Sun Guiying, Ye Hua, Wang Xiao, Cheng Lin, Ren Pengfei, Shi Jianxiang, Dai Liping, Wang Peng, Zhang Jianying
College of Public Health, Zhengzhou University, Zhengzhou, China.
State Key Laboratory of Esophageal Cancer Prevention & Treatment, Henan Key Laboratory of Tumor Epidemiology, Zhengzhou University, Zhengzhou, China.
Oncoimmunology. 2020 Sep 9;9(1):1814515. doi: 10.1080/2162402X.2020.1814515.
The purpose of this study was to identify novel autoantibodies against tumor-associated antigens (TAAbs) and explore the optimal diagnosis model based on the protein chip for detecting esophageal squamous cell carcinoma (ESCC). The human protein chip based on cancer-driving genes was customized to discover candidate TAAbs. Enzyme-linked immunosorbent assay was applied to verify and validate the expression levels of candidate TAAbs in the training cohort (130 ESCC and 130 normal controls) and the validation cohort (125 ESCC and 125 normal controls). Logistic regression analysis was adopted to construct the diagnostic model based on the expression levels of autoantibodies with diagnostic value. Twelve candidate autoantibodies were identified based on the protein chip according to the corresponding statistical methods. In both the training cohort and validation cohort, the expression levels of 10 TAAbs (GNA11, PTEN, P53, SRSF2, GNAS, ACVR1B, CASP8, DAXX, PDGFRA, and MEN1) in ESCC patients were higher than that in normal controls. The panel consisting of GNA11, ACVR1B and P53 demonstrated favorable diagnostic power. The sensitivity, specificity and accuracy of the model in the train cohort and the validation cohort were 71.5%, 93.8%, 79.6% and 77.6%, 81.6%, 70.8%, respectively. In either cohort, there was no correlation between positive rate of the autoantibody panel and clinicopathologic features for ESCC patients. Protein chip technology is an effective method to identify novel TAAbs, and the panel of 3 TAAbs (GNA11, ACVR1B, and P53) is promising for distinguishing ESCC patients from normal individuals.
本研究旨在鉴定针对肿瘤相关抗原的新型自身抗体(TAAbs),并探索基于蛋白质芯片检测食管鳞状细胞癌(ESCC)的最佳诊断模型。定制基于癌症驱动基因的人类蛋白质芯片以发现候选TAAbs。应用酶联免疫吸附测定法在训练队列(130例ESCC患者和130例正常对照)和验证队列(125例ESCC患者和125例正常对照)中验证和确认候选TAAbs的表达水平。采用逻辑回归分析基于具有诊断价值的自身抗体表达水平构建诊断模型。根据相应统计方法基于蛋白质芯片鉴定出12种候选自身抗体。在训练队列和验证队列中,ESCC患者中10种TAAbs(GNA11、PTEN、P53、SRSF2、GNAS、ACVR1B、CASP8、DAXX、PDGFRA和MEN1)的表达水平均高于正常对照。由GNA11、ACVR1B和P53组成的组合显示出良好的诊断能力。该模型在训练队列和验证队列中的敏感性、特异性和准确性分别为71.5%、93.8%、79.6%和77.6%、81.6%、70.8%。在任一队列中,ESCC患者自身抗体组合的阳性率与临床病理特征之间均无相关性。蛋白质芯片技术是鉴定新型TAAbs的有效方法,3种TAAbs(GNA11、ACVR1B和P53)的组合有望区分ESCC患者和正常个体。
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