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Methods for Multi-Omics Multi-Context Integrative Analysis
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  
Association analysis
키워드  
Integrative analysis
키워드  
Mendelian Randomization
키워드  
Multi-omics analysis
키워드  
Genetic variants
기타저자  
The University of Chicago Public Health Sciences
기본자료저록  
Dissertations Abstracts International. 85-12B.
전자적 위치 및 접속  
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MARC

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■006m          o    d                
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■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.

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