Conclusion
ZEB1 is highly expressed in NSCLC tissues and FOXO3a is lowly, and they collaborate to promote NSCLC infiltration and metastasis.
Methods
Total of 130 pairs of NSCLC tumor tissue and adjacent normal tissue were collected from June 2013 to June 2015 in Cangzhou Central Hospital. The expression of ZEB1 and FOXO3a protein was detected by immunohistochemistry and Western blot, and mRNA by qPCR. We analyzed the relationship between clinical data of NSCLC and gene expression of ZEB1 and FOXO3a.
Objective
The research was aimed to study the expression of ZEB1 and FOXO3a in NSCLC tissue, and to explore the effect of its expression on infiltration/metastasis of NSCLC.
Results
The expression of ZEB1 protein in NSCLC tissues was significantly higher than that in adjacent normal tissue (P<0.05), but the FOXO3a was just opposite (P<0.05). The expression of ZEB1 and FOXO3a protein was significantly correlated with tumor size, differentiation degree, lymph node metastasis, distal metastasis and TNM staging (P<0.05). The expression of ZEB1 protein was significantly increased and the expression of FOXO3a protein was significantly decreased in NSCLC patients with lymph node metastasis or distant metastasis (P<0.05). The 2-year survival rate of patients with high expression of ZEB1 or low expression of FOXO3a was significantly lower than that of NSCLC patients with low expression of FOXO3a (P<0.05). Pearson analysis showed that the expression of ZEB1 mRNA in NSCLC was negatively correlated with FOXO3a mRNA expression (r = -0.705, P<0.05).