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학술저널
저자정보
강경록 (조선대학교) 김재성 (조선대학교) 김태현 (조선대학교) Jeong-Yeon Seo (Chosun University) 박종현 (조선대학교) 임진웅 (조선대학교) 유선경 (조선대학교) 김흥중 (조선대학교) 신상훈 (조선대학교) 박보람 (경운대학교) 김춘성 (조선대학교) 김도경 (조선대학교)
저널정보
대한구강생물학회 International Journal of Oral Biology International Journal of Oral Biology 제45권 제3호
발행연도
2020.1
수록면
107 - 114 (8page)

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Acacetin, which is present in damiana (Turnera diffusa ) and black locust (Robinia pseudoacacia ), has severalpharmacologic activities such as antioxidant, anti-inflammatory, and anti-proliferative effects on cancer cells. However, the effect of acacetin on head and neck cancers has not been clearly established. This study aimedto examine the effects of acacetin on cell growth and apoptosis induction in FaDu human pharyngeal carcinomacells. These were investigated by 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide assay, Live/Deadcell assay, 4′,6-diamidino-2-phenylindole dihydrochloride staining, caspase-3 and caspase-7 activation assay, andimmunoblotting in FaDu cells. Acacetin induced FaDu cell death in a dose-dependent manner, with an estimatedIC50 value of 41.9 μM, without affecting the viability of L-929 mouse fibroblasts as normal cells. Acacetin treatmentresulted in nuclear condensation in the FaDu cells. It promoted the proteolytic cleavage of procaspase-3, -7, -8, and-9 with increasing amounts of the cleaved caspase isoforms in FaDu cells. Acacetin-induced apoptosis in FaDu cellswas mediated by the expression of Fas and activation of caspase-8, caspase-3, and poly (ADP-ribose) polymerase. Immunoblotting showed downregulation of the anti-apoptotic mitochondrial proteins Bcl-2 and Bcl-xL, but upregulationof the mitochondria-dependent pro-apoptotic proteins Bax and Badin FaDu cells after acacetin treatment. Thesefindings indicate that acacetin inhibits cell proliferation and induces apoptotic cell death in FaDu human pharyngealcarcinoma cells via both the death receptor-mediated extrinsic apoptotic pathway and the mitochondria-mediatedintrinsic apoptotic pathway.

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