We aim to dissect the epigenetic and transcriptional mechanisms that shape T cell lineage specification during development in the thymus and in the periphery upon antigen (microbial, viral) encounter. Aberrant expression of transcription and epigenetic factors can result in inflammation, autoimmunity or cancer. We are using gene deficient mouse models, multiparameter Flow Cytometry, molecular biology assays and next generation sequencing technologies to elucidate the regulatory information in cells of interest (transcriptome, epigenome, transcription factor occupancy).