词: Apocynin;    NADPH oxidase;    Cobalt chloride;    Pheochromocytoma cell;    p38-MAPK;    Caspase-3;    Apoptosis;   

DOI  :  10.1159/000491720

学科分类：分子生物学，细胞生物学和基因

来源: S Karger AG

【 摘 要 】

Background/Aims Apocynin, a nicotinamide adenine dinucleotide phosphate (NADPH) oxidase inhibitor, has been identified as a potential neuroprotectant. In this study, we aimed to investigate the protective effect of apocynin against cobalt chloride (CoCl2)-induced pheochromocytoma (PC12) cell apoptosis. Methods The PC12 cell culture was pretreated with apocynin and/or SB203580 (p38 mitogen-activated protein kinase [p38-MAPK] inhibitor) at different time points prior to CoCl2 incubation. The cell viability, apoptosis rate, DAN damage, and antioxidant activity were detected using cell counting kit-8 (CCK-8), flow cytometry, enzyme-linked immunosorbent assay (ELISA), and comet assay respectively. The protein and mRNA expressions of p38-MAPK and caspase-3 in the cells were measured by qRT-PCR and Western blotting. Results Apocynin inhibited CoCl2-mediated apoptosis, reduced oxidative stress, and down-regulated the expression of p38-MAPK and caspase-3. Conclusions Our findings show that apocynin attenuated CoCl2-induced apoptosis by potently restraining p38-MAPK-caspase-3 signaling pathway in PC12 cells, suggesting that apocynin may be a potent prophylactic reagent against CoCl2-mediated PC12 cell apoptosis.

【 授权许可】

CC BY-NC-ND