Targeted resequencing reveals rare variants enrichment in multiple sclerosis susceptibility genes.
RGS1
interferon-β
multiple sclerosis
rare variants
single nucleotide polymorphisms
targeted DNA sequencing
Journal
Human mutation
ISSN: 1098-1004
Titre abrégé: Hum Mutat
Pays: United States
ID NLM: 9215429
Informations de publication
Date de publication:
07 2020
07 2020
Historique:
received:
17
06
2019
revised:
05
03
2020
accepted:
18
03
2020
pubmed:
21
3
2020
medline:
6
11
2021
entrez:
21
3
2020
Statut:
ppublish
Résumé
Although genome-wide association studies have identified a number of common variants associated with multiple sclerosis (MS) susceptibility, little is known about the relevance of rare variants. Here, we aimed to explore the role of rare variants in 14 MS risk genes (FCRL1, RGS1, TIMMDC1, HHEX, CXCR5, LTBR, TSFM, GALC, TRAF3, STAT3, TNFSF14, IFI30, CD40, and CYP24A1) by targeted resequencing in an Iberian population of 524 MS cases and 546 healthy controls. Four rare variants-enriched regions within CYP24A1, FCRL1, RGS1, and TRAF3 were identified as significantly associated with MS. Functional studies revealed significantly decreased regulator of G protein signaling 1 (RGS1) gene expression levels in peripheral blood mononuclear cells from MS patients with RGS1 rare variants compared to noncarriers, whereas no significant differences in gene expression were observed for CYP24A1, FCRL1, and TRAF3 between rare variants carriers and noncarriers. Immunophenotyping showed significant decrease in RGS1 expression in peripheral blood B lymphocytes from MS patients with RGS1 rare variants relative to noncarriers. Lastly, peripheral blood mononuclear cell from MS patients carrying RGS1 rare variants showed significantly lower induction of RGS1 gene expression by interferon-β compared to MS patients lacking RGS1 variants. The presence of rare variants in RGS1 reinforce the ideas of high genetic heterogeneity and a role of rare variants in MS pathogenesis.
Substances chimiques
FCRL1 protein, human
0
Membrane Proteins
0
RGS Proteins
0
RGS1 protein, human
0
TNF Receptor-Associated Factor 3
0
TRAF3 protein, human
0
CYP24A1 protein, human
EC 1.14.15.16
Vitamin D3 24-Hydroxylase
EC 1.14.15.16
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
1308-1320Informations de copyright
© 2020 Wiley Periodicals, Inc.
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