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Shen X, Yin L, Xu S, Wang J, Yin D, Zhao R, Pan X, Dai Y, Hou H, Zhou X, Hu X. Altered Proteomic Profile of Exosomes Secreted from Vero Cells Infected with Porcine Epidemic Diarrhea Virus. Viruses 2023; 15:1640. [PMID: 37631983 PMCID: PMC10459195 DOI: 10.3390/v15081640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 07/23/2023] [Accepted: 07/23/2023] [Indexed: 08/27/2023] Open
Abstract
Porcine epidemic diarrhea virus (PEDV) infection causes severe diarrhea in pigs and can be fatal in newborn piglets. Exosomes are extracellular vesicles secreted by cells that transfer biologically active proteins, lipids, and RNA to neighboring or distant cells. Herein, the morphology, particle size, and secretion of exosomes derived from a control and PEDV-infected group are examined, followed by a proteomic analysis of the exosomes. The results show that the exosomes secreted from the Vero cells had a typical cup-shaped structure. The average particle size of the exosomes from the PEDV-infected group was 112.4 nm, whereas that from the control group was 150.8 nm. The exosome density analysis and characteristic protein determination revealed that the content of exosomes in the PEDV-infected group was significantly higher than that in the control group. The quantitative proteomics assays revealed 544 differentially expressed proteins (DEPs) in the PEDV-infected group's exosomes compared with those in the controls, with 236 upregulated and 308 downregulated proteins. The DEPs were closely associated with cellular regulatory pathways, such as the phosphatidylinositol-4,5-bisphosphate 3-kinase (PI3K)-protein kinase B (Akt) signaling pathway, extracellular matrix-receptor interaction, focal adhesion, and cytoskeletal regulation. These findings provide the basis for further investigation of the pathogenic mechanisms of PEDV and the discovery of novel antiviral targets.
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Affiliation(s)
- Xuehuai Shen
- Livestock and Poultry Epidemic Diseases Research Center of Anhui Province, Institute of Animal Husbandry and Veterinary Science, Anhui Academy of Agricultural Science, Hefei 230031, China; (X.S.); (L.Y.); (S.X.); (J.W.); (D.Y.); (R.Z.); (Y.D.); (H.H.); (X.Z.); (X.H.)
- Anhui Province Key Laboratory of Livestock and Poultry Product Safety Engineering, Hefei 230031, China
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Lei Yin
- Livestock and Poultry Epidemic Diseases Research Center of Anhui Province, Institute of Animal Husbandry and Veterinary Science, Anhui Academy of Agricultural Science, Hefei 230031, China; (X.S.); (L.Y.); (S.X.); (J.W.); (D.Y.); (R.Z.); (Y.D.); (H.H.); (X.Z.); (X.H.)
- Anhui Province Key Laboratory of Livestock and Poultry Product Safety Engineering, Hefei 230031, China
| | - Shuangshuang Xu
- Livestock and Poultry Epidemic Diseases Research Center of Anhui Province, Institute of Animal Husbandry and Veterinary Science, Anhui Academy of Agricultural Science, Hefei 230031, China; (X.S.); (L.Y.); (S.X.); (J.W.); (D.Y.); (R.Z.); (Y.D.); (H.H.); (X.Z.); (X.H.)
- Anhui Province Key Laboratory of Livestock and Poultry Product Safety Engineering, Hefei 230031, China
| | - Jieru Wang
- Livestock and Poultry Epidemic Diseases Research Center of Anhui Province, Institute of Animal Husbandry and Veterinary Science, Anhui Academy of Agricultural Science, Hefei 230031, China; (X.S.); (L.Y.); (S.X.); (J.W.); (D.Y.); (R.Z.); (Y.D.); (H.H.); (X.Z.); (X.H.)
- Anhui Province Key Laboratory of Livestock and Poultry Product Safety Engineering, Hefei 230031, China
| | - Dongdong Yin
- Livestock and Poultry Epidemic Diseases Research Center of Anhui Province, Institute of Animal Husbandry and Veterinary Science, Anhui Academy of Agricultural Science, Hefei 230031, China; (X.S.); (L.Y.); (S.X.); (J.W.); (D.Y.); (R.Z.); (Y.D.); (H.H.); (X.Z.); (X.H.)
