Genomic, Epigenomic, and Transcriptomic Mechanisms of Contributing to Alzheimer's Disease Risk in Diverse Ancestral Populations

不同祖先人群中阿尔茨海默病风险的基因组、表观基因组和转录组机制

• 批准号: 10301691
• 负责人: William S Bush
• 金额: $ 229.02万
• 依托单位: UNIVERSITY OF MIAMI SCHOOL OF MEDICINE
• 依托单位国家: 美国
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-08-15 至 2024-07-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/10301691
• 关键词: Address; African American; Alleles; Alternative Splicing; Alzheimer' s Disease; Alzheimer' s disease risk; Architecture; Bioinformatics; Biological; Biology; Caribbean region; Cognitive; Collection; Communities; Complement; Complex; DNA; DNA Methylation; Data; Data Set; Dementia; Development; Disease; Elderly; Epigenetic Process; Equilibrium; Ethnic group; Follow-Up Studies; Gene Expression; Genes; Genetic; Genetic Risk; Genetic Transcription; Genetic Variation; Genetic study; Genomic approach; Genomics; Genotype; Genotype-Tissue Expression Project; High-Throughput RNA Sequencing; Hispanic Americans; Hispanics; Individual; Methods; Methylation; Modeling; Molecular; Not Hispanic or Latino; Pathway interactions; Peripheral Blood Mononuclear Cell; Peru; Peruvian; Population; Population Heterogeneity; Process; Puerto Rico; Quantitative Trait Loci; RNA; RNA Splicing; Race; Regulation; Research; Resources; Role; Sampling; Site; Statistical Methods; Susceptibility Gene; Tissues; United States; Variant; Whole Blood; aged; base; case control; caucasian American; cell type; cohort; disorder control; disorder risk; epigenetic variation; epigenomics; ethnic diversity; functional genomics; genome sequencing; genome wide association study; genome wide methylation; genome-wide; genomic data; genomic locus; multi-ethnic; multiple omics; response; risk variant; single-cell RNA sequencing; trait; transcriptome; transcriptome sequencing; transcriptomics; whole genome

PROJECT SUMMARY Alzheimer disease (AD) is the leading cause of dementia in the elderly in the United States and occurs in all ethnic and racial groups. Although >20 susceptibility loci have been associated with AD, much of the genetic influence on AD remains unknown. This is particularly true for diverse ethnic populations such as Hispanics (HI) and African Americans (AA) that are underrepresented in most genetic studies compared to non-Hispanic Whites (NHW). Though emerging studies have begun to unravel some of the ancestry associated genetic risk of AD, understanding the role of DNA variation is only one critical step in understanding the complex underlying biology variants do not always provide direct information on the genes and mechanisms influenced. To expand the context of ongoing large-scale genomic genotyping and whole genome sequencing efforts to individuals of diverse ancestries, here we propose a transcriptomic, epigenomic, and genomic association study of NHW, AA, and HI from Puerto Rico (PR) and Peru (PER) addressing diverse admixed populations. Completion of this project will provide powerful functional genomic resources that could be applied to large existing and emerging AD datasets to better understand the biological impact of genetic variation on AD risk. Specifically, we will 1) generate whole-blood RNAseq, single-cell RNAseq, and DNA methylation datasets on existing collections of NHW, AA, PR, and PER AD cases and elderly cognitively normal controls; 2) identify transcriptomic and methylation differences including gene expression, alternative splicing, allele specific expression, and site and regional methylation differences between NHW, AA, and HI cases and controls that may drive disease risk differences between the ancestries; 3) combine these data with available DNA genotyping/whole genome sequencing data to identify population and disease-specific expression/methylation QTLs; 4) generate the first multiethnic imputation panel of expression/methylation QTL effects for estimating gene expression traits in diverse (NWH, AA, HI) AD datasets; and 5) apply these panels to a broader set of thousands of multi-ethnic genotyped samples. The multi-omics approach outlined here will provide much needed functional context to the ongoing DNA variant discovery efforts in these populations while addressing the important problem of disparities in AD research. These studies will broaden the spectrum of AD risk to gene expression and methylation and expand existing genomic efforts to a broader AD community.

项目总结

项目成果

Generalizability of Tau and Amyloid Plasma Biomarkers in Alzheimer's Disease Cohorts of Diverse Genetic Ancestries.

Tau 和淀粉样蛋白血浆生物标志物在不同遗传祖先的阿尔茨海默病队列中的普遍性。

• DOI: 10.1101/2024.04.10.24305617
• 发表时间: 2024
• 期刊: medRxiv : the preprint server for health sciences
• 作者: Griswold,AnthonyJ;Rajabli,Farid;Gu,Tianjie;Arvizu,Jamie;Golightly,CharlesG;Whitehead,PatriceL;Hamilton-Nelson,KaraL;Adams,LarryD;Sanchez,JoseJavier;Mena,PedroR;Starks,TakiyahD;Illanes-Manrique,Maryenela;Silva,Concepcion;B
• 通讯作者: B