Aberrant expression of β-catenin and its association with ΔNp63, Notch-1, and clinicopathological factors in oral squamous cell carcinoma

Gokulan Ravindran, Halagowder Devaraj

Research output: Contribution to journalArticle

19 Scopus citations

Abstract

The present study focuses on the correlation between the expression pattern of β-catenin (component of Wnt signaling), ΔNp63 (proliferation marker), and Notch 1 (transmembrane receptor) in oral squamous cell carcinoma. The study also aims to investigate the interaction between β-catenin and ΔNp63 in oral cancer. Furthermore, we also analyzed the prognostic significance of β-catenin, ΔNp63, and Notch 1 in oral squamous cell carcinoma. Immunohistochemical analysis of β-catenin, ΔNp63, and Notch 1 were done in 62 cases of oral squamous cell carcinoma. Co-immunoprecipitation analysis was done to study the possible interaction between β-catenin and ΔNp63 in oral cancer. Kaplan-Meier method was used to estimate overall and disease-free survival, and the Log-rank test was used to compare the resulting curves. Statistically significant positive correlation was found between the localization of β-catenin and the expression of ΔNp63 (p = 0. 001**, rs = 0. 427), whereas, no significant association was found between the expression pattern of β-catenin and Notch 1. Interestingly, interaction between β-catenin and ΔNp63 was observed in oral carcinoma. Moreover, β-catenin and ΔNp63 may be related to worst survival in oral carcinoma. Statistically significant positive association between localization of β-catenin and expression of ΔNp63 suggests that they might have dependent roles in maintaining the proliferation of oral carcinoma cells. In addition, the downregulated expression of Notch 1 was related to invasion and differentiation status of oral carcinoma cells. Furthermore, β-catenin and ΔNp63 may be used as independent prognostic markers of oral carcinoma. On the other hand, interaction of β-catenin with ΔNp63 may be a key event in maintaining the proliferation of oral carcinoma cells. The present study indicates that β-catenin and ΔNp63 may be used as independent prognostic markers of oral carcinoma and the interaction of β-catenin with ΔNp63 may be a crucial event in regulating proliferation and differentiation of oral carcinoma cells, which may be used as a target for therapeutic implications.

Original languageEnglish (US)
Pages (from-to)1275-1288
Number of pages14
JournalClinical Oral Investigations
Volume16
Issue number4
DOIs
StatePublished - Aug 1 2012
Externally publishedYes

Keywords

  • Notch-1
  • Oral squamous cell carcinoma
  • ΔNp63
  • β-catenin

ASJC Scopus subject areas

  • Dentistry(all)

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