Coming Full Circle: The Genetics of Gene Expression
Posted May 08, 2007
The availability of DNA sequence information, combined with high-throughput functional genomics technologies like microarrays, allows reasearchers to simultaneously monitor the expression of thousands of genes as RNA. The abundance of various RNA transcripts specifies the proteins and non-coding RNAs that define different cells and tissues. In the past few years, researchers have recognized that gene expression is itself a rich, quantitative phenotype that they can analyze using genetic tools. Such "genetical genomics," also known as "genetics of gene expression," was the subject of a March 1, 2006, symposium sponsored by the Systems Biology Discussion Group. Three speakers described how turning the genetics onto itself leads to new insights into how expression is regulated, the complex genetic networks that underlie disease, and potential targets for treatment.
Use the tabs above to find a meeting report and multimedia from this event.
A system for automatically extracting, analyzing, visualizing, and integrating molecular pathway data from the research literature.
Genetics Embraces Expression
A 2005 "Hot Papers" story from The Scientist by David Secko on genetical genomics.
Burdick JT, Chen WM, Abecasis GR, Cheung VG. 2006. In silico method for inferring genotypes in pedigrees. Nat. Genet. 38: 1002-1004.
Cheung VG, Conlin LK, Weber TM, et al. 2003. Natural variation in human gene expression assessed in lymphoblastoid cells. Nat. Genet. 33: 422-425.
Cheung VG, Spielman RS, Ewens KG, et al. 2005. Mapping determinants of human gene expression by regional and genome-wide association. Nature 437: 1365-1369.
Morley M, Molony CM, Weber TM, et al. 2004. Genetic analysis of genome-wide variation in human gene expression. Nature 430: 743-747.
Krauthammer M, Kaufmann CA, Gilliam TC, Rzhetsky A. 2004. Molecular triangulation: bridging linkage and molecular-network information for identifying candidate genes in Alzheimer's disease. Proc. Natl. Acad. Sci. USA 101: 15148-15153. FULL TEXT
Cervino AC, Li G, Edwards S, et al. 2005. Integrating QTL and high-density SNP analyses in mice to identify Insig2 as a susceptibility gene for plasma cholesterol levels. Genomics 86: 505-517.
Mehrabian M, Allayee H, Stockton J, et al. 2005. Integrating genotypic and expression data in a segregating mouse population to identify 5-lipoxygenase as a susceptibility gene for obesity and bone traits. Nat. Genet. 37: 1224-1233.
Schadt EE, Lamb J, Yang X, et al. 2005. An integrative genomics approach to infer causal associations between gene expression and disease. Nat. Genet. 37: 710-717.
Schadt EE. 2005. Exploiting naturally occurring DNA variation and molecular profiling data to dissect disease and drug response traits. Curr. Opin. Biotechnol. 16: 647-654.
Wang S, Yehya N, Schadt EE, et al. 2006. Genetic and genomic analysis of a fat mass trait with complex inheritance reveals marked sex specificity. PLoS Genet. 2: e15. (PDF, 2.13 MB) FULL TEXT
Vivian G. Cheung, MD
Vivian Cheung is an associate professor of pediatrics at the University of Pennsylvania School of Medicine. She is affiliated with graduate study groups in cell and molecular biology, and genomics and computational biology. In the lab she directs, she and her associates study the genetic basis of human phenotypes and traits using genome-wide approaches. Her projects include study of the genetics of gene expression and of genetic radiosensitivity in humans, and she has developed an original type of genetic mapping called direct IBD mapping. Cheung earned her MD at Tufts University
T. Conrad Gilliam, PhD
T. Conrad Gilliam is professor and chair of the Department of Human Genetics at the University of Chicago. Gilliam has led international studies to map disease loci for all three forms of spinal muscular atrophy and an X-liked form of parkinsonism and to identify and characterize disease genes for Wilson disease, two forms of epilepsy, and retinitis pigmentosa. He currently investigates the genetic basis of common heritable disorders including: schizophrenia, autism, anxiety disorder, bipolar disorder, Alzheimer's disease and cardiovascular disease. Gilliam received his undergraduate and graduate degrees in biochemistry from Clemson University and the University of Missouri. He did his post-doctoral training at the University of London and Harvard University mapping the genetic loci for cystic fibrosis and Huntington's disease. In 1987 he was recruited to Columbia University where he was the John E. Born Professor of Genetics and Development and director of the Columbia Genome Center until 2004.
Eric E. Schadt, PhD
Eric Schadt joined Rosetta in November 1999 where he founded bioinformatics and computational genomics groups to mine large scale sets of data aimed at experimentally annotating the human genome. After Rosetta was acquired by Merck, Schadt formed a genetics department within the Molecular Profiling Department at Merck, in which the primary mission is elucidating common human diseases and drug response using novel integrative genomics approaches based on genetic and molecular profiling data. His research has helped define a new field in statistical genetics—the genetics of gene expression, and has led to a number of discoveries relating to the causes of common human diseases. Schadt also holds an affiliate professor position in the departments of Biostatistics and Pathology at the University of Washington in Seattle. Prior to joining Rosetta/Merck, Schadt was a senior research scientist at Roche Bioscience. He received his BS in applied mathematics/computer science from California Polytechnic State University, his MA in pure mathematics from UCD, and his PhD in bio-mathematics from UCLA (requiring PhD candidacy in molecular biology and mathematics).
Don Monroe is a science writer based in Murray Hill, New Jersey. After getting a PhD in physics from MIT, he spent more than fifteen years doing research in physics and electronics technology at Bell Labs. He writes on biology, physics, and technology.