Journal
NATURE CHEMICAL BIOLOGY
Volume 16, Issue 7, Pages 716-724Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/s41589-020-0563-4
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Funding
- NIGMS NIH HHS [R35 GM127289] Funding Source: Medline
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This Review provides insights into transcriptional regulation, and vulnerabilities of cancer cells to disruption of cyclin-dependent kinase (CDK)-mediated regulation of Pol II transcription, revealed with small-molecule CDK inhibitors. Largely non-overlapping sets of cyclin-dependent kinases (CDKs) regulate cell division and RNA polymerase II (Pol II)-dependent transcription. Here we review the molecular mechanisms by which specific CDKs are thought to act at discrete steps in the transcription cycle and describe the recent emergence of transcriptional CDKs as promising drug targets in cancer. We emphasize recent advances in understanding the transcriptional CDK network that were facilitated by development and deployment of small-molecule inhibitors with increased selectivity for individual CDKs. Unexpectedly, several of these compounds have also shown selectivity in killing cancer cells, despite the seemingly universal involvement of their target CDKs during transcription in all cells. Finally, we describe remaining and emerging challenges in defining functions of individual CDKs in transcription and co-transcriptional processes and in leveraging CDK inhibition for therapeutic purposes.
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