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Novais AA, Tamarindo GH, Chuffa LGDA, Zuccari DAPDC. Decoding Hidden Messengers: Proteomic Profiling of Exosomes in Mammary Cancer Research. Biomedicines 2023; 11:2839. [PMID: 37893211 PMCID: PMC10604896 DOI: 10.3390/biomedicines11102839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 10/11/2023] [Accepted: 10/14/2023] [Indexed: 10/29/2023] Open
Abstract
Cancer is a complex and heterogeneous disease, influenced by various factors that affect its progression and response to treatment. Although a histopathological diagnosis is crucial for identifying and classifying cancer, it may not accurately predict the disease's development and evolution in all cases. To address this limitation, liquid biopsy has emerged as a valuable tool, enabling a more precise and non-invasive analysis of cancer. Liquid biopsy can detect tumor DNA fragments, circulating tumor cells, and exosomes released by cancer cells into the bloodstream. Exosomes attracted significant attention in cancer research because of their specific protein composition, which can provide valuable insights into the disease. The protein profile of exosomes often differs from that of normal cells, reflecting the unique molecular characteristics of cancer. Analyzing these proteins can help identify cancer-associated markers that play important roles in tumor progression, invasion, and metastasis. Ongoing research and clinical validation are essential to advance and effectively utilize protein biomarkers in cancer. Nevertheless, their potential to improve diagnosis and treatment is highly promising. This review discusses several exosome proteins of interest in breast cancer, particularly focusing on studies conducted in mammary tissue and cell lines in humans and experimental animals. Unfortunately, studies conducted in canine species are scarce. This emphasis sheds light on the limited research available in this field. In addition, we present a curated selection of studies that explored exosomal proteins as potential biomarkers, aiming to achieve benefits in breast cancer diagnosis, prognosis, monitoring, and treatment.
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Affiliation(s)
- Adriana Alonso Novais
- Health Sciences Institute (ICS), Universidade Federal de Mato Grosso (UFMT), Sinop 78550-728, Brazil;
| | - Guilherme Henrique Tamarindo
- Brazilian Biosciences National Laboratory, Brazilian Center for Research in Energy and Materials (CNPEM), Campinas 13083-970, Brazil;
- Cancer Molecular Research Laboratory (LIMC), Department of Molecular Biology, Faculdade de Medicina de São José do Rio Preto/FAMERP (FAMERP), São José do Rio Preto 15090-000, Brazil
| | - Luiz Gustavo de Almeida Chuffa
- Department of Structural and Functional Biology, Institute of Biosciences, Universidade Estadual Paulista (UNESP), Botucatu 18618-689, Brazil;
| | - Debora Aparecida Pires de Campos Zuccari
- Cancer Molecular Research Laboratory (LIMC), Department of Molecular Biology, Faculdade de Medicina de São José do Rio Preto/FAMERP (FAMERP), São José do Rio Preto 15090-000, Brazil
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Hardas A, Suárez-Bonnet A, Beck S, Becker WE, Ramírez GA, Priestnall SL. Canine Gastric Carcinomas: A Histopathological and Immunohistochemical Study and Similarities with the Human Counterpart. Animals (Basel) 2021; 11:ani11051409. [PMID: 34069167 PMCID: PMC8156491 DOI: 10.3390/ani11051409] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 04/19/2021] [Accepted: 05/10/2021] [Indexed: 01/06/2023] Open
Abstract
Simple Summary Gastric carcinoma (GC) continues to be one of the leading causes of death in humans and is the most common neoplasm in the stomachs of dogs. In both species, previous studies have demonstrated that the disease is heterogeneous, with genetic and environmental factors playing a quintessential role in disease pathogenesis. Compared to humans, the incidence of gastric carcinoma in dogs is low although, in a small number of breeds, a higher incidence has been reported. In dogs, the etiology and molecular pathways involved remain largely unknown. This retrospective study reviews current signalment data, evaluates the inflammatory component and association with Helicobacter spp. presence in various canine gastric carcinoma histological subtypes, and investigates potential molecular pathways involved in one of the largest study cohorts to date. The benefit of such a comparative study is to highlight the parallel histological features and molecular pathways between dogs and humans. Abstract Canine gastric carcinoma (CGC) affects both sexes in relatively equal proportions, with a mean age of nine years, and the highest frequency in Staffordshire bull terriers. The most common histological subtype in 149 CGC cases was the undifferentiated carcinoma. CGCs were associated with increased chronic inflammation parameters and a greater chronic inflammatory score when Helicobacter spp. were present. Understanding the molecular pathways of gastric carcinoma is challenging. All markers showed variable expression for each subtype. Expression of the cell cycle regulator 14-3-3σ was positive in undifferentiated, tubular and papillary carcinomas. This demonstrates that 14-3-3σ could serve as an immunohistochemical marker in routine diagnosis and that mucinous, papillary and signet-ring cell (SRC) carcinomas follow a 14-3-3σ independent pathway. p16, another cell cycle regulator, showed increased expression in mucinous and SRC carcinomas. Expression of the adhesion molecules E-cadherin and CD44 appear context-dependent, with switching within tumor emboli potentially playing an important role in tumor cell survival, during invasion and metastasis. Within neoplastic emboli, acinar structures lacked expression of all markers, suggesting an independent molecular pathway that requires further investigation. These findings demonstrate similarities and differences between dogs and humans, albeit further clinicopathological data and molecular analysis are required.
