Evaluation of Genetic Variation Contributing to Differences in Gene Expression between Populations.

Evaluation of Genetic Variation Contributing to Differences in Gene Expression between Populations. Research Abstract Details 

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Evaluation of Genetic Variation Contributing to Differences in Gene Expression between Populations. Abstract Text:

Wei Zhang,Shiwei Duan,Emily O Kistner,Wasim K Bleibel,R Stephanie Huang,Tyson A Clark,Tina X Chen,Anthony C Schweitzer,John E Blume,Nancy J Cox,M Eileen Dolan,

Gene expression is a complex quantitative trait partially regulated by genetic variation in DNA sequence. Population differences in gene expression could contribute to some of the observed differences in susceptibility to common diseases and response to drug treatments. We characterized gene expression in the full set of HapMap lymphoblastoid cell lines derived from individuals of European and African ancestry for 9156 transcript clusters (gene-level) evaluated with the Affymetrix GeneChip Human Exon 1.0 ST Array. Gene expression was found to differ significantly between these samples for 383 transcript clusters. Biological processes including ribosome biogenesis and antimicrobial humoral response were found to be enriched in these differential genes, suggesting their possible roles in contributing to the population differences at a higher level than that of mRNA expression and in response to environmental information. Genome-wide association studies for local or distant genetic variants that correlate with the differentially expressed genes enabled identification of significant associations with one or more single-nucleotide polymorphisms (SNPs), consistent with the hypothesis that genetic factors and not simply population identity or other characteristics (age of cell lines, length of culture, etc.) contribute to differences in gene expression in these samples. Our results provide a comprehensive view of the genes differentially expressed between populations and the enriched biological processes involved in these genes. We also provide an evaluation of the contributions of genetic variation and nongenetic factors to the population differences in gene expression.

Evaluation of Genetic Variation Contributing to Differences in Gene Expression between Populations. Publishing Authors By Initials

W Zhang,S Duan,EO Kistner,WK Bleibel,RS Huang,TA Clark,TX Chen,AC Schweitzer,JE Blume,NJ Cox,ME Dolan,

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Evaluation of Genetic Variation Contributing to Differences in Gene Expression between Populations. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: American journal of human genetics

VOLUME: 82

Page Numbers: 631-40

Journal Abbreviation: Am. J. Hum. Genet.

ISSN: 1537-6605

DAY: 28

MONTH: 02

YEAR: 2008

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LANGUAGE: eng

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AFFILIATION: Department of Medicine, The University of Chicago, Chicago, IL 60637, USA.

Country: United States

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MEDLINETA: Am J Hum Genet

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