摘要
目的:探讨蛋白异天冬氨酰甲基转移酶(Protein isoaspartyl-methyltransferase,PIMT)过表达对类风湿关节炎(Rheumatoid arthritis,RA)成纤维样滑膜细胞(Fibroblast-like synoviocytes,FLS)凋亡的影响。方法:构建PIMT表达载体,转染RA-FLS细胞,检测PIMT在RA-FLS细胞表达水平,观察转染后RA-FLS细胞的凋亡情况。结果:转染后的RA-FLS细胞PIMT mRNA和蛋白质表达水平上升,与正常对照和转染空载体的RA-FLS细胞阴性对照相比较,转然后RA-FLS细胞的凋亡增加。结论:PIMT在RA-FLS细胞中表达下降是RA-FLS细胞凋亡减少的一个重要原因,PIMT在RA-FLS细胞增殖/凋亡失调中起作用。
To prove the influence of protein isoaspartyl-methyltransferase ( PIMT ) on the cell apoptosis of fibroblast-like synoviocytes of RA.Methods: The expression vector of PIMT was constructed and transfected in to the RA-FLS, the impact of PIMT on the cell apoptosis of RA-FLS was observed by overexpressing the vector of PIMT.Results:The mRNA and protein level of PIMT in RA-FLS was increased after transfected the vector of PIMT into RA-FLS;compared with the normal cultured RA-FLS and the RA-FLS transfected with the empty vectors ,the cell apoptosis level was also increased.Conclusion:The decreased expression level of PIMT in RA-FLS is an important reason for reduce apoptosis of RA-FLS,and PIMT can affect the imbalance of proliferation/ap-optosis in the RA-FLS.
出处
《中国免疫学杂志》
CAS
CSCD
北大核心
2014年第8期1015-1018,共4页
Chinese Journal of Immunology
基金
国家自然科学基金项目(81373203
81302563)
上海市科技人才计划项目(12XD1404300)
上海市生物医药重点专项基金(11DZ1973800)
上海市卫生局青年基金项目(2012y109)支持