Distinct Requirements of CHD4 during B Cell Development and Antibody Response.
AID
CHD4
H3K9me3
NuRD complex
chromatin remodeling
class switch recombination
germinal centers
p53
Journal
Cell reports
ISSN: 2211-1247
Titre abrégé: Cell Rep
Pays: United States
ID NLM: 101573691
Informations de publication
Date de publication:
30 04 2019
30 04 2019
Historique:
received:
30
11
2018
revised:
15
03
2019
accepted:
01
04
2019
entrez:
3
5
2019
pubmed:
3
5
2019
medline:
7
7
2020
Statut:
ppublish
Résumé
The immunoglobulin heavy chain (Igh) locus features a dynamic chromatin landscape to promote class switch recombination (CSR), yet the mechanisms that regulate this landscape remain poorly understood. CHD4, a component of the chromatin remodeling NuRD complex, directly binds H3K9me3, an epigenetic mark present at the Igh locus during CSR. We find that CHD4 is essential for early B cell development but is dispensable for the homeostatic maintenance of mature, naive B cells. However, loss of CHD4 in mature B cells impairs CSR because of suboptimal targeting of AID to the Igh locus. Additionally, we find that CHD4 represses p53 expression to promote B cell proliferation. This work reveals distinct roles for CHD4 in B cell development and CSR and links the H3K9me3 epigenetic mark with AID recruitment to the Igh locus.
Identifiants
pubmed: 31042474
pii: S2211-1247(19)30466-8
doi: 10.1016/j.celrep.2019.04.011
pmc: PMC6527137
mid: NIHMS1528295
pii:
doi:
Substances chimiques
TP53 protein, human
0
Tumor Suppressor Protein p53
0
Mi-2beta protein, mouse
EC 3.6.1.3
DNA Helicases
EC 3.6.4.-
Types de publication
Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
1472-1486.e5Subventions
Organisme : NIAID NIH HHS
ID : R01 AI100874
Pays : United States
Organisme : NIAID NIH HHS
ID : R01 AI072194
Pays : United States
Organisme : NCI NIH HHS
ID : R01 CA185660
Pays : United States
Organisme : Howard Hughes Medical Institute
Pays : United States
Organisme : NCI NIH HHS
ID : T32 CA009149
Pays : United States
Organisme : NIAID NIH HHS
ID : R01 AI124186
Pays : United States
Organisme : NCI NIH HHS
ID : P30 CA008748
Pays : United States
Organisme : NIAID NIH HHS
ID : R37 AI034206
Pays : United States
Organisme : NIAID NIH HHS
ID : R21 AI137752
Pays : United States
Organisme : NIAID NIH HHS
ID : R01 AI130043
Pays : United States
Organisme : NIAID NIH HHS
ID : R56 AI072194
Pays : United States
Informations de copyright
Copyright © 2019 The Author(s). Published by Elsevier Inc. All rights reserved.
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