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Updated: Apr 18, 2026
Primary Tumor and MEF Cell Isolation to Study Lung Metastasis
Published on: May 20, 2015
Methods to study primary tumor cells and residual tumor cells in mouse models of oncogene dependence
Caroline Botta1, Cedric Darini, Guillaume Darrasse-Jèze
1Institut de Recherches Cliniques de Montréal, Université de Montréal, 110 avenue des Pins Ouest, lab 6125, Montreal, QC, Canada, H2w 1R7.
Abstract:
The studies of oncogene dependence are aimed to understand an unfortunate and puzzling aspect of targeted anticancer treatments-their progression to drug resistance. Drug resistance develops from a pool of cells that survive the original treatment, called minimal residual disease. Mouse models based on tetracycline-dependent expression of transgenic oncogenes are used to imitate targeted oncogene blockade and to reproduce minimal residual disease in humans. Here we describe a novel method for generating oncogene-dependent mammary tumors using somatic transfer of transactivator-containing retroviruses into transgenic mice with tetracycline-dependent oncogenes and a method for measuring continuous mitotic activity in epithelial cells in real time.
Insights
Researchers developed a new method to create oncogene-dependent mammary tumors in mice, aiding the study of drug resistance in targeted cancer therapies and minimal residual disease.
Area of Science:
- Oncology
- Molecular Biology
- Cancer Research
Background:
- Targeted anticancer treatments face challenges with drug resistance.
- Drug resistance arises from surviving cancer cells, termed minimal residual disease.
- Existing mouse models use tetracycline-dependent oncogenes to study oncogene blockade and minimal residual disease.
Purpose of the Study:
- To develop a novel method for generating oncogene-dependent mammary tumors.
- To investigate the mechanisms of drug resistance in targeted cancer therapies.
- To establish a system for studying minimal residual disease in a preclinical setting.
Main Methods:
- Somatic transfer of transactivator-containing retroviruses into transgenic mice.
- Utilizing mice with tetracycline-dependent oncogenes for tumor induction.
- Developing a method for real-time measurement of mitotic activity in epithelial cells.
Main Results:
- Successfully generated oncogene-dependent mammary tumors.
- Established a novel preclinical model for studying targeted therapy resistance.
- Developed a technique to monitor cellular proliferation dynamics.
Conclusions:
- The novel method provides a valuable tool for cancer research.
- This model can advance the understanding of drug resistance and minimal residual disease.
- Further studies can utilize this model to explore new therapeutic strategies.
