黑色素瘤抗原-1、3基因在肝内胆管细胞癌中的表达及临床意义

目的研究黑色素瘤抗原(MAGE)-1和MAGE-3基因在肝内胆管细胞癌(IHCC)组织中的表达,探讨MAGE-1、MAGE-3基因与IHCC患者临床指标的关系。方法RT-PCR方法检测20例IHCC患者癌组织及相应癌旁组织MAGE-1、MAGE-3基因表达,对全部RT-PCR扩增产物中目的基因片段进行DNA测序以证实其为MAGE-1、MAGE-3基因。分析MAGE-1、MAGE-3基因表达与患者性别、年龄、肿瘤直径、有无包膜、肿瘤形态以及乙肝病毒表面抗原等临床指标的关系。结果20例IHCC患者癌组织中MAGE-1、MAGE-3基因表达的阳性率分别为35%和45%,显著高于癌旁组织(0)(P<0·01)。IHCC患者癌组织中MAGE-1、MAGE-3基因表达的阳性率与患者性别、年龄、肿瘤直径、有无包膜以及乙型肝炎病毒感染等指标均无关(P>0·05);MAGE-3基因表达的阳性率与肿瘤形态有关(P<0·05)。结论MAGE-1、MAGE-3基因在IHCC患者肝癌组织中特异性高表达,MAGE-1、MAGE-3基因可能成为IHCC患者免疫治疗的攻击靶点。

Expression of melanoma antigen-1, 3 genes in human intrahepatic cholangiocarcinoma and its clinical significance

Objective To explore the possibility of using melanoma antigen (MAGE)-1 and MAGE-3 gene encoding proteins as an index of potential target for immunotherapy in intrahepatic cholangiocarcinoma (IHCC) patients. Methods The expressions of MAGE-1 and MAGE-3 genes in tumor tissues and tumor adjacent non-IHCC liver tissues were examined by RT-PCR method. The relationship between positive expression rates of MAGE-1 and MAGE-3 genes and clinical data including sex, age, tumor diameters, tumor envelope, tumor nodules number, and hepatitis B virus surface antigen were determined. Results The positive expre-ssion rates of MAGE-1 (35%) and MAGE-3 genes (45%) were significantly higher in the tumor tissues than in tumor adjacent tissues (0)(P<0.01). The positive expression rates of MAGE-1 and MAGE-3 genes had no relationship with the clinical data (P>0.05), except the morphology of tumor (P<0.05). Conclusion The high expression rates of MAGE-1 and MAGE-3 genes in IHCC suggests the MAGE-1 and MAGE-3gene may be a target for immunotherapy in IHCC patients.