Fig. 4.

Wnt/β-catenin signaling pathway was activated in NSE-overexpressing SCLC cells. (A) Signal pathway enrichment investigation between high NSE expression group and low NSE expression group was enriched by GSEA. (B, C) NSE overexpression activated Wnt/β-catenin pathway and upregulated the expression of downstream target genes (c-Myc and Slug). The protein (B) and mRNA (C) expression of β-catenin, c-Myc and Slug in NSE-overexpressing H446 cells were tested by western blotting and qRT-PCR, respectively. (D, E) Silencing NSE repressed Wnt/β-catenin signaling pathway. The protein (D) and mRNA (E) expression of β-catenin, c-Myc and Slug in NSE-silencing H69 cells. Results was representative of three independent experiments. Data are presented as mean values ± SD. *p < 0.05 using the two-sided Student's t-test. ns: no significance.