Abstract:
:The intestinal mucosa promotes T cell responses that might be beneficial for effective mucosal vaccines. However, intestinal resident memory T (Trm) cell formation and function are poorly understood. We found that oral infection with Listeria monocytogenes induced a robust intestinal CD8 T cell response and blocking effector T cell migration showed that intestinal Trm cells were critical for secondary protection. Intestinal effector CD8 T cells were predominately composed of memory precursor effector cells (MPECs) that rapidly upregulated CD103, which was needed for T cell accumulation in the intestinal epithelium. CD103 expression, rapid MPEC formation, and maintenance in intestinal tissues were dependent on T cell intrinsic transforming growth factor β signals. Moreover, intestinal Trm cells generated after intranasal or intravenous infection were less robust and phenotypically distinct from Trm cells generated after oral infection, demonstrating the critical contribution of infection route for directing the generation of protective intestinal Trm cells.
journal_name
Immunityjournal_title
Immunityauthors
Sheridan BS,Pham QM,Lee YT,Cauley LS,Puddington L,Lefrançois Ldoi
10.1016/j.immuni.2014.03.007subject
Has Abstractpub_date
2014-05-15 00:00:00pages
747-57issue
5eissn
1074-7613issn
1097-4180pii
S1074-7613(14)00110-1journal_volume
40pub_type
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