Mammary gland tumors are one of the most common neoplasms in female dogs, and certain breeds are prone to develop the disease. The use of biomarkers in canines is still restricted to research purposes. Therefore, the necessity to analyze gene profiles in different mammary entities in large sample sets is evident in order to evaluate the strength of potential markers serving as future prognostic factors. The aim of the present study was to analyze the gene expression of 16 target genes (, , , , , , , , , , , , , , , and ) known to be involved in human and canine mammary neoplasm development. Expression was analyzed in 111 fresh frozen (FF) and in 170 formalin-fixed, paraffin-embedded (FFPE) specimens of neoplastic and non-neoplastic canine mammary tissues using a multiplexed branched-DNA (b-DNA) assay. , , , and expression revealed consistent results with significant low expression in malignant tumors. The possibility of utilizing them as predictive factors as well as for assisting in the choice of an adequate gene therapy may help in the development of new and improved approaches in canine mammary tumors.
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http://dx.doi.org/10.3390/ijms17091589 | DOI Listing |
Arch Pharm Res
January 2025
Laboratory of Biochemistry and Immunology, College of Veterinary Medicine, Chungbuk National University, Cheongju, 28644, Republic of Korea.
Despite significant progress in the field of human breast cancer research and treatment, there is a consistent increase in the incidence rate of 0.5 percent annually, posing challenges in the development of effective novel therapeutic strategies. The failure rate of drugs in clinical trials stands at approximately 95%, primarily attributed to the limitations and lack of reliability of existing preclinical models, such as mice, which do not mimic human tumor biology.
View Article and Find Full Text PDFCurr Issues Mol Biol
December 2024
Department of Clinical Veterinary Medicine, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China.
Canine mammary carcinomas (CMCs) represent the most prevalent form of cancer in female dogs, characterized by a high incidence and mortality rate. C6 ceramide is recognized for its multifaceted anti-cancer properties, yet its specific influence on CMCs remains to be elucidated. Long noncoding RNAs (lncRNAs), now recognized as functional "dark matter" in precision oncology, are particularly intriguing, with 44% of canine lncRNAs exhibiting tissue-specific expression.
View Article and Find Full Text PDFRes Vet Sci
December 2024
Division of Pathology, GADVASU, Ludhiana, Punjab 141012, India.
Aim: The interlacing interaction between proto-oncoproteins and tumor-suppressing proteins in malignant canine mammary tumors (mCMT) microenvironment remains largely unexplored. The present study intended to decipher the i) association between the intratumoral expression of ERα, HER-2, pan-RAS, p53 and aromatase, ii) their relationship with the clinicohistological parameters and serum sex hormones, and iii) their prognostic relevance in mCMT.
Materials And Methods: Tumor samples from animals with mCMT (n = 27) were subjected to histopathology and immunohistochemistry for ERα, HER-2, pan-RAS, p53, and aromatase.
BMC Cancer
December 2024
Department of Veterinary Biosciences, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland.
Background: Breast cancer (BC) is the most common cancer in women. Likewise, canine mammary tumors (CMT) represent the most common cancer in intact female dogs and develop in the majority spontaneously. Similarities exist in clinical presentation, histopathology, biomarkers, and treatment.
View Article and Find Full Text PDFBiotech Histochem
December 2024
Department of Pathology, Faculty of Veterinary Medicine, Ankara University, Ankara, Turkey.
Myoepithelial cells (MECs) are known to play an active role in mixed mammary tumors and are found in dogs as well as in humans. The study aimed to assess the morphologic features of epithelial and mesenchymal cells and MECs and investigate their roles in epithelial-mesenchymal transformation in different tumor types in canine mammary tumors. Immunohistochemical staining was performed on 165 specimens from benign mixed tumors (BMT), carcinosarcomas, and simple carcinomas (SC).
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