- Anhui Province Key Laboratory of Livestock and Poultry Product Safety Engineering, Hefei 230031, China
| | - Ruihong Zhao
- Livestock and Poultry Epidemic Diseases Research Center of Anhui Province, Institute of Animal Husbandry and Veterinary Science, Anhui Academy of Agricultural Science, Hefei 230031, China; (X.S.); (L.Y.); (S.X.); (J.W.); (D.Y.); (R.Z.); (Y.D.); (H.H.); (X.Z.); (X.H.)
- Anhui Province Key Laboratory of Livestock and Poultry Product Safety Engineering, Hefei 230031, China
| | - Xiaocheng Pan
- Livestock and Poultry Epidemic Diseases Research Center of Anhui Province, Institute of Animal Husbandry and Veterinary Science, Anhui Academy of Agricultural Science, Hefei 230031, China; (X.S.); (L.Y.); (S.X.); (J.W.); (D.Y.); (R.Z.); (Y.D.); (H.H.); (X.Z.); (X.H.)
- Anhui Province Key Laboratory of Livestock and Poultry Product Safety Engineering, Hefei 230031, China
| | - Yin Dai
- Livestock and Poultry Epidemic Diseases Research Center of Anhui Province, Institute of Animal Husbandry and Veterinary Science, Anhui Academy of Agricultural Science, Hefei 230031, China; (X.S.); (L.Y.); (S.X.); (J.W.); (D.Y.); (R.Z.); (Y.D.); (H.H.); (X.Z.); (X.H.)
- Anhui Province Key Laboratory of Livestock and Poultry Product Safety Engineering, Hefei 230031, China
| | - Hongyan Hou
- Livestock and Poultry Epidemic Diseases Research Center of Anhui Province, Institute of Animal Husbandry and Veterinary Science, Anhui Academy of Agricultural Science, Hefei 230031, China; (X.S.); (L.Y.); (S.X.); (J.W.); (D.Y.); (R.Z.); (Y.D.); (H.H.); (X.Z.); (X.H.)
- Anhui Province Key Laboratory of Livestock and Poultry Product Safety Engineering, Hefei 230031, China
| | - Xueli Zhou
- Livestock and Poultry Epidemic Diseases Research Center of Anhui Province, Institute of Animal Husbandry and Veterinary Science, Anhui Academy of Agricultural Science, Hefei 230031, China; (X.S.); (L.Y.); (S.X.); (J.W.); (D.Y.); (R.Z.); (Y.D.); (H.H.); (X.Z.); (X.H.)
- Anhui Province Key Laboratory of Livestock and Poultry Product Safety Engineering, Hefei 230031, China
| | - Xiaomiao Hu
- Livestock and Poultry Epidemic Diseases Research Center of Anhui Province, Institute of Animal Husbandry and Veterinary Science, Anhui Academy of Agricultural Science, Hefei 230031, China; (X.S.); (L.Y.); (S.X.); (J.W.); (D.Y.); (R.Z.); (Y.D.); (H.H.); (X.Z.); (X.H.)
- Anhui Province Key Laboratory of Livestock and Poultry Product Safety Engineering, Hefei 230031, China
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Munday JS, Knight CG, Luff JA. Papillomaviral skin diseases of humans, dogs, cats and horses: A comparative review. Part 2: Pre-neoplastic and neoplastic diseases. Vet J 2022; 288:105898. [PMID: 36152994 DOI: 10.1016/j.tvjl.2022.105898] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 09/12/2022] [Accepted: 09/19/2022] [Indexed: 11/20/2022]
Abstract
Papillomaviruses (PVs) are well recognized to cause pre-neoplastic and neoplastic diseases in humans. Similarly, there is increasing evidence that PVs play a significant role in the development of pre-neoplastic and neoplastic diseases of the haired skin of dogs and cats, and the mucosa of horses. As the mechanisms by which PVs cause neoplasia are well studied in humans, it is valuable to compare the PV-induced neoplasms of humans with similar PV-associated neoplasms in the companion animal species. In the second part of this comparative review, the pre-neoplastic and neoplastic diseases thought to be caused by PVs in humans, dogs, cats, and horses are described. This includes PV-induced cutaneous plaques, cutaneous squamous cell carcinomas (SCCs) and mucosal SCCs within the four species. The review concludes with a discussion about the potential use of vaccines to prevent PV-induced diseases of dogs, cats, and horses.
