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Drug2ways: Reasoning over causal paths in biological networks for drug discovery
Authors:Daniel Rivas-Barragan,Sarah Mubeen,Francesc Guim Bernat,Martin Hofmann-Apitius,Daniel Domingo-Fern  ndez
Affiliation:1. Barcelona Supercomputing Center, Barcelona, Spain;2. Computer Architecture Department, Universitat Politècnica de Catalunya, Barcelona, Spain;3. Department of Bioinformatics, Fraunhofer Institute for Algorithms and Scientific Computing, Sankt Augustin, Germany;4. Fraunhofer Center for Machine Learning, Germany;5. Intel Corporation Iberia, Madrid, Spain;University of Pittsburgh, UNITED STATES
Abstract:Elucidating the causal mechanisms responsible for disease can reveal potential therapeutic targets for pharmacological intervention and, accordingly, guide drug repositioning and discovery. In essence, the topology of a network can reveal the impact a drug candidate may have on a given biological state, leading the way for enhanced disease characterization and the design of advanced therapies. Network-based approaches, in particular, are highly suited for these purposes as they hold the capacity to identify the molecular mechanisms underlying disease. Here, we present drug2ways, a novel methodology that leverages multimodal causal networks for predicting drug candidates. Drug2ways implements an efficient algorithm which reasons over causal paths in large-scale biological networks to propose drug candidates for a given disease. We validate our approach using clinical trial information and demonstrate how drug2ways can be used for multiple applications to identify: i) single-target drug candidates, ii) candidates with polypharmacological properties that can optimize multiple targets, and iii) candidates for combination therapy. Finally, we make drug2ways available to the scientific community as a Python package that enables conducting these applications on multiple standard network formats.
Keywords:
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