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26 July 2018 : Laboratory Research  

Upregulation of CXCR7 Is Associated with Poor Prognosis of Prostate Cancer

Jihua Yang1CDE, Hao Tang2ABC, Jingyu Huang3CDE, Huaijie An4ABFG

DOI: 10.12659/MSM.906180

Med Sci Monit 2018; 24: LBR5185-5191

Abstract

BACKGROUND: Prostate cancer (PCa) is a prevalent cancer in males. CXCR7 exhibits oncogenic actions in various cancers. The aim of our study was to explore the clinical significance of CXCR7 in patients with PCa.

MATERIAL AND METHODS: QRT-PCR was used to detect the expression level of CXCR7 in PCa tissues. The relationship between CXCR7 expression and clinicopathologic parameters was evaluated by chi-square test. Kaplan-Meier survival curve was used for the survival analysis of patients. Cox regression analyses were performed to assess the potential of CXCR7 as a prognosis biomarker for PCa patients. We performed MTT and Transwell assays to determine the effect of CXCR7 on proliferative and migratory abilities of PCa cells, respectively.

RESULTS: CXCR7 was upregulated in PCa tissues (P<0.05) and was correlated with PSA (P=0.023), differentiation (P=0.022), and lymph node metastasis (P=0.018). The results of MTT and Transwell assays demonstrated that inhibition of CXCR7 suppressed PCa cells growth and migration. Additionally, high CXCR7 level predicted poor overall survival (log rank test, P=0.019). CXCR7 was a valuable prognostic biomarker for PCa patients (HR=2.271, 95%CI=1.093–4.719, P=0.028).

CONCLUSIONS: CXCR7 is an oncogene in PCa that can promote aggressive progression of PCa through enhancing proliferation and migration of the tumor cells. CXCR7 is an independent biomarker for the prognosis of PCa.

Keywords: Genes, vif, Prognosis, Prostatic Neoplasms

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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750