Related Experiment Video

Updated: Jan 4, 2026

Studying Cell Cycle-regulated Gene Expression by Two Complementary Cell Synchronization Protocols
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Studying Cell Cycle-regulated Gene Expression by Two Complementary Cell Synchronization Protocols

Published on: June 6, 2017

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CDK4/6 inhibition in cancer: the cell cycle splicing connection

Karen E Sheppard1,2, Shatha AbuHammad1

  • 1Research Division, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.

Molecular & Cellular Oncology
|November 7, 2019
PubMed

Insights

Cyclin-dependent kinase 4/6 (CDK4/6) inhibitors impact melanoma treatment by regulating MDM4 oncogene and TP53 expression. Understanding this mechanism is key to overcoming resistance in cancer therapy.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cancer Therapeutics

Background:

  • Cyclin-dependent kinase 4/6 (CDK4/6) inhibitors are investigated for various cancers, including melanoma.
  • Mechanisms of resistance to CDK4/6 inhibitors in melanoma are not fully understood.
  • The interplay between CDK4/6, MDM4, and TP53 in melanoma warrants further investigation.

Purpose of the Study:

  • To elucidate the mechanism of action of CDK4/6 inhibitors in melanoma.
  • To investigate the regulation of mouse double minute 4 (MDM4) oncogene and tumor protein p53 (TP53) by CDK4/6 inhibitors.
  • To identify potential strategies for overcoming CDK4/6 inhibitor resistance.

Main Methods:

  • In vitro studies using melanoma cell lines.
  • Analysis of gene expression levels of MDM4 and TP53.
  • Assessment of protein levels and activity related to CDK4/6 signaling pathways.

Main Results:

  • CDK4/6 inhibitors were found to regulate the expression of the MDM4 oncogene.
  • The study revealed an effect of CDK4/6 inhibitors on tumor protein p53 (TP53) expression.
  • A novel mechanism linking CDK4/6 inhibition to MDM4 and TP53 regulation in melanoma was uncovered.

Conclusions:

  • CDK4/6 inhibitors exert regulatory effects on MDM4 and TP53 in melanoma.
  • This regulation represents a potential mechanism of action and resistance in melanoma treatment.
  • Further research into this pathway may lead to improved therapeutic strategies for melanoma.
Keywords:
CDK4CDK6MDM4PRMT5TP53acquired resistancemelanomap21pre-mRNA splicing

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