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Chinese Journal of Stomatological Research(Electronic Edition) ›› 2015, Vol. 09 ›› Issue (05): 372-378. doi: 10.3877/cma.j.issn.1674-1366.2015.05.004

Special Issue:

• Basic Science Research • Previous Articles     Next Articles

Expression and correlation of WWP2, PTEN and p70S6K in oral squamous cell carcinoma

Suyun Zeng1, Wei Liao2, Zhiliang Le3, Cuicui Zhang4, Xin Zhao5, Jianguang Wang1,()   

  1. 1. Department of Oral & Maxillofacial Surgery, Sun Yat-sen University, Guangzhou 510120, China
    2. Department of Oral, 421 Hospital of PLA, Guangzhou 510318, China
    3. The Third Affiliated Hospital of Southem Medical University, Guangzhou 510318, China
    4. Stomatology Hospital of Guangzhou Medical University, Guangzhou 510150, China
    5. The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou 510150, China
  • Received:2015-07-26 Online:2015-10-01 Published:2015-10-01
  • Contact: Jianguang Wang
  • About author:
    Corresponding author: Wang Jianguang, Email: , Tel: 020-81332425

Abstract:

Objective

To investigate the expression and correlation of WW domain-containing protein 2 (WWP2) , phophatase and tensinhomolog deleted on chromosome 10 (PTEN) and p70 ribosomal protein S6 kinase (p70S6K) in patients with oral squamous cell carcinoma (OSCC) .

Methods

Immunohistochemical staining method was used to detect the expression of WWP2, PTEN and p70S6K in the biopsy mucosa tissues from 54 cases of OSCC, 20 cases of oral leukoplakia and 12 cases of normal mucosa. SPSS 16.0 software was used for Kruskal Wallis test, Chi-square test, Fisher′s exact test and spearman rank correlation analysis.

Results

The strong expression rates of WWP2 and p70S6K were 68.52% and 75.93% in OSCC respectively, which were significantly higher than those in other groups (P<0.05) , including oral leukoplakia (40% and 45%) , and normal mucosa (33.33% and 25%) (P<0.05) . The strong expression rate of PTEN in OSCC was 48.15%, which was significantly lower than that in other groups including oral leukoplakia (85%) and normal mucosa (91.67%) . In all of these tissues, the negative correlations were found between the expression of WWP2 and PTEN (r = -0.236, P = 0.028) as well as PTEN and p70S6K (r = -0.301, P = 0.005) . In contrast, the positive correlations were found between the expression of WWP2 and p70S6K (r = 0.315, P = 0.003) . The expression of WWP2 was correlated with clinical stage and p70S6K was correlated with pathological grade age and lymph node metastasis in OSCC.

Conclusion

The expressions of WWP2, PTEN and p70S6K were closely related to the occurrence and development of OSCC, they may play an important role in the pathogenesis of OSCC.

Key words: Mouth neoplasms, Carcinoma, squamous cell, Oral leukoplakia, WWP2, PTEN, p70S6K

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