Transcriptional reprogramming during T helper cell differentiation.

Our laboratory employs reporter transgenic mice as model systems to study the transcriptional reprogramming that accompanies T helper cell differentiation. These studies demonstrate that changes in the activity of simple transcriptional elements associated with the IFN-gamma gene can recapitulate alterations in gene expression. In addition, our studies have revealed a key role for the transcription factor, CAMP response element binding protein (CREB), in the protection of differentiating T cells from apoptosis. Together, these findings further our understanding of the logic employed by T cells to alter gene expression profiles in response to differentiation signals.