Original Article
Expression and clinical significance of melanoma antigen-encoding gene A1 protein in esophageal squamous cell carcinoma
Zhu Chengxiang, Yu Yue, Fang Haisheng, Huang Chenjun, Zhao Fei, Zhou Yue, Li Jun, Li Qifan, Zhuang Yu, Wang Wei
Published 2019-01-05
Cite as Chin J Postgrad Med, 2019,42(1): 37-41. DOI: 10.3760/cma.j.issn.1673-4904.2019.01.010
Abstract
ObjectiveTo investigate the expression of melanoma antigen-encoding gene (MAGE) A1 protein in esophageal squamous cell carcinoma, and explore its correlation with the clinicopathological factors and prognosis.
MethodsA retrospective analysis was performed on 197 patients with esophageal squamous cell carcinoma who accepted radical surgical treatment from January 2006 to December 2012. The expressions of MAGEA1 protein in these specimens of cancer tissue and cancer adjacent tissue were detected by immunohistochemistry with tissue microarray technology.
ResultsMAGEA1 protein was expressed in cytoplasm and nucleus of tumor cells. The positive expression rate of MAGEA1 protein in cancer tissue was significantly higher than that in cancer adjacent tissue: 73.6% (145/197) vs. 5.6% (11/197), and there was statistical difference (P<0.01). The positive expression of MAGEA1 protein had no correlations with sex, age, history of smoking/drinking, family history of upper gastrointestinal cancer, depth of tumor invasion, lymph node metastasis, tumor differentiation, location and TNM stage (P>0.05). Kaplan-Meier survival analysis result showed that the 5-year survival rate in patients with MAGEA1 protein positive expression was significantly lower than that in patients with MAGEA1 protein negative expression (37.2% vs. 53.8%), and there was statistical difference (P = 0.018). Multivariate analysis result showed that MAGEA1 protein positive expression was an independent predictor of prognosis in esophageal squamous cell carcinoma patients (HR = 1.91, 95% CI 1.22 to 2.98, P = 0.004).
ConclusionsThe expression of MAGEA1 protein is abundant in esophageal squamous cell carcinoma, and is related to worse clinical outcome. MAGEA1 protein could be a candidate target for tumor immunotherapy.
Key words:
Esophageal neoplasms; Prognosis; Melanoma antigen-encoding gene A1 protein; Cancer-testis antigen
Contributor Information
Zhu Chengxiang
Department of Thoracic Surgery, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
Yu Yue
Department of Thoracic Surgery, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
Fang Haisheng
Department of Pathology, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
Huang Chenjun
Department of Thoracic Surgery, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
Zhao Fei
Department of Thoracic Surgery, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
Zhou Yue
Department of Thoracic Surgery, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
Li Jun
Department of Thoracic Surgery, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
Li Qifan
Department of Thoracic Surgery, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
Zhuang Yu
Department of Thoracic Surgery, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
Wang Wei
Department of Thoracic Surgery, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China