Expression of Bex1 and NF-kBp65 in tongue squamous cell carcinoma and its significance

To investigate the expression of brain expressed X-linked gene 1(Bex1) and nuclear factor-kBp65 (NF - kBp65) in tongue squamous cell carcinoma, and its significance.

Immunohistochemistry was used to detect the expression of Bex1 and NF-kBp65 in 60 tongue squamous cell carcinoma (TSCC) tissues and adjacent normal tissues, and the relationships between Bex1, NF-kBp65 and the clinicopathological features and prognosis of patients were analyzed.

The positive expression rate of Bex1 in TSCC was 48.3% (29/60), which was significantly lower than that in adjacent normal tissues 88.3% (53/60) (χ²=22.18, P < 0.01). The positive rate of Bex1 was negatively correlated with TNM stage, and the difference was statistically significant (P < 0.05). The positive rate of 63.3%(38/60) in TSCC was significantly higher than 20% (12/60) in adjacent normal tissues (χ²=23.18, P < 0.01), the positive rate of NF-kBp65 was positively correlated with TNM stage, and the difference was statistically significant (P < 0.05). According to the Pearson correlation analysis results, the expression of Bex1 and NF-kBp65 in TSCC tissues was negatively correlated (r=-0.302, P=0.019). Kaplan-Meier survival curves showed that the survival rate of Bex1 positive patients was significantly higher than that of Bex1 negative patients.

In TSCC tissues, the low positive expression rate of Bex1 and the high positive expression rate of NF-kBp65 may promote tumor invasion and metastasis, and the negative expression of Bex1 may be related to the poor prognosis of patients.