[The cytotoxicity of indirubin derivative PHII-7 against human breast cancer MCF-7 cells and its mechanisms].
Zhongguo Zhong Xi Yi Jie He Za Zhi
; 32(11): 1521-5, 2012 Nov.
Article
en Zh
| MEDLINE
| ID: mdl-23359978
ABSTRACT
OBJECTIVE:
To observe the cytotoxicity of indirubin derivative PHII-7 against human breast cancer MCF-7 cells and to study its primary mechanisms.METHODS:
The proliferation of MCF-7 cells was detected using MTT colorimetry. Annexin V/PI double staining was applied to detect the apoptosis rate of MCF-7 cells. The distribution of cell cycles was detected using PI staining and flow cytometry (FCM). The levels of reactive oxygen species (ROS) in MCF-7 cells were detected by DCFH-DA staining. The mRNA and protein levels of c-fos were detected using RT-PCR and Westem blot analysis.RESULTS:
PHII-7 at different concentrations inhibited the proliferation of MCF-7 cells in a concentration-dependent manner, with the inhibitory rate ranging from 43.13% to 90.90% (P < 0.05). The inhibition was strengthened along with increased concentrations. PHII-7 at different concentrations could induce the apoptosis of MCF-7 cells. The early apoptosis rate was 1.43% +/- 0.02%, 9.14% +/- 0.36%, and 45.79% +/- 8.46%, respectively with the action of 1.25, 2.50, and 5.00 micromol/L PHII-7, respectively, showing dose-dependent manner. FCM analysis found that the proportion of MCF-7 cells in the G0/G1 phase and the S phase decreased after treatment with PHII-7, and the ratio of MCF-7 cells in the G2/M phase obviously increased (P < 0.01). The intra-cellular ROS level was significantly elevated 2 h after pretreatment with PHII-7. The levels of the protooncogene c-fos mRNA and protein were down-regulated in a dose-dependent manner after action of PHII-7.CONCLUSIONS:
PHII-7 exerted obvious in vitro cytotoxic effects on MCF-7 cells. Its mechanisms might be associated with arresting the cell cycle, regulating the redox equilibrium, and down-regulating the expression of the protooncogene.
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Bases de datos:
MEDLINE
Asunto principal:
Ciclo Celular
/
Apoptosis
/
Indoles
Límite:
Female
/
Humans
Idioma:
Zh
Revista:
Zhongguo Zhong Xi Yi Jie He Za Zhi
Asunto de la revista:
TERAPIAS COMPLEMENTARES
Año:
2012
Tipo del documento:
Article