Kinome state is predictive of cell viability in pancreatic cancer tumor and cancer-associated fibroblast cell lines

Author:

Berginski Matthew E.1,Jenner Madison R.12,Joisa Chinmaya U.3,Herrera Loeza Gabriela2,Golitz Brian T.4,Lipner Matthew B.12,Leary Jack R.25,Rashid Naim26,Johnson Gary L.12,Yeh Jen Jen127,Gomez Shawn M.13

Affiliation:

1. Department of Pharmacology, University of North Carolina at Chapel Hill, Chapel Hill, United States of America

2. Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States of America

3. Joint Department of Biomedical Engineering at the University of North Carolina at Chapel Hill and North Carolina State University, Chapel Hill, United States of America

4. Eshelman Institute for Innovation, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States of America

5. Department of Biostatistics, University of Florida, Gainsville, FL, United States of America

6. Department of Biostatistics, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States of America

7. Department of Surgery, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States of America

Abstract

Numerous aspects of cellular signaling are regulated by the kinome—the network of over 500 protein kinases that guides and modulates information transfer throughout the cell. The key role played by both individual kinases and assemblies of kinases organized into functional subnetworks leads to kinome dysregulation driving many diseases, particularly cancer. In the case of pancreatic ductal adenocarcinoma (PDAC), a variety of kinases and associated signaling pathways have been identified for their key role in the establishment of disease as well as its progression. However, the identification of additional relevant therapeutic targets has been slow and is further confounded by interactions between the tumor and the surrounding tumor microenvironment. In this work, we attempt to link the state of the human kinome, or kinotype, with cell viability in treated, patient-derived PDAC tumor and cancer-associated fibroblast cell lines. We applied classification models to independent kinome perturbation and kinase inhibitor cell screen data, and found that the inferred kinotype of a cell has a significant and predictive relationship with cell viability. We further find that models are able to identify a set of kinases whose behavior in response to perturbation drive the majority of viability responses in these cell lines, including the understudied kinases CSNK2A1/3, CAMKK2, and PIP4K2C. We next utilized these models to predict the response of new, clinical kinase inhibitors that were not present in the initial dataset for model devlopment and conducted a validation screen that confirmed the accuracy of the models. These results suggest that characterizing the perturbed state of the human protein kinome provides significant opportunity for better understanding of signaling behavior and downstream cell phenotypes, as well as providing insight into the broader design of potential therapeutic strategies for PDAC.

Funder

National Institutes of Health

Publisher

PeerJ

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