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Affiliation(s)
- Alexandros Hardas
- Department of Pathobiology & Population Sciences, The Royal Veterinary College, North Mymms, Hatfield, Hertfordshire AL9 7TA, UK; (A.S.-B.); (W.E.B.); (S.L.P.)
- Correspondence:
| | - Alejandro Suárez-Bonnet
- Department of Pathobiology & Population Sciences, The Royal Veterinary College, North Mymms, Hatfield, Hertfordshire AL9 7TA, UK; (A.S.-B.); (W.E.B.); (S.L.P.)
| | - Sam Beck
- VPG Histology, Horfield, Bristol BS7 0BJ, UK;
| | - William E. Becker
- Department of Pathobiology & Population Sciences, The Royal Veterinary College, North Mymms, Hatfield, Hertfordshire AL9 7TA, UK; (A.S.-B.); (W.E.B.); (S.L.P.)
| | - Gustavo A. Ramírez
- Department of Animal Science, School of Agriculture, Food Science and Veterinary Medicine (ETSEA), University of Lleida, 25198 Lleida, Spain;
| | - Simon L. Priestnall
- Department of Pathobiology & Population Sciences, The Royal Veterinary College, North Mymms, Hatfield, Hertfordshire AL9 7TA, UK; (A.S.-B.); (W.E.B.); (S.L.P.)
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Łopuszyński W, Szczubiał M, Millán Y, Guil-Luna S, Sánchez-Céspedes R, Martin de Las Mulas J, Śmiech A, Bulak K. Immunohistochemical expression of p63 protein and calponin in canine mammary tumours. Res Vet Sci 2019; 123:232-238. [PMID: 30685648 DOI: 10.1016/j.rvsc.2019.01.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 01/11/2019] [Accepted: 01/15/2019] [Indexed: 01/23/2023]
Abstract
The aim of this study was to compare the expression of p63 protein and calponin in terms of their affinity and specificity for myoepithelial cells in canine mammary tumours. The studied material included 10 benign and 32 malignant mammary tumours from female dogs treated with mastectomy. Primary mouse monoclonal antibodies directed against p63 protein clone 4A4 and calponin clone CALP were used in single- and doublestain system of immunohistochemical reaction. The investigations have shown that majority of myoepithelial cells in benign tumours and carcinomas in situ exhibited strong positive labelling for both markers. In other malignant tumours strong immunoreactivity was observed in resting myoepithelial cells (MECs) and hypertrophic myoepithelial cells (HMECs), while the immunoreactivity in spindle-stellate myoepithelial cells (SMECs) and rounded myoepithelial cells (RMECs) was moderate. The granular-diffuse nuclear expression of p63 protein was observed only in myoepithelial cells. In terms of calponin, diffuse cytoplasmic expression was noted not only in myoepithelial cell but also in some stromal fibroblasts and vascular smooth muscle cells. The epithelial cells did not exhibit specific expression of the investigated markers. The obtained results indicate that p63 is a sensitive and more specific marker of myoepithelial cells in canine mammary tumours compared with calponin. These findings suggest that the immunohistochemical analysis peformed with the use of p63 can be a valuable complement of routine histological examinations of canine mammary tumours facilitating identification of tumours with myoepithelial component.
