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    Developmental plasticity allows outside-in immune responses by resident memory T cells

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    Author
    Fonseca, R; Beura, LK; Quarnstrom, CF; Ghoneim, HE; Fan, Y; Zebley, CC; Scott, MC; Fares-Frederickson, NJ; Wijeyesinghe, S; Thompson, EA; ...
    Date
    2020-02-17
    Source Title
    Nature Immunology
    Publisher
    NATURE PUBLISHING GROUP
    University of Melbourne Author/s
    Fonseca, Raissa
    Affiliation
    Microbiology and Immunology
    Metadata
    Show full item record
    Document Type
    Journal Article
    Citations
    Fonseca, R., Beura, L. K., Quarnstrom, C. F., Ghoneim, H. E., Fan, Y., Zebley, C. C., Scott, M. C., Fares-Frederickson, N. J., Wijeyesinghe, S., Thompson, E. A., Borges da Silva, H., Vezys, V., Youngblood, B. & Masopust, D. (2020). Developmental plasticity allows outside-in immune responses by resident memory T cells. NATURE IMMUNOLOGY, 21 (4), pp.412-+. https://doi.org/10.1038/s41590-020-0607-7.
    Access Status
    Access this item via the Open Access location
    URI
    http://hdl.handle.net/11343/254014
    DOI
    10.1038/s41590-020-0607-7
    Open Access URL
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7096285
    Abstract
    Central memory T (TCM) cells patrol lymph nodes and perform conventional memory responses on restimulation: proliferation, migration and differentiation into diverse T cell subsets while also self-renewing. Resident memory T (TRM) cells are parked within single organs, share properties with terminal effectors and contribute to rapid host protection. We observed that reactivated TRM cells rejoined the circulating pool. Epigenetic analyses revealed that TRM cells align closely with conventional memory T cell populations, bearing little resemblance to recently activated effectors. Fully differentiated TRM cells isolated from small intestine epithelium exhibited the potential to differentiate into TCM cells, effector memory T cells and TRM cells on recall. Ex-TRM cells, former intestinal TRM cells that rejoined the circulating pool, heritably maintained a predilection for homing back to their tissue of origin on subsequent reactivation and a heightened capacity to redifferentiate into TRM cells. Thus, TRM cells can rejoin the circulation but are advantaged to re-form local TRM when called on.

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