Evidence map›Paper›PMID 24591601›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2014

Activation induced deaminase C-terminal domain links DNA breaks to end protection and repair during class switch recombination.

Astrid Zahn, Anil K Eranki, Anne-Marie Patenaude, Stephen P Methot, Heather Fifield, Elena M Cortizas, Paul Foster, Kohsuke Imai, Anne Durandy, Mani Larijani and 2 more

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed, 1 pooled it
3.7field-weighted citation impact, top 6% 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, 1 synthesis or guideline pooled it, 57 citations in OpenAlex.

  1. Pooled it
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  12. Current insights into the mechanism of mammalian immunoglobulin class switch recombination.Critical reviews in biochemistry and molecular biology · 2019
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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

12 authors at 7 institutions in 4 countries.

Astrid ZahnDivision of Immunology and Viral Infections, Institut de Recherches Cliniques de Montréal, Montréal, QC, Canada H2W 1R7.
Anil K Eranki
Anne-Marie Patenaude
Stephen P Methot
Heather Fifield
Elena M Cortizas
Paul Foster
Kohsuke Imai
Anne Durandy
Mani Larijani
Ramiro E Verdun
Javier M Di Noia
Montreal Clinical Research Institute · CAMemorial University of Newfoundland · CAInstitut des Maladies Génétiques Imagine · FRSylvester Comprehensive Cancer Center · USTokyo Medical and Dental University · JPUniversité de Montréal · CAUniversity of Miami · US

Funding

Canadian Institutes of Health Research MOP111132Canadian Institutes of Health Research MOP130535
6 · The paper itself

Abstract

Activation-induced deaminase (AID) triggers antibody class switch recombination (CSR) in B cells by initiating DNA double strand breaks that are repaired by nonhomologous end-joining pathways. A role for AID at the repair step is unclear. We show that specific inactivation of the C-terminal AID domain encoded by exon 5 (E5) allows very efficient deamination of the AID target regions but greatly impacts the efficiency and quality of subsequent DNA repair. Specifically eliminating E5 not only precludes CSR but also, causes an atypical, enzymatic activity-dependent dominant-negative effect on CSR. Moreover, the E5 domain is required for the formation of AID-dependent Igh-cMyc chromosomal translocations. DNA breaks at the Igh switch regions induced by AID lacking E5 display defective end joining, failing to recruit DNA damage response factors and undergoing extensive end resection. These defects lead to nonproductive resolutions, such as rearrangements and homologous recombination that can antagonize CSR. Our results can explain the autosomal dominant inheritance of AID variants with truncated E5 in patients with hyper-IgM syndrome 2 and establish that AID, through the E5 domain, provides a link between DNA damage and repair during CSR.

Indexed as

DNA BreaksAICDA (Activation-Induced Cytidine Deaminase)Analysis of VarianceAnimalsBlotting, WesternB-LymphocytesCell LineChromatin ImmunoprecipitationCytidine DeaminaseDNA End-Joining RepairHumansImmunoglobulin Class SwitchingMiceMice, Inbred C57BLMice, KnockoutRNA, Small InterferingAICDA (Activation-Induced Cytidine Deaminase)Cytidine DeaminaseRNA, Small InterferingUracil-DNA Glycosidaseantibody gene diversificationisotype switchingsomatic hypermutation

Identifiers

PMID24591601
PMCPMC3964074
OpenAlexW2015392285

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.