中国组织工程研究 ›› 2015, Vol. 19 ›› Issue (15): 2297-2304.doi: 10.3969/j.issn.2095-4344.2015.15.001

• 软骨组织构建 cartilage tissue construction •    下一篇

抵抗素刺激软骨细胞趋化因子CCL3及CCL4基因表达及机制

张紫机,康  焱,杨子波,侯昌禾,黄广鑫,陈蔚深,盛璞义,何爱珊,傅  明,廖威明,张志奇   

  1. 中山大学附属第一医院关节外科,广东省广州市  510080
  • 修回日期:2015-03-17 出版日期:2015-04-09 发布日期:2015-04-09
  • 通讯作者: 张志奇,博士,主治医师,中山大学附属第一医院关节外科,广东省广州市 510080
  • 作者简介:张紫机,男,1984年生,广东省河源市人,汉族,2012年中山大学毕业,博士,主治医师,主要从事关节外科、软骨修复的研究。
  • 基金资助:

    国家自然科学基金资助项目(81171709,81301558,81371941,81201388);教育部高等学校博士点基金新教师类资助项目(20130171120074);广东省自然科学基金博士启动项目(S2013040016269)

Resisin stimulates the expression of CCL3 and CCL4 in chondrocytes

Zhang Zi-ji, Kang Yan, Yang Zi-bo, Hou Chang-he, Huang Guang-xin, Chen Wei-shen, Sheng Pu-yi, He Ai-shan, Fu Ming, Liao Wei-ming, Zhang Zhi-qi   

  1. Department of Joint Surgery, First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, Guangdong Province, China
  • Revised:2015-03-17 Online:2015-04-09 Published:2015-04-09
  • Contact: Zhang Zhi-qi, M.D., Attending physician, Department of Joint Surgery, First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, Guangdong Province, China
  • About author:Zhang Zi-ji, M.D., Attending physician, Department of Joint Surgery, First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, Guangdong Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81171709, 81301558, 81371941, 81201388; the National Research Foundation for the Doctoral Program of Higher Education, No. 20130171120074; the Natural Science Foundation of Guangdong Province, No. S2013040016269

摘要:

背景:既往研究表明抵抗素可刺激软骨细胞产生大量趋化因子,在炎症性关节病变中具重要作用,但具体作用机制未明。
目的:进一步探讨抵抗素刺激软骨细胞趋化因子CCL3及CCL4基因表达上调的机制。
方法:培养人源性软骨细胞,T/C-28a2细胞及ATDC5细胞,采用qPCR检测抵抗素刺激趋化因子基因的作用,C/EBPβ表达,核因子κB亚型及软骨特异性miRNAs。给予核因子κB抑制剂(IKK-NBD)和C/EBPβ抑制剂(SB303580),对C/EBPβ 及核因子κB的共同调节作用进行检测。在给予抵抗素刺激或无抵抗素刺激时分别进行亚细胞结构定位检测。
结果与结论:①抵抗素可非依赖性上调趋化因子基因表达。②软骨细胞对抵抗素刺激应答具有非严格细胞特异性,通过C/EBPβ抑制剂、核因子κB及一些软骨细胞特异性miRNAs,可对趋化因子基因表达进行联合调控。③一过性核因子κB活性增高可增强C/EBPβ活性,且两个转录因子对趋化因子基因CCL3及CCL4的作用均为非依赖性。



中国组织工程研究
杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程


全文链接:

关键词: 组织构建, 软骨组织工程, 抵抗素, 软骨细胞, 趋化因子, CCL3, CCL4, 转录调控, C/EBPβ, 核因子κB, 转录后调控, miRNAs, 国家自然科学基金

Abstract:

BACKGROUND: Previous studies have indicated that resistin stimulates a large set of chemokines in chondrocytes that are known to be important in inflammatory joint lesions.
OBJECTIVE: To further investigate the mechanism of co-regulation roles of transcription and post-transcription in the up-regulation of two chemokine genes CCL3 and CCL4 in chondrocytes in response to resistin.
METHODS: Human chondrocytes, T/C-28a2 and ATDC5 cells were cultured. The function of resistin on the chemokine genes, and the expression of C/EBPβ, nuclear factor-κB isoforms and chondrogenic specific miRNAs were tested by qPCR. The co-regulation of C/EBPβ and nuclear factor-κB was investigated by nuclear factor-κB inhibitor (IKK-NBD) and C/EBPβ inhibitor (SB303580) treatments, and subcellular localization was detected with or without resistin stimulation.
RESULTS AND CONCLUSION: Resistin could increase the expression of chemokine genes independently. Chondrocytes reacted in a non-restrictedly cell-specific manner to resistin; C/EBPβ inhibitor, nuclear factor-κB and some chondrogenic specific miRNAs in a combinatorial manner regulated chemokine gene expression. The activity of C/EBPβ was augmented by a transient increase in activity of nuclear factor-κB, and both transcription factors acted independently on the chemokine genes, CCL3 and CCL4.



中国组织工程研究
杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程


全文链接:

Key words: Chondrocytes, Chemotactic Factors, NF-kappa B

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