Department of Pathology, School of Medicine, University of Washington, Seattle, Washington 98109, USA.
Exp Mol Pathol. 2010 Apr;88(2):287-92. doi: 10.1016/j.yexmp.2010.01.002. Epub 2010 Jan 14.
Hepatocellular carcinoma (HCC) is known to be associated with both HBV and HCV. While epigenetic changes have been previously reported to be associated with hepatocellular carcinoma (HCC), whether the epigenetic profile of HBC associated HCC differs from that of HCV-associated HCC is unclear. We analyzed DNA methylation of ten genes (APC, CCND2, CDKN2A, GSTP1, HOXA9, RARB, RASSF1, RUNX, SFRP1, and TWIST1) using MethyLight assays on 65 archived liver tissue blocks. Three genes (APC, CCND2, and GSTP1) were frequently methylated in normal liver tissues. Five genes (APC, CDKN2A, HOXA9, RASSF1, and RUNX) were significantly more frequently methylated in malignant liver tissues than normal liver tissues. Among HCC cases, HOXA9, RASSF1 and SFRP1 were methylated more frequently in HBV-positive HCC cases, while CDKN2A were significantly more frequently methylated in HCV-positive HCC cases. Our data support the hypothesis that HCC resulting from different viral etiologies is associated with different epigenetic changes.
肝细胞癌(HCC)与乙型肝炎病毒(HBV)和丙型肝炎病毒(HCV)均有关。尽管先前已经报道了表观遗传变化与肝细胞癌(HCC)有关,但 HBV 相关 HCC 的表观遗传谱是否与 HCV 相关 HCC 不同尚不清楚。我们使用 MethyLight 分析了 65 个存档肝组织块中十个基因(APC、CCND2、CDKN2A、GSTP1、HOXA9、RARB、RASSF1、RUNX、SFRP1 和 TWIST1)的 DNA 甲基化。三个基因(APC、CCND2 和 GSTP1)在正常肝组织中经常发生甲基化。五个基因(APC、CDKN2A、HOXA9、RASSF1 和 RUNX)在恶性肝组织中比在正常肝组织中更频繁地发生甲基化。在 HCC 病例中,HBV 阳性 HCC 病例中 HOXA9、RASSF1 和 SFRP1 的甲基化更为频繁,而 HCV 阳性 HCC 病例中 CDKN2A 的甲基化更为频繁。我们的数据支持这样一种假设,即不同病毒病因引起的 HCC 与不同的表观遗传变化有关。