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- Title
Protective effect of Bu-7, a flavonoid extracted from Clausena lansium, against rotenone injury in PC12 cells.
- Authors
Li, Bo-yu; Yuan, Yu-he; Hu, Jin-feng; Zhao, Qing; Zhang, Dong-ming; Chen, Nai-hong
- Abstract
Aim:To investigate the protective effect and underlying mechanisms of Bu-7, a flavonoid isolated from the leaves of Clausena lansium, against rotenone-induced injury in PC12 cells.Methods:The cell viability was evaluated using MTT assay. The cell apoptosis rate was analyzed using flow cytometry. JC-1 staining was used to detect the mitochondrial membrane potential (MMP). Western blotting analysis was used to determine the phosphorylation of c-Jun N-terminal kinase (JNK), p38 mitogen-activated protein kinase (p38), tumor protein 53 (p53), Bcl-2-associated X protein (Bax), B-cell lymphoma 2 (Bcl-2), and caspase 3.Results:Treatment of PC12 cells with rotenone (1-20 μmol/L) significantly reduced the cell viability in a concentration-dependent manner. Pretreatment with Bu-7 (0.1 and 10 μmol/L) prevented PC12 cells from rotenone injury, whereas Bu-7 (1 μmol/L) had no significant effect. Pretreatment with Bu-7 (0.1 and 10 μmol/L) decreased rotenone-induced apoptosis, attenuated rotenone-induced mitochondrial potential reduction and suppressed rotenone-induced protein phosphorylation and expression, whereas Bu-7 (1 μmol/L) did not cause similar effects. Bu-7 showed inverted bell-shaped dose-response relationship in all the effects.Conclusion:Bu-7 protects PC12 cells against rotenone injury, which may be attributed to MAP kinase cascade (JNK and p38) signaling pathway. Thus, Bu-7 may be a potential bioactive compound for the treatment of Parkinson's disease.
- Subjects
FLAVONOIDS; ROTENONE; APOPTOSIS; FLOW cytometry; MITOCHONDRIAL membranes; WESTERN immunoblotting; PHOSPHORYLATION; PARKINSON'S disease treatment
- Publication
Acta Pharmacologica Sinica, 2011, Vol 32, Issue 11, p1321
- ISSN
1671-4083
- Publication type
Article
- DOI
10.1038/aps.2011.119