Glucagon-like peptide-1 promotes DNA synthesis, activates phosphatidylinositol 3-kinase and increases transcription factor pancreatic and duodenal homeobox gene 1 (PDX-1) DNA binding activity in beta (INS-1)- cells. - Buteau,J.; Roduit,R.; Susini,S.; Prentki,M. (Diabetologia, 1999)