PMID: 17048572Oct 20, 2006

Estrogenicity of adzuki bean Phaseolus angularis wight. and its effect on proesterone receptor level in human breast cancer MCF-7 cells

Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica
Xing-guo Zhang, Qing-Wei Zhao


To explore the estrogenic activity of ethanol extract from adzuki bean Phaseolus angularis and its effect on progesterone receptor (PR) level of human breast cancer MCF-7 cells. The modified MCF-7 cell proliferation assay was used to evaluate the estrogenic activity of adzuki bean extract. And its effect on PR mRNA and protein were addressed using RT-PCR measurements and western blotting analysis respectively in which pure estrogen receptor antagonist ICI 182,780 was employed as the tool. The estrogenic activity of adzuki bean extract at various concentrations (10-200 microg x mL(-1)), expressed as proliferative effect (PE) relative to that of solvent control, was examined. The results indicated that the extract of adzuki bean was able to induce MCF-7 cell growth with a maximum at 100 microg x mL(-1). The results of RT-PCR and western blotting showed that PR mRNA and protein could be significantly induced by adzuki bean extract in MCF-7 cells. Moreover, the specific estrogen receptor antagonist ICI 182,780 could block these reactions. Ethanol extract of adzuki bean has the estrogen-like activities through the estrogen response pathway.

Related Concepts

Mammary Neoplasms, Human
Plant Extracts, Chinese
Estradiol, (16 alpha,17 beta)-Isomer
Estrogen Antagonists
Pharmaceutical Plants
Receptors, Progesterone
Poly(A) Tail
Phaseolus acutifolius
Cell Line, Tumor