Collaborative RO1 with NCBO

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Collaborative RO1 with NCBO Semantics and Services Enabled Problem Solving Environment For Trypanosoma Cruzi Amit Sheth (PI), Rick Tarleton, Prashant Doshi, Mark Musen, Natasha Noy, Satya Sahoo, D. Brent Weatherly, Pablo Mendes Driving Biological Problem Trypanosoma Cruzi (T. cruzi): T. cruzi is a protozoan parasite and a key causative agent of Chagas disease. Chagas afflicts 18 million people in Latin America leading to heart disease and sudden death. Driving factors in T. cruzi research: Identification of vaccine candidates in T. cruzi Diagnostic techniques for identification of best antigens Identify genes for knockout in T. cruzi Questions related to these factors involve tedious sifting of vast amounts of information of different types (genomic, proteomic, publications). This problem is prevalent for other organisms as well. Specific Objectives of Project Development and Use of a Suite of Ontologies Using a Phased Approach Ontologies enable a semantic approach to information management and analysis. Phased approach promotes reuse of existing ontologies for developing new ones Semantic Annotation of Experimental Data Using Multiple Ontologies Promotes integration of disparate data sources at multiple levels. Diverse ontologies will be aligned Efficient Query Processing, Visualization and Extensibility Expressive querying on semantically annotated data using query builders and tools for intuitive visualization of results Semantics-driven PSE for T. cruzi hosted in BioPortal at NCBO Generic framework that can be specialized for other pathogens. T. cruzi data available from the University of Georgia Preliminary Work T. cruzi Research: Large amounts of experimental genomic and proteomic data on T. cruzi has been produced. For example, proteomic data includes: Whole proteome analysis of 4 life cycle stages (600 files) Proteomics of glycoproteins from 3 life cycle stages (27 files) Quantitative proteome analysis of plasma membrane proteins from 3 life cycle stages (48 files) Proteomics of RNA binding proteins from 2 life cycle stages (24 files) These data are from over 700 individual experiments in eight separate proteome projects. These analyses resulted in the accumulation of greater than 1 million tandem mass spectra and 12,000 individual peptide identifications. Semantic Bioinformatics for Glycoproteomics: Ontology Development and Alignment In previous projects we have developed 3 deep domain ontologies – GlycO, PropreO and EnzyO. Participated in designing and developing tools for ontology engineering and alignment such as Protégé, PROMPT and OPTIMA Scientific Data Annotation Scientific Workflows for High Throughput Proteomics Proposed Research Problem Solving Environment for T. cruzi Intuitive querying of multiple sets of heterogeneous databases Formulate scientific workflows to test hypotheses Cognizance of usability issues to promote ease of use among biologists Querying multiple sets of heterogeneous data Involves: Developing new ontologies for T. cruzi lifecycle stages and using existing ontologies Extend ProPreO and GlycO Automatically aligning parts of different ontologies that target similar domains Extend PROMPT and integrate OPTIMA Semantic annotation of experimental data Automatic entity identification and disambiguation Extending query languages such as SPARQL Formulate Workflows For Hypotheses Testing Development of semantic Web services Expose common operations such as BLAST as Web services Utilize SA-WSDL for describing Web services Utilize Web services within queries Techniques for automatically composing semantic Web services Extend Haley and investigate new approaches for composition Figure: Whole organism – all life cycle stages of T. cruzi Figure: Schematic representation of the semantic T. cruzi PSE illustrating the simple Web based user interface, the underlying suite of ontologies and data/information sources Evaluation Validation Several example queries will be selected for validation Correctness of the answers provided by the PSE to the queries will be rigorously tested Usability and computation time will be qualitatively and quantitatively measured and compared with previous manually intense approaches Exploration New metabolic pathways will be investigated and auxiliary questions will be answered PSE will facilitate the discovery of new potential therapeutic and immunological targets within the T. cruzi biology Figure: System architecture of the PSE Acknowledgment This project is supported by grant R01HL087795 from NHLBI. The content is solely the responsibility of the authors and does not necessarily represent the official views of NIH.