生物技术通报 ›› 2017, Vol. 33 ›› Issue (8): 199-205.doi: 10.13560/j.cnki.biotech.bull.1985.2017-0122

• 研究报告 • 上一篇    下一篇

两种天然产物对B16F10细胞增殖及黑色素合成抑制机理研究

程杏安1, 张淑明1, 周晓武1, 吴波1, 林贤伟1, 秦湘静2 , 黄素青1, 刘展眉1, 蒋旭红1   

  1. 1. 仲恺农业工程学院天然产物化学研究所,广州 510225;
    2. 中国科学院南海海洋研究所,广州 510301
  • 收稿日期:2017-02-22 出版日期:2017-08-01 发布日期:2017-08-01
  • 作者简介:程杏安,男,博士,副教授,研究方向:天然产物化学;E-mail:anzai_28@163.com
  • 基金资助:
    国家自然科学基金项目(21406274,21376281),广东省大学生创新训练项目(201411347034,201511347056)

Study on Inhibition Mechanism of Melanogenesis and Melanin Synthesis of B16F10 Cell Induced by Two Natural Products

CHENG Xing-an1, ZHANG Shu-ming1, ZHOU Xiao-wu1, WU Bo1, LIN Xian-wei1, QIN Xiang-jing2, HUANG Su-qing1, LIU Zhan-mei1, JIANG Xu-hong1   

  1. 1. Institute of Natural Product Chemistry,Zhongkai University of Agriculture and Engineering,Guangzhou 510225;
    2. South China Sea Institute of Oceanology,Chinese Academy of Sciences,Guangzhou 510301
  • Received:2017-02-22 Published:2017-08-01 Online:2017-08-01

摘要: 旨在研究10-羟基喜树碱(10-hydroxycamptothecin,HCPT)和白藜芦醇(Resveratrol,Res)对体外培养的小鼠恶性黑色素瘤B16F10细胞的增殖及黑色素合成抑制机理。利用MTT法、显微观察、L-Dopa氧化法、NaOH裂解法分析不同浓度HCPT和Res对细胞增殖、细胞形态、酪氨酸酶活性及黑色素合成含量的影响。荧光半定量PCR方法(Semi-RT-PCR)分析该化合物对黑色素合成关键因子酪氨酸酶(TYR)和小眼相关转录因子(MITF)基因表达的影响。结果表明HCPT(40、80、120、160和200 μmol/L)和Res(80、120、160和200 μmol/L)能够通过诱导细胞凋亡抑制B16F10细胞的增殖,同时对酪氨酸酶活性和细胞黑色素生成具有明显抑制作用(P<0.05),且呈现浓度依赖性。另外,不同浓度的HCPT以及高浓度Res(120和160 μmol/L)能够显著下调B16F10细胞TYRMITF基因的mRNA水平。HCPT和Res可能通过诱导细胞凋亡抑制B16F10细胞的增殖,同时通过下调MITF基因转录,抑制TYR mRNA的表达及TYR酶活性,进而抑制细胞黑色素的生成。

关键词: 10-羟基喜树碱, 白藜芦醇, 酪氨酸酶, 黑色素, 小眼相关转录因子

Abstract: This study aims to clarify the inhibition mechanism of proliferation and melanin synthesis of B16F10 cell induced by 10-hydroxycamptothecin(HCPT)and resveratrol(Res). MTT cytotoxicity assay,microscope observation-assay,L-Dopa oxidation-assay and NaOH cracking-assay were employed to investigate the proliferation,cellular morphology,tyrosinase(TYR)activity and melanin synthesis of B16F10 cells treated by HCPT and Res at different concentrations,respectively;and semi-RT-PCR to analyze the relative mRNA expression of TYR and microphthalmia associated transcription factor(MITF)in B16F10 cells. It was found that HCPT(40,80,120,160,and 200 μmol/L)and Res(80,120,160,and 200 μmol/L)inhibited B16F10 cell proliferation through inducing apoptosis,and exhibited significantly dose-dependent inhibiting effects on tyrosinase activity and melanin synthesis on B16F10 cell(P < 0.05). In addition,relative mRNA expressions of the TYR and MITF genes in B16F10 cells were depressed remarkably by HCPT at different concentrations and Res at high concentrations(120 and 160 μmol/L). Conclusively,HCPT and Res may inhibit the B16F10 cell proliferation via inducing cell apoptosis,and depress the melanin synthesis in B16F10 cells from down-regulating the transcription of MITF gene and subsequently inhibiting the gene expression of TYR mRNA and activity of TYR.

Key words: 10-hydroxycamptothecin, resveratrol, tyrosinase, melanin, microphthalmia associated transcription factor