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Affiliation(s)
- Wojciech Łopuszyński
- Sub-Department of Pathomorphology and Forensic Veterinary Medicine, Department and Clinic of Animal Internal Diseases, University of Life Sciences in Lublin, Poland.
| | - Marek Szczubiał
- Department and Clinic of Animal Reproduction, University of Life Sciences in Lublin, Poland
| | - Yolanda Millán
- Department of Anatomy and Comparative Pathology, Córdoba University, Spain
| | - Silvia Guil-Luna
- Department of Anatomy and Comparative Pathology, Córdoba University, Spain
| | | | | | - Anna Śmiech
- Sub-Department of Pathomorphology and Forensic Veterinary Medicine, Department and Clinic of Animal Internal Diseases, University of Life Sciences in Lublin, Poland
| | - Kamila Bulak
- Sub-Department of Pathomorphology and Forensic Veterinary Medicine, Department and Clinic of Animal Internal Diseases, University of Life Sciences in Lublin, Poland
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Suárez-Bonnet A, Willis C, Pittaway R, Smith K, Mair T, Priestnall SL. Molecular carcinogenesis in equine penile cancer: A potential animal model for human penile cancer. Urol Oncol 2018; 36:532.e9-532.e18. [PMID: 30270026 DOI: 10.1016/j.urolonc.2018.09.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Revised: 08/19/2018] [Accepted: 09/03/2018] [Indexed: 12/19/2022]
Abstract
OBJECTIVES To evaluate the expression of COX-2, E-cadherin, vimentin, 14-3-3σ, and Phosphatase and tensin homolog (PTEN) tumor-related proteins in equine penile papillomas (ePP) and squamous cell carcinomas (ePSCC), the occurrence of epithelial-mesenchymal transition (EMT) at the invasion front (IF) and compare our findings with current knowledge on human penile squamous cell carcinoma (hPSCC). MATERIAL AND METHODS We analyzed, by immunohistochemistry in 45 equine penile proliferative epithelial lesions, the expression of COX-2, E-cadherin, vimentin, 14-3-3σ, and PTEN using monoclonal antibodies. Tumors were histopathologically classified as well-differentiated or poorly differentiated using the IF grading scheme. Semiquantitative analysis was performed to determine down or up-regulation of the proteins and association with histopathological characteristics were statistically investigated using Mann-Whitney U test and/or Spearman's tests. RESULTS COX-2 was neo-expressed in 86.6% of the cases and expression progressively increased from ePP to ePSCC (P = 0.0003) and from well to poorly differentiated (P = 0.033). High COX-2 expression was associated with a high mitotic index (MI) (P = 0.026). In contrast to normal epidermis, ePSCC had very low E-cadherin expression in 64% of the cases (P = 0.0005). Vimentin was neo-expressed in 65% of poorly differentiated ePSCC at the IF indicating EMT. Cytoplasmic 14-3-3σ protein expression was reduced in 42% of the ePSCC and additionally, nuclear expression of 14-3-3σ in neoplastic keratinocytes and in the cytoplasm of stromal fibroblasts at the IF was features only found in ePSCC. PTEN protein showed a tendency to be decreased or lost in ePSCC. CONCLUSIONS Our study provides evidence of molecular abnormalities in ePSCC similar to those reported for human PSCC. The occurrence of EMT at the IF is a common event in ePSCC. Naturally occurring ePSCC could serve as a valuable preclinical animal model to explore upcoming therapeutic options for hPSCC.
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Affiliation(s)
- Alejandro Suárez-Bonnet
- Department of Pathobiology and Population Sciences, The Royal Veterinary College, Hawkshead Lane, Hatfield, Hertfordshire AL9 7TA, UK.
