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Journal of Virology
Article . 2019 . Peer-reviewed
License: CC BY
Data sources: Crossref
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Journal of Virology
Article
License: CC BY
Data sources: UnpayWall
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PubMed Central
Other literature type . 2019
License: CC BY
Data sources: PubMed Central
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Multiple Pathways To Avoid Beta Interferon Sensitivity of HIV-1 by Mutations in Capsid

Authors: Tahmina Sultana; João I. Mamede; Akatsuki Saito; Hirotaka Ode; Kyotaro Nohata; Romy Cohen; Emi E. Nakayama; +4 Authors

Multiple Pathways To Avoid Beta Interferon Sensitivity of HIV-1 by Mutations in Capsid

Abstract

HIV-1 infection causes robust innate immune activation in virus-infected patients. This immune activation is characterized by elevated levels of type I interferons (IFNs), which can block HIV-1 replication. Recent studies suggest that the viral capsid protein (CA) is a determinant for the sensitivity of HIV-1 to IFN-mediated restriction. Specifically, it was reported that the loss of CA interactions with CPSF6 or CypA leads to higher IFN sensitivity. However, the molecular mechanism of CA adaptation to IFN sensitivity is largely unknown. Here, we experimentally evolved an IFN-β-hypersensitive CA mutant which showed decreased binding to CPSF6 and CypA in IFN-β-treated cells. The CA mutations that emerged from this adaptation indeed conferred IFN-β resistance. Our genetic assays suggest a limited contribution of known host factors to IFN-β resistance. Strikingly, one of these mutations accelerated the kinetics of reverse transcription and uncoating. Our findings suggest that HIV-1 selected multiple, known host factor-independent pathways to avoid IFN-β-mediated restriction.

Keywords

Myxovirus Resistance Proteins, mRNA Cleavage and Polyadenylation Factors, THP-1 Cells, HIV Infections, Interferon-beta, Reverse Transcription, Virus Replication, Virus-Cell Interactions, Capsid, HEK293 Cells, Host-Pathogen Interactions, Mutation, HIV-1, Humans, Capsid Proteins, Cyclophilin A, HeLa Cells

  • BIP!
    Impact byBIP!
    citations
    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    17
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Top 10%
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Average
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Top 10%
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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
17
Top 10%
Average
Top 10%
Green
gold