Evidence map›Paper›PMID 21504576›Full record

ArticleRetrovirology2011

Tetherin does not significantly restrict dendritic cell-mediated HIV-1 transmission and its expression is upregulated by newly synthesized HIV-1 Nef.

Christopher M Coleman, Paul Spearman, Li Wu

Open access · goldAbstract read
In one paragraph

Article in Retrovirology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed, 1 pooled it
2.8field-weighted citation impact, top 9% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

33 citing papers in PubMed, 1 synthesis or guideline pooled it, 40 citations in OpenAlex.

  1. Pooled it
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  13. The role of human dendritic cells in HIV-1 infection.The Journal of investigative dermatology · 2015
    Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 2 institutions in 1 country.

Christopher M ColemanCenter for Retrovirus Research, Department of Veterinary Biosciences, The Ohio State University, Columbus, OH 43210, USA.
Paul Spearman
Li Wu
The Ohio State University · USEmory University · US

Funding

Role of VPU in Retroviral Particle AssemblyR01AI058828 · NIAID · VANDERBILT UNIVERSITY · PI SPEARMAN, PAUL W. · 2004 to 2015
$3.6M
Mechanisms Underlying Dendritic Cell-mediated HIV TransmissionR01AI068493 · NIAID · OHIO STATE UNIVERSITY · PI WU, LI · 2006 to 2010
$1.5M
Exploring Postentry Restriction of HIV Infection in Human MonocytesR21AI078762 · NIAID · OHIO STATE UNIVERSITY · PI WU, LI · 2009 to 2010
$419k
NIAID NIH HHS AI 068493NIAID NIH HHS AI 078762NIAID NIH HHS R01 AI058828NIAID NIH HHS R01 AI068493NIAID NIH HHS R21 AI078762
6 · The paper itself

Abstract

backgroundDendritic cells (DCs) are among the first cells to encounter HIV-1 and play important roles in viral transmission and pathogenesis. Immature DCs allow productive HIV-1 replication and long-term viral dissemination. The pro-inflammatory factor lipopolysaccharide (LPS) induces DC maturation and enhances the efficiency of DC-mediated HIV-1 transmission. Type I interferon (IFN) partially inhibits HIV-1 replication and cell-cell transmission in CD4+ T cells and macrophages. Tetherin is a type I IFN-inducible restriction factor that blocks HIV-1 release and modulates CD4+ T cell-mediated cell-to-cell transmission of HIV-1. However, the role of type I IFN and tetherin in HIV-1 infection of DCs and DC-mediated viral transmission remains unknown.

resultsWe demonstrated that IFN-alpha (IFNα)-induced mature DCs restricted HIV-1 replication and trans-infection of CD4+ T cells. Tetherin expression in monocyte-derived immature DCs was undetectable or very low. High levels of tetherin were transiently expressed in LPS- and IFNα-induced mature DCs, while HIV-1 localized into distinct patches in these DCs. Knockdown of induced tetherin in LPS- or IFNα-matured DCs modestly enhanced HIV-1 transmission to CD4+ T cells, but had no significant effect on wild-type HIV-1 replication in mature DCs. Intriguingly, we found that HIV-1 replication in immature DCs induced significant tetherin expression in a Nef-dependent manner.

conclusionsThe restriction of HIV-1 replication and transmission in IFNα-induced mature DCs indicates a potent anti-HIV-1 response; however, high levels of tetherin induced in mature DCs cannot significantly restrict wild-type HIV-1 release and DC-mediated HIV-1 transmission. Nef-dependent tetherin induction in HIV-1-infected immature DCs suggests an innate immune response of DCs to HIV-1 infection.

Indexed as

Antigens, CDBone Marrow Stromal Antigen 2CD4-Positive T-LymphocytesDendritic CellsGene Knockdown TechniquesGPI-Linked ProteinsHIV-1Interferon-alphaLipopolysaccharidesnef Gene Products, Human Immunodeficiency VirusAntigens, CDBone Marrow Stromal Antigen 2BST2 protein, humanGPI-Linked ProteinsInterferon-alphaLipopolysaccharidesnef Gene Products, Human Immunodeficiency Virusnef protein, Human immunodeficiency virus 1

Identifiers

PMID21504576
PMCPMC3108291
OpenAlexW2099500083

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.