癌变·畸变·突变 ›› 2006, Vol. 18 ›› Issue (4): 281-283.doi: 10.3969/j.issn.1004-616x.2006.04.007

• 论著 • 上一篇    下一篇

不同分化期乳腺癌细胞PKCs的表达及其对TNFα的敏感性

苏湘鄂;聂晓云   

  1. 深圳大学生命科学学院,广东 深圳 518060
  • 收稿日期:2005-12-30 修回日期:2006-03-06 出版日期:2006-07-30 发布日期:2006-07-30
  • 通讯作者: 苏湘鄂

Expression of PKC Isoforms in Breast Cancer Cell Lines at Differentiation Stage and Their Sensitivity to TNFα

SU Xiang-e, NIE Xiao-yun   

  1. College of Life Science,Shenzhen University, Shenzhen 518060 Guangdong,China
  • Received:2005-12-30 Revised:2006-03-06 Online:2006-07-30 Published:2006-07-30
  • Contact: SU Xiang-e

摘要: 背景与目的: 乳腺癌是女性中最常见的恶性肿瘤之一,从分子水平上探讨乳腺癌的发生发展规律是当前的研究热点之一。本文研究了不同分化期乳腺癌细胞中5种蛋白激酶C (PKC) 亚型的表达及细胞对TNFα的敏感性。 材料与方法: 采用蛋白免疫学方法、四氮唑蓝(MTT)比色分析法检测了12种不同期乳腺癌细胞的PKCα、ε、η、δ、μ的表达和细胞对TNFα的敏感性。 结果: 表明PKCε在III、IV期细胞中表达较I、II期高,PKCα、η、δ、μ与癌细胞分期无相关性;IV期癌细胞对TNFα的IC50最高,最不敏感。 结论: PKCε在乳腺癌晚期细胞中表达较高,IV期癌细胞对TNFα最不敏感,PKCε有可能作为评价临床乳腺癌分化程度的指标之一。

关键词: 蛋白激酶C, 乳腺癌细胞, 肿瘤坏死因子

Abstract: BACKGROUND & AIM: To study protein kinase C(PKC) expression in breast cancer cells at differentiation stage and their sensitivity to TNFα. MATERIALS AND METHODS: Protein immunoblot and MTT analysis were used to determine the expression profile of PKC isoforms in 12 breast cancer cell lines in various differentiation stages. RESULTS: The results suggested that expression of PKCε increased in stagesⅢ & Ⅳ cell lines differentiations, compared to those in stages I and II. There was no association between differentiation stage of breast cancer cells and expression of PKCα、η、δ and μ. IC50 of breast cancer cell lines to TNFα at stage IV was higher than cells at other stages. CONCLUSION: PKCε might be useful markers to evaluate the differentiation in human breast carcinoma.

Key words: protein kinase C, breast cancer cell, TNFα

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