中国组织工程研究 ›› 2013, Vol. 17 ›› Issue (46): 7988-7993.doi: 10.3969/j.issn.2095-4344.2013.46.002

• 骨组织构建 bone tissue construction • 上一篇    下一篇

白细胞介素1受体相关激酶4基因沉默抑制人成骨样细胞相关基因的表达

杨子波1,黄保丁2,向珊珊3,邬培慧1,张志奇1,廖威明1   

  1. 1中山大学附属第一医院关节外科,广东省广州市  510080;2中山大学附属第六医院骨科,广东省广州市  510655;3江门市中心医院,广东省江门市  529030
  • 出版日期:2013-11-12 发布日期:2013-11-30
  • 通讯作者: 廖威明,博士,主任医师,博士生导师,中山大学附属第一医院关节外科,广东省广州市 510080 sysugjwk@126.com
  • 作者简介:杨子波☆,男,1977年生,广东省广州市人,汉族,2012年中山大学毕业,博士,主治医师,主要从事髋关节及膝关节退行性、先天性疾病及创伤的治疗。 dr_youngball@hotmail.com
  • 基金资助:

    国家自然科学基金项目(81171709)*

Inhibitory effect of interleukin-1 receptor-associated kinase-4 silencing on mitogen-activated protein kinases expression in human osteoblast-like cells

Yang Zi-bo1, Huang Bao-ding2, Xiang Shan-shan3, Wu Pei-hui1, Zhang Zhi-qi1, Liao Wei-ming1   

  1. 1 Department of Orthopedic & Joint Surgery, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou  510080, Guangdong Province, China; 2 Department of Orthopedics, the Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou  510655, Guangdong Province, China; 3 Jiangmen Central Hospital, Jiangmen  529030, Guangdong Province, China
  • Online:2013-11-12 Published:2013-11-30
  • Contact: Liao Wei-ming, M.D., Chief physician, Doctoral supervisor, Department of Orthopedic & Joint Surgery, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, Guangdong Province, China sysugjwk@126.com
  • About author:Yang Zi-bo☆, M.D., Attending physician, Department of Orthopedic & Joint Surgery, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, Guangdong Province, China dr_youngball@hotmail.com
  • Supported by:

    the National Natural Science Foundation of China, No. 81171709

摘要:

背景:造成假体周围骨溶解的完整分子机制目前尚未完全清楚。假体周围骨溶解、吸收是人工关节松动的典型病理生理过程。白细胞介素1通过MAPK信号通路影响骨吸收进程。
目的:实验通过观察siRNA沉默白细胞介素1受体相关激酶4(interleukin-1 receptor-associated kinase-4,IRAK-4)基因表达对人成骨样细胞株MG63的MAPK信号转导通路的影响,为防治人工关节置换后假体周围骨溶解提供实验基础。
方法:以Lipofectamine 2000为载体将IRAK-4-siRNA转染入MG63细胞。实验分为3组,空白组不加入任何转染试剂;对照组以scrambled siRNA序列进行转染;沉默组以特异性IRAK-4-siRNA序列进行转染。Western blot检测靶细胞细胞外调节蛋白激酶、c-Jun氨基末端激酶和p38MAPK基因的表达。
结果与结论:与对照组相比,靶基因沉默组的IRAK-4 mRNA及蛋白表达水平显著降低(P < 0.05)。MG63细胞IRAK-4表达下调后,与空白组和对照组相比,c-Jun氨基末端激酶1/2P46、磷酸化细胞外调节蛋白激酶1/2、磷酸化p38MAPK表达下调分别为62%,64%,68%(P < 0.05)。结果证实,siRNA沉默IRAK-4基因抑制人成骨样细胞株MG63细胞外调节蛋白激酶、c-Jun氨基末端激酶和p38MAPK基因的表达。

关键词: 组织构建, 骨组织构建, 假体周围骨溶解, 无菌性松动, 人成骨样细胞, 白细胞介素1受体相关激酶4, RNA干扰, 基因沉默, 基因转染, 促分裂素原活化蛋白激酶, 国家自然科学基金

Abstract:

BACKGROUND: The molecular mechanism of periprosthesis osteolysis is not yet completely clear. Periprosthetic osteolysis and absorption is the pathological and physiological process typical of artificial joint loosening. Interleukin-1 can affect bone resorption process through a mitogen-activated protein kinases (MAPK) signaling pathway.
OBJECTIVE: To explore the effects of siRNA-induced interleukin-1 receptor-associated kinase-4 gene (IRAK-4) silence on MAPK expression in MG63 cells, which may provide experimental basis for treatment and prevention of periprosthesis osteolysis.
METHODS: The siRNA sequences of the target gene, IRAK-4, were constructed and transferred into MG63 cells using Lipofectamine 2000. There were three groups: blank group=MG63 cells, control group = MG63 cells transfected with scrambled IRAK-4siRNA, and silence group=MG63 cells transfected with specific IRAK-4 siRNA. The protein level of extracellular regulated kinase (ERK), c-Jun N-terminal kinase (JNK) and p38 mitogen-  activated protein kinases (p38MAPK) were detected by western blot assay.
RESULTS AND CONCLUSION: The expression of IRAK-4 mRNA and protein in the silence group was significantly decreased compared with the control group. Compared with the blank and control groups, 48 hours after the transfection, IRAK-4 gene silencing in MG63 cells decreased protein expression of p-JNK1/2P46, p-ERK1/2 and p-p38MAPK  (P < 0.05). IRAK-4 silencing inhibited ERK, JNK and p38MAPK expression in osteoblast-like cells.

Key words: osteoblasts, interleukin-1, gene silencing, genes, regulator, mitogen-activated protein kinases

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