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Affiliation(s)
- John S Munday
- Pathobiology, School of Veterinary Science, Massey University, Palmerston North, New Zealand.
| | - Cameron G Knight
- Department of Veterinary Clinical and Diagnostic Sciences, Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Jennifer A Luff
- Department of Population Health and Pathobiology, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, USA
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Ramsauer AS, Wachoski-Dark GL, Fraefel C, Ackermann M, Brandt S, Grest P, Knight CG, Favrot C, Tobler K. Establishment of a Three-Dimensional In Vitro Model of Equine Papillomavirus Type 2 Infection. Viruses 2021; 13:v13071404. [PMID: 34372610 PMCID: PMC8310375 DOI: 10.3390/v13071404] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 07/06/2021] [Accepted: 07/14/2021] [Indexed: 12/16/2022] Open
Abstract
There is growing evidence that equine papillomavirus type 2 (EcPV2) infection is etiologically associated with the development of genital squamous cell carcinoma (SCC) and precursor lesions in equids. However, the precise mechanisms underlying neoplastic progression remain unknown. To allow the study of EcPV2-induced carcinogenesis, we aimed to establish a primary equine cell culture model of EcPV2 infection. Three-dimensional (3D) raft cultures were generated from equine penile perilesional skin, plaques and SCCs. Using histological, molecular biological and immunohistochemical methods, rafts versus corresponding natural tissue sections were compared with regard to morphology, presence of EcPV2 DNA, presence and location of EcPV2 gene transcripts and expression of epithelial, mesenchymal and tumor/proliferation markers. Raft cultures from perilesional skin harboring only a few EcPV2-positive (EcPV2+) cells accurately recapitulated the differentiation process of normal skin, whilst rafts from EcPV2+ penile plaques were structurally organized but showed early hyperplasia. Rafts from EcPV2+ SCCs exhibited pronounced hyperplasia and marked dysplasia. Raft levels of EcPV2 oncogene transcription (E6/E7) and expression of tumor/proliferation markers p53, Ki67 and MCM7 expression positively correlated with neoplastic progression, again reflecting the natural situation. Three-dimensional raft cultures accurately reflected major features of corresponding ex vivo material, thus constituting a valuable new research model to study EcPV2-induced carcinogenesis.
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Affiliation(s)
- Anna Sophie Ramsauer
- Institute of Virology, Vetsuisse Faculty, University of Zurich, 8057 Zurich, Switzerland; (C.F.); (M.A.); (K.T.)
- Dermatology Unit, Vetsuisse Faculty, University of Zurich, 8057 Zurich, Switzerland;
- Internal Medicine, University Equine Clinic, University of Veterinary Medicine, 1210 Vienna, Austria
- Correspondence: ; Tel.: +43-6646-0257-5564
| | - Garrett Louis Wachoski-Dark
- Department of Veterinary Clinical and Diagnostic Sciences, Faculty of Veterinary Medicine, University of Calgary, Calgary, AB T2N 1N4, Canada; (G.L.W.-D.); (C.G.K.)
| | - Cornel Fraefel
- Institute of Virology, Vetsuisse Faculty, University of Zurich, 8057 Zurich, Switzerland; (C.F.); (M.A.); (K.T.)
| | - Mathias Ackermann
- Institute of Virology, Vetsuisse Faculty, University of Zurich, 8057 Zurich, Switzerland; (C.F.); (M.A.); (K.T.)
