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慢性HBV感染肝组织的C端截短型HBx蛋白功能研究 被引量:3

A Study of a C-terminal Truncated HBx Mutant Derived from Chronic HBV Infected Liver Tissues
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摘要 [目的]探讨HBx突变体在肝细胞肝癌发病机制中的作用。[方法]收集慢性HBV感染者肝穿组织标本和HBV阳性的肝细胞肝癌组织标本,提取DNA。通过3D-PCR方法扩增HBx基因并测序检测HBx基因的突变。分析两种组织标本内HBx基因的突变模式,以及突变对HBx蛋白序列的影响。进而构建所检测到的HBx突变体的真核表达质粒,体外研究其生物学活性。[结果]在所检测的7例慢性HBV感染者肝穿标本内,有3例标本内检测到因G到A突变而产生的C端截短型的HBx突变体。在所检测的2例HBV阳性的肝细胞肝癌组织内,也检测到相似的C端截短型HBx突变体。体外研究这种C端截短型HBx突变体的生物学功能发现其具有促进细胞增殖的功能。[结论]C端截短型HBx突变体在HBV相关的肝细胞肝癌发病机制中具有重要意义。
出处 《中国肿瘤》 CAS 2008年第12期1048-1052,共5页 China Cancer
关键词 HBX蛋白 肝肿瘤 HBV
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