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Cell-cycle dysregulation and anticancer therapy
Zoe A Stewart1, Matthew D Westfall, Jennifer A Pietenpol
1Department of Biochemistry, Center in Molecular Toxicology and the Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN 37232, USA.
Abstract:
Cell-cycle dysregulation is a hallmark of tumor cells. The ability of normal cells to undergo cell-cycle arrest after damage to DNA is crucial for the maintenance of genomic integrity. The biochemical pathways that stop the cell cycle in response to cellular stressors are called checkpoints. Defective checkpoint function results in genetic modifications that contribute to tumorigenesis. The regulation of checkpoint signaling also has important clinical implications because the abrogation of checkpoint function can alter the sensitivity of tumor cells to chemotherapeutics. Here, we provide an overview of the mechanisms that regulate the cell cycle, current anticancer therapies that target checkpoint signaling pathways, and strategies for the development of novel chemotherapeutic agents.
Insights
Cell-cycle checkpoints prevent genomic instability in normal cells but are often dysregulated in cancer. Targeting these checkpoints offers new strategies for cancer therapy.
Area of Science:
- Molecular Biology
- Cancer Biology
- Genetics
Background:
- Cell-cycle dysregulation is a key characteristic of cancer cells.
- Cell-cycle arrest following DNA damage is vital for maintaining genomic integrity.
- Checkpoint pathways regulate the cell cycle in response to stressors.
Purpose of the Study:
- To provide an overview of cell-cycle regulation mechanisms.
- To discuss current anticancer therapies targeting checkpoint signaling.
- To explore strategies for developing novel chemotherapeutic agents.
Main Methods:
- Literature review of cell-cycle regulation.
- Analysis of current checkpoint-targeting anticancer therapies.
- Exploration of future therapeutic strategies.
Main Results:
- Cell-cycle checkpoints are essential for preventing genetic alterations.
- Defective checkpoints contribute to cancer development (tumorigenesis).
- Checkpoint abrogation impacts cancer cell sensitivity to chemotherapy.
Conclusions:
- Understanding cell-cycle regulation is crucial for cancer treatment.
- Targeting checkpoint signaling pathways presents therapeutic opportunities.
- Novel chemotherapeutic agents can be developed by targeting these pathways.