中国组织工程研究 ›› 2013, Vol. 17 ›› Issue (2): 296-300.doi: 10.3969/j.issn.2095-4344.2013.02.020

• 组织构建细胞学实验 cytology experiments in tissue construction • 上一篇    下一篇

人角质形成细胞Notch信号通路与转化生长因子β调控受体蛋白的作用

薛斯亮1,王晓珊2,李东川3,张 珏4, 5   

  1. 1 四川大学华西医院皮肤科,四川省成都市  610041
    2 四川省医学科学院四川省人民医院肿瘤科  四川省成都市  610041
    3 成都市363医院妇产科,四川省成都市  610041
    4 遵义医药高等专科学校,贵州省遵义市  563000
    5 四川大学华西医院生物治疗国家重点实验室干细胞与组织工程研究室,四川省成都市  610041
  • 收稿日期:2012-04-13 修回日期:2012-05-21 出版日期:2013-01-08 发布日期:2013-01-08
  • 通讯作者: 张珏,硕士,讲师,遵义医药高等专科学校,贵州省遵义市563000;四川大学华西医院生物治疗国家重点实验室干细胞与组织工程研究室,四川省成都市 610041 zhangjue25@163.com
  • 作者简介:薛斯亮☆,男,1980年生,汉族,四川省成都市人,2010年四川大学华西临床医学院毕业,博士,主要从事皮肤抗衰老与皮肤肿瘤方面的研究。xuesiliang@163.com

Notch signal pathway effect on receptor protein regulation by transforming growth factor beta in primary human keratinocytes

Xue Si-liang1, Wang Xiao-shan2, Li Dong-chuan3, Zhang Jue4, 5   

  1. 1 Department of Dermatology, West China Hospital, Sichuan University, Chengdu  610041, Sichuan Province, China
    2 Department of Oncology, Sichuan Provincial People’s Hospital, Chengdu  610072, Sichuan Province, China
    3 Department of Obstetrics and Gynecology, the 363 Hospital of Chengdu City, Chengdu  610041, Sichuan Province, China
    4 Zunyi Medical and Pharmaceutical College, Zunyi  563000, Guizhou Province, China
    5 Division of Stem Cell and Tissue Engineering, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu  610041, Sichuan Province, China
  • Received:2012-04-13 Revised:2012-05-21 Online:2013-01-08 Published:2013-01-08
  • Contact: Zhang Jue, Master, Lecturer, Zunyi Medical and Pharmaceutical College, Zunyi 563000, Guizhou Province, China; Division of Stem Cell and Tissue Engineering, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, Sichuan Province, China zhangjue25@163.com
  • About author:Xue Si-liang☆, Doctor, Department of Dermatology, West China Hospital, Sichuan University, Chengdu 610041, Sichuan Province, China xuesiliang@163.com

摘要:

背景:在皮肤中受体蛋白酪氨酸磷酸酶kappa的调控至关重要,而转化生长因子β似乎是其调控的上游因子,既然Notch信号和转化生长因子β信号通道如此相关,那么Notch是不是也参加了转化生长因子β信号对受体蛋白酪氨酸磷酸酶kappa的调控呢?
目的:探讨Notch信号通道在人角质形成细胞中对转化生长因子β调控受体蛋白酪氨酸磷酸酶kappa的作用的影响。
方法:在分别用Jagged-1激活和用Γ-分泌酶抑制剂抑制Notch信号通道后,加入转化生长因子β,同时设立对照组,用Real-time PCR测试人角质形成细胞中受体蛋白酪氨酸磷酸酶kappa mRNA表达量。
结果与结论:覆盖率为40%的角质形成细胞在加入了转化生长因子β后,受体蛋白酪氨酸磷酸酶kappa mRNA量在各时间点均高于对照组。在用Jagged-1激活Notch通道的角质形成细胞中,单独加入Jagged-1、转化生长因子β及两者都加入时均高于对照组(P < 0.05,P < 0.01)。在用γ-分泌酶抑制剂抑制Notch通道的角质形成细胞中,只加入转化生长因子β显著高于对照组(P < 0.01),只加入γ-分泌酶抑制剂和两者均加入时与对照组比较,差异无显著性意义(P > 0.05)。说明加入转化生长因子β导致角质形成细胞中受体蛋白酪氨酸磷酸酶kappa表达增加,而分别对Notch信号进行激活和抑制后发现,受体蛋白酪氨酸磷酸酶kappa信号分别显著增加和显著被抑制。所以在转化生长因子β升高受体蛋白酪氨酸磷酸酶kappa表达过程中Notch信号通道是非常重要且不可或缺的。

关键词: 组织构建, 组织构建细胞学实验, 转化生长因子β, 受体蛋白酪氨酸磷酸酶kappa, 人角质形成细胞, Notch, NICD

Abstract:

BACKGROUND: Regulation of the receptor protein tyrosine phosphatase kappa (RPTP-κ) in the skin is essential, while transforming growth factor beta (TGF-β) appears to be an upstream factor of its regulation. As Notch signaling pathway is similar to TGF-β signaling pathway, whether Notch participates in the regulation of RPTP-κ transcription by TGF-β signaling?
OBJECTIVE: To find out the role of Notch signal in regulation of RPTP-κ transcription by TGF-β.
METHODS: Jagged-1 and gamma-secretase inhibitors (GSI) were use respectively to activate and inhibit Notch signal followed by addition of TGF-β. Simultaneously, control group was set. Real-time PCR was used to determine RPTP-k mRNA expression in human keratinocytes.
RESULTS AND CONCLUSION: After adding TGF-β into 40% confluent keratinocytes, the RPTP-κ mRNA expression was higher at different time as compared with the control group. Following Jagged-1 activated Notch signaling pathway, the mRNA expression of RPTP-κ in the keratinocytes was higher when Jagged-1, TGF-β or their combination was added into the cells as compared with the control group (P < 0.05, P < 0.01). Following GSI inhibited Notch signaling pathway, the mRNA expression of RPTP-κ in the keratinocytes was higher only when TGF-β was added into the cells as compared with the control group (P < 0.01), and no significant difference was seen when GSI alone or combination of TGF-β and GSI was added into the cells as compared with the control group (P > 0.05). These findings indicate that the mRNA expression of RPTP-κ in the keratinocytes was increased after TGF-β was added, and following activation or inhibition of Notch signaling, the mRNA expression of RPTP-κ was significantly increased or suppressed. Therefore, Notch signaling is very important and indispensable in the regulation of RPTP-κ by TGF-β.

Key words: tissue construction, cytological experiments of tissue construction, transforming growth factor beta, receptor protein tyrosine phosphatase kappa, human keratinocytes, Notch, NICD

中图分类号: