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CDK9: A Comprehensive Review of Its Biology, and Its Role as a Potential Target for Anti-Cancer Agents
Abel Tesfaye Anshabo1, Robert Milne1, Shudong Wang1
1Drug Discovery and Development, Centre for Cancer Diagnostics and Therapeutics, Clinical and Health Sciences, University of South Australia, Adelaide, SA, Australia.
Abstract:
Cyclin-dependent kinases (CDKs) are proteins pivotal to a wide range of cellular functions, most importantly cell division and transcription, and their dysregulations have been implicated as prominent drivers of tumorigenesis. Besides the well-established role of cell cycle CDKs in cancer, the involvement of transcriptional CDKs has been confirmed more recently. Most cancers overtly employ CDKs that serve as key regulators of transcription (e.g., CDK9) for a continuous production of short-lived gene products that maintain their survival. As such, dysregulation of the CDK9 pathway has been observed in various hematological and solid malignancies, making it a valuable anticancer target. This therapeutic potential has been utilized for the discovery of CDK9 inhibitors, some of which have entered human clinical trials. This review provides a comprehensive discussion on the structure and biology of CDK9, its role in solid and hematological cancers, and an updated review of the available inhibitors currently being investigated in preclinical and clinical settings.
Insights
Cyclin-dependent kinases (CDKs) regulate cell division and transcription. Dysregulated CDK9 is crucial in cancer, driving tumor survival and making CDK9 inhibitors a promising therapeutic strategy.
Area of Science:
- Molecular Biology
- Oncology
- Biochemistry
Background:
- Cyclin-dependent kinases (CDKs) are critical regulators of cellular processes, including cell division and transcription.
- Dysregulation of CDKs is a significant factor in cancer development and progression.
- Transcriptional CDKs, particularly CDK9, play a vital role in maintaining cancer cell survival by regulating gene expression.
Purpose of the Study:
- To provide a comprehensive overview of CDK9 structure and biology.
- To elucidate the role of CDK9 in both solid and hematological malignancies.
- To review current CDK9 inhibitors in preclinical and clinical development.
Main Methods:
- Literature review of CDK9 structure, function, and involvement in cancer.
- Analysis of preclinical and clinical data on CDK9 inhibitors.
- Synthesis of information on CDK9 pathway dysregulation in various cancers.
Main Results:
- CDK9 is a key regulator of transcription essential for cancer cell survival.
- CDK9 pathway dysregulation is evident across diverse hematological and solid tumors.
- Several CDK9 inhibitors have demonstrated therapeutic potential and advanced to clinical trials.
Conclusions:
- CDK9 represents a significant therapeutic target for cancer treatment.
- Targeting CDK9 offers a promising strategy for combating various malignancies.
- Ongoing research and clinical trials are evaluating the efficacy of CDK9 inhibitors.
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