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Respiratory Influenza Virus Infection Induces Memory-like Liver NK Cells in Mice.

Although NK cells are classified as innate immune cells, recent studies have demonstrated the transformation of NK cells into long-lived memory cells that contribute to secondary immune responses in certain mouse models. However, whether NK cells mount an Ag-specific memory response to acute influen... Full description

Journal Title: Journal of immunology (Baltimore Md. : 1950), February 1, 2017, Vol.198(3), pp.1242-1252
Main Author: Li, Tingting
Other Authors: Wang, Jian , Wang, Yanshi , Chen, Yongyan , Wei, Haiming , Sun, Rui , Tian, Zhigang
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: E-ISSN: 1550-6606 ; DOI: 10.4049/jimmunol.1502186
Link: http://search.proquest.com/docview/1854107308/?pq-origsite=primo
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title: Respiratory Influenza Virus Infection Induces Memory-like Liver NK Cells in Mice.
format: Article
creator:
  • Li, Tingting
  • Wang, Jian
  • Wang, Yanshi
  • Chen, Yongyan
  • Wei, Haiming
  • Sun, Rui
  • Tian, Zhigang
subjects:
  • Animals–Physiology
  • Homeodomain Proteins–Analysis
  • Immunologic Memory–Immunology
  • Integrin Alpha1–Immunology
  • Killer Cells, Natural–Immunology
  • Liver–Virology
  • Lung–Immunology
  • Mice–Immunology
  • Mice, Inbred C57bl–Immunology
  • Orthomyxoviridae Infections–Immunology
  • Abridged
  • Homeodomain Proteins
  • Integrin Alpha1
  • Rag-1 Protein
ispartof: Journal of immunology (Baltimore, Md. : 1950), February 1, 2017, Vol.198(3), pp.1242-1252
description: Although NK cells are classified as innate immune cells, recent studies have demonstrated the transformation of NK cells into long-lived memory cells that contribute to secondary immune responses in certain mouse models. However, whether NK cells mount an Ag-specific memory response to acute influenza virus infection has not yet been examined. Here, we show that, consistent with previous studies, lung NK cells play an important role in controlling viral proliferation after primary influenza virus infection. However, although lung NK cells display a memory phenotype at the late stage of infection, these cells do not protect mice against secondary influenza virus infection. Interestingly, liver NK cells from influenza virus-infected mice possess a memory phenotype and protect mice against secondary influenza virus infection. Memory-like liver NK cells display a CD49a+DX5- phenotype, and the adoptive transfer of purified liver CD49a+DX5- NK cells into naive mice followed by viral infection results in protective immunity and decreased viral titer. Moreover, we demonstrate that primary inactivated influenza virus induces memory NK cells residing in the liver of Rag1-/- mice. Collectively, these data suggest that liver CD49a+DX5- NK cells remember encountered Ag from influenza virus after primary infection and are more protective upon subsequent infection.
language: eng
source:
identifier: E-ISSN: 1550-6606 ; DOI: 10.4049/jimmunol.1502186
fulltext: fulltext
issn:
  • 15506606
  • 1550-6606
url: Link


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titleRespiratory Influenza Virus Infection Induces Memory-like Liver NK Cells in Mice.
creatorLi, Tingting ; Wang, Jian ; Wang, Yanshi ; Chen, Yongyan ; Wei, Haiming ; Sun, Rui ; Tian, Zhigang
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identifierE-ISSN: 1550-6606 ; DOI: 10.4049/jimmunol.1502186
subjectAnimals–Physiology ; Homeodomain Proteins–Analysis ; Immunologic Memory–Immunology ; Integrin Alpha1–Immunology ; Killer Cells, Natural–Immunology ; Liver–Virology ; Lung–Immunology ; Mice–Immunology ; Mice, Inbred C57bl–Immunology ; Orthomyxoviridae Infections–Immunology ; Abridged ; Homeodomain Proteins ; Integrin Alpha1 ; Rag-1 Protein
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descriptionAlthough NK cells are classified as innate immune cells, recent studies have demonstrated the transformation of NK cells into long-lived memory cells that contribute to secondary immune responses in certain mouse models. However, whether NK cells mount an Ag-specific memory response to acute influenza virus infection has not yet been examined. Here, we show that, consistent with previous studies, lung NK cells play an important role in controlling viral proliferation after primary influenza virus infection. However, although lung NK cells display a memory phenotype at the late stage of infection, these cells do not protect mice against secondary influenza virus infection. Interestingly, liver NK cells from influenza virus-infected mice possess a memory phenotype and protect mice against secondary influenza virus infection. Memory-like liver NK cells display a CD49a+DX5- phenotype, and the adoptive transfer of purified liver CD49a+DX5- NK cells into naive mice followed by viral infection results in protective immunity and decreased viral titer. Moreover, we demonstrate that primary inactivated influenza virus induces memory NK cells residing in the liver of Rag1-/- mice. Collectively, these data suggest that liver CD49a+DX5- NK cells remember encountered Ag from influenza virus after primary infection and are more protective upon subsequent infection.
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date2017-02-01