Characterization of Mammary Tumors Arising from MMTV-PyVT Transgenic Mice
| Autor: | Chien-Liang Liu, Wen-Chien Huang, Shih-Ping Cheng, Ming-Jen Chen, Chi-Hsin Lin, Shao-Chiang Chang, Yuan-Ching Chang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Current Issues in Molecular Biology, Vol 45, Iss 6, Pp 4518-4528 (2023) |
| Druh dokumentu: | article |
| ISSN: | 1467-3045 1467-3037 |
| DOI: | 10.3390/cimb45060286 |
| Popis: | Among genetically engineered mouse models of breast cancer, MMTV-PyVT is a mouse strain in which the oncogenic polyoma virus middle T antigen is driven by the mouse mammary tumor virus promoter. The aim of the present study was to perform morphologic and genetic analyses of mammary tumors arising from MMTV-PyVT mice. To this end, mammary tumors were obtained at 6, 9, 12, and 16 weeks of age for histology and whole-mount analyses. We conducted whole-exome sequencing to identify constitutional and tumor-specific mutations, and genetic variants were identified using the GRCm38/mm10 mouse reference genome. Using hematoxylin and eosin analysis and whole-mount carmine alum staining, we demonstrated the progressive proliferation and invasion of mammary tumors. Frameshift insertions/deletions (indels) were noted in the Muc4. Mammary tumors showed small indels and nonsynonymous single-nucleotide variants but no somatic structural alterations or copy number variations. In summary, we validated MMTV-PyVT transgenic mice as a multistage model for mammary carcinoma development and progression. Our characterization may be used as a reference for guidance in future research. |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
|