The epigenetic control of stemness in CD8 + T cell fate commitment
Epigenetic modulation of effector T cells
The epigenetic states and associated chromatin dynamics underlying the initiation and maintenance of memory and effector CD8
T cells are poorly understood. Pace
found that mice lacking the histone H3 lysine 9 methyltransferase Suv39h1 had markedly reduced antigen-specific effector CD8
T cell responses to
infection (see the Perspective by Henning
). Instead, CD8
T cells in these mice were enriched for genes associated with naïve and memory signatures and showed enhanced memory potential and increased survival capacity. Thus, Suv39h1 marks chromatin through H3K9me3 deposition and silences memory and stem cell programs during the terminal differentiation of effector CD8
, this issue p.
; see also p.