| | - Sabine Brandt
- Research Group Oncology, University Equine Clinic, University of Veterinary Medicine, 1210 Vienna, Austria;
| | - Paula Grest
- Institute of Veterinary Pathology, Vetsuisse Faculty, University of Zurich, 8057 Zurich, Switzerland;
| | - Cameron Greig Knight
- Department of Veterinary Clinical and Diagnostic Sciences, Faculty of Veterinary Medicine, University of Calgary, Calgary, AB T2N 1N4, Canada; (G.L.W.-D.); (C.G.K.)
| | - Claude Favrot
- Dermatology Unit, Vetsuisse Faculty, University of Zurich, 8057 Zurich, Switzerland;
| | - Kurt Tobler
- Institute of Virology, Vetsuisse Faculty, University of Zurich, 8057 Zurich, Switzerland; (C.F.); (M.A.); (K.T.)
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Medeiros-Fonseca B, Cubilla A, Brito H, Martins T, Medeiros R, Oliveira P, Gil da Costa RM. Experimental Models for Studying HPV-Positive and HPV-Negative Penile Cancer: New Tools for An Old Disease. Cancers (Basel) 2021; 13:cancers13030460. [PMID: 33530343 PMCID: PMC7865362 DOI: 10.3390/cancers13030460] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Revised: 01/11/2021] [Accepted: 01/23/2021] [Indexed: 12/28/2022] Open
Abstract
Simple Summary Penile cancer is an uncommon and understudied malignancy that is most commonly diagnosed in developing countries. Therapeutic advances have been slow, in part due to the lack of in vitro and in vivo models for testing new drugs before performing clinical trials. Recently, this difficulty has been partly overcome and multiple new pre-clinical models were reported. These important developments will help develop new therapies for penile cancer patients. The present review summarizes and discusses the available data concerning the pre-clinical models of penile cancer and their uses. Comparisons are drawn between different models, allowing researchers to choose the most adequate setting for their experiments. The remaining gaps in this array of penile cancer models are also discussed, in particular the lack of models for studying metastatic disease and cell lines representing tumors associated with human papillomavirus. Abstract Penile cancer is an uncommon malignancy that occurs most frequently in developing countries. Two pathways for penile carcinogenesis are currently recognized: one driven by human papillomavirus (HPV) infection and another HPV-independent route, associated with chronic inflammation. Progress on the clinical management of this disease has been slow, partly due to the lack of preclinical models for translational research. However, exciting recent developments are changing this landscape, with new in vitro and in vivo models becoming available. These include mouse models for HPV+ and HPV− penile cancer and multiple cell lines representing HPV− lesions. The present review addresses these new advances, summarizing available models, comparing their characteristics and potential uses and discussing areas that require further improvement. Recent breakthroughs achieved using these models are also discussed, particularly those developments pertaining to HPV-driven cancer. Two key aspects that still require improvement are the establishment of cell lines that can represent HPV+ penile carcinomas and the development of mouse models to study metastatic disease. Overall, the growing array of in vitro and in vivo models for penile cancer provides new and useful tools for researchers in the field and is expected to accelerate pre-clinical research on this disease.
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Affiliation(s)
- Beatriz Medeiros-Fonseca
- Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Trás-os-Montes and Alto Douro, UTAD, 5001-801 Vila Real, Portugal; (B.M.-F.); (T.M.); (P.O.)
| | - Antonio Cubilla
- Instituto de Patología e Investigación and Universidad Nacional de Asunción, Asunción, Paraguay;
| | - Haissa Brito
- Maranhão Tumour and DNA Biobank (BTMA), Post-graduate Programme in Adult Health (PPGSAD), Federal University of Maranhão (UFMA), São Luís 65080-805, Brazil;
| | - Tânia Martins
- Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Trás-os-Montes and Alto Douro, UTAD, 5001-801 Vila Real, Portugal; (B.M.-F.); (T.M.); (P.O.)
