The integration of T cell migration, differentiation and function

TLDR: Classic and emerging concepts are reviewed, the challenge of integrating new observations with existing T cell classification schemes are highlighted and the heuristic framework provided by viewing T cell differentiation and function first through the prism of migration is summarized.

Abstract: T cells function locally. Accordingly, T cells' recognition of antigen, their subsequent activation and differentiation, and their role in the processes of infection control, tumour eradication, autoimmunity, allergy and alloreactivity are intrinsically coupled with migration. Recent discoveries revise our understanding of the regulation and patterns of T cell trafficking and reveal limitations in current paradigms. Here, we review classic and emerging concepts, highlight the challenge of integrating new observations with existing T cell classification schemes and summarize the heuristic framework provided by viewing T cell differentiation and function first through the prism of migration.