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Full-Text Articles in Life Sciences
Genetic Architecture Of Gene Expression Traits Across Diverse Populations, Lauren S. Mogil, Angela Andaleon, Alexa Badalamenti, Scott P. Dickinson, Xiuqing Guo, Jerome I. Rotter, W. C. Johnson, Hae Kyung Im, Yongmei Liu, Heather E. Wheeler
Genetic Architecture Of Gene Expression Traits Across Diverse Populations, Lauren S. Mogil, Angela Andaleon, Alexa Badalamenti, Scott P. Dickinson, Xiuqing Guo, Jerome I. Rotter, W. C. Johnson, Hae Kyung Im, Yongmei Liu, Heather E. Wheeler
Bioinformatics Faculty Publications
For many complex traits, gene regulation is likely to play a crucial mechanistic role. How the genetic architectures of complex traits vary between populations and subsequent effects on genetic prediction are not well understood, in part due to the historical paucity of GWAS in populations of non-European ancestry. We used data from the MESA (Multi-Ethnic Study of Atherosclerosis) cohort to characterize the genetic architecture of gene expression within and between diverse populations. Genotype and monocyte gene expression were available in individuals with African American (AFA, n = 233), Hispanic (HIS, n = 352), and European (CAU, n = 578) ancestry. …
Exploring The Phenotypic Consequences Of Tissue Specific Gene Expression Variation Inferred From Gwas Summary Statistics, Alvaro N. Barbeira, Scott P. Dickinson, Rodrigo Bonazzola, Jiamao Zheng, Heather E. Wheeler, Jason M. Torres, Eric S. Torstenson, Kaanan P. Shah, Tzintzuni Garcia, Todd L. Edwards, Eli A. Stahl, Laura M. Huckins, Gtex Consortium, Dan L. Nicolae, Nancy J. Cox, Hae Kyung Im
Exploring The Phenotypic Consequences Of Tissue Specific Gene Expression Variation Inferred From Gwas Summary Statistics, Alvaro N. Barbeira, Scott P. Dickinson, Rodrigo Bonazzola, Jiamao Zheng, Heather E. Wheeler, Jason M. Torres, Eric S. Torstenson, Kaanan P. Shah, Tzintzuni Garcia, Todd L. Edwards, Eli A. Stahl, Laura M. Huckins, Gtex Consortium, Dan L. Nicolae, Nancy J. Cox, Hae Kyung Im
Biology: Faculty Publications and Other Works
Scalable, integrative methods to understand mechanisms that link genetic variants with phenotypes are needed. Here we derive a mathematical expression to compute PrediXcan (a gene mapping approach) results using summary data (S-PrediXcan) and show its accuracy and general robustness to misspecified reference sets. We apply this framework to 44 GTEx tissues and 100+ phenotypes from GWAS and meta-analysis studies, creating a growing public catalog of associations that seeks to capture the effects of gene expression variation on human phenotypes. Replication in an independent cohort is shown. Most of the associations are tissue specific, suggesting context specificity of the trait etiology. …
Maternal High-Fat Diet Associated With Altered Gene Expression, Dna Methylation, And Obesity Risk In Mouse Offspring, Madeline Rose Keleher, Rabab Zaidi, Shyam Shah, M. Elsa Oakley, Cassondra Pavlatos, Samir El Idrissi, Xiaoyun Xing, Daofeng Li, Ting Wang, James M. Cheverud
Maternal High-Fat Diet Associated With Altered Gene Expression, Dna Methylation, And Obesity Risk In Mouse Offspring, Madeline Rose Keleher, Rabab Zaidi, Shyam Shah, M. Elsa Oakley, Cassondra Pavlatos, Samir El Idrissi, Xiaoyun Xing, Daofeng Li, Ting Wang, James M. Cheverud
Biology: Faculty Publications and Other Works
We investigated maternal obesity in inbred SM/J mice by assigning females to a high-fat diet or a low-fat diet at weaning, mating them to low-fat-fed males, cross-fostering the offspring to low-fat-fed SM/J nurses at birth, and weaning the offspring onto a high-fat or low-fat diet. A maternal high-fat diet exacerbated obesity in the high-fat-fed daughters, causing them to weigh more, have more fat, and have higher serum levels of leptin as adults, accompanied by dozens of gene expression changes and thousands of DNA methylation changes in their livers and hearts. Maternal diet particularly affected genes involved in RNA processing, immune …