Project description:ra15-05_tt1 - tt1-gr - Discover TT1 donwstream targets - An inducible line carrying TT1, an early marker of endothelium development, fused to the rat glucocorticoid receptor (GR), that allows a dexamethasone (DEX)-mediated posttranslational induction of the proteins, has been created. Siliques have been first treated with cycloheximide, an inhibitor of protein synthesis, to prevent indirect transcriptional effects of the inducible TT1 transcription factor. RNA profiling experiments (CATMA microarrays) will be then conducted before and after DEX induction of TT1. These experiments will unveil direct downstream target genes of the TT1 transcription factor.