Abstract:
:Memory T cells protect hosts from pathogen reinfection, but how these cells emerge from a pool of antigen-experienced T cells is unclear. Here, we show that mice lacking the transcription factor Foxo1 in activated CD8+ T cells have defective secondary, but not primary, responses to Listeria monocytogenes infection. Compared to short-lived effector T cells, memory-precursor T cells expressed higher amounts of Foxo1, which promoted their generation and maintenance. Chromatin immunoprecipitation sequencing revealed the transcription factor Tcf7 and the chemokine receptor Ccr7 as Foxo1-bound target genes, which have critical functions in central-memory T cell differentiation and trafficking. These findings demonstrate that Foxo1 is selectively incorporated into the genetic program that regulates memory CD8+ T cell responses to infection.
journal_name
Immunityjournal_title
Immunityauthors
Kim MV,Ouyang W,Liao W,Zhang MQ,Li MOdoi
10.1016/j.immuni.2013.07.013subject
Has Abstractpub_date
2013-08-22 00:00:00pages
286-97issue
2eissn
1074-7613issn
1097-4180pii
S1074-7613(13)00321-Xjournal_volume
39pub_type
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