New Computational Tools Developed by Mount Sinai Scientists Yield Superior Genome Analysis Results
Scientists from the Icahn School of Medicine at Mount Sinai have developed and publicly released new data analysis software that could help genomics researchers identify genetic drivers of disease with greater efficiency and accuracy. These tools were published yesterday in PLoS Computational Biology and on November 25th in Scientific Reports, a Nature publication.
MEGENA (for Multiscale Embedded Gene Co-expression Network Analysis) projects gene expression data onto a three dimensional sphere, allowing scientists to study hierarchical organization patterns in complex networks that are characteristic of diseases such as cancer, obesity, and Alzheimer’s. Tested on data from The Cancer Genome Atlas (TCGA), MEGENA identified novel regulatory targets in breast and lung cancers, outperforming other co-expression analysis methods.
The second tool, SuperExactTest, establishes the very first theoretical framework for assessing the statistical significance of multi-set intersections and enables users to compare very large sets of data, such as gene sets produced from genome-wide association studies (GWAS) and differential expression analysis. Scientists ran SuperExactTest on existing TCGA and GWAS data, identifying a core set of cancer genes and detecting related patterns among complex diseases. Both tools come from the Multiscale Network Modeling Laboratory led by Bin Zhang, PhD, Associate Professor in the Department of Genetics and Genomic Sciences.
“These tools fill important and unmet needs in genomics,” said Dr. Zhang, the senior author of the two papers. “MEGENA will help scientists flesh out novel pathways and key targets in complex diseases, while SuperExactTest will provide a clearer understanding of the genome by comparing a large number of gene signatures.”
“Our team is dedicated to crafting high-performance analysis tools and to sharing those resources with the broader genomics community to help us all generate the best possible results,” said Eric Schadt, PhD, the Jean C. and James W. Crystal Professor of Genomics at the Icahn School of Medicine at Mount Sinai, and Founding Director of the Icahn Institute for Genomics and Multiscale Biology. “These new tools demonstrate thoughtful and creative solutions to computational challenges faced by scientists around the world, and I look forward to seeing what the community will accomplish with them.”
MEGENA and SuperExactTest are available as R packages at Dr. Zhang’s website (http://research.mssm.edu/multiscalenetwork/Resources.html) and CRAN (the Comprehensive R Archive Network), a repository of open-source software (https://cran.r-project.org/).
Won-Min Song and Bin Zhang. Multiscale Embedded Gene Co-expression Network Analysis. PLoS Computational Biology 11(11): e1004574. doi:10.1371/journal.pcbi.1004574 (http://journals.plos.org/ploscompbiol/article?id=10.1371/journal.pcbi.1004574)
Minghui Wang, Yongzhong Zhao, and Bin Zhang. Efficient Test and Visualization of Multi-Set Intersections. Scientific Reports 5:16923. doi: 10.1038/srep16923 (http://www.nature.com/articles/srep16923)
About the Mount Sinai Health System
The Mount Sinai Health System is New York City's largest academic medical system, encompassing eight hospitals, a leading medical school, and a vast network of ambulatory practices throughout the greater New York region. Mount Sinai is a national and international source of unrivaled education, translational research and discovery, and collaborative clinical leadership ensuring that we deliver the highest quality care—from prevention to treatment of the most serious and complex human diseases. The Health System includes more than 7,200 physicians and features a robust and continually expanding network of multispecialty services, including more than 400 ambulatory practice locations throughout the five boroughs of New York City, Westchester, and Long Island. The Mount Sinai Hospital is ranked No. 14 on U.S. News & World Report's "Honor Roll" of the Top 20 Best Hospitals in the country and the Icahn School of Medicine as one of the Top 20 Best Medical Schools in country. Mount Sinai Health System hospitals are consistently ranked regionally by specialty and our physicians in the top 1% of all physicians nationally by U.S. News & World Report.