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Updated: Jun 28, 2026

Testing Targeted Therapies in Cancer using Structural DNA Alteration Analysis and Patient-Derived Xenografts
Published on: July 25, 2020
Genetic modelling of the PTEN/AKT pathway in cancer research
Oliver Renner1, Carmen Blanco-Aparicio, Amancio Carnero
1Experimental Therapeutics Programme, Spanish National Cancer Centre (CNIO), Madrid, Spain.
Abstract:
The focus on targeted therapies has been fuelled by extensive research on molecular pathways and their role in tumorigenesis. Novel models of human cancer have been created to evaluate the role of specific genes in the different stages of cancer. Currently, mouse modelling of human cancer is possible through the expression of oncogenes, specific genetic mutations or the inactivation of tumour suppressor genes, and these models have begun to provide us with an understanding of the molecular pathways involved in tumour initiation and progression at the physiological level. Additionally, these mouse models serve as an excellent system to evaluate the efficacy of currently developed molecular targeted therapies and identify new potential targets for future therapies. The PTEN/AKT pathway is implicated in signal transduction through tyrosine kinase receptors and heterotrimeric G protein-linked receptors. Deregulation of the PTEN/AKT pathway is a common event in human cancer. Despite the abundant literature, the physiological role of each element of the pathway has begun to be uncovered thanks to genetically engineered mice. This review will summarise some of the key animal models which have helped us to understand this signalling network and its contribution to tumorigenesis.
Insights
Genetically engineered mouse models are crucial for understanding cancer development and evaluating targeted therapies. These models illuminate the PTEN/AKT pathway
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Targeted cancer therapies are driven by research into molecular pathways in tumorigenesis.
- Genetically engineered mouse models are vital for studying cancer initiation, progression, and evaluating therapeutic strategies.
- The PTEN/AKT pathway is frequently dysregulated in human cancers and plays a key role in signal transduction.
Purpose of the Study:
- To review key animal models used to understand the PTEN/AKT signaling network.
- To summarize how these models contribute to comprehending tumorigenesis.
- To highlight the role of mouse models in advancing targeted cancer therapy research.
Main Methods:
- Utilizing genetically engineered mouse models that express oncogenes, harbor specific mutations, or have inactivated tumor suppressor genes.
- Physiological-level investigation of molecular pathways involved in tumor initiation and progression.
- Evaluation of molecular targeted therapies and identification of new therapeutic targets.
Main Results:
- Genetically engineered mice have elucidated the physiological roles of PTEN/AKT pathway components.
- These models provide insights into how pathway dysregulation contributes to cancer development.
- Mouse models facilitate the assessment of targeted therapy efficacy.
Conclusions:
- Genetically engineered mouse models are indispensable tools for cancer research.
- Understanding the PTEN/AKT pathway through these models aids in developing novel targeted therapies.
- Animal models are critical for advancing our knowledge of cancer biology and treatment.
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