J4 ›› 2012, Vol. 38 ›› Issue (6): 1063-1067.

• 基础研究 • 上一篇    下一篇

DNA-PKcs协同自身免疫调节因子调控小鼠腹腔巨噬细胞Toll样受体的表达及其意义

  

  1. (1. |吉林大学白求恩医学院免疫学系|吉林 长春 130021;2. 吉林大学第一医院转化医学研究院|吉林 长春 130021)
  • 收稿日期:2012-07-12 出版日期:2012-11-28 发布日期:2012-11-28
  • 通讯作者: 杨 巍 E-mail:(Tel:0431-85619476,E-mail:ywei@jlu.edu.cn)
  • 作者简介:吴静(1980-)|女|吉林省白山市人|医学博士|主要从事免疫耐受机制方面的研究。
  • 基金资助:

    国家自然科学基金资助课题(81001304)

Expression of Toll like receptor regulated by DNA-PKcs and autoimmune regulator in peritoneal macrophages in mice and its significance

U Jing1,2|FU Hai-ying1|ZHANG Ying-lin1|SUN Ji-tong1|YANG Wei1   


  1. (1. Department of Immunology,Norman Bethune College of Medicine,Jilin University,Changchun 130021,China;2. Institute of Translational Medicine,First Hospital,Jilin University,Changchun 130021,China)
  • Received:2012-07-12 Online:2012-11-28 Published:2012-11-28

摘要:

目的:探讨小鼠腹腔巨噬细胞内DNA-PKcs协同自身免疫调节因子调控Toll样受体(TLRs)的表达水平,阐明外周免疫系统中自身免疫调节因子的调控作用及其意义。方法:小鼠腹腔巨噬细胞分为pEGFPC1/mAire转染组、pEGFPC1/mAire与negative control siRNA共转染组、pEGFPC1/mAire与DNA-PKcs siRNA共转染组、pEGFPC1转染组、pEGFPC1与negative control siRNA共转染组和pEGFPC1与DNA-PKcs siRNA共转染组,采用RT-PCR方法检测各组小鼠腹腔巨噬细胞内TLR1~9的表达水平;采用脂质体转染重组质粒pEGFPC1/mAire和空载质粒pEGFPC1至小鼠腹腔巨噬细胞,采用RT-qPCR方法检测2组细胞TLR1~9的表达水平;采用RT-qPCR方法检测2组转染细胞沉默DNA-PKcs前后TLRs的表达水平。结果:小鼠腹腔巨噬细胞能表达TLR1~9;与转染pEGFPC1/mAire组细胞比较,转染自身免疫调节因子后巨噬细胞TLR1、3和8的表达水平增加(P<0.05),其他组TLRs表达水平无明显变化(P>0.05);DNA-PKcs沉默后,转染pEGFPC1/mAire组细胞TLR1、3和8的表达水平较未沉默组明显下降(P<0.05),而在转染pEGFPC1的细胞内DNA-PKcs沉默前后TLR1-9表达水平均无明显变化(P>0.05)。结论:在小鼠腹腔巨噬细胞内,自身免疫调节因子能够调控TLR1、3和8的表达,其机制可能与DNA-PKcs协同作用有关。

关键词: 自身免疫调节因子;巨噬细胞;Toll样受体;协同分子

Abstract:

To study the expression levels of the Toll like receptor(TLRs) regulated by DNA-PKcs and autoimmune regulator in peritoneal macrophages in mice,and to clarify the function and significance of autoimmune regulator in peripheral immune system. Methods The macrophages were divided into pEGFPC1/mAire transfection group,pEGFPC1/mAire and negative control siRNA co-transfection group,pEGFPC1/mAire and DNA-PKcs siRNA co-transfection group,pEGFPC1 and negative control siRNA co-transfection group,and  pEGFPC1 and DNA-PKcs siRNA co-transfection group;the expression levels of TLR1-9 in peritoneal macrophages of the mice in various groups  were detected by RT-PCR. The expression levels  of TLR1-9 in peritoneal macrophages were detected by RT-qPCR after transfected with pEGFPC1/mAire and pEGFPC1 into the peritoneal macrophages in mice;the expression levels of TLRs in the transfected cells  before and after silencing   DNA-PKcs  were detected by RT-qPCR. Results The peritoneal macrophages in mice could express TLR1-9. Compared with  pEGFPC1/mAire transfection group,the expression levels of TLR1,3 and 8 were increased in peritoneal macrophages after transfected with autoimmune regulator(P<0.05) and those in the other groups did not changed significantly(P>0.05). After silencing  DNA-PKcs,the expression levels of TLR1,3,and 8 were decreased (P<0.05) in peritoneal macrophages in pEGFPC1/mAire transfection group than thoes in unsilenced group,but the expression levels of TLR1-9 didn’t  have significant changes in macrophages transfected with pEGFPC1 before and after  silence(P>0.05). Conclusion  Autoimmune regulator can regulate the expression levels of TLR1,3,and 8 in peritoneal macrophages in mice,and the mechnism may be  associated with  DNA-PKcs interaction effect.

Key words:  autoimmune regulator;macrophages;Toll-like receptor;partner

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