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Effects of Hepatitis B Virus X Protein on Proliferation of Hepatic Stellate Cells and mRNA Expr essi on of TGFβ1 and CTGF
Author(s): CHEN Hongyi ng, CHEN Zhi xi n, WANG Xi aozhong
Pages: 127-
132
Year: 2013
Issue:
3
Journal: Journal of Fujian Medical University
Keyword: viral proteins; hepatitis B virus; transforming grow th factor beta; hepatocytes; astrocytes; immediate-early proteins;
Abstract: 目的研究乙肝病毒X蛋白(HBx)对肝星状细胞(HSC)增殖的影响及其可能的分子机制。方法运用分子生物学方法构建稳定表达 H BV X 基因的 HL-7702肝细胞株(L02/x )。RT-PCR、Western blot 鉴定L02/x细胞 H BV X基因的稳定表达。将HSC细胞分别与L02/x、转染空质粒和未转染的肝细胞共培养36 h ,分别命名为HSC/x、HSC/ctr和HSC/NC。CCK-8法检测各组HSC增殖,Real-time PCR法检测在HSC增殖中起重要作用的 TGFβ1和 CTGF基因在各组HSC中的mRNA表达。结果 RT-PCR和Western blot结果显示,L02/x细胞中有 HBV X基因mRNA和蛋白的表达。CCK-8法检测显示,HSC/x的增殖(0.7377±0.0142)显著高于HSC/ctr(0.4970±0.0085)和HSC/NC(0.4913±0.0186),差别具有统计学意义(P<0.01)。Real-time PCR显示,HSC/x细胞中的 TGFβ1和 CTGF mRNA相对表达量(3.1461±0.0705,2.9829±0.0315)均显著高于HSC/ctr(1.0046±0.0040,1.0222±0.0627)和HSC/NC(1.0000±0.0000,1.0000±0.0000),差别具有统计学意义(P均<0.01)。结论肝细胞中表达的 HBV X基因可以上调 HSC细胞 TGFβ1和 CTGF基因的表达,促进共培养的 HSC增殖。
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