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Overexpression of Coiled-Coil Domain-Containing Protein 34 (CCDC34) and its Correlation with Angiogenesis in Esophageal Squamous Cell Carcinoma

Dan-Dan Hu, Peng-Cheng Li, Yi-Fu He, Wei Jia, Bing Hu

(Department of Medical Oncology, Anhui Provincial Hospital, Anhui Medical University, Hefei, Anhui, China (mainland))

Med Sci Monit 2018; 24:698-705

DOI: 10.12659/MSM.908335

BACKGROUND: The coiled-coil domain-containing proteins have been shown to have a series of functions in biological synthesis. Recent studies have found that CCDC34 is highly expressed in bladder cancer, but the underlying molecular mechanisms still remain unclear. Therefore, we performed the present study to assess the expression of the coiled-coil domain-containing protein 34 (CCDC34) in esophageal squamous cell carcinoma (ESCC) patients. We also explored the relationships between CCDC34 expression and clinicopathologic characteristics, tumor angiogenesis, and prognosis.
MATERIAL AND METHODS: We detected the expressions of CCDC34, VEGF, and MVD by immunohistochemical technique in 100 cases of ESCC and 80 cases of corresponding paracarcinomatous normal tissues. The relationship between CCDC34 expression and clinicopathologic characteristics, tumor angiogenesis, and prognosis were also explored.
RESULTS: The expression of CCDC34 protein was obviously increased in ESCC tissues, which was significantly correlated with sex (p=0.038), TNM stage (p=0.003), and lymphatic metastasis (p=0.024). In addition, we found that the expression of CCDC34 was an independent prognostic factor for ESCC patients. The overexpression of CCDC34 protein in ESCC was associated with tumor progression, angiogenesis, and poor survival.
CONCLUSIONS: Our results demonstrate that CCDC34 is overexpressed in ESCC and can be used as an independent parameter for indicating the poor prognosis of ESCC patients, suggesting that CCDC34 might be a new potential therapeutic target for ESCC patients in the future.

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