首页> 美国卫生研究院文献>Toxicology Reports >Inhibitory effect of Camellia sinensis Ilex paraguariensis and Ardisia compressa tea extracts on the proliferation of human head and neck squamous carcinoma cells
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Inhibitory effect of Camellia sinensis Ilex paraguariensis and Ardisia compressa tea extracts on the proliferation of human head and neck squamous carcinoma cells

机译:茶花巴拉圭冬青和茶渣茶提取物对人头颈部鳞状细胞癌细胞增殖的抑制作用

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摘要

In vitro cell proliferation, cell cycle arrest and induction of apoptosis were investigated, using three human head and neck squamous cell carcinoma (HNSCC) cell lines (OSCC-3, SCC-61, and SQ-20B). Aqueous extracts of Camellia sinensis, Ilex paraguariensis, and Ardisia compressa were tested and (−) epigallocatechin-3-gallate (EGCG) was used for comparison. For EGCG the IC50 values were between 80 and 166 μM and for the extracts among 75 and 505 μM eq. (+) catechin, with C. sinensis demonstrating dominant cytotoxicity. There was not a correlation between antioxidant capacity and cytotoxicity. Flow cytometry analysis revealed similarities in response for EGCG and C. sinensis. The A. compressa extract altered DNA distribution (P < 0.05) and was the most effective in induction of apoptosis via caspases (P < 0.05). Not all HNSCC cells tested responded to the same preventive agents. The fact that A. compressa inhibits HNSCC cell proliferation makes this aqueous extract a potential source of chemopreventive agents.
机译:使用三种人类头颈部鳞状细胞癌(HNSCC)细胞系(OSCC-3,SCC-61和SQ-20B)研究了体外细胞增殖,细胞周期停滞和凋亡诱导。测试了茶花,冬至冬青和紫草的水提取物,并使用(-)表没食子儿茶素-3-没食子酸酯(EGCG)进行比较。 EGCG的IC50值在80至166μM之间,提取物的IC50值在75至505μM当量之间。 (+)儿茶素,与中华梭状芽胞杆菌显示主要的细胞毒性。抗氧化剂能力和细胞毒性之间没有关联。流式细胞仪分析显示,EGCG和中华绒螯蟹的反应相似。压缩曲霉提取物改变了DNA分布(P <0.05),是最有效的通过胱天蛋白酶诱导细胞凋亡的方法(P <0.05)。并非所有测试的HNSCC细胞对相同的预防剂都有反应。压缩曲霉抑制HNSCC细胞增殖的事实使得该水提取物成为化学预防剂的潜在来源。

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