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Network-based elucidation of colon cancer drug resistance by phosphoproteomic time-series analysis
- PMID: 36824919
- PMCID: PMC9949144
- DOI: 10.1101/2023.02.15.528736
Network-based elucidation of colon cancer drug resistance by phosphoproteomic time-series analysis
Update in
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Network-based elucidation of colon cancer drug resistance mechanisms by phosphoproteomic time-series analysis.Nat Commun. 2024 May 9;15(1):3909. doi: 10.1038/s41467-024-47957-3. Nat Commun. 2024. PMID: 38724493 Free PMC article.
Abstract
Aberrant signaling pathway activity is a hallmark of tumorigenesis and progression, which has guided targeted inhibitor design for over 30 years. Yet, adaptive resistance mechanisms, induced by rapid, context-specific signaling network rewiring, continue to challenge therapeutic efficacy. By leveraging progress in proteomic technologies and network-based methodologies, over the past decade, we developed VESPA-an algorithm designed to elucidate mechanisms of cell response and adaptation to drug perturbations-and used it to analyze 7-point phosphoproteomic time series from colorectal cancer cells treated with clinically-relevant inhibitors and control media. Interrogation of tumor-specific enzyme/substrate interactions accurately inferred kinase and phosphatase activity, based on their inferred substrate phosphorylation state, effectively accounting for signal cross-talk and sparse phosphoproteome coverage. The analysis elucidated time-dependent signaling pathway response to each drug perturbation and, more importantly, cell adaptive response and rewiring that was experimentally confirmed by CRISPRko assays, suggesting broad applicability to cancer and other diseases.
Conflict of interest statement
Declaration of Interests A.C. is founder, equity holder, and consultant of DarwinHealth Inc, a company that has licensed some of the algorithms used in this manuscript from Columbia University. Columbia University is also an equity holder in DarwinHealth Inc and assignee of patent US10,790,040, which covers some components of the algorithms used in this manuscript. The other authors declare no competing interests.
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