지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2006.1
- 수록면
- 37 - 46 (10page)
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초록· 키워드
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Objectives : The purpose of this study was to investigate the effect of Dangguibohyultang (DB) and its combination (DB-I; Astragali membraneus BUNGE : Angelica gigas NAKAI=5:1, DB-II; Astragali membraneus BUNGE:Angelica gigas NAKAI=1:1, DB-III; Astragali membraneus BUNGE:Angelica gigas NAKAI=1:5,) on apoptosis in human colorectal adenocarcinoma HCT116 cells. Methods : To study the cytotoxic effect of methanol extract of DB-I, DB-II and DB-III on HCT116 cells, the cell viability was determined by XTT reduction method and ttypan blue exclusion assay. To confirm the induction of apoptosis, the cleavage of poly ADP-ribose polymerase (PARP), a substrate for caspase-3 and a typical sign of apoptosis, and the activation of procaspase-3, -8 and -9 were examined by western blot analysis. Furthermore, DB-induced apoptosis was confirmed by DNA fragmentation. The release of cytochrome C from mitochondria to cytosol, the level of Bcl-2 and Bax, and the expressions of Raf/MEK/ERK were examined by western blot analysis. Results : DB-I and DB-II reduced proliferation of HCT116 cells in a dose-dependent manner. DB-I and DB-II decreased procaspase-3, -8, -9 levels in a dose-dependent manner and induced the clevage of PARP. DB-I and DB-II also triggered the mitochondrial apoptotic signaling by increasing the release of cytochrome C from mitochondria to cytosol, decreasing of anti-apoptotic Bcl-2, and increasing of pro-apoptotic Bax. DB-I and DB-II decreased the activation of Ras/Raf/MEK/ERK cascade in a dose-dependent manner. Conclusion : These results suggest that DB-I and DB-II induce apoptosis via mitochondrial pathway in HCT116 cells. Furthermore, Raf/MEK/ERK cascade is involved in DB-induced apoptosis. These results suggest that DB is potentially useful as a chemotherapeutic agent in human liver cancer.
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