Salidroside protects PC12 cells from H2O2-induced apoptosis via suppressing NOX2-ROS-MAPKs signaling pathway
10.3969/j.issn.1673-4254.2017.02.06
- VernacularTitle:红景天苷通过抑制NOX2-ROS-MAPKs信号途径保护H2O2诱导的PC12细胞凋亡
- Author:
Zhilin QI
1
;
Yinhua LIU
;
Shimei QI
;
Liefeng LING
;
Zunyong FENG
;
Qiang LI
Author Information
1. 皖南医学院生物化学教研室
- Keywords:
salidroside;
neuroprotection;
NOX2;
reactive oxygen species;
mitogen-activated protein kinases
- From:
Journal of Southern Medical University
2017;37(2):178-183
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the molecular mechanism by which salidroside protects PC12 cells from H2O2-induced apoptosis.Methods PC12 cells cultured in DMEM supplemented with 10％ horse serum and 5％ fetal bovine serum were pretreated with different doses of salidroside for 2 h and then stimulated with H2O2 for different lengths of time.The expression levels of PARP and caspase 3 and the phosphorylation of p38,ERK and JNK were determined with Western blotting.The cell nuclear morphology was observed after DAPI staining.The production of ROS was detected using a ROS detection kit,and the levels of gp91phox and p47phox in the membrane and cytoplasm were detected by membrane-cytoplasm separation experiment;the binding between gp91phox and p47phox was assayed by coimmunoprecipitation experiment.Results Salidroside dose-dependently suppressed cell apoptosis,lowered phosphorylation levels of p38,ERK and JNK,inhibited the production of ROS,reduced the binding between gp91phox and p47phox,and inhibited the activity of NOX2 in PC12 cells exposed to H2O2.Conclusion Salidroside protects PC12 cells from H2O2-induced apoptosis at least partly by suppressing NOX2-ROS-MAPKs signaling pathway.
