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© Research
Publication : Cancer research

Drug resistance mechanisms in colorectal cancer dissected with cell type-specific dynamic logic models

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Cancer research - 31 Mar 2017

Eduati F, Doldàn-Martelli V, Klinger B, Cokelaer T, Sieber A, Kogera F, Dorel M, Garnett MJ, Blüthgen N, Saez-Rodriguez J

Link to Pubmed [PMID] – 28381545

Cancer Res. 2017 Apr;

Genomic features are used as biomarkers of sensitivity to kinase inhibitors used widely to treat human cancer, but effective patient stratification based on these principles remains limited in impact. Insofar as kinase inhibitors interfere with signaling dynamics, and, in turn, signaling dynamics affects inhibitor responses, we investigated associations in this study between cell-specific dynamic signaling pathways and drug sensitivity. Specifically, we measured 14 phosphoproteins under 43 different perturbed conditions (combinations of 5 stimuli and 7 inhibitors) in 14 colorectal cancer cell lines, building cell line-specific dynamic logic models of underlying signaling networks. Model parameters representing pathway dynamics were used as features to predict sensitivity to a panel of 27 drugs. Specific parameters of signaling dynamics correlated strongly with drug sensitivity for 14 of the drugs, 9 of which had no genomic biomarker. Following one of these associations, we validated a drug combination predicted to overcome resistance to MEK inhibitors by co-blockade of GSK3, which was not found based on associations with genomic data. These results suggest that, in order to better understand cancer resistance and move toward personalized medicine, it is essential to consider signaling network dynamics that can not be inferred from static genotypes.

https://www.ncbi.nlm.nih.gov/pubmed/28381545