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Hepatology:HBV pgRNA用于乙型肝炎相关肝癌的肿瘤分型和预后预测

2017-08-22 MedSci MedSci原创

肝癌组织中复制的乙型肝炎病毒是侵入性较弱、具有转录特性的一种病毒亚型。

乙型肝炎病毒是导致肝细胞癌发病的主要原因。然而,对于乙型肝炎病毒在肝癌组织中的复制却了解很少。本研究纳入99例HBsAg阳性、病毒学得到抑制,接受肿瘤切除或肝移植的肝细胞癌患者,分析肿瘤和配对的非肿瘤肝癌组织中的病毒和细胞参数,对总HBV DNA、RNA、共价闭合环状DNA(cccDNA)、前基因组RNA(PgRNA)等HBV活跃复制标志物进行检测。


结果显示,大多数患者的肿瘤组织和非肿瘤组织中均可检测出乙肝病毒总DNA、RNA;然而,非肿瘤肝组织中cccDNA和PgRNA检出率分别为66%和90%,相比之下,部分肿瘤肝组织中cccDNA和PgRNA的检出率分别为39%和67%。对11例患者游离基因形式的X基因进行测序,结果表明11位患者中肿瘤组织和非肿瘤组织中HBV基因型不同,为HBV在肿瘤组织中复制提供了进一步的证据。肿瘤组织中,pgRNA和cccDNA的检出与无肿瘤微血管侵犯和良好预后相关。使用Agilent微阵列对基因表达进行分析,pgRNA阳性的肝癌患者,细胞周期、DNA修复水平较低,表达HBV受体-NTCP,表明肿瘤分化良好。

肝癌组织中复制的乙型肝炎病毒是侵入性较弱、具有转录特性的一种病毒亚型。前基因组RNA来源于非整合的、完整的乙型肝炎病毒基因组,是病毒复制和预后的敏感指标。

原始出处:


Halgand B, Desterke C, Riviere L, et al. Hepatitis B virus pregenomic RNA in hepatocellular carcinoma: A nosological and prognostic determinant. Hepatology, 2017 Aug 12. doi: 10.1002/hep.29463.

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    2018-06-25 klivis
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    2017-08-24 gwc384
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