Natural killer cells:: walking three paths down memory lane

• Autores: Gundula Min Oo, Yosuke Kamimura, Deborah W. Hendricks, Tsukasa Nabekura, Lewis L. Lanier
• Localización: Trends in immunology, ISSN 1471-4906, Vol. 34, Nº. 6, 2013, págs. 251-258
• Idioma: inglés
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• Resumen

  • Immunological memory has traditionally been regarded as a unique feature of the adaptive immune response, mediated in an antigen-specific manner by T and B lymphocytes. All other hematopoietic cells, including natural killer (NK) cells, are classified as innate immune cells, which have been considered short-lived but can respond rapidly against pathogens in a manner not thought to be driven by antigen. Interestingly, NK cells have recently been shown to survive long term after antigen exposure and subsequently mediate antigen-specific recall responses. In this review, we address the similarities between, and the controversies surrounding, three major viewpoints of NK memory that have arisen from these recent studies: (i) mouse cytomegalovirus (MCMV)-induced memory; (ii) cytokine-induced memory; and (iii) liver-restricted memory cells.