Evidence map›Paper›PMID 21730193›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2011

Evolution of the V, D, and J gene segments used in the primate gammadelta T-cell receptor reveals a dichotomy of conservation and diversity.

Allison R Kazen, Erin J Adams

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers.

0numbers the graph read from it
0cells of the map it votes in
41citing papers in PubMed
0.9field-weighted citation impact, top 29% 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

41 citing papers in PubMed, 60 citations in OpenAlex.

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  20. Alpaca (Proceedings of the National Academy of Sciences of the United States of America · 2020
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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

2 authors at 1 institution in 1 country.

Allison R KazenDepartment of Biochemistry and Molecular Biology, University of Chicago, Chicago, IL 60637, USA.
Erin J Adams
University of Chicago · US

Funding

Molecular Recognition of Ligand by the Gamma Delta T Cell ReceptorR01AI073922 · NIAID · UNIVERSITY OF CHICAGO · PI ADAMS, ERIN JUNE · 2007 to 2016
$3.8M
NIAID NIH HHS R01 AI073922NIAID NIH HHS R01-AI073922
6 · The paper itself

Abstract

γδ T cells are an immunological enigma in that both their function in the immune response and the molecular mechanisms behind their activation remain unclear. These cells predominate in the epithelia and can be rapidly activated to provide an array of responses. However, no homologous γδ T-cell populations have been identified between humans and mice, and our understanding of what these cells recognize as ligands is limited. Here we take an alternative approach to understanding human γδ T-cell ligand recognition by studying the evolutionary forces that have shaped the V, D, and J gene segments that are used during somatic rearrangement to generate the γδ T-cell receptor. We find that distinctly different forces have shaped the γ and δ loci. The Vδ and Jδ genes are highly conserved, some even through to mouse. In contrast, the γ-locus is split: the Vγ9, Vγ10, and Vγ11 genes represent the conserved region of the Vγ gene locus whereas the remaining Vγ genes have been evolving rapidly, such that orthology throughout the primate lineage is unclear. We have also analyzed the coding versus silent substitutions between species within the V and J gene segments and find a preference for coding substitutions in the complementarity determining region loops of many of the V gene segments. Our results provide a different perspective on investigating human γδ T-cell recognition, demonstrating that diversification at particular γδ gene loci has been favored during primate evolution, suggesting adaptation of particular V domains to a changing ligand environment.

Indexed as

Evolution, MolecularGenetic VariationAnimalsBase SequenceCluster AnalysisComputational BiologyConserved SequenceDNA PrimersGenes, Immunoglobulin Heavy ChainHumansMiceMolecular Sequence DataPhylogenyPrimatesReceptors, Antigen, T-Cell, gamma-deltaSequence AlignmentDNA PrimersReceptors, Antigen, T-Cell, gamma-delta

Identifiers

PMID21730193
PMCPMC3141992
OpenAlexW1982780950

What OpenQuestion holds

Textmetadata
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Registered trials

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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.