Evidence map›Paper›PMID 19363484›Full record

ArticleNature immunology2009

HoxC4 binds to the promoter of the cytidine deaminase AID gene to induce AID expression, class-switch DNA recombination and somatic hypermutation.

Seok-Rae Park, Hong Zan, Zsuzsanna Pal, Jinsong Zhang, Ahmed Al-Qahtani, Egest J Pone, Zhenming Xu, Thach Mai, Paolo Casali

Expression of concernOpen access · greenAbstract read
In one paragraph

Article in Nature immunology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It carries an expression of concern. Cited by 91 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
91citing papers in PubMed, 1 pooled it
8.7field-weighted citation impact, top 2% 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

91 citing papers in PubMed, 1 synthesis or guideline pooled it, 136 citations in OpenAlex.

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

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors at 1 institution in 1 country.

Seok-Rae ParkInstitute for Immunology, School of Medicine and School of Biological Sciences, University of California, Irvine, California, USA.
Hong Zan
Zsuzsanna Pal
Jinsong Zhang
Ahmed Al-Qahtani
Egest J Pone
Zhenming Xu
Thach Mai
Paolo Casali
University of California, Irvine · US

Funding

Univ.of Calif., Irvine Cancer Center Support GrantP30CA062203 · NCI · UNIVERSITY OF CALIFORNIA-IRVINE · PI Christine Hui · 1994 to 2026
$57.9M
CARCINOGENESIST32CA009054 · NCI · UNIVERSITY OF CALIFORNIA-IRVINE · PI EDINGER, AIMEE L, FRUMAN, DAVID ALEXANDER · 1985 to 2025
$8.6M
Somatic hypermutation and class switching in autoimmunityR01AI079705 · NIAID · UNIVERSITY OF TEXAS HLTH SCIENCE CENTER · PI CASALI, PAOLO · 2010 to 2019
$4.1M
Immunoglobulin class switch DNA recombinationR01AI045011 · NIAID · WEILL MEDICAL COLLEGE OF CORNELL UNIV · PI CASALI, PAOLO · 2000 to 2011
$3.8M
Immunology Research Training ProgramT32AI060573 · NIAID · UNIVERSITY OF CALIFORNIA-IRVINE · PI PEARLMAN, ERIC · 2005 to 2020
$1.9M
Immunoglobulin class switch DNA recombinationR56AI045011 · NIAID · UNIVERSITY OF CALIFORNIA-IRVINE · PI CASALI, PAOLO · 2012 to 2012
$523k
Molecular mechanisms in the generation of autoantibodies and lupusR56AI079705 · NIAID · UNIVERSITY OF CALIFORNIA-IRVINE · PI CASALI, PAOLO · 2008 to 2008
$381k
NCI NIH HHS P30 CA062203NCI NIH HHS T32 CA009054NIAID NIH HHS AI 045011NIAID NIH HHS AI 060573NIAID NIH HHS AI 079705NIAID NIH HHS R01 AI045011NIAID NIH HHS R01 AI079705NIAID NIH HHS R56 AI045011NIAID NIH HHS R56 AI079705NIAID NIH HHS T32 AI060573
6 · The paper itself

Abstract

The cytidine deaminase AID (encoded by Aicda in mice and AICDA in humans) is critical for immunoglobulin class-switch recombination (CSR) and somatic hypermutation (SHM). Here we show that AID expression was induced by the HoxC4 homeodomain transcription factor, which bound to a highly conserved HoxC4-Oct site in the Aicda or AICDA promoter. This site functioned in synergy with a conserved binding site for the transcription factors Sp1, Sp3 and NF-kappaB. HoxC4 was 'preferentially' expressed in germinal center B cells and was upregulated by engagement of CD40 by CD154, as well as by lipopolysaccharide and interleukin 4. HoxC4 deficiency resulted in impaired CSR and SHM because of lower AID expression and not some other putative HoxC4-dependent activity. Enforced expression of AID in Hoxc4(-/-) B cells fully restored CSR. Thus, HoxC4 directly activates the Aicda promoter, thereby inducing AID expression, CSR and SHM.

Indexed as

AICDA (Activation-Induced Cytidine Deaminase)AnimalsBase SequenceB-LymphocytesConserved SequenceCytidine DeaminaseElectrophoretic Mobility Shift AssayFlow CytometryGene Expression RegulationGerminal CenterHomeodomain ProteinsHumansImmunoglobulin Class SwitchingImmunoprecipitationMiceMice, Inbred C57BLAICDA (Activation-Induced Cytidine Deaminase)Cytidine DeaminaseHomeodomain ProteinsHoxc4 protein, mouse

Identifiers

PMID19363484
PMCPMC2753990
OpenAlexW92693975

What OpenQuestion holds

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LicenceTDM
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.