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Inducible Mouse Models for Cancer Drug Target Validation
1Department of Developmental Biology and Genomics, College of Veterinary Medicine, Seoul National University and Korea Mouse Phenotyping Center, Seoul, Korea.
Abstract:
Genetically-engineered mouse (GEM) models have provided significant contributions to our understanding of cancer biology and developing anticancer therapeutic strategies. The development of GEM models that faithfully recapitulate histopathological and clinical features of human cancers is one of the most pressing needs to successfully conquer cancer. In particular, doxycycline-inducible transgenic mouse models allow us to regulate (induce or suppress) the expression of a specific gene of interest within a specific tissue in a temporal manner. Leveraging this mouse model system, we can determine whether the transgene expression is required for tumor maintenance, thereby validating the transgene product as a target for anticancer drug development (target validation study). In addition, there is always a risk of tumor recurrence with cancer therapy. By analyzing recurrent tumors derived from fully regressed tumors after turning off transgene expression in tumor-bearing mice, we can gain an insight into the molecular basis of how tumor cells escape from their dependence on the transgene (tumor recurrence study). Results from such studies will ultimately allow us to predict therapeutic responses in clinical settings and develop new therapeutic strategies against recurrent tumors. The aim of this review is to highlight the significance of doxycycline-inducible transgenic mouse models in studying target validation and tumor recurrence.
Insights
Doxycycline-inducible transgenic mouse models are crucial for cancer research. These genetically-engineered mouse models aid in validating cancer drug targets and understanding tumor recurrence for improved therapies.
Area of Science:
- Oncology
- Genetics
- Pharmacology
Background:
- Genetically-engineered mouse (GEM) models are vital for advancing cancer biology understanding and therapeutic strategy development.
- Faithfully recapitulating human cancer features in GEM models is essential for effective cancer conquest.
- Doxycycline-inducible transgenic mouse models offer temporal control over gene expression in specific tissues.
Approach:
- Utilize doxycycline-inducible GEM models to assess gene dependency in tumor maintenance for target validation.
- Investigate tumor recurrence by analyzing regressed tumors after transgene suppression to understand escape mechanisms.
- Analyze recurrent tumors to gain insights into molecular basis of tumor cell escape from transgene dependence.
Key Points:
- Doxycycline-inducible GEM models enable precise regulation of gene expression for target validation studies.
- These models facilitate the study of tumor recurrence by examining molecular mechanisms of therapeutic escape.
- Insights from these studies can predict clinical therapeutic responses and guide development of novel strategies against recurrent tumors.
Conclusions:
- Doxycycline-inducible transgenic mouse models are significant tools for cancer target validation and tumor recurrence studies.
- This review highlights the importance of these models in advancing cancer research and drug development.
- Understanding tumor recurrence mechanisms through these models can lead to improved patient outcomes and therapeutic strategies.
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