Evidence map›Paper›PMID 14722287›Full record

ArticleJournal of virology2004

Impaired processing and presentation of cytotoxic-T-lymphocyte (CTL) epitopes are major escape mechanisms from CTL immune pressure in human immunodeficiency virus type 1 infection.

Yoshiyuki Yokomaku, Hideka Miura, Hiroko Tomiyama, Ai Kawana-Tachikawa, Masafumi Takiguchi, Asato Kojima, Yoshiyuki Nagai, Aikichi Iwamoto, Zene Matsuda, Koya Ariyoshi

Open access · greenAbstract read
In one paragraph

Article in Journal of virology, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 70 papers.

0numbers the graph read from it
0cells of the map it votes in
70citing papers in PubMed
4.5field-weighted citation impact, top 4% 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

70 citing papers in PubMed, 140 citations in OpenAlex.

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10 more citing papers are in PubMed but not listed here.

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

10 authors at 6 institutions in 3 countries.

Yoshiyuki YokomakuAIDS Research Center, National Institute of Infectious Diseases, University of Tokyo, Tokyo, Japan.
Hideka Miura
Hiroko Tomiyama
Ai Kawana-Tachikawa
Masafumi Takiguchi
Asato Kojima
Yoshiyuki Nagai
Aikichi Iwamoto
Zene Matsuda
Koya Ariyoshi
National Institute of Infectious Diseases · JPAIDS and Clinical Immunology Research Center · GEKumamoto University · JPInfectious Diseases Institute · UGTokyo University of Science · JPToyama Institute of Health · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Investigating escape mechanisms of human immunodeficiency virus type 1 (HIV-1) from cytotoxic T lymphocytes (CTLs) is essential for understanding the pathogenesis of HIV-1 infection and developing effective vaccines. To study the processing and presentation of known CTL epitopes, we prepared Epstein-Barr virus-transformed B cells that endogenously express the gag gene of six field isolates by adopting an env/nef-deletion HIV-1 vector pseudotyped with vesicular stomatitis virus G protein and then tested them for the recognition by Gag epitope-specific CTL lines or clones. We observed that two field variants, SLFNTVAVL and SVYNTVATL, of an A*0201-restricted Gag CTL epitope SLYNTVATL, and three field variants, KYRLKHLVW, QYRLKHIVW, and RYRLKHLVW, of an A24-restricted Gag CTL epitope KYKLKHIVW escaped from being killed by the CTL lines, despite the fact that they were recognized when the synthetic peptides corresponding to these variant sequences were exogenously loaded onto the target cells. Thus, their escape is likely due to the changes that occur during the processing and presentation of epitopes in the infected cells. Mutations responsible for this mode of escape were located within the epitope regions rather than the flanking regions, and such mutations did not influence the virus replication. The results suggest that the impaired antigen processing and presentation often occur in HIV-1 field isolates and thus are one of the major mechanisms that enable HIV-1 to escape from CTL recognition. We emphasize the importance of testing HIV-1 variants in an endogenous expression system.

Indexed as

Antigen PresentationViral ProteinsAmino Acid SequenceEpitopes, T-Lymphocytegag Gene Products, Human Immunodeficiency VirusGene Products, gagHIV-1HIV AntigensHIV InfectionsHLA-A2 AntigenHLA-A AntigensHumansMolecular Sequence DataMutationT-Lymphocytes, CytotoxicVirus ReplicationEpitopes, T-Lymphocytegag Gene Products, Human Immunodeficiency VirusGene Products, gagHIV AntigensHLA-A*02:01 antigenHLA-A2 AntigenHLA-A Antigensp17 protein, Human Immunodeficiency Virus Type 1Viral Proteins

Identifiers

PMID14722287
PMCPMC321367
OpenAlexW2112111895

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.