›› 2011, Vol. 42 ›› Issue (2): 175-179.doi: 10.3969/j.issn.0529-1356.2011.02.007

• 论著 • 上一篇    下一篇

肿瘤相关基因MIP在HeLa细胞中的亚细胞定位及其变化

叶晓霞1* ;霍克克2;陈东1   

  1. 1.广东医学院组织学与胚胎学教研室,广东 湛江 524023;2.复旦大学生命科学院遗传研究所,上海 200433
  • 收稿日期:2010-05-12 修回日期:2010-05-31 出版日期:2011-04-06
  • 通讯作者: 叶晓霞

Subcellular localization and changes of tumor-related gene MIP in HeLa Cells

  1. 1.Department of Histology and Embryology, Guangdong Medical College,Guangdong Zhanjiang 524023,China;2.Institute of Genetics, School of Life Science, Fudan University,Shanghai 200433, China
  • Received:2010-05-12 Revised:2010-05-31 Online:2011-04-06
  • Contact: YE Xiao-xia

关键词: MIP基因, FASP1, MafF, 亚细胞定位, 荧光融合蛋白, 激光扫描共焦显微镜

Abstract: ObjectiveTo explore the subcellular localization of tumor-related gene MIP, the changes and the co-localization when MIP was co-transfected along with its interacting protein FASP1 or MafF into HeLa cells. MethodsUsing prediction and analysis softwares about protein structure and subcellular localization online, the possible structure and subcellular location of MIP protein were analyzed. Combined analysis results, fluorescent fusion protein tracer technique and confocal laser scanning microscope were used to observe and compare the subcellular localization of MIP in HeLa cells transfected with Pegfp-C1-MIP or Pegfp-N2-MIP alone. Then pDsRed-FASP1 or pDsRed-MafF was transfected alone, or co-transfected with MIP-GFP. After observing the distribution of green or red fluorescent proteins, the subcellular localization changes of each protein were compared and co-localization conditions were analyzed. ResultsWhen it was transfected alone, MIP was mainly distributed in cytoplasm unevenly. MIP’s subcellular location had a slight change as GFP was fused to its N-or C-terminal. The uneven distribution of MIP-GFP was more typical than GFP-MIP and showed a significant punctate accumulation in cytoplasm. When pDsRed-FASP1 was transfected alone, FASP1 dispersed in cytoplasm. After co-transfection, the subcellualr distributions of FASP1 and MIP had no major changes and they co-localized in cytoplasm. When pDsRed-MafF was transfected alone, MafF dispersed in nucleus. But the subcellular localizations were both significantly changed in HeLa cells co-transfected with MIP and MafF, and thus they could c-localize in multiple nucleoli. ConclusionThis study demonstrated that MIP could interact with FASP1 or MafF in different compartment of cells, which suggested that MIP could be an important signaling molecule to comply different function in cytoplasm

Key words: MIP gene, FASP1, MafF, Subcellular localization, Fluorescent fusion protein, Confocal laser scanning microscope

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