应用差异PCR技术研究了大肠癌中C－ERBB－2基因的扩增情况.结果发现,大肠癌组织中C－ERBB－2基因存在明显扩增,该基因的扩增与大肠癌组织学分级、远处转移之间均有非常显著的关联.大肠癌中随着癌组织学分级程度的加重,C－ERBB－2基因扩增逐渐向高、低拷贝转移,说明,C－ERBB－2基因扩增在一定程度上反映着大肠癌分化状态和生物学行为,可作为大肠癌患者预后的重要参数,并可指导临床治疗.“,”The amplification of c-erbB-2 gene in colorectal carcinoma was studied by differential PCR technique. The results showed that the poorer the histologic was, the lower and /or higher copy of the c-erbB-2 gene amplification was transferred. The amplification was significantly higher in the patients with distant metastasis transfer than that in no-distant metastasis transfer. It suggested that the amplification of c-erbB-2 gene reflects the differentiation state and biological behavior of colorectal carcinoma ...