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Article type: Research Article
Authors: Liu, C. | He, X. | Wu, X. | Wang, Z. | Zuo, W. | Hu, G.*
Affiliations: Department of Otorhinolaryngology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
Correspondence: [*] Corresponding author: G. Hu, Department of Otorhinolaryngology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, Chongqing 400016, China. Tel.: +86 23 89012945; Fax: +86 21 64085875; E-mail: [email protected].
Abstract: OBJECTIVE: This study was designed to evaluate the relation between GPx2 (glutathione peroxidase 2) expressions and clinicopathological features as well as prognosis of patients with nasopharyngeal carcinoma (NPC). METHODS: A total of 89 cases of NPC were investigated to examine the immunohistochemical expression of GPx2. Fourteen pairs of NPC and the control samples were analyzed respectively by qRT-PCR and Western blot. The correlations of GPx2 expressions with the clinicopathologic features and the prognosis of NPC patients were also analyzed. RESULTS: The expression of GPx2 in NPC tissues was elevated immunohistochemically when compared with normal nasopharyngeal tissues (P< 0.05). The mRNA expression of GPx2 in carcinoma tissues was highly elevated compared with the control tissues (P< 0.05). GPx2 protein in carcinoma tissues was also over expressed than in control tissues (P< 0.05). Also GPx2 expression was significantly higher in the late clinical stage (P= 0.02). While there was no significant association between GPx2 expression and patient age, sex, T-stage, N-stage and the metastasis. CONCLUSIONS: GPx2 may play an important role in the development of nasopharyngeal carcinoma. Furthermore, GPx2 may serve as a prognostic biomarker for NPC patient.
Keywords: Nasopharyngeal carcinoma, GPx2, prognosis
DOI: 10.3233/CBM-160542
Journal: Cancer Biomarkers, vol. 19, no. 3, pp. 335-340, 2017
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