Journal
NATURE IMMUNOLOGY
Volume 15, Issue 6, Pages 546-553Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/ni.2876
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Funding
- US National Institutes of Health [CA009149]
- Searle Scholars Program
- Cancer Research Institute
- National Institutes of Health [AI085034, AI100874]
- Grants-in-Aid for Scientific Research [26221305] Funding Source: KAKEN
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Natural killer (NK) cells are innate lymphocytes that exhibit many features of adaptive immunity, including clonal proliferation and long-lived memory. Here we demonstrate that the BTB-ZF transcription factor Zbtb32 (also known as ROG, FAZF, TZFP and PLZP) was essential for the proliferative burst and protective capacity of virus-specific NK cells. Signals from proinflammatory cytokines were both necessary and sufficient to induce high expression of Zbtb32 in NK cells. Zbtb32 facilitated NK cell proliferation during infection by antagonizing the anti-proliferative factor Blimp-1 (Prdm1). Our data support a model in which Zbtb32 acts as a cellular 'hub' through which proinflammatory signals instruct a 'proliferation-permissive' state in NK cells, thereby allowing their prolific expansion in response to viral infection.
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