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Neuraminidase-Mediated, NKp46-Dependent Immune-Evasion Mechanism of Influenza Viruses

Yotam Bar-On, Ariella Glasner, Tal Meningher, Hagit Achdout, Chamutal Gur, Dikla Lankry, Alon Vitenshtein, Adrienne F.A. Meyers, Michal Mandelboim, Ofer Mandelboim

Research output: Contribution to journalArticlepeer-review

Abstract

Natural killer (NK) cells play an essential role in the defense against influenza virus, one of the deadliest respiratory viruses known today. The NKp46 receptor, expressed by NK cells, is critical for controlling influenza infections, as influenza-virus-infected cells are eliminated through the recognition of the viral hemagglutinin (HA) protein by NKp46. Here, we describe an immune-evasion mechanism of influenza viruses that is mediated by the neuraminidase (NA) protein. By using various NA blockers, we show that NA removes sialic acid residues from NKp46 and that this leads to reduced recognition of HA. Furthermore, we provide invivo and invitro evidence for the existence of this NA-mediated, NKp46-dependent immune-evasion mechanism and demonstrate that NA inhibitors, which are commonly used for the treatment of influenza infections, are useful not only as blockers of virus budding but also as boosters of NKp46 recognition.

Original languageEnglish
Pages (from-to)1044-1050
Number of pages7
JournalCell Reports
Volume3
Issue number4
DOIs
StatePublished - 25 Apr 2013

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 3 - Good Health and Well-being
    SDG 3 Good Health and Well-being

All Science Journal Classification (ASJC) codes

  • General Biochemistry,Genetics and Molecular Biology

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