Journal of the Korean Society of Food Science and Nutrition (한국식품영양과학회지)

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Effect of [6]-Gingerol on Bcl-2 and Bax Expression in MDA-MB-231 Human Breast Cancer Cell Line

[6]-Gingerol이 인체 유방암세포 MDA-MB-231에서 Bcl-2와 Bax 발현에 미치는 영향

  • 서은영 (단국대학교 자연과학부 식품영양학) ;
  • 김우경 (단국대학교 자연과학부 식품영양학)
  • Published : 2006.07.31
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Abstract

We investigated the effect of gingerol (Zingiber officinale Roscoe, Zingiberaceae) on Bcl-2 and Bax expression in MDA-MB-231 human breast cell lines. The oleoresin from rhizomes of ginger contains [6]-gingerol (1-[4'-hydroxy-3'-methoxyphenyl]-5-hydroxy-3-decanone). We previously reported that [6]-gingerol inhibits cell proliferation in MDA-MB-231 human breast cancer cell lines. In this study, we examined protein and mRNA expression associated with cell apoptosis in MDA-MB-231 human breast cancer cell lines. We cultured MDA-MB-231 cells in presence of various concentrations 0, 2.5, 5 and $10\;{\mu}M$ of [6]-gingerol. Bcl-2 protein and its mRNA levels were decreased dose-dependently in cells treated with [6]-gingerol, but Bax protein and its mRNA levels were unchanged by [6]-gingerol treatment. Bcl-2/Bax ratio was decreased in a dose dependent manner treated with [6]-gingerol. Caspase-3 activity was significantly increased dose-dependently in cell treated with [6]-gingerol (p<0.05). In conclusion, we have shown that [6]-gingerol induces apoptosis in MDA-MB-231 human breast cancer cell lines.

본 연구는 생강의 대표적인 비휘발성 매운맛 성분인 [6]-gingerol이 인체 유방암세포 MDA-MB-231에서 세포사멸에 미치는 영향을 살펴보았으며 그 결과는 다음과 같다. 세포사멸을 억제하는 단백질인 Bcl-2의 발현은 [6]-gingerol의 농도가 증가할수록 발현이 감소되었으며, mRNA 수준에서도 같은 양상을 보였다. 세포사멸을 유도하는 Bax의 단백질 발현은 [6]-gingerol의 농도가 증가되어도 유의적인 차이는 나타나지 않았으며 mRNA 수준에도 별 영향을 미치지 않았다. 그러나 세포사멸의 지표로 사용되는 Bcl-2/Bax의 비율은 [6]-gingerol의 농도가 증가할수록 감소를 보였다. 그리고 [6]-gingerol의 농도가 증가할수록 caspase-3의 활성이 증가하였다. 이상의 결과들로 볼 때, 인체 유방암 세포인 MDA-MB-231에서 [6]-gingerol은 암세포의 증식을 억제하고, 세포사멸을 유도하는 효과가 있는 것으로 사료된다.

Keywords

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