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Updated: Jul 19, 2026

Impedance-based Real-time Measurement of Cancer Cell Migration and Invasion
Published on: April 2, 2020
Interruption of cell transformation and cancer formation
Maurice S Fox1, Sidney Klawansky
1Department of Biology, Rm. 68-577a, M.I.T. Cambridge, MA 02139, USA. msfox@mit.edu
Abstract:
A review of the results of X-ray and chemical carcinogen induction of transformation of mouse cells supports a two-step epigenetic model of transformation. According to this model, exposure induces an epigenetic regulatory alteration that makes the cells hypermutable so that when the cell population inheriting this alteration becomes sufficiently large, the second step, a mutation to the transformant phenotype, becomes increasingly likely. The epigenetic alteration in X-ray-exposed mouse cells has been demonstrated to be reversible by brief exposure to certain protease inhibitors. If the rodent cell experiments constitute a valid system for studying human cancer, then this two-step model may herald rich opportunities for preventing and perhaps even treating cancer in humans.
Insights
Mouse cell transformation by X-rays and carcinogens suggests a two-step epigenetic model. This model proposes an initial epigenetic change leading to hypermutability, followed by mutation to a transformant phenotype, offering potential cancer prevention strategies.
Area of Science:
- Oncology
- Epigenetics
- Cell Biology
Background:
- Carcinogen exposure can induce cellular transformation, a key event in cancer development.
- Understanding the mechanisms of transformation is crucial for developing cancer prevention and treatment strategies.
Purpose of the Study:
- To review evidence supporting a two-step epigenetic model for mouse cell transformation induced by X-rays and chemical carcinogens.
- To explore the implications of this model for human cancer research and therapeutic interventions.
Main Methods:
- Review of existing research on X-ray and chemical carcinogen-induced cell transformation in mouse models.
- Analysis of experimental data demonstrating epigenetic alterations and their reversibility.
Main Results:
- Evidence supports a two-step epigenetic model of cell transformation.
- The initial step involves an epigenetic alteration causing hypermutability.
- This epigenetic alteration in X-ray-exposed cells is reversible with protease inhibitors.
Conclusions:
- The two-step epigenetic model provides a framework for understanding cell transformation.
- Reversibility of the epigenetic alteration suggests potential avenues for cancer prevention.
- Rodent cell transformation studies may offer valuable insights into human cancer biology and treatment.
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