PD-1<sup>+</sup> Tcf1<sup>+</sup> CD8<sup>+</sup> T cells from established chronic infection can form memory while retaining a stableimprint of persistent antigen exposure.

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State: Public
Version: Final published version
License: CC BY-NC-ND 4.0
Serval ID
serval:BIB_2783DEBAC783
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
PD-1<sup>+</sup> Tcf1<sup>+</sup> CD8<sup>+</sup> T cells from established chronic infection can form memory while retaining a stableimprint of persistent antigen exposure.
Journal
Cell reports
Author(s)
Charmoy M., Wyss T., Delorenzi M., Held W.
ISSN
2211-1247 (Electronic)
Publication state
Published
Issued date
07/09/2021
Peer-reviewed
Oui
Volume
36
Number
10
Pages
109672
Language
english
Notes
Publication types: Journal Article
Publication Status: ppublish
Abstract
Virus-specific PD1 <sup>+</sup> Tcf1 <sup>+</sup> memory-like CD8 <sup>+</sup> T cells (T <sub>ML</sub> s) maintain the CD8 <sup>+</sup> T cell response during chronic viral infection. However, the fate of these cells following cessation of persistent antigen exposure has been unclear. Here, we find that T <sub>ML</sub> s persist upon transfer into antigen-free hosts and form memory following recall stimulation. Phenotypic, functional, and transcriptome analyses show that T <sub>ML</sub> -derived memory cells resemble those arising in response to acute, resolved infection, but they retain features of chronically stimulated cells, including elevated PD-1 and Tox and reduced cytokine expression. This chronic infection imprint is largely accounted for by constitutive Tox expression. Virus-specific Tcf1 <sup>+</sup> CD8 <sup>+</sup> T cells that persist after clearance of systemic infection also display a chronic infection imprint. Notwithstanding, renewed virus exposure induces a recall response, which controls virus infection in part. Thus, cessation of chronic antigen exposure yields a memory CD8 <sup>+</sup> T cell compartment that reflects prior stimulation.
Keywords
CD8(+) T cells, Tcf1, Tcf7, Tox, acute resolved LCMV infection, cell fate, chronic LCMV infection, chronic stimulation imprint, memory formation, memory-like, progenitor-exhausted
Pubmed
Web of science
Open Access
Yes
Create date
04/10/2021 13:09
Last modification date
11/12/2021 8:08
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