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茶叶科学 ›› 2006, Vol. 26 ›› Issue (3): 219-224.doi: 10.13305/j.cnki.jts.2006.03.013

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EGCG与锌离子互作对前列腺癌细胞PC-3生长的影响

陈勋1, 于海宁2, 沈生荣1   

  1. 1. 浙江大学茶叶研究所, 浙江 杭州 310029;
    2. 浙江工业大学药学院,浙江 杭州 310032
  • 收稿日期:2006-01-19 修回日期:2006-05-27 出版日期:2006-09-25 发布日期:2019-09-11
  • 作者简介:陈勋(1979-),男,湖北武穴人,硕士研究生,主要从事茶叶生物化学与综合利用方面的研究。
  • 基金资助:
    国家自然科学基金(30470198)和博士后基金资助项目(2004036486)

Effect of Interactions Between EGCG and Zn2+ on the Growth of Prostate Cancer PC-3 Cells

CHEN Xun1, YU Hai-ning2, SHEN Sheng-rong1   

  1. 1. Institute of Tea Sciences, Zhejiang University, Hangzhou 310029, China;
    2. College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310032, China
  • Received:2006-01-19 Revised:2006-05-27 Online:2006-09-25 Published:2019-09-11

摘要: 本文采用MTT法研究了EGCG以及EGCG与锌离子相互作用对前列腺癌细胞PC-3生长的影响;采用原子吸收光谱法(AAS)研究了锌离子及EGCG共存对PC-3细胞锌、镉离子吸收的影响;利用HPLC测定了锌离子对EGCG在PBS缓冲液与正辛醇,水与正辛醇体系中分配系数的影响。结果表明,EGCG能抑制前列腺癌细胞生长,细胞存活率呈时间和剂量依赖性;锌离子能抑制PC-3细胞的生长,促进EGCG对PC-3细胞生长的抑制作用,呈时间和剂量依赖性;同时,锌离子能抑制PC-3细胞对镉离子的吸收,而EGCG有增强效应。

关键词: 儿茶素, Zn2+, Cd2+, PC-3细胞

Abstract: In the present paper, effects of EGCG and interactions of EGCG with Zn2+on the growth of androgen-insensitive human prostate cancer cells (PC-3) were investigated by MTT assay. Effects of EGCG and Zn2+ on absorption of zinc and cadmium in PC-3 cells were detected by Flame Atomic Absorption Spectrometry (AAS) assay; and also the changes of Zn2+ on the partition coefficients of EGCG in n-octanol/PBS or n-octanol / water system were determined by HPLC technique. EGCG was screened for growth inhibition of PC-3 cells in dose- and time-dependent manners. Both Zn 2+ and EGCG decreased viability of PC-3 cells in dose- and time-dependent relations, and Zn2+ ameliorated the effect of EGCG on the growth of PC-3 cells. Also, Zn2+ decreased the absorption of PC-3 cells on Cd2+, and EGCG could enhance the effect as well.

Key words: catechins, Zn2+, Cd2+, PC-3 cells

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