- Veterinary Sciences Department, University of Trás-os-Montes and Alto Douro, UTAD, 5000-801 Vila Real, Portugal
| | - Rui Medeiros
- Molecular Oncology and Viral Pathology Group, CI-IPOP, IPO-Porto, 4200-072 Porto, Portugal;
- Faculty of Medicine, University of Porto, 4200-319 Porto, Portugal
- Virology Service, IPO-Porto, 4200-072 Porto, Portugal
- Biomedicine Research Center (CEBIMED), Faculty of Health Sciences, Fernando Pessoa University, 4249-004 Porto, Portugal
| | - Paula Oliveira
- Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Trás-os-Montes and Alto Douro, UTAD, 5001-801 Vila Real, Portugal; (B.M.-F.); (T.M.); (P.O.)
- Veterinary Sciences Department, University of Trás-os-Montes and Alto Douro, UTAD, 5000-801 Vila Real, Portugal
| | - Rui M. Gil da Costa
- Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Trás-os-Montes and Alto Douro, UTAD, 5001-801 Vila Real, Portugal; (B.M.-F.); (T.M.); (P.O.)
- Maranhão Tumour and DNA Biobank (BTMA), Post-graduate Programme in Adult Health (PPGSAD), Federal University of Maranhão (UFMA), São Luís 65080-805, Brazil;
- Molecular Oncology and Viral Pathology Group, CI-IPOP, IPO-Porto, 4200-072 Porto, Portugal;
- Laboratory for Process Engineering, Environment, Biotechnology and Energy (LEPABE), Faculty of Engineering, University of Porto, 4200-465 Porto, Portugal
- Correspondence: ; Tel.: +55-9132728000
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Porcellato I, Modesto P, Cappelli K, Varello K, Peletto S, Brachelente C, Martini I, Mechelli L, Ferrari A, Ghelardi A, Razzuoli E. Equus caballus papillomavirus type 2 (EcPV2) in co-occurring vulvar and gastric lesions of a pony. Res Vet Sci 2020; 132:167-171. [PMID: 32590224 DOI: 10.1016/j.rvsc.2020.06.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 05/19/2020] [Accepted: 06/01/2020] [Indexed: 12/13/2022]
Abstract
In horses, squamous cell carcinomas (SCCs) are the most common malignant tumors developing on non-pigmented skin, muco-cutaneous areas, like external genitalia, and, less frequently, in the stomach. Growing evidence suggests Equus caballus papillomavirus type 2 (EcPV2) as causative agent of genital SCCs. Our case report describes a 20-year-old, female, mixed-breed pony with co-occurring vulvar papilloma and in situ carcinoma and gastric SCC. Both lesions were positive for the same EcPV2, as confirmed by DNA sequencing. E6 mRNA expression was observed both in vulvar lesions and gastric SCC, while L1 mRNA was expressed in the vulvar tumor. To the best of the Authors' knowledge, this is the first report of an association between EcPV2 and equine gastric squamous cell carcinoma, with co-occurring EcPV2-positive genital lesions. Further studies are required to assess the real prevalence and the possible role of this viral type in these equine tumors.
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Affiliation(s)
- Ilaria Porcellato
- Dipartimento di Medicina Veterinaria, Via San Costanzo 4, Università degli Studi di Perugia, 06126 Perugia, Italy.
