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Related Concept Videos

The Cell Cycle Control System01:28

The Cell Cycle Control System

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The cell cycle regulation directs how a cell proceeds from one phase to the next and begins mitosis. The cell cycle control system includes intracellular regulatory molecules and external triggers. They provide "stop" or "advance" signals and operate at specific cell cycle stages termed checkpoints to ensure that a particular process is completed before the cell advances to the next phase.
Cyclins and cyclin-dependent kinases (Cdks) are the primary cell cycle regulators and...
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The Cell Cycle Control System02:11

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The cell cycle is an organized set of events that leads the cell to divide into two daughter cells, each containing chromosomes identical to the parent cell. It is the cell cycle that leads to the formation of an entire organism from a single-cell zygote. Besides, cell division also functions in the renewal or repair of tissues in adult multicellular eukaryotes. For example, in the bone marrow, the stem cells divide to form new blood cells. Although essential for several functions, cell...
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Molecular Factors Affecting Cell Division01:27

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Several external and internal factors influence the initiation and inhibition of cell division. For instance, the death of nearby cells or the release of human growth hormone (hGH) promotes cell division. In contrast, lack of hGH or crowding of cells can inhibit cell division.
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Inhibition of Cdk Activity02:34

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The orderly progression of the cell cycle depends on the activation of Cdk protein by binding to its cyclin partner. However, the cell cycle must be restricted when undergoing abnormal changes. Most cancers correlate to the deregulated cell cycle, and since Cdks are a central component of the cell cycle, Cdk inhibitors are extensively studied to develop anticancer agents. For instance, cyclin D associates with several Cdks, such as Cdk 4/6, to form an active complex. The cyclin D-Cdk4/6 complex...
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Updated: Mar 22, 2026

Spatial and Temporal Control of Murine Melanoma Initiation from Mutant Melanocyte Stem Cells
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Cell Cycle Regulation and Melanoma.

Wen Xu1, Grant McArthur2,3,4,5,6,7

  • 1Department of Medical Oncology, Peter MacCallum Cancer Centre, East Melbourne, Australia.

Current Oncology Reports
|April 24, 2016
PubMed
Summary

Targeting cell cycle regulation shows promise in melanoma treatment. CDK4/6 inhibitors offer improved efficacy and potential synergy with MAPK pathway therapies, especially in specific metastatic melanoma subsets.

Keywords:
Anti-mitotic agentsCDK4/6 inhibitorsCell cycle regulationChk1G1-S checkpointG2-M checkpointMK2Metastatic melanomaWEE1

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Area of Science:

  • Oncology
  • Cell Biology
  • Dermatology

Background:

  • Cell cycle dysregulation is a key factor in melanoma development.
  • Previous cell cycle inhibitors showed limited in vivo efficacy in unselected melanoma patients.
  • Targeting cell cycle checkpoints (G1-S, G2-M) and anti-mitotic strategies have shown preclinical promise.

Purpose of the Study:

  • To review recent preclinical and clinical advancements in cell cycle-targeted therapies for melanoma.
  • To highlight the potential of specific CDK4/6 inhibitors in melanoma treatment.
  • To explore synergistic combinations of CDK4/6 inhibitors with existing melanoma therapies.

Main Methods:

  • Review of preclinical studies on cell cycle inhibitors in melanoma models.
  • Analysis of clinical trial data for agents targeting cell cycle regulation in melanoma.
  • Evaluation of combination strategies, including CDK4/6 inhibitors with MAPK pathway agents.

Main Results:

  • Standalone cell cycle agents have shown modest in vivo efficacy in unselected melanoma patients.
  • Specific CDK4/6 inhibitors targeting the G1-S transition represent a significant advancement with an improved therapeutic index.
  • Potential synergistic effects are observed when combining CDK4/6 inhibitors with MAPK pathway therapies, particularly in NRAS and BRAF mutant melanomas.

Conclusions:

  • Cell cycle-targeted therapies, especially CDK4/6 inhibitors, are a promising area for melanoma treatment.
  • Combination strategies involving CDK4/6 inhibitors and MAPK pathway inhibitors may enhance efficacy in specific melanoma subsets.
  • Further clinical investigation is warranted to optimize the use of cell cycle-targeted therapies in melanoma management.