Exome sequencing in amyotrophic lateral sclerosis implicates a novel gene, DNAJC7, encoding a heat-shock protein.
Journal
Nature neuroscience
ISSN: 1546-1726
Titre abrégé: Nat Neurosci
Pays: United States
ID NLM: 9809671
Informations de publication
Date de publication:
12 2019
12 2019
Historique:
received:
16
05
2019
accepted:
02
10
2019
pubmed:
27
11
2019
medline:
1
2
2020
entrez:
27
11
2019
Statut:
ppublish
Résumé
To discover novel genes underlying amyotrophic lateral sclerosis (ALS), we aggregated exomes from 3,864 cases and 7,839 ancestry-matched controls. We observed a significant excess of rare protein-truncating variants among ALS cases, and these variants were concentrated in constrained genes. Through gene level analyses, we replicated known ALS genes including SOD1, NEK1 and FUS. We also observed multiple distinct protein-truncating variants in a highly constrained gene, DNAJC7. The signal in DNAJC7 exceeded genome-wide significance, and immunoblotting assays showed depletion of DNAJC7 protein in fibroblasts in a patient with ALS carrying the p.Arg156Ter variant. DNAJC7 encodes a member of the heat-shock protein family, HSP40, which, along with HSP70 proteins, facilitates protein homeostasis, including folding of newly synthesized polypeptides and clearance of degraded proteins. When these processes are not regulated, misfolding and accumulation of aberrant proteins can occur and lead to protein aggregation, which is a pathological hallmark of neurodegeneration. Our results highlight DNAJC7 as a novel gene for ALS.
Identifiants
pubmed: 31768050
doi: 10.1038/s41593-019-0530-0
pii: 10.1038/s41593-019-0530-0
pmc: PMC6919277
mid: NIHMS1061640
doi:
Substances chimiques
DNAJC7 protein, human
0
Heat-Shock Proteins
0
Molecular Chaperones
0
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
1966-1974Subventions
Organisme : Medical Research Council
ID : MR/L501529/1
Pays : United Kingdom
Organisme : NCATS NIH HHS
ID : U2C TR002818
Pays : United States
Organisme : NINDS NIH HHS
ID : U54 NS092091
Pays : United States
Organisme : MRF
ID : MRF_MRF-060-0003-RG-SMITH
Pays : United Kingdom
Organisme : Medical Research Council
ID : G1100695
Pays : United Kingdom
Organisme : Motor Neurone Disease Association
ID : ALCHALABI-DOBSON/APR14/829-791
Pays : United Kingdom
Organisme : Medical Research Council
ID : G0500289
Pays : United Kingdom
Organisme : Wellcome Trust
Pays : United Kingdom
Organisme : Motor Neurone Disease Association
ID : SHAW/NOV14/985-797
Pays : United Kingdom
Organisme : Medical Research Council
ID : MR/L021803/1
Pays : United Kingdom
Organisme : Medical Research Council
ID : G0900635
Pays : United Kingdom
Organisme : Motor Neurone Disease Association
ID : SMITH/APR16/847-791
Pays : United Kingdom
Organisme : Medical Research Council
ID : MC_PC_17115
Pays : United Kingdom
Organisme : Medical Research Council
ID : G0600974
Pays : United Kingdom
Organisme : Medical Research Council
ID : MR/R024804/1
Pays : United Kingdom
Organisme : NIMH NIH HHS
ID : U01 MH115727
Pays : United States
Organisme : Medical Research Council
ID : G0900688
Pays : United Kingdom
Commentaires et corrections
Type : ErratumIn
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