Omics-Based Interaction Framework - a systems model to reveal molecular drivers of synergy
Jezreel Pantaleon Garcia,
Vikram V. Kulkarni,
Tanner C. Reese,
Saima J. Wase,
Mauricio S. Caetano,
Seyed Javad Moghaddam,
Faye M. Johnson,
Scott E Evans
Posted 18 Apr 2020
bioRxiv DOI: 10.1101/2020.04.16.041350
Posted 18 Apr 2020
Bioactive molecule library screening strategies may empirically identify effective combination therapies. However, without a systems theory to interrogate synergistic responses, the molecular mechanisms underlying favorable drug-drug interactions remain unclear, precluding rational design of combination therapies. Here, we introduce Omics-Based Interaction Framework (OBIF) to reveal molecular drivers of synergy through integration of statistical and biological interactions in supra-additive biological responses. OBIF performs full factorial analysis of feature expression data from single vs. dual factor exposures to identify molecular clusters that reveal synergy-mediating pathways, functions and regulators. As a practical demonstration, OBIF analyzed a therapeutic dyad of immunostimulatory small molecules that induces synergistic protection against influenza A pneumonia. OBIF analysis of transcriptomic and proteomic data identified biologically relevant, unanticipated cooperation between RelA and cJun that we subsequently confirmed to be required for the synergistic antiviral protection. To demonstrate generalizability, OBIF was applied to data from a diverse array of Omics platforms and experimental conditions, successfully identifying the molecular clusters driving their synergistic responses. Hence, OBIF is a phenotype-driven systems model that supports multiplatform exploration of synergy mechanisms. ### Competing Interest Statement S.E.E. is an author on U.S. patent 8,883,174 Stimulation of Innate Resistance of the Lungs to Infection with Synthetic Ligands and owns stock in Pulmotect Inc., which holds the commercial options on these patent disclosures. All other authors declare that no conflict of interest exists.
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