I am currently writing a review article about the epigenetic changes involved in the conversion of Tregs into Th17 T cells. I understand that acetylated FoxP3 transcriptional proteins block the IL-2 gene and RORgammt promoter to render Tregs anergic and prevent the formation of the Th17 T cell phenotype. I also understand that histone deacetylases remove FoxP3 acetylation allowing for that Treg to be converted to a Th17 T cell.