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Expression of WW domain-containing protein 2 is correlated with pathological grade and recurrence of glioma


1 Department of Neurosurgery, Affiliation Hospital of Xuzhou Medical College, Xuzhou 221002, China
2 Institute of Nervous System Diseases, Lab of Neurosurgery, Xuzhou Medical College, Xuzhou 221002, China

Correspondence Address:
Ru-Tong Yu,
Department of Neurosurgery, Affiliated Hospital of Xuzhou Medical College, Xuzhou 221002
China
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Source of Support: None, Conflict of Interest: None

Objective: WW domain.containing protein 2. (WWP2) is an E3 ubiquitin ligase, which belongs to the NEDD4.like protein family. Recently, it is reported to play a key role in tumorigenesis and development of tumors such as prostate and lung cancer. However, there has been not related report on glioma until now. The aim of this study is to detect the expression of WWP2 and analyze its correlation to the pathological grade and tumor recurrence in patients with glioma. Materials and Methods: Western blot and immunohistochemistry were separately used to detect the expression of WWP2 protein in 31 brain glioma tissue samples and 80 brain glioma paraffin specimens. The method of Kaplan–Meier was used to analyze the correlation between the WWP2 expression and glioma recurrence. Results: The protein expression level of WWP2 in glioma tissue was significantly higher than that in nontumorous brain tissue (P < 0.05), and the protein expression level of WWP2 in high-grade glioma (Grade III–IV) was significantly higher than that in low-grade glioma (Grade I–II) (P < 0.05). Kaplan–Meier analysis indicated that the patients with high WWP2 expression had significantly shorter tumor recurrence time than the patients with low WWP2 expression (P < 0.05). Conclusion: Our study suggests that WWP2 may play a role in the genesis and development of glioma; it may be a potential biomarker to predict pathological grade and tumor recurrence in patients with glioma.


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