| | - Claire Willis
- Department of Pathobiology and Population Sciences, The Royal Veterinary College, Hawkshead Lane, Hatfield, Hertfordshire AL9 7TA, UK
| | - Rachel Pittaway
- Department of Pathobiology and Population Sciences, The Royal Veterinary College, Hawkshead Lane, Hatfield, Hertfordshire AL9 7TA, UK
| | - Ken Smith
- Department of Pathobiology and Population Sciences, The Royal Veterinary College, Hawkshead Lane, Hatfield, Hertfordshire AL9 7TA, UK
| | - Tim Mair
- Bell Equine Veterinary Clinic, Mereworth, Maidstone, Kent ME18 5GS, UK
| | - Simon L Priestnall
- Department of Pathobiology and Population Sciences, The Royal Veterinary College, Hawkshead Lane, Hatfield, Hertfordshire AL9 7TA, UK
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Suárez-Bonnet A, Lara-García A, Stoll AL, Carvalho S, Priestnall SL. 14-3-3σ Protein Expression in Canine Renal Cell Carcinomas. Vet Pathol 2017; 55:233-240. [PMID: 29145797 DOI: 10.1177/0300985817738097] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
14-3-3σ is a protein expressed in many epithelial tissues associated with essential cell functions, including cell-cycle control, apoptosis, and cytoskeletal integrity. There is a paucity of knowledge of the tumorigenesis of canine renal cell carcinomas (RCCs), and the histological origin of this tumor has not been established. This study analyzed the expression of 14-3-3σ, Ki-67, cytokeratins, and vimentin in 40 canine RCCs. Aberrant expression of 14-3-3σ was demonstrated in 15 (38%) cases and was associated with a significantly shorter survival time ( P < .002). In contrast to canine RCC, normal kidney did not express 14-3-3σ. The Ki-67 proliferation index did not show utility as a prognostic factor. The distal convoluted tubular epithelium in normal kidneys coexpressed cytokeratins and vimentin, and thus maintenance of this coexpression pattern in canine RCC suggests that most tumors arise from the distal segment of the nephron. These results suggest that 14-3-3σ is a potential negative prognostic factor and a possible therapeutic target.
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Affiliation(s)
- Alejandro Suárez-Bonnet
- 1 Department of Pathobiology and Population Sciences, The Royal Veterinary College, Hatfield, Hertfordshire, UK
| | - Ana Lara-García
- 2 Department of Oncology Service, The Royal Veterinary College, Hatfield, Hertfordshire, UK
| | - Alexander L Stoll
- 1 Department of Pathobiology and Population Sciences, The Royal Veterinary College, Hatfield, Hertfordshire, UK
| | - Sofia Carvalho
- 2 Department of Oncology Service, The Royal Veterinary College, Hatfield, Hertfordshire, UK
| | - Simon L Priestnall
- 1 Department of Pathobiology and Population Sciences, The Royal Veterinary College, Hatfield, Hertfordshire, UK
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Benign Bilateral Adenomyoepithelioma of the Mammary Gland in a Ring-tailed Lemur ( Lemur catta ). J Comp Pathol 2017; 157:85-89. [DOI: 10.1016/j.jcpa.2017.06.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Revised: 06/01/2017] [Accepted: 06/05/2017] [Indexed: 11/20/2022]
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Sánchez-Céspedes R, Millán Y, Guil-Luna S, Reymundo C, Espinosa de Los Monteros A, Martín de Las Mulas J. Myoepithelial cells in canine mammary tumours. Vet J 2015; 207:45-52. [PMID: 26639832 DOI: 10.1016/j.tvjl.2015.10.035] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Revised: 10/07/2015] [Accepted: 10/10/2015] [Indexed: 02/05/2023]
Abstract
Mammary tumours are the most common neoplasms of female dogs. Compared to mammary tumours of humans and cats, myoepithelial (ME) cell involvement is common in canine mammary tumours (CMT) of any subtype. Since ME cell involvement in CMT influences both histogenetic tumour classification and prognosis, correct identification of ME cells is important. This review describes immunohistochemical methods for identification of canine mammary ME cells used in vivo. In addition, phenotypic and genotypic methods to isolate ME cells for in vitro studies to analyse tumour-suppressor protein production and gene expression are discussed. The contribution of ME cells to both histogenetic classifications and the prognosis of CMT is compared with other species and the potential use of ME cells as a method to identify carcinoma in situ is discussed.
