Evidence map›Paper›PMID 9774642›Full record

ArticleMolecular and cellular biology1998

Evidence that immunoglobulin VH-DJ recombination does not require germ line transcription of the recombining variable gene segment.

C Angelin-Duclos, K Calame

Open access · greenAbstract read
In one paragraph

Article in Molecular and cellular biology, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
1.9field-weighted citation impact, top 13% 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

30 citing papers in PubMed, 77 citations in OpenAlex.

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  10. Evolutionary paradox of immunity.North American journal of medical sciences · 2015
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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.

C Angelin-DuclosDepartment of Microbiology and Department of Biochemistry and Molecular Biophysics, Columbia University College of Physicians and Surgeons, New York, New York 10032, USA.
K Calame
Columbia University · US

Funding

TRANSCRIPTION OF IMMUNOGLUBULIN HEAVY CHAIN GENESR01GM029361 · NIGMS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI CALAME, KATHRYN L. · 1985 to 2001
$831k
NIGMS NIH HHS R01 GM29361
6 · The paper itself

Abstract

The importance of V(D)J recombination for generating diversity in the immune system is well established, but the mechanisms which regulate V(D)J recombination are still poorly understood. Although transcription of unrearranged (germ line) immunoglobulin and T-cell receptor gene segments often precedes V(D)J recombination and has been implicated in its control, the actual role of germ line transcripts in V(D)J recombination is not known. We used a sensitive reverse transcription-PCR assay to study immunoglobulin VH germ line transcripts in proB lines from RAG-deficient mice. All 10 VH families analyzed were germ line transcribed, and germ line transcription was found in all of the cell lines examined, indicating that active chromatin was present in the VH region. However, not all VH families were germ line transcribed in every cell line, and there was a surprising lack of uniformity in the number and family distribution of germ line VH transcripts in individual lines. When V(D)J recombination was activated by restoration of RAG activity, recombinational activity of endogenous VH genes for which germ line transcription was observed could be compared with those of genes for which it was not observed. This analysis revealed multiple examples of endogenous VH gene segments which were rearranged in cells where their germ line transcription was not detectable prior to RAG expression. Thus, our data provide strong support for the idea that V-(D)J recombination does not require germ line transcription of the recombining variable gene segment.

Indexed as

AnimalsBase SequenceB-LymphocytesCell LineDNA-Binding ProteinsGene Expression Regulation, DevelopmentalGenes, ImmunoglobulinGenes, RAG-1Germ CellsImmunoglobulin Variable RegionMiceMice, KnockoutMolecular Sequence DataPolymerase Chain ReactionRecombination, GeneticRNA-Directed DNA PolymeraseDNA-Binding ProteinsImmunoglobulin Variable RegionRag2 protein, mouseRNA-Directed DNA PolymeraseV(D)J recombination activating protein 2

Identifiers

PMID9774642
PMCPMC109212
OpenAlexW2122874397

What OpenQuestion holds

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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.