Altered gene expression in late-onset Alzheimer's disease due to SNPs within 3'UTR microRNA response elements.
Genomics
; 109(3-4): 177-185, 2017 07.
Article
em En
| MEDLINE
| ID: mdl-28286146
ABSTRACT
Late-onset Alzheimer's disease (LOAD) is a progressive and fatal neurodegenerative disease found in people older than 65years of age. Disease etiology is complex, as susceptibility has been linked to multiple gene variants conferred by single nucleotide polymorphisms (SNPs). However, the molecular mechanisms by which SNPs contribute to LOAD pathogenesis have not been extensively studied, particularly for SNPs within the 3' untranslated regions (3'UTRs), the hubs for microRNA binding. Therefore, we screened for SNPs within the 3'UTRs of LOAD-associated genes that may create or destroy microRNA response elements (MREs) and thus alter gene expression. This investigation adopted an in-silico approach that integrated structural and thermodynamic features of miRNA target binding with screening using CLIP-seq data, followed by network analysis. This strategy identified three 3'UTR SNPs, rs10876135, rs5848, and rs5786996 that may alter the respective binding sites for the miRNAs hsa-miR-197-5p, hsa-miR-185-5p, and hsa-miR-34a-5p, all of which are upregulated in LOAD. The functional significance of these MRE-SNPs was assessed by potential regulation of biological networks known to be associated with LOAD. This is the first study to demonstrate a possible role for above 3'UTR MRE-SNPs in aberrant expression of target genes with functional consequences for LOAD.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Predisposição Genética para Doença
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Regiões 3' não Traduzidas
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Elementos de Resposta
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Polimorfismo de Nucleotídeo Único
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Doença de Alzheimer
Limite:
Aged
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Aged80
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Humans
Idioma:
En
Revista:
Genomics
Assunto da revista:
GENETICA
Ano de publicação:
2017
Tipo de documento:
Article
País de afiliação:
Índia