title: The Comparative Toxicogenomics Database's 10th year anniversary: update 2015.
abstract: Ten years ago, the Comparative Toxicogenomics Database (CTD; http://ctdbase.org/) was developed out of a need to formalize, harmonize and centralize the information on numerous genes and proteins responding to environmental toxic agents across diverse species. CTD's initial approach was to facilitate comparisons of nucleotide and protein sequences of toxicologically significant genes by curating these sequences and electronically annotating them with chemical terms from their associated references. Since then, however, CTD has vastly expanded its scope to robustly represent a triad of chemical-gene, chemical-disease and gene-disease interactions that are manually curated from the scientific literature by professional biocurators using controlled vocabularies, ontologies and structured notation. Today, CTD includes 24 million toxicogenomic connections relating chemicals/drugs, genes/proteins, diseases, taxa, phenotypes, Gene Ontology annotations, pathways and interaction modules. In this 10th year anniversary update, we outline the evolution of CTD, including our increased data content, new 'Pathway View' visualization tool, enhanced curation practices, pilot chemical-phenotype results and impending exposure data set. The prototype database originally described in our first report has transformed into a sophisticated resource used actively today to help scientists develop and test hypotheses about the etiologies of environmentally influenced diseases.
authors.affiliation: Department of Biological Sciences, North Carolina State University, Raleigh, NC 27695-7617, USA apdavis3@ncsu.edu.
authors.forename: Allan Peter
authors.initials: AP
authors.lastname: Davis
authors.affiliation: Department of Biological Sciences, North Carolina State University, Raleigh, NC 27695-7617, USA.
authors.forename: Cynthia J
authors.initials: CJ
authors.lastname: Grondin
authors.affiliation: Department of Biological Sciences, North Carolina State University, Raleigh, NC 27695-7617, USA.
authors.forename: Kelley
authors.initials: K
authors.lastname: Lennon-Hopkins
authors.affiliation: Department of Biological Sciences, North Carolina State University, Raleigh, NC 27695-7617, USA.
authors.forename: Cynthia
authors.initials: C
authors.lastname: Saraceni-Richards
authors.affiliation: Department of Biological Sciences, North Carolina State University, Raleigh, NC 27695-7617, USA.
authors.forename: Daniela
authors.initials: D
authors.lastname: Sciaky
authors.affiliation: Department of Bioinformatics, The Mount Desert Island Biological Laboratory, Salisbury Cove, ME 04672, USA.
authors.forename: Benjamin L
authors.initials: BL
authors.lastname: King
authors.affiliation: Department of Biological Sciences, North Carolina State University, Raleigh, NC 27695-7617, USA.
authors.forename: Thomas C
authors.initials: TC
authors.lastname: Wiegers
authors.affiliation: Department of Biological Sciences, North Carolina State University, Raleigh, NC 27695-7617, USA.
authors.forename: Carolyn J
authors.initials: CJ
authors.lastname: Mattingly
mesh_terms: D062126:Databases, Chemical / Q000266:history; D004194:Disease / Q000209:etiology / Q000235:genetics; D023281:Genomics / Q000266:history; D049674:History, 21st Century; D020407:Internet; D010641:Phenotype; D043922:Toxicogenetics / Q000266:history