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Adaptive immune features of natural killer cells

Open access
Sun, Joseph C., Beilke, Joshua N., Lanier, Lewis L.·2009·Nature

Abstract

In an adaptive immune response, naive T cells proliferate during infection and generate long-lived memory cells that undergo secondary expansion after a repeat encounter with the same pathogen. Although natural killer (NK) cells have traditionally been classified as cells of the innate immune system, they share many similarities with cytotoxic T lymphocytes. We use a mouse model of cytomegalovirus infection to show that, like T cells, NK cells bearing the virus-specific Ly49H receptor proliferate 100-fold in the spleen and 1,000-fold in the liver after infection. After a contraction phase, Ly49H-positive NK cells reside in lymphoid and non-lymphoid organs for several months. These self-renewing ‘memory’ NK cells rapidly degranulate and produce cytokines on reactivation. Adoptive transfer of these NK cells into naive animals followed by viral challenge results in a robust secondary expansion and protective immunity. These findings reveal properties of NK cells that were previously attributed only to cells of the adaptive immune system.

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Metadata

Authors
Sun, J. C., Beilke, J. N., & Lanier, L. L.
Venue
Nature
Published
2009-01-11
Volume
457
Issue
7229
Pages
557-561
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W1982084822
Cited by
1,619
References
3
FWCI
35.77
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Adaptive immune features of natural killer cells. https://app.cochat.ai/papers/10.1038/nature07665
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Sun, J. C., Beilke, J. N., & Lanier, L. L. (2009). Adaptive immune features of natural killer cells. Nature. https://doi.org/10.1038/nature07665

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