TY - JOUR
T1 - CD4+ resident memory T cells dominate immunosurveillance and orchestrate local recall responses
AU - Beura, Lalit K.
AU - Fares-Frederickson, Nancy J.
AU - Steinert, Elizabeth M.
AU - Scott, Milcah C.
AU - Thompson, Emily A.
AU - Fraser, Kathryn A.
AU - Schenkel, Jason M.
AU - Vezys, Vaiva
AU - Masopust, David
N1 - Publisher Copyright:
© 2019 Beura et al.
PY - 2019/5/1
Y1 - 2019/5/1
N2 - This study examines the extent to which memory CD4+ T cells share immunosurveillance strategies with CD8+ resident memory T cells (TRM). After acute viral infection, memory CD4+ T cells predominantly used residence to survey nonlymphoid tissues, albeit not as stringently as observed for CD8+ T cells. In contrast, memory CD4+ T cells were more likely to be resident within lymphoid organs than CD8+ T cells. Migration properties of memory-phenotype CD4+ T cells in non-SPF parabionts were similar, generalizing these results to diverse infections and conditions. CD4+ and CD8+ TRM shared overlapping transcriptional signatures and location-specific features, such as granzyme B expression in the small intestine, revealing tissue-specific and migration property–specific, in addition to lineage-specific, differentiation programs. Functionally, mucosal CD4+ TRM reactivation locally triggered both chemokine expression and broad immune cell activation. Thus, residence provides a dominant mechanism for regionalizing CD4+ T cell immunity, and location enforces shared transcriptional, phenotypic, and functional properties with CD8+ T cells.
AB - This study examines the extent to which memory CD4+ T cells share immunosurveillance strategies with CD8+ resident memory T cells (TRM). After acute viral infection, memory CD4+ T cells predominantly used residence to survey nonlymphoid tissues, albeit not as stringently as observed for CD8+ T cells. In contrast, memory CD4+ T cells were more likely to be resident within lymphoid organs than CD8+ T cells. Migration properties of memory-phenotype CD4+ T cells in non-SPF parabionts were similar, generalizing these results to diverse infections and conditions. CD4+ and CD8+ TRM shared overlapping transcriptional signatures and location-specific features, such as granzyme B expression in the small intestine, revealing tissue-specific and migration property–specific, in addition to lineage-specific, differentiation programs. Functionally, mucosal CD4+ TRM reactivation locally triggered both chemokine expression and broad immune cell activation. Thus, residence provides a dominant mechanism for regionalizing CD4+ T cell immunity, and location enforces shared transcriptional, phenotypic, and functional properties with CD8+ T cells.
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U2 - 10.1084/jem.20181365
DO - 10.1084/jem.20181365
M3 - Article
C2 - 30923043
AN - SCOPUS:85065548071
SN - 0022-1007
VL - 216
SP - 1214
EP - 1229
JO - Journal of Experimental Medicine
JF - Journal of Experimental Medicine
IS - 5
ER -