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Affiliation(s)
| | - Yolanda Millán
- Department of Comparative Pathology, University of Córdoba, 14014 Córdoba, Spain
| | - Silvia Guil-Luna
- Department of Comparative Pathology, University of Córdoba, 14014 Córdoba, Spain
| | - Carlos Reymundo
- Department of Pathology, University of Córdoba, 14071 Córdoba, Spain
| | - Antonio Espinosa de Los Monteros
- Unit of Histology and Animal Pathology, Institute for Animal Health, Veterinary School, University of Las Palmas de Gran Canaria, 35413 Las Palmas, Spain
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Suárez-Bonnet A, Herráez P, Aguirre M, Suárez-Bonnet E, Andrada M, Rodríguez F, Espinosa de Los Monteros A. Expression of cell cycle regulators, 14-3-3σ and p53 proteins, and vimentin in canine transitional cell carcinoma of the urinary bladder. Urol Oncol 2015; 33:332.e1-7. [PMID: 25979650 DOI: 10.1016/j.urolonc.2015.04.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Revised: 04/07/2015] [Accepted: 04/08/2015] [Indexed: 02/07/2023]
Abstract
OBJECTIVES The study of the expression of 14-3-3σ, p53, and vimentin proteins in canine transitional cell carcinoma (TCC) evaluating differences with normal bladder tissues, and the association with clinicopathological variables. METHODS We analyze by immunohistochemistry in 19 canine TCCs the expression of 14-3-3σ, p53, and vimentin using monoclonal antibodys. A semiquantitative scoring method was employed and statistical analysis was performed to display relationships between variables. RESULTS In contrast to normal urinary bladder epithelium, which showed high levels of 14-3-3σ, its expression was decreased in 53% of the studied tumors (P = 0.0344). The 14-3-3σ protein was expressed by neoplastic emboli and by highly infiltrative neoplastic cells. The p53 protein was expressed in 26% of TCCs, but no significant association between 14-3-3σ and p53 was detected. Neoplastic epithelial cells displayed vimentin immunoreactivity in 21% of TCCs, and a positive correlation with mitotic index was observed (P = 0.042). Coexpression of vimentin and 14-3-3σ by highly infiltrative neoplastic cells was also observed. CONCLUSIONS 14-3-3σ is deregulated in canine TCCs and its expression by highly infiltrative tumor cells may be related to the acquisition of aggressive behavior. Furthermore, this article reinforce the role of canine TCC as relevant model of human urothelial carcinoma and we suggest 14-3-3σ as a potential therapeutic target. Further studies are necessary to clarify the role of 14-3-3σ in canine TCC.
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Affiliation(s)
- Alejandro Suárez-Bonnet
- Unit of Histology and Animal Pathology, Institute for Animal Health, Veterinary School, University of Las Palmas de Gran Canaria, Arucas, Spain.
| | - Pedro Herráez
- Unit of Histology and Animal Pathology, Institute for Animal Health, Veterinary School, University of Las Palmas de Gran Canaria, Arucas, Spain
| | - Maria Aguirre
- Department of Surgery and Internal Medicine, Veterinary School, University of Las Palmas de Gran Canaria, Arucas, Spain
| | - Elena Suárez-Bonnet
- Unit of Histology and Animal Pathology, Institute for Animal Health, Veterinary School, University of Las Palmas de Gran Canaria, Arucas, Spain
| | - Marisa Andrada
- Unit of Histology and Animal Pathology, Institute for Animal Health, Veterinary School, University of Las Palmas de Gran Canaria, Arucas, Spain
| | - Francisco Rodríguez
- Unit of Histology and Animal Pathology, Institute for Animal Health, Veterinary School, University of Las Palmas de Gran Canaria, Arucas, Spain
| | - Antonio Espinosa de Los Monteros
- Unit of Histology and Animal Pathology, Institute for Animal Health, Veterinary School, University of Las Palmas de Gran Canaria, Arucas, Spain
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Suárez-Bonnet A, Aguirre-Sanceledonio M, Andrada M, Herráez P, Quesada-Canales Ó, Espinosa de los Monteros A. Comparison of immunoreaction between two commercial antibodies against 14-3-3σprotein in canine tissues. JOURNAL OF APPLIED ANIMAL RESEARCH 2015. [DOI: 10.1080/09712119.2015.1013963] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Peña L, Gama A, Goldschmidt MH, Abadie J, Benazzi C, Castagnaro M, Díez L, Gärtner F, Hellmén E, Kiupel M, Millán Y, Miller MA, Nguyen F, Poli A, Sarli G, Zappulli V, de las Mulas JM. Canine mammary tumors: a review and consensus of standard guidelines on epithelial and myoepithelial phenotype markers, HER2, and hormone receptor assessment using immunohistochemistry. Vet Pathol 2013; 51:127-45. [PMID: 24227007 