Null and missense mutations of ERI1 cause a recessive phenotypic dichotomy in humans.
ERI1
exoribonuclease
ribosomopathy
short stature
skeletal dysplasia
spondyloepimetaphyseal dysplasia
Journal
American journal of human genetics
ISSN: 1537-6605
Titre abrégé: Am J Hum Genet
Pays: United States
ID NLM: 0370475
Informations de publication
Date de publication:
06 07 2023
06 07 2023
Historique:
received:
13
01
2023
revised:
31
05
2023
accepted:
01
06
2023
pmc-release:
06
01
2024
medline:
10
7
2023
pubmed:
24
6
2023
entrez:
23
6
2023
Statut:
ppublish
Résumé
ERI1 is a 3'-to-5' exoribonuclease involved in RNA metabolic pathways including 5.8S rRNA processing and turnover of histone mRNAs. Its biological and medical significance remain unclear. Here, we uncover a phenotypic dichotomy associated with bi-allelic ERI1 variants by reporting eight affected individuals from seven unrelated families. A severe spondyloepimetaphyseal dysplasia (SEMD) was identified in five affected individuals with missense variants but not in those with bi-allelic null variants, who showed mild intellectual disability and digital anomalies. The ERI1 missense variants cause a loss of the exoribonuclease activity, leading to defective trimming of the 5.8S rRNA 3' end and a decreased degradation of replication-dependent histone mRNAs. Affected-individual-derived induced pluripotent stem cells (iPSCs) showed impaired in vitro chondrogenesis with downregulation of genes regulating skeletal patterning. Our study establishes an entity previously unreported in OMIM and provides a model showing a more severe effect of missense alleles than null alleles within recessive genotypes, suggesting a key role of ERI1-mediated RNA metabolism in human skeletal patterning and chondrogenesis.
Identifiants
pubmed: 37352860
pii: S0002-9297(23)00202-1
doi: 10.1016/j.ajhg.2023.06.001
pmc: PMC10357479
pii:
doi:
Substances chimiques
Exoribonucleases
EC 3.1.-
Histones
0
RNA, Ribosomal, 5.8S
0
RNA
63231-63-0
RNA, Messenger
0
ERI1 protein, human
EC 3.1.-
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
1068-1085Informations de copyright
Copyright © 2023 American Society of Human Genetics. Published by Elsevier Inc. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of interests The Department of Molecular and Human Genetics at Baylor College of Medicine receives revenue from clinical genetic testing completed at Baylor Genetics Laboratories.
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