Expression of sodium-glucose cotransporter 1 (SGLT1) mRNA after siRNA-induced knockdown of different transcription factors. Differentiated Caco-2 cells were transfected with different siRNAs with Lipofectamine 2000 plus silenceMag siRNA delivery reagent for 72 h and then used to quantify mRNA levels of SGLT1 and GAPDH genes. Each bar represents the mean ± SE of 3 separate trials. CDX2, caudal-type homeobox protein-2; DBP, D-box-binding proline- and acid-rich basic region leucine zipper (PAR bZIP) transcription factor; FOXO1, forkhead box protein O1; GATA4, GATA-binding protein-4; SHP, small heterodimer partner; si, siRNA. *P < 0.05, significantly different from siControl.