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Targeting CDK4/6 for Anticancer Therapy

Jiating Qi1, Zhuqing Ouyang2

  • 1The Second Clinical College, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.

Biomedicines
|March 25, 2022
PubMed

Insights

Cyclin-dependent kinase 4/6 (CDK4/6) inhibitors are vital cancer therapies. This review covers CDK4/6 targeting, drug resistance mechanisms, and novel strategies like combination therapy and PROTACs for improved cancer treatment.

Area of Science:

  • Oncology
  • Molecular Biology
  • Pharmacology

Background:

  • Cyclin-dependent kinase 4/6 (CDK4/6) are crucial regulators of the cell cycle.
  • CDK4/6 are established therapeutic targets for various cancers.
  • Diverse strategies exist to modulate CDK4/6 activity, including genetic and pharmacological approaches.

Purpose of the Study:

  • To provide a comprehensive overview of the current landscape of CDK4/6 targeting in cancer therapy.
  • To elucidate the mechanisms underlying therapeutic resistance to CDK4/6 inhibitors.
  • To explore emerging strategies for overcoming drug resistance and advancing CDK4/6-targeted treatments.

Main Methods:

  • Review of existing literature on CDK4/6 inhibitors, CRISPR, siRNA, and PROTACs.
  • Analysis of mechanisms of action for small molecule inhibitors and drug resistance pathways.
  • Discussion of combination therapies and proteolysis-targeting chimeras (PROTACs) as resistance-combating strategies.

Main Results:

  • Small molecule inhibitors targeting CDK4/6 are a cornerstone of cancer treatment.
  • Drug resistance to CDK4/6 inhibitors is a significant clinical challenge.
  • Combination therapies and novel degraders like PROTACs show promise in overcoming resistance.

Conclusions:

  • CDK4/6 remain critical targets in oncology, with ongoing research into optimizing their therapeutic use.
  • Understanding and overcoming drug resistance are paramount for durable responses.
  • Future directions include exploring advanced therapeutic modalities and combination strategies to enhance efficacy and broaden patient benefit.
Keywords:
CDK4/6PROTACabemaciclibcancerdrug resistancepalbociclibribociclibsmall molecular inhibitortrilaciclib

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