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Quantifying CDK inhibitor selectivity in live cells
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Journal Article
Quantifying CDK inhibitor selectivity in live cells
2020
Overview
Concerted multidisciplinary efforts have led to the development of Cyclin-Dependent Kinase inhibitors (CDKi’s) as small molecule drugs and chemical probes of intracellular CDK function. However, conflicting data has been reported on the inhibitory potency of CDKi’s and a systematic characterization of affinity and selectivity against intracellular CDKs is lacking. We have developed a panel of cell-permeable energy transfer probes to quantify target occupancy for all 21 human CDKs in live cells, and present a comprehensive evaluation of intracellular isozyme potency and selectivity for a collection of 46 clinically-advanced CDKi’s and tool molecules. We observed unexpected intracellular activity profiles for a number of CDKi’s, offering avenues for repurposing of highly potent molecules as probes for previously unreported targets. Overall, we provide a broadly applicable method for evaluating the selectivity of CDK inhibitors in living cells, and present a refined set of tool molecules to study CDK function.
Cyclin-dependent kinase (CDK) inhibitors are widely used both in the clinic and for basic research aimed at dissecting the specific cellular functions of specific CDKs. Here, the authors report the development of a panel of fluorescent reporter probes and provide a comprehensive profile of the inhibitory activity of several CDK inhibitors towards all 21 CDKs in living cells.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
/ 14
/ 14/33
/ 49/47
/ 9/10
/ Cell Cycle Checkpoints - drug effects
/ Cyclin-Dependent Kinase Inhibitor Proteins - pharmacology
/ Cyclin-dependent kinase inhibitors
/ Cyclin-Dependent Kinases - antagonists & inhibitors
/ Enzyme Inhibitors - pharmacology
/ Humanities and Social Sciences
/ Humans
/ Kinases
/ Probes
/ Science
