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Terminally differentiated plasma cells reside in multiple tissues to contribute to local immunity. Nutt and colleagues examined tissue-specific differences in long-lived plasma cell lifespan and function, identifying unique transcriptional attributes in addition to the core plasma cell program.
Lenardo and colleagues identify a new human genetic disease, GISELL, whereby ceramide lipid homeostasis is disrupted, thereby altering T cell longevity. Deficiency of GTPase of the immunity-associated protein 5 (GIMAP5) in patients leads to cellular senescence, immunodeficiency and early mortality.
Löhning and colleagues identify an alternative promoter for the Il1rl1 gene that drives IL-33 receptor expression in cytotoxic T cells and T-helper 1 cells
TCF1+ ‘stem-like’ CD4+ T cells have a capacity for self-renewal and effector differentiation when required. Here the authors show how these stem-like T cells mediate allograft rejection via the replenishment of their effector differentiation.