目的:观察胰岛素样生长因子1受体(IGF-1R)和血管内皮细胞生长因子受体2(VEGFR2)蛋白在结直肠癌组织中的表达,并探讨其临床意义.方法:选择2011年1月-2012年12月在我院行手术治疗的结直肠癌患者98例,收集其肿瘤组织和癌旁组织,采用免疫组化链霉菌抗生物素蛋白-过氧化物酶连接法检测其IGF-1R和VEGFR2蛋白的表达水平,采用逆转录聚合酶链反应法检测两者mRNA的表达水平;考察IGF-1R和VEGFR2蛋白表达与结直肠癌患者临床病理特征的相关性,以及其对术后辅助化疗患者4年无疾病生存率的影响.结果:结直肠癌患者肿瘤组织中IGF-1R和VEGFR2蛋白的阳性表达率分别为66.3％和60.2％,而癌旁组织中均未见其表达,组间比较差异均有统计学意义(P0.05),而与肿瘤组织学分级、浸润深度和有无淋巴结转移有关(P0.05),而与肿瘤部位、组织学分级、浸润深度、有无淋巴结转移和脉管癌栓形成有关(P0.05);but it was associated with the histological grading,depth of invasion and lymph node metastasis(P0.05),but it was associated with tumor location,histological grading,depth of invasion,lymph node metastasis, and formation of vascular tumor thrombus(P<0.05). Among 98 colorectal cancer patients,14 patients didn't underwent chemothera-py after surgery;and 4-year disease-free survival rate of other 84 patients was 76.2％(64/84). Four-year disease-free survival rates of TGF-1R protein negative expression and VEGFR2 protein negative expression patients(82.8％,78.8％)were significantly higher than those of positive expression patients(72.7％,74.5％),with statistical significance(P<0.05). The multiple factor Logistic regression analysis was used to correct gender,age,histological grading,tumor location,depth of invasion,lymph node metastasis,and forma-tion of vascular tumor thrombus;the expression of IGR-1R and VEGFR2 protein were still associated with 4-year disease-free survival rate [adjusted OR were 2.31,2.15;95％CI were(0.57,4.15),(0.45,4.03);P<0.05]. CONCLUSIONS:The expression of IGF-1R, VEGFR2 protein and mRNAs increase significantly in colorectal cancer tissue;the protein expression is associated with histological grading,depth of invasion,lymph node metastasis and the prognosis of postoperative assisted chemotherapy patients. Their examina-tion can provide reference for target therapy for colorectal cancer patients.
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