Abstract:
:Phosphorylation networks intimately regulate mechanisms of response to therapies. Mapping the phospho-catalytic profile of kinases in cells or tissues remains a challenge. Here, we introduce a practical high-throughput system to measure the enzymatic activity of kinases using biological peptide targets as phospho-sensors to reveal kinase dependencies in tumour biopsies and cell lines. A 228-peptide screen was developed to detect the activity of >60 kinases, including ABLs, AKTs, CDKs and MAPKs. Focusing on BRAFV600E tumours, we found mechanisms of intrinsic resistance to BRAFV600E-targeted therapy in colorectal cancer, including targetable parallel activation of PDPK1 and PRKCA. Furthermore, mapping the phospho-catalytic signatures of melanoma specimens identifies RPS6KB1 and PIM1 as emerging druggable vulnerabilities predictive of poor outcome in BRAFV600E patients. The results show that therapeutic resistance can be caused by the concerted upregulation of interdependent pathways. Our kinase activity-mapping system is a versatile strategy that innovates the exploration of actionable kinases for precision medicine.
journal_name
Nat Cell Bioljournal_title
Nature cell biologyauthors
Coppé JP,Mori M,Pan B,Yau C,Wolf DM,Ruiz-Saenz A,Brunen D,Prahallad A,Cornelissen-Steijger P,Kemper K,Posch C,Wang C,Dreyer CA,Krijgsman O,Lee PRE,Chen Z,Peeper DS,Moasser MM,Bernards R,van 't Veer LJdoi
10.1038/s41556-019-0328-zsubject
Has Abstractpub_date
2019-06-01 00:00:00pages
778-790issue
6eissn
1465-7392issn
1476-4679pii
10.1038/s41556-019-0328-zjournal_volume
21pub_type
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