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Mouse Models as a Tool for Understanding Progression in BrafV600E-Driven Thyroid Cancers
Iñigo Landa1, Jeffrey A Knauf1,2
1Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
Endocrinology and Metabolism (Seoul, Korea)
|February 21, 2019
Summary
Next-generation sequencing (NGS) advances understanding of thyroid cancer genetics, confirming key BRAF and RAS alterations. Genetically engineered mouse models (GEMMs) are crucial for studying BRAF-driven thyroid cancer progression.
Area of Science:
- Oncology
- Genetics
- Molecular Biology
Background:
- Next-generation sequencing (NGS) has significantly advanced the understanding of genetic alterations in thyroid cancer.
- Key oncogenic drivers, including BRAF and RAS proto-oncogenes, are frequently altered across all stages of thyroid cancer.
- NGS confirms previously identified alterations in TP53 and PIK3CA, and reveals novel mutations in TERT promoter and SWI/SNF complex.
Purpose of the Study:
- To review the role of genetic alterations in thyroid cancer initiation and progression.
- To discuss the development and application of genetically engineered mouse models (GEMMs) for studying BRAF-driven thyroid cancer.
- To explore how novel genetic alterations contribute to the progression of BRAF-driven thyroid cancers.
Main Methods:
- Genomic analysis using next-generation sequencing (NGS).
- Development and utilization of genetically engineered mouse models (GEMMs).
- Review of existing literature on thyroid cancer genetics and experimental models.
Main Results:
- NGS confirms high frequency of BRAF and RAS alterations in thyroid cancer.
- NGS validates TP53 inactivation and PIK3CA activation in advanced thyroid cancers.
- Novel alterations in TERT promoter and SWI/SNF complex are implicated in BRAF-driven thyroid cancer progression.
Conclusions:
- Genetic alterations, particularly BRAF mutations, are central to thyroid cancer development and progression.
- GEMMs are valuable tools for investigating thyroid tumorigenesis and testing therapeutic strategies.
- Understanding these genetic events is crucial for developing targeted therapies for thyroid cancer.
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