Kinetics of early innate immune activation during HIV-1 infection of humanized mice
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Published version
Author(s)
Type
Journal Article
Abstract
Human immunodeficiency virus type-1(HIV-1) infectionis associated with aberrant immune activation, however, most model systems for HIV-1have been used during established infection. Here, we utilizeultra-sensitive HIV-1quantification to delineate early events during the HIV-1eclipse,burstand chronicphases ofHIV-1infection in humanized mice. We show that veryearlyin infection, HIV-1suppresses peripheral type I interferon(IFN)and interferon-stimulated gene (ISG) responses,including the HIV-1restriction factorIFI44. At the peak of innate immune activation, prior to CD4 T cell loss, HIV-1infection differentially affects peripheral and lymphoid TLR expression profiles in T cells and macrophages. This resultsin a trend towardsanaltered activation of NFkB, TBK1 and IRF3. The subsequenttype I and III IFN responsesresult in preferential induction of peripheral ISG responses. Following this initial innate immune activation, peripheral expression of theHIV-1restriction factorSAMHD1returnsto levels below those observed in uninfected mice, suggesting that HIV-1interferes with their basal expression. However, peripheralcells, still retain their responsiveness to exogenous type I IFN, whereas splenic cells show a reduction in select ISG in response to IFN. This demonstrates the highly dynamic nature of very early HIV-1infection and suggests that blocks to the induction of HIV-1restriction factors contribute to theestablishment of viral persistence.
Date Issued
2019-06-01
Date Acceptance
2019-03-01
Citation
Journal of Virology, 2019, 93 (11)
ISSN
1098-5514
Publisher
American Society for Microbiology
Journal / Book Title
Journal of Virology
Volume
93
Issue
11
Copyright Statement
© 2019 Skelton et al. This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International license (https://creativecommons.org/licenses/by/4.0/)
Sponsor
Wellcome Trust
Grant Number
104771/Z/14/Z
Subjects
Science & Technology
Life Sciences & Biomedicine
Virology
human immunodeficiency virus
humanized mouse
innate immunity
INTERFERON-STIMULATED GENES
TRANSMISSION
MECHANISMS
DEPLETION
RESPONSES
VIVO
human immunodeficiency virus
humanized mouse
innate immunity
Virology
06 Biological Sciences
07 Agricultural and Veterinary Sciences
11 Medical and Health Sciences
Publication Status
Published
Article Number
ARTN e02123-18
Date Publish Online
2019-03-13