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23 February 2020 : Clinical Research  

High Expression of Methylenetetrahydrofolate Dehydrogenase 2 (MTHFD2) in Esophageal Squamous Cell Carcinoma and its Clinical Prognostic Significance

Huan He1BCDEF, Peng-Cheng Li1BF, Wei Jia2BF, Bing Hu2AG, Chu-Shu Ji12A*

DOI: 10.12659/MSM.920259

Med Sci Monit 2020; 26:e920259

Abstract

BACKGROUND: Recently, targeted therapy for malignant tumors has developed rapidly, but there is still no effective targeted therapy for advanced esophageal squamous cell carcinoma (ESCC). Methylenetetrahydrofolate dehydrogenase 2 (MTHFD2) is a key enzyme involved in folate metabolism and is closely related to the proliferation in many cancers. However, few studies have explored the expression of MTHFD2 in ESCC and its prognostic significance.

MATERIAL AND METHODS: The expressions of MTHFD2, ki67, and p53 in ESCC tissues were detected by immunohistochemistry. Further, MTHFD2 expression level in ESCC and its correlations with patients’ clinicopathological characteristics and survival prognosis were investigated.

RESULTS: The enhanced expression of MTHFD2 was observed in ESCC specimens compared with adjacent normal tissue. The increased expression of MTHFD2 was closely related to pathological grading (P=0.020) and tumor TNM stage (P=0.019). In addition, patients with high expression of MTHFD2 had worse survival than those with low MTHFD2 expression (P<0.05). High expression of MTHFD2 in ESCC tissues was often associated with high expression of ki67 and p53 (P<0.05).

CONCLUSIONS: MTHFD2 had significantly enhanced expression in ESCC tissues and was associated with pathological grading and TNM stage. Taken together, high expression of MTHFD2 was an independent unfavorable prognostic parameter for overall survival (OS) of ESCC patients, suggesting that MTHFD2 might be a potential therapeutic target for ESCC in the future.

Keywords: Esophageal Neoplasms, Ki-67 Antigen, Methenyltetrahydrofolate Cyclohydrolase, Prognosis, Tumor Suppressor Protein p53, Aged, Aminohydrolases, esophageal squamous cell carcinoma, Kaplan-Meier Estimate, Methylenetetrahydrofolate Dehydrogenase (NADP), Middle Aged, Multifunctional Enzymes, Multivariate Analysis

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