晚期胃癌危重患者预警蛋白质指纹不同表达时伴随指纹的分析

目的 分析晚期胃癌危重患者预警蛋白质(LGT)指纹不同表达及演变状态下,其伴随指纹的分布特点,构建其指纹库.方法 采用表面增强激光解析/电离飞行时间质谱(SELDI-TOF-MS)技术、CMl0蛋白质芯片技术对入院接受手术的81例晚期胃癌患者,术前及术后1年各检测1次LCT指纹表达,根据两次检测情况分组,A组:IGT指纹由阴性向阳性演变组(25例);B组:LGT指纹由阳性向阴性演变组(15例);C组:LGT指纹持续阴性组(29例);D组:LGT指纹持续阳性组(12例).另选择12例肿瘤患者血清样本,间隔1周各检测1次,再选择5例肿瘤患者取前后2 d血清各榆测1次,以此作为影响凶素对照组.采用Biomarker Wizard 3.1软件比较LGT不同表达及演变状态下差异蛋白质组指纹的差异.结果 去除对照组中影响指纹后,A组:质荷比(M/Z)11473、11821、11664、11409、11552和11947上调.无下调的指纹.B组:M/Z878、861、874、917和3264 上调,M/Z6523、11509、11669、11413、11351和6483下调.C组和D组无有统计学意义的差异蛋白质指纹.结论 SELDI-TOF-MS技术榆测晚期胃癌患者血清捕获的M/Z 11473、11821、11664、11409、11552和11947蛋白质指纹上调,可视为晚期胃癌患者LGT指纹由阴性向阳性演变时LGT蛋白质指纹亚型;M/Z 11509、11669、11413、11351蛋白质指纹下调可视为胃癌患者LGT指纹由阳性向阴性演变时LGT蛋白质指纹亚型;M/Z 878、861、874、917和3264蛋白质指纹上调,M/Z 6523和6483蛋白质指纹下调,可视为胃癌患者LGT指纹由阳性向阴性演变时伴随的相关蛋白质组指纹;而当晚期胃癌患者LGT指纹持续阴性或者持续阳性时无相关的差异蛋白质指纹.

Abstract：

Objective To analyze the disposition characteristic of LGT fingerprints and the related fingerprints for advanced gastric carcinoma patients when the LGT fingerprints changing. Methods SELDI and CM10 protein chip was used to detect the serum protein fingerprints of 81 cased of advanced gastric cancer patients. After 1 year follow-up, all the patients were detected by SELDI again. According to the expression condition of LGT fingerprints, the patients were divided into 4 groups: A group(LGT changing from negative to positive) 25 cases, B group (LGT changing from positive to negative) 15 cases, C group (LGT fingerprints keeping negative) 29 cases and D group (LGT fingerprints keeping positive) 12 cases. The influencing factor should be rejected. And the remaining fingerprints were LGT fingerprints' subtypes and therelated fingerprints. The different proteomic fingerprints were analyzed by Biomarker Wizard 3.1 Software.Results After rejecting the influencing fingerprints, the up-regulation fingerprints in A group were 11473, 11821, 11664, 11409, 11552 and 11947 (M/Z), and no down-regulation fingerprints. In B group, 3264 was upregulation, and 6523, 11509, 11669, 11413, 11351 and 6483 were down-regulation. In C and D group, there was not statistically differential protein fingerprint. Conclusion M/Z up-regulating fingerprints including 11473, 11821, 11664, 11409, 11552 and 11947 can be regarded as the subtype of LGT when it changing from negative to positive; down-regulating including 11509, 11669, 11413 and 11351 can be regarded as the subtype of LGT when it changing from positive to negative; 3264 up-regulating and 6523 and 6483 downregulating can be regarded as the related fingerprints when LGT changing from positive to negative; and when LGT keeping negative or positive in patients with advanced gastric cancer, there was no differential protein fingerprints.

Analysis on proteomic fingerprints of the advanced gastric cancer patients when LGT fingerprints changing

Objective To analyze the disposition characteristic of LGT fingerprints and the related fingerprints for advanced gastric carcinoma patients when the LGT fingerprints changing. Methods SELDI and CM10 protein chip was used to detect the serum protein fingerprints of 81 cased of advanced gastric cancer patients. After 1 year follow-up, all the patients were detected by SELDI again. According to the expression condition of LGT fingerprints, the patients were divided into 4 groups: A group(LGT changing from negative to positive) 25 cases, B group (LGT changing from positive to negative) 15 cases, C group (LGT fingerprints keeping negative) 29 cases and D group (LGT fingerprints keeping positive) 12 cases. The influencing factor should be rejected. And the remaining fingerprints were LGT fingerprints' subtypes and therelated fingerprints. The different proteomic fingerprints were analyzed by Biomarker Wizard 3.1 Software.Results After rejecting the influencing fingerprints, the up-regulation fingerprints in A group were 11473, 11821, 11664, 11409, 11552 and 11947 (M/Z), and no down-regulation fingerprints. In B group, 3264 was upregulation, and 6523, 11509, 11669, 11413, 11351 and 6483 were down-regulation. In C and D group, there was not statistically differential protein fingerprint. Conclusion M/Z up-regulating fingerprints including 11473, 11821, 11664, 11409, 11552 and 11947 can be regarded as the subtype of LGT when it changing from negative to positive; down-regulating including 11509, 11669, 11413 and 11351 can be regarded as the subtype of LGT when it changing from positive to negative; 3264 up-regulating and 6523 and 6483 downregulating can be regarded as the related fingerprints when LGT changing from positive to negative; and when LGT keeping negative or positive in patients with advanced gastric cancer, there was no differential protein fingerprints.