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Fate mapping of single NK cells identifies a type 1 innate lymphoid-like lineage that bridges innate and adaptive recognition of viral infection.

Authors :
Flommersfeld S
Böttcher JP
Ersching J
Flossdorf M
Meiser P
Pachmayr LO
Leube J
Hensel I
Jarosch S
Zhang Q
Chaudhry MZ
Andrae I
Schiemann M
Busch DH
Cicin-Sain L
Sun JC
Gasteiger G
Victora GD
Höfer T
Buchholz VR
Grassmann S
Source :
Immunity [Immunity] 2021 Oct 12; Vol. 54 (10), pp. 2288-2304.e7. Date of Electronic Publication: 2021 Aug 25.
Publication Year :
2021

Abstract

Upon viral infection, natural killer (NK) cells expressing certain germline-encoded receptors are selected, expanded, and maintained in an adaptive-like manner. Currently, these are thought to differentiate along a common pathway. However, by fate mapping of single NK cells upon murine cytomegalovirus (MCMV) infection, we identified two distinct NK cell lineages that contributed to adaptive-like responses. One was equivalent to conventional NK (cNK) cells while the other was transcriptionally similar to type 1 innate lymphoid cells (ILC1s). ILC1-like NK cells showed splenic residency and strong cytokine production but also recognized and killed MCMV-infected cells, guided by activating receptor Ly49H. Moreover, they induced clustering of conventional type 1 dendritic cells and facilitated antigen-specific T cell priming early during MCMV infection, which depended on Ly49H and the NK cell-intrinsic expression of transcription factor Batf3. Thereby, ILC1-like NK cells bridge innate and adaptive viral recognition and unite critical features of cNK cells and ILC1s.<br />Competing Interests: Declaration of interests The authors declare no competing interests.<br /> (Copyright © 2021 The Author(s). Published by Elsevier Inc. All rights reserved.)

Details

Language :
English
ISSN :
1097-4180
Volume :
54
Issue :
10
Database :
MEDLINE
Journal :
Immunity
Publication Type :
Academic Journal
Accession number :
34437840
Full Text :
https://doi.org/10.1016/j.immuni.2021.08.002