中国寄生虫学与寄生虫病杂志 ›› 2004, Vol. 22 ›› Issue (5): 8-286.

• 论著 • 上一篇    下一篇

转染弓形虫致密颗粒蛋白-1编码基因的小鼠巨噬细胞生物学特性

彭碧文1,2,林建银1*,章涛1,蒋明森2
  

  1. 1 福建医科大学分子医学研究中心,福州 350004 2 武汉大学医学院,武汉 430071
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2004-10-30 发布日期:2004-10-30

Biological Features of Mouse Macrophage Transfected with Toxoplasma gondii GRA-1 Gene

PENG Bi wen,LIN Jian yin*,ZHANG Tao,JIANG Ming sen
  

  1. Research Center of Molecular Medicine,Fujian Medical University,Fuzhou 350004,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2004-10-30 Published:2004-10-30

摘要:   目的 探讨转染弓形虫致密颗粒蛋白1编码基因(P24)前后巨噬细胞生物学性状的改变。 方法 将构建的重组质粒用脂质体介导,转染到小鼠巨噬细胞RAW264.7,抗生素G418筛选出阳性克隆,逆转录 聚合酶链反应方法鉴定并比较不同细胞株P24的表达。光学显微镜观察形态学改变并绘制生长曲线。 结果 CytoP24 RAW264.7、NucP24 RAW264.7及MitoP24 RAW264.7三株细胞的P24mRNA表达水平无显著差异,ERP24RAW264.7明显高于前三者。而转染空载体的4株细胞未见P24mRNA的表达。ERP24 RAW264.7较未转染的细胞贴壁速度快、生长能力强。 结论 P24的表达产物导致了巨噬细胞转染生长增殖能力的增强

关键词: 弓形虫, 巨噬细胞, 致密颗粒蛋白-1编码基因, 转染, 生物学特性

Abstract:  Objective To investigate the change of biological features of macrophages after transfected by Toxoplasma gondii GRA 1 genes (P24). Methods The transfected cells Cyto P24 RAW264.7, Nuc P24 RAW264.7, Mito P24 RAW264.7 and ER P24 RAW264.7 were studied by RT PCR to determine the P24 mRNA expression. Growth features of the cells were examined with microscopy and the cell growth curve was developed. Results In four cell lines, expression of ER P24 RAW 264.7 was found to be higher than the other three, and there was no P24 mRNA expression in either of the cells without P24 insert. The attachment and the proliferation of ER-P24-RAW264.7 were more rapid than normal RAW264.7. Conclusion Transfection of mouse macrophages ER RAW264.7 strain with T. gondii P24 gene leads to a prominent change of biological features in the studied cell line.

Key words: Toxoplasma gondii, Macrophage, Toxoplasma gondii GRA-1 genes, Transfection, Biological feature