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자료유형
학술저널
저자정보
Lee, Young-Joo (College of Engineering, Institute of Biotechnology, Department of Bioscience and Biotechnology, Sejong University) Jin, Young-Ran (College of Pharmacy, Seoul National University) Lim, Won-Chung (College of Engineering, Institute of Biotechnology, Department of Bioscience and Biotechnology, Sejong University) Park, Wan-Kyu (College of Engineering, Institute of Biotechnology, Department of Bioscience and Biotechnology, Sejong University) Cho, Jung-Yoon (College of Engineering, Institute of Biotechnology, Department of Bioscience and Biotechnology, Sejong University) Jang, Si-Youl (College of Engineering, Kookmin University) Lee, Seung-Ki (College of Pharmacy, Seoul National University)
저널정보
대한약학회 Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea 제26권 제1호
발행연도
2003.1
수록면
58 - 63 (6page)

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Ginseng has been recommended to alleviate the menopausal symptoms, which indicates that components of ginseng very likely contain estrogenic activity. We have examined the possibility that a component of Panax ginseng, $ginsenoside-R_{b1}$ acts by binding to estrogen receptor. We have investigated the estrogenic activity of $ginsenoside-R_{b1}$ in a transient transfection system using estrogen-responsive luciferase plasmids in MCF-7 cells. $ginsenoside-R_{b1}$ activated the transcription of the estrogen-responsive luciferase reporter gene in MCF-7 breast cancer cells at a concentration of 50 $\mu$M. Activation was inhibited by the specific estrogen receptor antagonist ICI 182,780, indicating that the estrogenic effect of $ginsenoside-R_{b1}$ is estrogen receptor dependent. Next, we evaluated the ability of $ginsenoside-R_{b1}$ to induce the estrogen-responsive gene c-fos by semi-quantitative RT-PCR assays and Western analyses. $ginsenoside-R_{b1}$ increased c-fos both at mRNA and protein levels. However, $ginsenoside-R_{b1}$ failed to activate the glucocorticoid receptor, the retinoic acid receptor, or the androgen receptor in CV-1 cells transiently transfected with the corresponding steroid hormone receptors and hormone responsive reporter plasmids. These data support our hypothesis that $ginsenoside-R_{b1}$ acts a weak phytoestrogen, presumably by binding and activating the estrogen receptor.

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