DOI: 10.1177/0300985813509388] [Citation(s) in RCA: 113] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Although there have been several studies on the use of immunohistochemical biomarkers of canine mammary tumors (CMTs), the results are difficult to compare. This article provides guidelines on the most useful immunohistochemical markers to standardize their use and understand how outcomes are measured, thus ensuring reproducibility of results. We have reviewed the biomarkers of canine mammary epithelial and myoepithelial cells and identified those biomarkers that are most useful and those biomarkers for invasion and lymph node micrometastatic disease. A 10% threshold for positive reaction for most of these markers is recommended. Guidelines on immunolabeling for HER2, estrogen receptors (ERs), and progesterone receptors (PRs) are provided along with the specific recommendations for interpretation of the results for each of these biomarkers in CMTs. Only 3+ HER2-positive tumors should be considered positive, as found in human breast cancer. The lack of any known response to adjuvant endocrine therapy of ER- and PR-positive CMTs prevents the use of the biological positive/negative threshold used in human breast cancer. Immunohistochemistry results of ER and PR in CMTs should be reported as the sum of the percentage of positive cells and the intensity of immunolabeling (Allred score). Incorporation of these recommendations in future studies, either prospective or retrospective, will provide a mechanism for the direct comparison of studies and will help to determine whether these biomarkers have prognostic significance. Finally, these biomarkers may ascertain the most appropriate treatment(s) for canine malignant mammary neoplasms.
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Affiliation(s)
- L Peña
- Department of Animal Medicine, Surgery and Pathology, Veterinary School, Carretera de la Coruña s/n, Ciudad Universitaria, 28040 Madrid, Spain.
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Sánchez-Céspedes R, Suárez-Bonnet A, Millán Y, Guil-Luna S, Reymundo C, Herráez P, Espinosa de Los Monteros A, Martin de Las Mulas J. Use of CD10 as a marker of canine mammary myoepithelial cells. Vet J 2013; 195:192-9. [PMID: 22819182 DOI: 10.1016/j.tvjl.2012.06.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2011] [Revised: 05/29/2012] [Accepted: 06/01/2012] [Indexed: 11/19/2022]
Abstract
CD10 is an important cell marker in the diagnosis of acute lymphoblastic leukaemia and of breast myoepithelial (ME) cells in humans. The objective of this study was to assess the value of CD10 as a marker of canine ME cells using immunohistochemistry on routinely processed normal, dysplastic and neoplastic mammary tissue. Five different CD10 positive cell types were identified on the basis of cell morphology, pattern of immunoreactivity, and on the co-expression of additional cell lineage-specific markers. Type 1 cells were typical fusiform cells with a ME cell phenotype (calponin- and cytokeratin [CK] 14-positive, CK8/18-negative). Type 2 cells were typical or atypical polyhedral cells with a luminal epithelial (LE) cell phenotype (calponin- and CK14-negative, CK8/18-positive). Type 3 cells had a type 1 phenotype with variable morphology, and type 4 were atypical neoplastic cells with a mixed ME/LE phenotype. Type 5 cells were typical fusiform cells with a stromal phenotype. Type 1 cells were considered normal ME cells and were found in all sample types; type 2 cells were considered normal or neoplastic LE cells and were also found in all sample types; types 3 and 4 cells were restricted to tumour samples and to malignant tumours, respectively, and type 5 cells were found in all sample types, although predominantly in neoplastic tissue. The findings indicate that the CD10 antigen is a sensitive (although not specific) marker of canine ME cells in normal, dysplastic and neoplastic mammary tissue. Differences in the distribution and staining intensity of CD10-positive cells suggest a number of potential roles for this protein in the pathogenesis of canine mammary neoplasia.
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Affiliation(s)
- R Sánchez-Céspedes
- Department of Comparative Pathology, Veterinary Faculty, University of Córdoba, Córdoba, Spain.
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A novel myoepithelial cell marker in canine mammary tissue. Vet J 2011; 190:303-4. [DOI: 10.1016/j.tvjl.2011.04.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2011] [Accepted: 04/21/2011] [Indexed: 11/20/2022]
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