Evidence map›Paper›PMID 23093676›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2012

HIV-1 Nef interferes with T-lymphocyte circulation through confined environments in vivo.

Bettina Stolp, Andrea Imle, Fernanda Matos Coelho, Miroslav Hons, Roser Gorina, Ruth Lyck, Jens V Stein, Oliver T Fackler

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed
2.7field-weighted citation impact, top 10% 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

44 citing papers in PubMed, 71 citations in OpenAlex.

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  6. Novel role of HIV-1 Nef in regulating the ubiquitination of cellular proteins.Frontiers in cellular and infection microbiology · 2023
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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

8 authors at 3 institutions in 2 countries.

Bettina StolpDepartment of Infectious Diseases-Virology, University Hospital Heidelberg, 69120 Heidelberg, Germany.
Andrea Imle
Fernanda Matos Coelho
Miroslav Hons
Roser Gorina
Ruth Lyck
Jens V Stein
Oliver T Fackler
University of Bern · CHUniversity Hospital Heidelberg · DEHeidelberg University · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

HIV-1 negative factor (Nef) elevates virus replication and contributes to immune evasion in vivo. As one of its established in vitro activities, Nef interferes with T-lymphocyte chemotaxis by reducing host cell actin dynamics. To explore Nef's influence on in vivo recirculation of T lymphocytes, we assessed lymph-node homing of Nef-expressing primary murine lymphocytes and found a drastic impairment in homing to peripheral lymph nodes. Intravital imaging and 3D immunofluorescence reconstruction of lymph nodes revealed that Nef potently impaired T-lymphocyte extravasation through high endothelial venules and reduced subsequent parenchymal motility. Ex vivo analyses of transendothelial migration revealed that Nef disrupted T-lymphocyte polarization and interfered with diapedesis and migration in the narrow subendothelial space. Consistently, Nef specifically affected T-lymphocyte motility modes used in dense environments that pose high physical barriers to migration. Mechanistically, inhibition of lymph node homing, subendothelial migration and cell polarization, but not diapedesis, depended on Nef's ability to inhibit host cell actin remodeling. Nef-mediated interference with in vivo recirculation of T lymphocytes may compromise T-cell help and thus represents an important mechanism for its function as a HIV pathogenicity factor.

Indexed as

AnimalsCell MovementCells, CulturedCell SeparationCellular MicroenvironmentEndothelium, VascularHIV-1Lymph NodesMiceMice, Inbred C57BLnef Gene Products, Human Immunodeficiency VirusPorosityStress, MechanicalT-LymphocytesTransduction, GeneticTransendothelial and Transepithelial Migrationnef Gene Products, Human Immunodeficiency Virus

Identifiers

PMID23093676
PMCPMC3494961
OpenAlexW2057271096

What OpenQuestion holds

Textmetadata
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.