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NLRC5对HepaG2.2.15细胞表面MHC-Ⅰ分子表达水平的调控研究

发布时间:2018-02-26 17:00

  本文关键词: 乙肝病毒 HepG2.2.15 NLRC5 主要组织相容性复合物1 出处:《泸州医学院》2014年硕士论文 论文类型:学位论文


【摘要】:目的:通过对核苷酸结合寡聚化结构域样受体家族(Nucleotide-binding oligomerization domain receptors,NOD-like receptors, NLRs)中C5(Caspase recruitment domain5,CARD5)型受体在稳定转染HBV人肝癌细胞株(HepG2.2.15)中的表达调控,观察该细胞表面分子主要组织相容性复合体1(major histocompatibility complex1,MHC-I)的表达。方法:1.观察NLRC5和MHC-I在HepG2、HepG2.2.15细胞株的表达情况;通过质粒转染HepG2.2.15过表达NLRC5,,观察对MHC-I的表达调控。采用反转录聚合酶链锁反应(reverse transcription-polymerase chain reaction,RT-PCR),免疫印迹试验(Western-blot)及流式细胞术检测NLRC5和MHC-Ⅰ的基因和蛋白表达水平。2.实验分组,按照细胞及干预因子不同分为7组: A组为仅培养HepaG2细胞(空白对照组);B组为HepaG2+IFN-γ组;C组为仅培养HepaG2.2.15; D组为HepaG2.2.15+IFN-γ组; E组为HepaG2.2.15+pcDNA3.1-NLRC5;F组为HepaG2.2.15+pcDNA3.1;G组为HepaG2.2.15+pcDNA3.1-NLRC5+来霉素B(LMB)。结果:1. NLRC5和MHC-Ⅰ在HepaG2.2.15细胞中,其基因和蛋白水平表达较HepaG2明显降低(P0.05);2.在HepaG2.2.15细胞中,转染质粒过表达NLRC5后,可上调MHC-Ⅰ的表达;3. IFN-γ可诱导NLRC5在HepG2、HepG2.2.15细胞株的表达。结论:1.HBV感染能够明显下调HepG2细胞NLRC5及MHC-Ⅰ表达;2.在HepG2.2.15细胞中,NLRC5可正调控MHC-Ⅰ的表达;3. IFN-γ可诱导NLRC5在HepG2、HepG2.2.15细胞株的表达。
[Abstract]:Aim: to regulate the expression of nucleotide-binding oligomerization domain receptor (NLRs) in nucleleotide-binding oligomerization domain receptor (NLRs) in stable transfection of HBV human hepatocellular carcinoma cell line HepG2.2.15. The expression of major histocompatibility complex1MHC-I) on the cell surface was observed. Methods: 1. The expression of NLRC5 and MHC-I in HepG2.2.15 cell line was observed. The expression and regulation of HepG2.2.15 were observed by plasmid transfection with HepG2.2.15. Reverse transcription-polymerase chain reactionation was used to detect the gene and protein expression levels of NLRC5 and MHC- 鈪

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