白桦酸
活性氧
细胞凋亡
细胞色素c
线粒体
癌细胞
氧化应激
线粒体ROS
活力测定
生物
细胞培养
化学
细胞生物学
细胞毒性
生物化学
分子生物学
癌症
体外
遗传学
作者
Huamin Zhang,Mei Zhou,Chongtao Ye,Jiahao Qin,Xuan Lu,Chunyan Wang,Xude Wang,Xuejun Jin
标识
DOI:10.1016/j.tiv.2023.105756
摘要
Betulinic acid (BA), a natural pentacyclic triterpene, was extracted from the white birch tree, Triphyophyllum peltatum and the jujube tree. In a variety of human cancer cell lines, this substance displays anticancer properties. In this study, we examined how BA works to inhibit human laryngeal cancer growth. We discovered that BA minimally exhibited cytotoxicity in normal cells (human normal cell line GES-1), while remarkably inhibiting viability of AMC-HN-8, TU212, HEp-2 and M4e cells in a concentration-dependent manner. In AMC-HN-8 cancer cells, BA induced apoptosis, activated caspase-3/9/PARP, significantly reduced mitochondrial membrane potential (MMP), increased the expression of cytochrome C in the cytoplasm, transported Bax to the mitochondria, increased the production of reactive oxygen species (ROS), and the ROS scavenger N-acetylcysteine can reduce apoptosis. All data showed that BA triggered apoptosis via the mitochondrial pathway, in which ROS production was likely involved. The findings support the development of BA as a viable drug for the treatment of human laryngeal carcinoma.
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