Fig. 6: CDX2 transactivates the expression of PTEN by binding to the PTEN promoter in colon cancer cells.

a, b The activities of the PTEN full promoter reporter construct and the truncated ones in CDX2-overexpression Lovo (a) and Caco-2 (b) cells using the dual-luciferase assay. c Schematic representation of the CDX2 putative binding sites (P1–P4) in PTEN promoter region. d, e Enrichment level of the CDX2- binding putative site in the PTEN promoter region in Lovo (d) and Caco-2 (e) cells determined by the qChIP assay. All data are presented as the mean ± SD from three independent experiments. *P < 0.05.