[Jaridonin, a new diterpenoid from Isodon rubescens, induces cell cycle arrest in gastric cancer cells through activating ataxia telangiectasia mutated kinase].
Zhonghua Zhong Liu Za Zhi
; 38(4): 258-62, 2016 Apr.
Article
em Zh
| MEDLINE
| ID: mdl-27087371
ABSTRACT
OBJECTIVE:
To study the effects of Jaridonin, a novel diterpenoid from isodon rubescens, on the cell cycle of human gastric cancer cells and its molecular mechanism of action.METHODS:
Flow cytometry was used to analyze the cell cycle distribution and expression of ataxia telangiectasia mutated kinase (ATM) after Jaridonin treatment. Western blot was performed to detect the expression of cell cycle-related proteins.RESULTS:
The results of flow cytometry showed that the percentages of MGC-803 cells in G(2)/M phase at 6 hours after 0, 10, 20 µmol/L Jaridonin-treatment were (10.8±2.2)%, (18.2±2.5)%, (27.3±3.2)%, respectively; those at 12 hours after Jaridonin-treatment were (12.0±1.5)%, (24.1±2.0)% and (39.7±5.2)%, respectively, indicating a G2/M phase arrest of MGC-803 cells was resulted in a time- and dose-dependent manner. The expressions of ATM, Chk1, Chk2, phosphorylated Cdc2 and CDK2 were up-regulated in the MGC-803 cells after Jaridonin treatment, while the levels of Cdc2 and CDK2 were decreased. KU-55933, an inhibitor of ATM, reversed the expression of relevant proteins and G(2)/M phase arrest induced by Jaridonin.CONCLUSIONS:
Jaridonin can significantly induce G(2)/M arrest in gastric cancer MGC-803 cells. Its mechanism may be related to the activation of ATM and Chk1/2, and inactivation of Cdc2 and CDK2 phosphorylation.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Neoplasias Gástricas
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Ciclo Celular
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Proteínas de Ciclo Celular
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Isodon
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Diterpenos do Tipo Caurano
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Proteínas Mutadas de Ataxia Telangiectasia
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Proteínas de Neoplasias
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Antineoplásicos Fitogênicos
Limite:
Humans
Idioma:
Zh
Revista:
Zhonghua Zhong Liu Za Zhi
Ano de publicação:
2016
Tipo de documento:
Article
País de afiliação:
China