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Freeing the brake: Proliferation needs primary cilium to disassemble
Priyadarshini Halder1, Shilpa Khatun, Shubhra Majumder
1Department of Life Sciences, Presidency University, Kolkata 700 073, India.
Journal of Biosciences
|October 14, 2020
Summary
Primary cilia, cell antennae, are lost during cell division. Cilia loss in cancer cells may drive tumor growth, impacting cell cycle regulation and proliferation.
Area of Science:
- Cell Biology
- Molecular Biology
- Cancer Research
Background:
- Primary cilia are microtubule-based organelles involved in cell signaling and sensory functions.
- Their assembly and disassembly are linked to cell cycle regulation in vertebrate cells.
- Loss of primary cilia is observed in many cancers, but their role in tumorigenesis is complex.
Purpose of the Study:
- To review recent advancements in understanding the temporal coordination between ciliary disassembly and cell cycle progression.
- To explore how primary cilia loss contributes to tumorigenesis in epithelial cancers.
Main Methods:
- Literature review of recent studies on primary cilia, cell cycle, and cancer.
- Analysis of signaling pathways involved in ciliary dynamics and cell proliferation.
- Focus on mechanisms linking cilia loss to cancer development.
Main Results:
- Primary cilia disassembly often precedes cell cycle re-entry and proliferation.
- While cilia loss can support tumorigenesis, they can also promote it via signaling pathways.
- Specific mechanisms of cilia loss in various epithelial cancers are highlighted.
Conclusions:
- The dynamic regulation of primary cilia is crucial for cell cycle control.
- Cilia loss is a significant factor in epithelial cancer development, acting through multiple mechanisms.
- Further research into ciliary disassembly and its role in cancer is warranted.
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