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Methods for Multi-Omics Multi-Context Integrative Analysis
Methods for Multi-Omics Multi-Context Integrative Analysis
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20250211151045
- ISBN
- 9798382775111
- DDC
- 574
- 저자명
- Lu, Yihao.
- 서명/저자
- Methods for Multi-Omics Multi-Context Integrative Analysis
- 발행사항
- [Sl] : The University of Chicago, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 149 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 85-12, Section: B.
- 주기사항
- Advisor: Chen, Lin S.
- 학위논문주기
- Thesis (Ph.D.)--The University of Chicago, 2024.
- 초록/해제
- 요약Genome-wide association studies (GWAS) have identified hundreds of thousands of associations between genetic variants and human complex traits/diseases. To functionally annotate the trait/disease-associated variants, extensive efforts are made to study the genetic effects on downstream molecular phenotypes in a wide variety of tissue types and cell types. Genetic effects on functionally related 'omic' traits often co-occur in relevant cellular contexts, such as tissues. In Chapter 2, motivated by the multi-tissue methylation quantitative trait loci (mQTLs) and expression QTLs (eQTLs) analysis of Genotype-Tissue Expression project, we propose X-ING (Cross-INtegrative Genomics) for cross-omics and cross-context integrative analysis. A major innovation of the method is that it models latent association indicators instead of effect sizes and uses multi-view learning to account for major patterns among latent indicators across omics data types and tissue types. This facilitates integrative analysis of different data types of different effect distributions. Moving beyond the integrative association analysis, in Chapter 3 we develop a multi-context multivariable integrative Mendelian randomization framework, mintMR, for mapping expression and molecular traits as joint exposures. The proposed method overcomes the unique challenges in mapping risk genes, and these challenges are under-addressed by conventional Mendelian randomization methods. MintMR improves the estimation of sparse tissue-specific causal effects of multiple genes with a limited number of IVs by simultaneously modeling the latent tissue indicators of disease relevance across multiple gene regions and subsequently improving the estimation of latent disease-relevant probabilities. In Chapter 4, we further expand the framework to study risk genes in specific cell types using deep learning methods. Single-cell RNA sequencing (scRNA-seq) enables the high-throughput profiling of gene expression specific to cell types. We proposed a deep-cellMR method capturing the nonlinear and complex dependencies across cell types and further improving the estimation of cell-type-specific effect of each gene in each cell. The proposed methods in this dissertation can be broadly applied to map multi-omics QTLs and study risk genes for complex traits and diseases, and they can be applied to many other data types for conducting integrative association and causal analyses.
- 일반주제명
- Biostatistics
- 일반주제명
- Cellular biology
- 일반주제명
- Genetics
- 키워드
- Genetic variants
- 기타저자
- The University of Chicago Public Health Sciences
- 기본자료저록
- Dissertations Abstracts International. 85-12B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■006m o d
■007cr#unu||||||||
■020 ▼a9798382775111
■035 ▼a(MiAaPQ)AAI31140596
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a574
■1001 ▼aLu, Yihao.
■24510▼aMethods for Multi-Omics Multi-Context Integrative Analysis
■260 ▼a[Sl]▼bThe University of Chicago▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a149 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 85-12, Section: B.
■500 ▼aAdvisor: Chen, Lin S.
■5021 ▼aThesis (Ph.D.)--The University of Chicago, 2024.
■520 ▼aGenome-wide association studies (GWAS) have identified hundreds of thousands of associations between genetic variants and human complex traits/diseases. To functionally annotate the trait/disease-associated variants, extensive efforts are made to study the genetic effects on downstream molecular phenotypes in a wide variety of tissue types and cell types. Genetic effects on functionally related 'omic' traits often co-occur in relevant cellular contexts, such as tissues. In Chapter 2, motivated by the multi-tissue methylation quantitative trait loci (mQTLs) and expression QTLs (eQTLs) analysis of Genotype-Tissue Expression project, we propose X-ING (Cross-INtegrative Genomics) for cross-omics and cross-context integrative analysis. A major innovation of the method is that it models latent association indicators instead of effect sizes and uses multi-view learning to account for major patterns among latent indicators across omics data types and tissue types. This facilitates integrative analysis of different data types of different effect distributions. Moving beyond the integrative association analysis, in Chapter 3 we develop a multi-context multivariable integrative Mendelian randomization framework, mintMR, for mapping expression and molecular traits as joint exposures. The proposed method overcomes the unique challenges in mapping risk genes, and these challenges are under-addressed by conventional Mendelian randomization methods. MintMR improves the estimation of sparse tissue-specific causal effects of multiple genes with a limited number of IVs by simultaneously modeling the latent tissue indicators of disease relevance across multiple gene regions and subsequently improving the estimation of latent disease-relevant probabilities. In Chapter 4, we further expand the framework to study risk genes in specific cell types using deep learning methods. Single-cell RNA sequencing (scRNA-seq) enables the high-throughput profiling of gene expression specific to cell types. We proposed a deep-cellMR method capturing the nonlinear and complex dependencies across cell types and further improving the estimation of cell-type-specific effect of each gene in each cell. The proposed methods in this dissertation can be broadly applied to map multi-omics QTLs and study risk genes for complex traits and diseases, and they can be applied to many other data types for conducting integrative association and causal analyses.
■590 ▼aSchool code: 0330.
■650 4▼aBiostatistics
■650 4▼aCellular biology
■650 4▼aGenetics
■653 ▼aAssociation analysis
■653 ▼aIntegrative analysis
■653 ▼aMendelian Randomization
■653 ▼aMulti-omics analysis
■653 ▼aGenetic variants
■690 ▼a0308
■690 ▼a0379
■690 ▼a0369
■71020▼aThe University of Chicago▼bPublic Health Sciences.
■7730 ▼tDissertations Abstracts International▼g85-12B.
■790 ▼a0330
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17160586▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


