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Multi-omics and pathway analyses of genome-wide associations implicate regulation and immunity in verbal declarative memory performance.

TitleMulti-omics and pathway analyses of genome-wide associations implicate regulation and immunity in verbal declarative memory performance.
Publication TypeJournal Article
Year of Publication2024
AuthorsMei, H, Simino, J, Li, L, Jiang, F, Bis, JC, Davies, G, W Hill, D, Xia, C, Gudnason, V, Yang, Q, Lahti, J, Smith, JA, Kirin, M, De Jager, P, Armstrong, NJ, Ghanbari, M, Kolcic, I, Moran, C, Teumer, A, Sargurupremraj, M, Mahmud, S, Fornage, M, Zhao, W, Satizabal, CL, Polasek, O, Räikkönen, K, Liewald, DC, Homuth, G, Callisaya, M, Mather, KA, B Windham, G, Zemunik, T, Palotie, A, Pattie, A, van der Auwera, S, Thalamuthu, A, Knopman, DS, Rudan, I, Starr, JM, Wittfeld, K, Kochan, NA, Griswold, ME, Vitart, V, Brodaty, H, Gottesman, R, Cox, SR, Psaty, BM, Boerwinkle, E, Chasman, DI, Grodstein, F, Sachdev, PS, Srikanth, V, Hayward, C, Wilson, JF, Eriksson, JG, Kardia, SLR, Grabe, HJ, Bennett, DA, Ikram, AM, Deary, IJ, van Duijn, CM, Launer, L, Fitzpatrick, AL, Seshadri, S, Bressler, J, Debette, S, Mosley, TH
JournalAlzheimers Res Ther
Volume16
Issue1
Pagination14
Date Published2024 Jan 20
ISSN1758-9193
KeywordsAged, Cognition, Genome-Wide Association Study, Humans, Memory, MicroRNAs, Multiomics, Polymorphism, Single Nucleotide
Abstract<p><b>BACKGROUND: </b>Uncovering the functional relevance underlying verbal declarative memory (VDM) genome-wide association study (GWAS) results may facilitate the development of interventions to reduce age-related memory decline and dementia.</p><p><b>METHODS: </b>We performed multi-omics and pathway enrichment analyses of paragraph (PAR-dr) and word list (WL-dr) delayed recall GWAS from 29,076 older non-demented individuals of European descent. We assessed the relationship between single-variant associations and expression quantitative trait loci (eQTLs) in 44 tissues and methylation quantitative trait loci (meQTLs) in the hippocampus. We determined the relationship between gene associations and transcript levels in 53 tissues, annotation as immune genes, and regulation by transcription factors (TFs) and microRNAs. To identify significant pathways, gene set enrichment was tested in each cohort and meta-analyzed across cohorts. Analyses of differential expression in brain tissues were conducted for pathway component genes.</p><p><b>RESULTS: </b>The single-variant associations of VDM showed significant linkage disequilibrium (LD) with eQTLs across all tissues and meQTLs within the hippocampus. Stronger WL-dr gene associations correlated with reduced expression in four brain tissues, including the hippocampus. More robust PAR-dr and/or WL-dr gene associations were intricately linked with immunity and were influenced by 31 TFs and 2 microRNAs. Six pathways, including type I diabetes, exhibited significant associations with both PAR-dr and WL-dr. These pathways included fifteen MHC genes intricately linked to VDM performance, showing diverse expression patterns based on cognitive status in brain tissues.</p><p><b>CONCLUSIONS: </b>VDM genetic associations influence expression regulation via eQTLs and meQTLs. The involvement of TFs, microRNAs, MHC genes, and immune-related pathways contributes to VDM performance in older individuals.</p>
DOI10.1186/s13195-023-01376-6
Alternate JournalAlzheimers Res Ther
PubMed ID38245754
PubMed Central IDPMC10799499
Grant ListR01HL105756 / NH / NIH HHS / United States
1P20GM144041 / GM / NIGMS NIH HHS / United States
1P20GM144041 / GM / NIGMS NIH HHS / United States
ePub date: 
24/01