中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (20): 3202-3207.doi: 10.3969/j.issn.2095-4344.2017.20.015

• 组织构建与生物活性因子 tissue construction and bioactive factors • 上一篇    下一篇

乳腺癌基质成纤维细胞内Caveolin-1蛋白对表皮生长因子的影响

肖  亮,王  莹,杨小军,杨军平   

  1. 江西中医药大学附属医院检验科,江西省南昌市  330006
  • 修回日期:2017-02-13 出版日期:2017-07-18 发布日期:2017-07-28
  • 通讯作者: 杨军平,副教授,江西中医药大学附属医院检验科,江西省南昌市 330006
  • 作者简介:肖亮,男,1982年生,汉族,江西省南昌市人,主管技师,硕士,主要从事医学检验及基础研究。
  • 基金资助:

    江西省卫计委中医药科研课题(2015A032);江西省教育厅科学技术研究项目(150882)

Effects of caveolin-1 on the expression of epidermal growth factor in fibroblasts co-cultured with breast cancer cells

Xiao Liang, Wang Ying, Yang Xiao-jun, Yang Jun-ping   

  1. Department of Laboratory Medicine, the Affiliated Hospital of Jiangxi University of Traditional Chinese Medicine, Nanchang 330006, Jiangxi Province, China
  • Revised:2017-02-13 Online:2017-07-18 Published:2017-07-28
  • Contact: Yang Jun-ping, Associate professor, Department of Laboratory Medicine, the Affiliated Hospital of Jiangxi University of Traditional Chinese Medicine, Nanchang 330006, Jiangxi Province, China
  • About author:Xiao Liang, Master, Technologist-in-charge, Department of Laboratory Medicine, the Affiliated Hospital of Jiangxi University of Traditional Chinese Medicine, Nanchang 330006, Jiangxi Province, China
  • Supported by:

    the Chinese Medicine Research Project of the Health and Family Planning Commission of Jiangxi Province, No. 2015A032; the Science and Technology Project of the Education Department of Jiangxi Province, No. 150882

摘要:

文章快速阅读:

文题释义:
Caveolin-1蛋白与乳腺癌的关系:
Caveolin-1蛋白是构成细胞胞膜窖的主要结构蛋白,相对分子质量为22 000,其基因位于人类染色体的7q31.1位置,几乎存在于所有细胞中,基质细胞例如成纤维细胞、内皮细胞、脂肪细胞中表达最为丰富。Caveolin-1蛋白是胞膜窖的信号节点,通过各种信号通路发挥重要生物学作用,且与乳腺间质成纤维细胞的转化及肿瘤的发生发展有着密切关系。
表皮生长因子与乳腺癌的关系:表皮生长因子是研究最多也是最早被确认结构的生长因子,作为一种含有53个氨基残基的单链多肽,通过激活内在的表皮生长因子受体,经一系列的信号传递,发挥复杂的生物学效应,比如调控细胞增殖、分化、凋亡等,并且与肿瘤的发生、发展关系密切。

 

摘要
背景:
Caveolin-1是小窝蛋白中最主要的功能蛋白,参与多种细胞生物学过程,与乳腺癌的发生、发展关系密切。
目的:探讨乳腺癌基质成纤维细胞内Caveolin-1蛋白对表皮生长因子的影响。 
方法:采用siRNA技术干扰成纤维细胞ESF-1内Caveolin-1蛋白的表达,QRT-PCR、Wesren-Blot 筛选和验证siRNA的最佳干扰效果,得出最佳沉默模型为ESF-1-Caveolin-1 SiRNA-N.2。①将ESF-1-Caveolin-1 SiRNA-N.2细胞与乳腺癌BT474细胞共培养(实验组),以单独培养ESF-1细胞、ESF-1-Caveolin-1 SiRNA-N.2细胞为对照,培养24,48 h后,QRT-PCR检测ESF-1细胞内表皮生长因子的表达;培养48,72 h后,ELISA检测培养液内表皮生长因子的表达;②将ESF-1-Caveolin-1 SiRNA-N.2(实验组)、ESF-1(对照组)分别与乳腺癌BT474细胞共培养,以单独培养的BT474细胞为空白对照,培养24,48 h后,CKK-8法检测BT474细胞增殖。

结果与结论:①实验组ESF-1细胞内表皮生长因子mRNA表达高于ESF-1细胞组、ESF-1-Caveolin-1 SiRNA-N.2细胞组(P<0.05),ESF-1-Caveolin-1 SiRNA-N.2细胞组高于ESF-1细胞组(P < 0.05);②实验组、ESF-1-Caveolin-1 SiRNA-N.2细胞组培养液内表皮生长因子蛋白表达高于ESF-1细胞组(P < 0.05),实验组高于ESF-1-Caveolin-1 SiRNA-N.2细胞组(P < 0.05);③培养48 h,实验组、对照组细胞增殖快于空白对照组(P < 0.05),实验组快于对照组(P < 0.05);④结果表明,干扰Caveolin-1蛋白表达能促进纤维细胞表皮生长因子的表达,且在与乳腺癌细胞共培养条件下,作用更为显著;共培养条件下,干扰成纤维细胞Caveolin-1蛋白表达能促进乳腺癌细胞增殖。

 

 

ORCID: 0000-0003-3095-9522(杨军平)

关键词: 组织构建, 组织工程, 乳腺癌, 成纤维细胞, Caveolin-1, 表皮生长因子, siRNA

Abstract:

BACKGROUND: Caveolin-1, as the most important functional protein in caveolae, is involoved in a variety of cell biological processes, and is closely related to the occurrence and development of breast cancer.

OBJECTIVE: To explore the effect of caveolin-1 on epidermal growth factor (EGF) in fibroblasts after co-cultured with breast cancer cells.
METHODS: Caveolin-1 expression in fibroblast lines ESF-1 was interfered with siRNA, and the optimal effect was determined through QRT-PCR and western blot assay. (1) The optimal silencing model of ESF-1-Caveolin-1 SiRNA-N.2 was obtained, which was co-cultured with breast cancer cells BT474 as experimental group, single-cultured ESF-1 and ESF-1-Caveolin-1 SiRNA-N.2 as controls. The expression level of EGF in ESF-1 was detected by QRT-PCR at 24 and 48 hours of culture; the expression level of EGF in the culture medium was detected by ELISA at 48 and 72 hours of culture. (2) ESF-1-Caveolin-1 SiRNA-N.2 (experimental group) and ESF-1 (control group) were respectively co-cultured with BT474, and single-cultured BT474 as blank control group. The proliferation of BT474 was detected by cell counting-kit 8 assay after 24- and 48-hour culture.
RESULTS AND CONCLUSION: The mRNA expression level of EGF in the experimental group was significantly higher than that in the other two groups (P < 0.05), and the EGF expression level in the ESF-1-Caveolin-1 SiRNA-N.2 group was significantly higher than that in the ESF-1 group (P < 0.05). The protein expression level of EGF was ranked as follows: experimental group > ESF-1-Caveolin-1 SiRNA-N.2 group > ESF-1 group (P < 0.05). The proliferation of BT474 cells was significantly increased after co-cultured with BT474 cells and ESF-1 siRNA Caveolin-1 cells, especially with BT474 cells (P < 0.05). Our findings suggest that Caveolin-1 siRNA can promote the expression of EGF in fibroblasts, especially co-cultured with breast cancer cells. Furthermore, caveolin-1 siRNA accelerates the proliferation of breast cancer cells after co-cultured with fibroblasts.

Key words: Breast Neoplasms, Fibroblasts, Epidermal Growth Factor, Tissue Engineering

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