Inhibition of α-Synuclein contributes to the ameliorative effects of dietary flavonoids luteolin on arsenite-induced apoptotic cell death in the dopaminergic PC12 cells.
Toxicol Mech Methods
; 27(8): 598-608, 2017 Oct.
Article
em En
| MEDLINE
| ID: mdl-28583009
ABSTRACT
Arsenite is a toxic metalloid that may increase the risk of Parkinson's disease by inducing dopaminergic neuronal apoptosis. Luteolin, a common dietary flavonoid, possesses variety of biological functions, but potential effects of luteolin on arsenite toxicity remain elusive. In this study, we demonstrated that luteolin prevented arsenite-induced apoptosis in the dopaminergic PC12 cells. Administration of luteolin to cells attenuated arsenite-induced ROS production, enhanced caspase-3 activity and γ-H2AX expression. Our results further showed the expression of α-Synuclein (α-Syn) was significantly increased in arsenite-treated cells, but co-treatment with luteolin reversed the expression of α-Syn back toward normal level. Inhibition of α-Syn by siRNA remarkably enhanced the beneficial effect of luteolin against arsenite-induced apoptotic cell death. Taken together, these results demonstrate that the ameliorative effects of luteolin against arsenite in the dopaminergic cell may be modulated by α-Syn, and indicating that luteolin may be developed as a chemopreventive supplementary agent to ameliorate dopaminergic cell apoptosis resulting from arsenite exposure.
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Dopamina
/
Apoptose
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Arsenitos
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Luteolina
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Dieta
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Alfa-Sinucleína
Limite:
Animals
Idioma:
En
Ano de publicação:
2017
Tipo de documento:
Article