Novel Machado-Joseph disease-modifying genes and pathways identified by whole-exome sequencing
| Autor: | Mafalda Raposo, Conceição Bettencourt, Ana Rosa Vieira Melo, Ana F. Ferreira, Isabel Alonso, Paulo Silva, João Vasconcelos, Teresa Kay, Maria Luiza Saraiva-Pereira, Marta D. Costa, Daniela Vilasboas-Campos, Bruno Filipe Bettencourt, Jácome Bruges-Armas, Henry Houlden, Peter Heutink, Laura Bannach Jardim, Jorge Sequeiros, Patrícia Maciel, Manuela Lima |
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| Přispěvatelé: | Comprehensive Health Research Centre (CHRC) - pólo NMS, Centro de Estudos de Doenças Crónicas (CEDOC), NOVA Medical School|Faculdade de Ciências Médicas (NMS|FCM) |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
congenital
hereditary and neonatal diseases and abnormalities Genotype Idade de início Sequenciamento completo do exoma Neurosciences. Biological psychiatry. Neuropsychiatry Nerve Tissue Proteins Genetic modifier Doença de Machado-Joseph genetics [DNA Helicases] SCA3 ddc:570 genetics [Machado-Joseph Disease] Exome Sequencing Humans Age of Onset Alleles genetics [Nerve Tissue Proteins] DNA Helicases Age at onset Machado-Joseph Disease Genes modificadores Polyglutamine disease Neurology pathology [Machado-Joseph Disease] MJD Spinocerebellar ataxia RC321-571 |
| Zdroj: | Neurobiology of disease 162, 105578 (2022). doi:10.1016/j.nbd.2021.105578 Repositório Institucional da UFRGS Universidade Federal do Rio Grande do Sul (UFRGS) instacron:UFRGS Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP Neurobiology of Disease, Vol 162, Iss, Pp 105578-(2022) |
| Popis: | Funding Information: This work was funded by FEDER - Fundo Europeu de Desenvolvimento Regional funds through the COMPETE 2020 - Operacional Programme for Competitiveness and Internationalisation (POCI), Portugal 2020 , and by Portuguese funds through FCT - Fundação para a Ciência e a Tecnologia / Ministério da Ciência, Tecnologia e Ensino Superior in the framework of the project PTDC/DTP-PIC/2638/2017 ( POCI-01-0145-FEDER-016592 ); GenomePT ( POCI-01-0145-FEDER-022184 ); ICVS Scientific Microscopy Platform , member of the national infrastructure PPBI - Portuguese Platform of Bioimaging ( PPBI-POCI-01-0145-FEDER-022122 ; by National funds , through the Foundation for Science and Technology (FCT) - project UIDB/50026/2020 and UIDP/50026/2020 ; and by the project NORTE-01-0145-FEDER-000013 , supported by Norte Portugal Regional Operational Programme (NORTE 2020), under the PORTUGAL 2020 Partnership Agreement, through the European Regional Development Fund (ERDF) . MR is supported by FCT ( CEECIND/03018/2018 ). ARVM ( SFRH/BD/129547/2017 ) and AFF ( SFRH/BD/121101/2016 ) are supported by a PhD grant financed by FCT . CB is supported by the Multiple System Atrophy Trust and Alzheimer's Research UK . MDC received funding from National Ataxia Foundation (NAF) and from FCT ( SFRH/BPD/101925/2014 ); DV-C received a grant from FCT ( SFRH/BD/147826/2019 ). Publisher Copyright: © 2021 Machado-Joseph disease (MJD/SCA3) is a neurodegenerative polyglutamine disorder exhibiting a wide spectrum of phenotypes. The abnormal size of the (CAG)n at ATXN3 explains ~55% of the age at onset variance, suggesting the involvement of other factors, namely genetic modifiers, whose identification remains limited. Our aim was to find novel genetic modifiers, analyse their epistatic effects and identify disease-modifying pathways contributing to MJD variable expressivity. We performed whole-exome sequencing in a discovery sample of four age at onset concordant and four discordant first-degree relative pairs of Azorean patients, to identify candidate variants which genotypes differed for each discordant pair but were shared in each concordant pair. Variants identified by this approach were then tested in an independent multi-origin cohort of 282 MJD patients. Whole-exome sequencing identified 233 candidate variants, from which 82 variants in 53 genes were prioritized for downstream analysis. Eighteen disease-modifying pathways were identified; two of the most enriched pathways were relevant for the nervous system, namely the neuregulin signaling and the agrin interactions at neuromuscular junction. Variants at PARD3, NFKB1, CHD5, ACTG1, CFAP57, DLGAP2, ITGB1, DIDO1 and CERS4 modulate age at onset in MJD, with those identified in CFAP57, ACTG1 and DIDO1 showing consistent effects across cohorts of different geographical origins. Network analyses of the nine novel MJD modifiers highlighted several important molecular interactions, including genes/proteins previously related with MJD pathogenesis, namely between ACTG1/APOE and VCP/ITGB1. We describe novel pathways, modifiers, and their interaction partners, providing a broad molecular portrait of age at onset modulation to be further exploited as new disease-modifying targets for MJD and related diseases. publishersversion published |
| Databáze: | OpenAIRE |
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