| | - Paola Modesto
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle D'Aosta, National Reference Center of Veterinary and Comparative Oncology (CEROVEC), Piazza Borgo Pila, 16129 Genova, Italy
| | - Katia Cappelli
- Dipartimento di Medicina Veterinaria, Via San Costanzo 4, Università degli Studi di Perugia, 06126 Perugia, Italy
| | - Katia Varello
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle D'Aosta, National Reference Center of Veterinary and Comparative Oncology (CEROVEC), Piazza Borgo Pila, 16129 Genova, Italy
| | - Simone Peletto
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle D'Aosta, National Reference Center of Veterinary and Comparative Oncology (CEROVEC), Piazza Borgo Pila, 16129 Genova, Italy
| | - Chiara Brachelente
- Dipartimento di Medicina Veterinaria, Via San Costanzo 4, Università degli Studi di Perugia, 06126 Perugia, Italy
| | - Isabella Martini
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle D'Aosta, National Reference Center of Veterinary and Comparative Oncology (CEROVEC), Piazza Borgo Pila, 16129 Genova, Italy
| | - Luca Mechelli
- Dipartimento di Medicina Veterinaria, Via San Costanzo 4, Università degli Studi di Perugia, 06126 Perugia, Italy
| | - Angelo Ferrari
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle D'Aosta, National Reference Center of Veterinary and Comparative Oncology (CEROVEC), Piazza Borgo Pila, 16129 Genova, Italy
| | - Alessandro Ghelardi
- Azienda Usl Toscana Nord-Ovest, UOC Ostetricia e Ginecologia, Ospedale Apuane, Massa, Italy
| | - Elisabetta Razzuoli
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle D'Aosta, National Reference Center of Veterinary and Comparative Oncology (CEROVEC), Piazza Borgo Pila, 16129 Genova, Italy
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Ramsauer AS, Wachoski-Dark GL, Fraefel C, Tobler K, Brandt S, Knight CG, Favrot C, Grest P. Paving the way for more precise diagnosis of EcPV2-associated equine penile lesions. BMC Vet Res 2019; 15:356. [PMID: 31640696 PMCID: PMC6805557 DOI: 10.1186/s12917-019-2097-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Accepted: 09/16/2019] [Indexed: 01/15/2023] Open
Abstract
Background There is growing evidence that equine papillomavirus type 2 (EcPV2) infection is causally associated with the development of equine genital squamous cell carcinomas (SCCs). Early stages of disease present clinically as plaques or wart-like lesions which can gradually progress to tumoural lesions. Histologically these lesions are inconsistently described as benign hyperplasia, papilloma, penile intraepithelial neoplasia (PIN), carcinoma in situ (CIS) or SCC. Guidelines for histological classification of early SCC precursor lesions are not precisely defined, leading to potential misdiagnosis. The aim of this study was to identify histologic criteria and diagnostic markers allowing for a more accurate diagnosis of EcPV2-associated equine penile lesions. Results A total of 61 archived equine penile lesions were histologically re-assessed and classified as benign hyperplasia, papilloma, CIS or SCC. From these, 19 representative lesions and adjacent normal skin were comparatively analysed for the presence of EcPV2 DNA and transcripts using PCR and RNA in situ hybridisation (RISH). All lesional samples were positive by EcPV2 PCR and RISH, while adjacent normal skin was negative. RISH analysis yielded signal distribution patterns that allowed distinction of early (hyperplasia, papilloma) from late stage lesions (CIS, SCC). Subsequently, the 19 lesions were further assessed for expression of p53, Ki67, MCM7 and MMP1 by immunohistochemistry (IHC). All four proteins were expressed in both normal and lesional tissue. However, p53 expression was up-regulated in basal keratinocyte layers of papillomas, CIS and SCCs, as well as in upper keratinocyte layers of CIS and SCCs. MCM7 expression was only up-regulated in upper proliferating keratinocyte layers of papillomas, CIS and SCCs. Conclusion This study proposes combining a refined histological protocol for analysis of equine penile lesions with PCR- and/or RISH based EcPV2-screening and p53/MCM7 IHC to more accurately determine the type of lesion. This may help to guide the choice of optimum treatment strategy, especially at early stages of disease.
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Affiliation(s)
- Anna Sophie Ramsauer
- Institute of Virology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland. .,Dermatology Department, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland.
| | - Garrett Louis Wachoski-Dark
- Department of Veterinary Clinical and Diagnostic Sciences, Faculty of Veterinary Medicine, University of Calgary, Calgary, Canada
| | - Cornel Fraefel
- Institute of Virology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
| | - Kurt Tobler
- Institute of Virology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
| | - Sabine Brandt
- Research Group Oncology, Equine Clinic, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Cameron Greig Knight
- Department of Veterinary Clinical and Diagnostic Sciences, Faculty of Veterinary Medicine, University of Calgary, Calgary, Canada
| | - Claude Favrot
- Dermatology Department, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
| | - Paula Grest
- Institute of Veterinary Pathology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
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