Gene Expression in RET/PTC3 and E7 Transgenic Mouse Thyroids: RET/PTC3 But Not E7 Tumors Are Partial and Transient Models of Human Papillary Thyroid Cancers
Copyright policy )Gene Expression in RET/PTC3 and E7 Transgenic Mouse Thyroids: RET/PTC3 But Not E7 Tumors Are Partial and Transient Models of Human Papillary Thyroid Cancers
We studied gene expression profiles in two mouse models of human thyroid carcinoma: the Tg-RET/PTC3 (RP3) and Tg-E7 mice. RP3 fusion gene is the most frequent mutation found in the first wave post-Chernobyl papillary thyroid cancers (PTCs). E7 is an oncoprotein derived from the human papillomavirus 16 responsible for most cervical carcinoma in women. Both transgenic mice develop thyroid hyperplasia followed by solid differentiated carcinoma in older animals. To understand the different steps leading to carcinoma, we analyzed thyroid gene expression in both strains at different ages by microarray technology. Important biological processes were differentially regulated in the two tumor types. In E7 thyroids, cell cycle was the most up-regulated process, an observation consistent with the huge size of these tumors. In RP3 thyroids, contrary to E7 tumors, several human PTC characteristics were observed: overexpression of many immune-related genes, regulation of human PTC markers, up-regulation of EGF-like growth factors and significant regulation of angiogenesis and extracellular matrix remodeling-related genes. However, similarities were incomplete; they did not concern the overall gene expression and were not conserved in old animals. Therefore, RP3 tumors are partial and transient models of human PTC. They constitute a good model, especially in young animals, to study the respective role of the biological processes shared with human PTC and will allow testing drugs targeting these validated variables.
- University Federico II of Naples Italy
- Université Libre de Bruxelles Belgium
- Amgen (United States) United States
- Thomas Jefferson University United States
Male, Papillomavirus E7 Proteins, PROTEIN, Inbred C57BL, Transgenic, Mice, Thyroid Gland -- immunology, Tumor Markers, Oncogene Proteins, Neovascularization, Pathologic, FOLLICULAR VARIANT; HIGH PREVALENCE; BRAF MUTATIONS; PCR ANALYSIS; CARCINOMAS; REARRANGEMENTS; ONCOGENE; PROTEIN; CELLS; NEOPLASMS, Cell Cycle -- physiology, Cell Cycle, REARRANGEMENTS, Sciences bio-médicales et agricoles, Proto-Oncogene Proteins c-ret -- genetics, Cell Division -- physiology, Gene Expression Regulation, Neoplastic, Phenotype, CARCINOMAS, Female, Cell Division, NEOPLASMS, Thyroid Neoplasms -- physiopathology, Pathologic -- genetics, Mice, Transgenic, ONCOGENE, Papillary -- pathology, HIGH PREVALENCE, Biomarkers, Tumor, Animals, Humans, Thyroid Neoplasms -- pathology, Neovascularization, Thyroid Neoplasms -- genetics, Up-Regulation -- physiology, Neoplastic, Papillary -- physiopathology, Animal, Pathologic -- physiopathology, Gene Expression Profiling, Carcinoma, Proto-Oncogene Proteins c-ret, Oncogene Proteins, Viral, Biological, Carcinoma, Papillary, Mice, Inbred C57BL, Thyroid Gland -- pathology, Thyroid Gland -- physiology, Disease Models, Animal, Gene Expression Regulation, BRAF MUTATIONS, Disease Models, CELLS, Papillary -- genetics, Viral -- genetics, Pathologic -- pathology, FOLLICULAR VARIANT, Extracellular Space, PCR ANALYSIS
Male, Papillomavirus E7 Proteins, PROTEIN, Inbred C57BL, Transgenic, Mice, Thyroid Gland -- immunology, Tumor Markers, Oncogene Proteins, Neovascularization, Pathologic, FOLLICULAR VARIANT; HIGH PREVALENCE; BRAF MUTATIONS; PCR ANALYSIS; CARCINOMAS; REARRANGEMENTS; ONCOGENE; PROTEIN; CELLS; NEOPLASMS, Cell Cycle -- physiology, Cell Cycle, REARRANGEMENTS, Sciences bio-médicales et agricoles, Proto-Oncogene Proteins c-ret -- genetics, Cell Division -- physiology, Gene Expression Regulation, Neoplastic, Phenotype, CARCINOMAS, Female, Cell Division, NEOPLASMS, Thyroid Neoplasms -- physiopathology, Pathologic -- genetics, Mice, Transgenic, ONCOGENE, Papillary -- pathology, HIGH PREVALENCE, Biomarkers, Tumor, Animals, Humans, Thyroid Neoplasms -- pathology, Neovascularization, Thyroid Neoplasms -- genetics, Up-Regulation -- physiology, Neoplastic, Papillary -- physiopathology, Animal, Pathologic -- physiopathology, Gene Expression Profiling, Carcinoma, Proto-Oncogene Proteins c-ret, Oncogene Proteins, Viral, Biological, Carcinoma, Papillary, Mice, Inbred C57BL, Thyroid Gland -- pathology, Thyroid Gland -- physiology, Disease Models, Animal, Gene Expression Regulation, BRAF MUTATIONS, Disease Models, CELLS, Papillary -- genetics, Viral -- genetics, Pathologic -- pathology, FOLLICULAR VARIANT, Extracellular Space, PCR ANALYSIS
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