中国组织工程研究 ›› 2013, Vol. 17 ›› Issue (28): 5191-5197.doi: 10.3969/j.issn.2095-4344.2013.28.015

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

高密度接种对转化生长因子β1诱导上皮间充质转化的影响

张殿宝1,王 哲1, 2,施 萍3,庞希宁1   

  1. 1中国医科大学细胞生物学卫生部重点实验室干细胞与再生医学研究室,辽宁省沈阳市  110001;
    2中国医科大学附属盛京医院输血科,辽宁省沈阳市  110004;
    3中国医科大学附属第一医院全科医学教研室,辽宁省沈阳市  110001
  • 出版日期:2013-07-09 发布日期:2013-07-09
  • 通讯作者: 庞希宁,博士,教授,中国医科大学干细胞与再生医学研究室,辽宁省沈阳市 110001 pxining@yahoo.com
  • 作者简介:张殿宝,男,1986年生,辽宁省庄河市人,满族,2009年辽宁大学毕业,主要从事皮肤创伤修复方面的研究。 zhangdianbao@gmail.com
  • 基金资助:

    国家重大科学研究计划项目(973)资助项目(2012CB518100);
    辽宁省科技厅科学技术计划项目(2012205080);
    沈阳市科学技术项目计划(F10-222-4-00、F11-262-9-01)。

High-density seeding affects transforming growth factor-beta1-induced epithelial-mesenchymal transition of HaCaT cells

Zhang Dian-bao1, Wang Zhe1, 2, Shi Ping3, Pang Xi-ning1   

  1. 1Key Laboratory of Cell Biology of Ministry of Health, Stem Cells and Regenerative Medicine Research Institute, China Medical University, Shenyang  110005, Liaoning Province, China;
    2Department of Blood Transfusion, Shengjing Hospital, China Medical University, Shenyang  110004, Liaoning Province, China;
    3Department of General Medicine, the First Affiliated Hospital of China Medical University, Shenyang  110005, Liaoning Province, China
  • Online:2013-07-09 Published:2013-07-09
  • Contact: Pang Xi-ning, M.D., Professor, Key Laboratory of Cell Biology of Ministry of Health, Stem Cells and Regenerative Medicine Research Institute, China Medical University, Shenyang 110001, Liaoning Province, China pxining@yahoo.com
  • About author:Zhang Dian-bao, Key Laboratory of Cell Biology of Ministry of Health, Stem Cells and Regenerative Medicine Research Institute, China Medical University, Shenyang 110001, Liaoning Province, China zhangdianbao@gmail.com
  • Supported by:

    Major State Scientific Research Planning Projects of China (973 Project), No. 2012CB518100*;
    Science and Technology Project of Liaoning Provincial Science and Technology Department, No. 2012205080*;
    Science and Technology Project of Shenyang, No. F10-222-4-00*, F11-262-9-01*

摘要:

背景:细胞密度是影响细胞分化状态的因素之一,对于细胞密度在转化生长因子β1诱导HaCaT细胞上皮间充质转化中的作用尚缺乏深入研究。

目的:观察细胞密度对转化生长因子β1诱导HaCaT细胞上皮间充质转化的影响。

方法:将HaCaT细胞分别以低密度103/cm2和高密度105/cm2接种于六孔板,使用2 µg/L的转化生长因子β1作用48 h,观察细胞形态变化,应用Realtime PCR检测上皮型钙黏蛋白、紧密连接蛋白1和波形蛋白、神经型钙黏蛋白的转录水平,Western blot检测上皮型钙黏蛋白和波形蛋白表达水平。

结果与结论:低密度组的HaCaT细胞在转化生长因子β1处理48 h后细胞间隙变大,细胞形态由多角形变为长梭形,高密度组的细胞间隙变大,但形态变化不明显;Realtime PCR结果显示两组上皮细胞标志物上皮型钙黏蛋白和紧密连接蛋白1的转录均较对照组明显下调(P < 0.05),但高密度组没有低密度组下调明显      (P < 0.05),间充质细胞标志物神经型钙黏蛋白和波形蛋白的转录均较对照组明显上调(P < 0.05),而高密度组与低密度组间差异无显著性意义;Western blot进一步验证了上述上皮型钙黏蛋白和波形蛋白的变化。说明高接种密度抑制转化生长因子β1诱导HaCaT细胞上皮间充质转化。

关键词: 组织构建, 组织构建与生物活性因子, 转化生长因子β1, HaCaT细胞, 生物活性因子, 细胞密度, 上皮间充质转化, 973项目

Abstract:

BACKGROUND: The cell density is one of the factors involved in the state of cell differentiation, and the effect of cell density on transforming growth factor-β1-induced epithelial-mesenchymal transition of HaCaT cells is still unclear.
OBJECTIVE: To observe the effect of cell density on transforming growth factor-β1-induced epithelial-mesenchymal transition of HaCaT cells.
METHODS: HaCaT cells was seeded in 6-well plates at low density of 103/cm2 and high density of 105/cm2, and then treated by 2 μg/L transforming growth factor-β1 for 48 hours, thereafter observed the changes in cell morphology. The transcription levels of epithelial cadherin, tight junction protein-1, vimentin, neuronal-cadherin were detected by real-time PCR, and expression levels of epithelial cadherin and vimentin were detected by Western blot.
RESULTS AND CONCLUSION: Cell gap of HaCaT cells grew larger after treated with transforming growth factor-β1 for 48 hours, and cell morphology was long spindle rather than polygonal in low-density group, while in high-density group without obvious morphological changes. The real-time PCR showed that the transcriptions of epithelial cell marker epithelial cadherin and tight junction protein-1 were suppressed when compared with the control group (P < 0.05), and the decreasing deree in the high-density group was higher than that in the low-density group (P < 0.05), mesenchymal cell marker neuronal-cadherin and vimentin were upregulated in the high-density group and the low-density group when compared with the control group (P < 0.05), and there were no significant differences between high-density group and low-density group. Western blot results verified the changes of neuronal-cadherin and vimentin expression level. These results suggest that the high seeding density can inhibit transforming growth factor-β1-induced epithelial-mesenchymal transition of HaCaT cells.

Key words: tissue construction, tissue construction and bioactive factors, transforming growth factor-β1, HaCaT cells, bioactive factors, cell density, epithelial-mesenchymal transition, National 973 Project of China

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