Evidence map›Paper›PMID 17311088›Full record

ArticlePloS one2007

Sequential broadening of CTL responses in early HIV-1 infection is associated with viral escape.

Annika C Karlsson, Astrid K N Iversen, Joan M Chapman, Tulio de Oliviera, Gerald Spotts, Andrew J McMichael, Miles P Davenport, Frederick M Hecht, Douglas F Nixon

Open access · goldAbstract readComparative Study
In one paragraph

Article in PloS one, 2007. 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
4.0field-weighted citation impact, top 5% 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, 75 citations in OpenAlex.

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  7. Functional Profile of CD8Frontiers in immunology · 2022
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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

9 authors at 5 institutions in 4 countries.

Annika C KarlssonGladstone Institute of Virology and Immunology, University of California, San Francisco, California, United States of America. annika.karlsson@smi.ki.se
Astrid K N Iversen
Joan M Chapman
Tulio de Oliviera
Gerald Spotts
Andrew J McMichael
Miles P Davenport
Frederick M Hecht
Douglas F Nixon
University of California, San Francisco · USGladstone Institutes · USMRC Human Immunology Unit · GBUniversity of Oxford · GBUNSW Sydney · AU

Funding

Virology CoreP30AI027763 · NIAID · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI Monica Gandhi · 1988 to 2026
$93.6M
IMMUNOLOGIC &VIROLOGIC FEATURES OF EARLY HIV INFECTIONU01AI041531 · NIAID · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI LEVY, JAY A · 1997 to 2006
$13.0M
DYNAMICS OF HIV1 SPECIFIC CTL IN HIV1 INFECTIONR01AI044595 · NIAID · J. DAVID GLADSTONE INSTITUTES · PI NIXON, DOUGLAS F · 1999 to 2003
$1.3M
Medical Research Council MC_U137884177NIAID NIH HHS P30 AI027763NIAID NIH HHS P30 AI27763NIAID NIH HHS R01 AI044595NIAID NIH HHS R01 AI44595NIAID NIH HHS U01 AI041531NIAID NIH HHS U01 AI41531
6 · The paper itself

Abstract

backgroundAntigen-specific CTL responses are thought to play a central role in containment of HIV-1 infection, but no consistent correlation has been found between the magnitude and/or breadth of response and viral load changes during disease progression. METHODS AND

findingsWe undertook a detailed investigation of longitudinal CTL responses and HIV-1 evolution beginning with primary infection in 11 untreated HLA-A2 positive individuals. A subset of patients developed broad responses, which selected for consensus B epitope variants in Gag, Pol, and Nef, suggesting CTL-induced adaptation of HIV-1 at the population level. The patients who developed viral escape mutations and broad autologous CTL responses over time had a significantly higher increase in viral load during the first year of infection compared to those who did not develop viral escape mutations.

conclusionsA continuous dynamic development of CTL responses was associated with viral escape from temporarily effective immune responses. Our results suggest that broad CTL responses often represent footprints left by viral CTL escape rather than effective immune control, and help explain earlier findings that fail to show an association between breadth of CTL responses and viral load. Our results also demonstrate that CTL pressures help to maintain certain elements of consensus viral sequence, which likely represent viral escape from common HLA-restricted CTL responses. The ability of HIV to evolve to escape CTL responses restricted by a common HLA type highlights the challenges posed to development of an effective CTL-based vaccine.

Indexed as

Immune EvasionAmino Acid SubstitutionBase SequenceConsensus SequenceDisease ProgressionEpitopesEvolution, MolecularFemalegag Gene Products, Human Immunodeficiency VirusHIV-1HIV AntigensHIV InfectionsHLA-A2 AntigenHumansInterferon-gammaMaleEpitopesgag Gene Products, Human Immunodeficiency VirusHIV AntigensHLA-A2 AntigenInterferon-gammanef Gene Products, Human Immunodeficiency Virusnef protein, Human immunodeficiency virus 1pol Gene Products, Human Immunodeficiency VirusTumor Necrosis Factor-alpha

Identifiers

PMID17311088
PMCPMC1790860
OpenAlexW2006556166

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.