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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Loss of the gene encoding mannose 6-phosphate/insulin-like growth factor II receptor is an early event in liver carcinogenesis
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Loss of the gene encoding mannose 6-phosphate/insulin-like growth factor II receptor is an early event in liver carcinogenesis

机译:甘露糖6-磷酸/胰岛素样生长因子II受体编码基因的丢失是肝癌发生的早期事件

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摘要

This report shows that loss of heterozygosity at the mannose 6-phosphate/insulin-like growth factor II receptor (M6P/IGF2R) locus occurred in 5/8 (63/100) dysplas- tic liver lesions and 11/18 (61/100) hepatocellular carcinomas (HCCs) associated with the high risk factors of hepatitis virus infection and liver cirrhosis. Mutations in the remaining allele were detected in 6/11 (55/100) HCCs, including deletions in a polydeoxyguanosine region known to be a target of microsat- ellite instability. M6P/IGF2R allele loss was also found in cirrhotic tissue of clonal origin adjacent to these dysplastic lesions and HCCs, demonstrating that M6P/IGF2R inactiva- tion occurs early in liver carcinogenesis.
机译:该报告表明,甘露糖6-磷酸/胰岛素样生长因子II受体(M6P / IGF2R)基因座的杂合性丧失发生在5/8(63/100)发育不良的肝脏病变和11/18(61/100) )与肝炎病毒感染和肝硬化的高风险因素相关的肝细胞癌(HCC)。在6/11(55/100)HCC中检测到了剩余等位基因的突变,包括已知是微卫星不稳定性靶点的聚脱氧鸟苷区域中的缺失。 M6P / IGF2R等位基因缺失也在这些不典型增生性病变和HCC邻近的克隆性肝硬化组织中发现,表明M6P / IGF2R失活是在肝癌发生的早期发生的。

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