Expression patterns of NKG2A, KIR, and CD57 define a process of CD56dim NK-cell differentiation uncoupled from NK-cell education

Natural killer (NK) cells are lymphocytes of the innate immune system that, following differentiation from CD56(bright) to CD56(dim) cells, have been thought to retain fixed functional and phenotypic properties throughout their lifespan. In contrast to this notion, we here show that CD56(dim) NK cells continue to differentiate. During this process, they lose expression of NKG2A, sequentially acquire inhibitory killer cell inhibitory immunoglobulin-like receptors and CD57, change their expression patterns of homing molecules, and display a gradual decline in proliferative capacity. All cellular intermediates of this process are represented in varying proportions at steady state and appear, over time, during the…

• ÅW
  Åke Wiberg Stiftelse
• DF
  Deutsche Forschungsgemeinschaft
• RS
  Royal Swedish Academy of Sciences
• SF
  Stiftelsen för Strategisk Forskning
• C
  Cancerfonden
• KI
  Karolinska Institutet
• V
  Vetenskapsrådet