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茶叶科学 ›› 2014, Vol. 34 ›› Issue (5): 465-472.doi: 10.13305/j.cnki.jts.2014.05.007

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茶叶提取物对B16小鼠黑色素瘤细胞的生物学效应及机理研究

陈贞纯1, 贾玲燕1, 毛祖法2, 金恩惠1, 王广伟3, 屠幼英1,*   

  1. 1. 浙江大学农学院茶学系,浙江 杭州 310058;
    2. 浙江省农业厅经济作物管理局,浙江 杭州310029;
    3. 飞利浦(中国)投资有限公司,上海 200233
  • 收稿日期:2014-01-14 修回日期:2014-04-14 发布日期:2019-09-03
  • 通讯作者: *youytu@zju.edu.cn
  • 作者简介:陈贞纯(1989— ),女,浙江平阳人,硕士,主要从事茶叶生物化学及综合利用研究。
  • 基金资助:
    浙江省十县五十万亩茶产业升级转化工程(N20120655)、浙江省科技厅重大科技专项计划项目(2013C02024-4)

Bio-efficacy of Tea Extract on Mouse B16 Melanoma Cell in Vitro and Its Mechanism

CHEN Zhenchun1, JIA Lingyan1, MAO Zufa2, KIM Eunhye1, WANG Guangwei3, TU Youying1,*   

  1. 1. Department of Tea Science, Zhejiang University, Hangzhou 310058, China;
    2. Department of Agriculture, Zhejiang Provincial People's Government, Hangzhou 310029, China;
    3. Philips (investment) Limited Company, Shanghai 200233, China
  • Received:2014-01-14 Revised:2014-04-14 Published:2019-09-03

摘要: 研究了茶叶提取物对体外培养的B16小鼠黑色素瘤细胞的生物学效应,并对其机理进行初步探讨。分别用茶黄素单体(TF1)、EGCG、纯度为40%的茶黄素(TF40)处理细胞,然后观察细胞形态,并以溴化二苯四偶氮法(MTT法)测定受试物对黑色素细胞活力的影响,以左旋多巴为底物测定细胞内酪氨酸酶活性,采用比色法测定细胞中的黑色素含量。实验结果表明,各化合物对B16黑色素瘤细胞形态有不同程度的影响,对细胞活性、酪氨酸酶浓度和黑色素合成量有浓度依赖性抑制作用。这3种茶提取物能通过多种途径抑制黑色素合成,从而达到美白的效果,且茶叶提取物的效果优于Vc。

关键词: 茶叶提取物, B16黑色素瘤细胞, 黑色素, 酪氨酸酶, 机理

Abstract: The Bio-efficacy and mechanism of tea extract on mouse B16 melanoma cell in vitro were studied in this paper. Cells were treated with different concentration of TF1, EGCG and TF40, then the cell morphology was observed. The tyrosinase activity was determined by MTT method. The synthesis of melanin was determined using DOPA as substrate, and proliferation rate of B16 cells was determined by colorimetry, then analyzing the effects of drugs to these indexes. The results showed that the cell morphology was changed by the treatment of drugs. The tyrosinase activity, the synthesis of melanin and proliferation rate of B16 cells were all negatively related to the drugs concentration. Tea extracts and Vc can cause the inhibition of the synthesis of melanin, and resulted to white skin. The whiting effect of tea extracts is better than that of Vc.

Key words: tea extract, B16 melanoma cell, melanin, tyrosinase, mechanism

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