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Maekawa N, Konnai S, Asano Y, Sajiki Y, Deguchi T, Okagawa T, Watari K, Takeuchi H, Takagi S, Hosoya K, Kim S, Ohta H, Kato Y, Suzuki Y, Murata S, Ohashi K. Exploration of serum biomarkers in dogs with malignant melanoma receiving anti-PD-L1 therapy and potential of COX-2 inhibition for combination therapy. Sci Rep 2022; 12:9265. [PMID: 35665759 PMCID: PMC9166720 DOI: 10.1038/s41598-022-13484-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Accepted: 05/13/2022] [Indexed: 12/15/2022] Open
Abstract
Immune checkpoint inhibitors (ICIs) such as anti-PD-L1 antibodies are widely used to treat human cancers, and growing evidence suggests that ICIs are promising treatments for canine malignancies. However, only some canine oral malignant melanoma (OMM) cases respond to ICIs. To explore biomarkers predictive of survival in dogs with pulmonary metastatic OMM receiving the anti-PD-L1 antibody c4G12 (n = 27), serum concentrations of prostaglandin E2 (PGE2), cytokines, chemokines, and growth factors were measured prior to treatment initiation. Among 12 factors tested, PGE2, interleukin (IL)-12p40, IL-8, monocyte chemotactic protein-1 (MCP-1), and stem cell factor (SCF) were higher in OMM dogs compared to healthy dogs (n = 8). Further, lower baseline serum PGE2, MCP-1, and vascular endothelial growth factor (VEGF)-A concentrations as well as higher IL-2, IL-12, and SCF concentrations predicted prolonged overall survival. These observations suggest that PGE2 confers resistance against anti-PD-L1 therapy through immunosuppression and thus is a candidate target for combination therapy. Indeed, PGE2 suppressed IL-2 and interferon (IFN)-γ production by stimulated canine peripheral blood mononuclear cells (PBMCs), while inhibition of PGE2 biosynthesis using the COX-2 inhibitor meloxicam in combination with c4G12 enhanced Th1 cytokine production by PBMCs. Thus, serum PGE2 may be predictive of c4G12 treatment response, and concomitant use of COX-2 inhibitors may enhance ICI antitumor efficacy.
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Affiliation(s)
- Naoya Maekawa
- Department of Advanced Pharmaceutics, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Satoru Konnai
- Department of Advanced Pharmaceutics, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan.
- Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan.
| | - Yumie Asano
- Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Yamato Sajiki
- Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Tatsuya Deguchi
- Veterinary Teaching Hospital, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Tomohiro Okagawa
- Department of Advanced Pharmaceutics, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Kei Watari
- Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Hiroto Takeuchi
- Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Satoshi Takagi
- Veterinary Teaching Hospital, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
- Department of Veterinary Surgery 1, School of Veterinary Medicine, Azabu University, Sagamihara, Japan
| | - Kenji Hosoya
- Veterinary Teaching Hospital, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Sangho Kim
- Veterinary Teaching Hospital, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Hiroshi Ohta
- Veterinary Teaching Hospital, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Yukinari Kato
- Department of Antibody Drug Development, Tohoku University Graduate School of Medicine, Sendai, Japan
- Department of Molecular Pharmacology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Yasuhiko Suzuki
- Department of Advanced Pharmaceutics, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
- International Institute for Zoonosis Control, Hokkaido University, Sapporo, Japan
- Global Station for Zoonosis Control, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Sapporo, Japan
| | - Shiro Murata
- Department of Advanced Pharmaceutics, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
- Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Kazuhiko Ohashi
- Department of Advanced Pharmaceutics, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
- Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
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Berry A, Hayes A, Schiavo L, Dobson J. Multimodal Treatment of a Canine Lingual Melanoma Using a Combination of Immunotherapy and a Tyrosine Kinase Inhibitors. Vet Sci 2022; 9:vetsci9020054. [PMID: 35202307 PMCID: PMC8879531 DOI: 10.3390/vetsci9020054] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 01/12/2022] [Accepted: 01/27/2022] [Indexed: 02/04/2023] Open
Abstract
A 9-year-old female neutered Miniature Schnauzer was diagnosed with a lingual malignant melanoma on the basis of incisional biopsy and histopathology. The patient was initially given a guarded prognosis of a few months’ survival as surgical treatment options were declined by the owner. In order to control the disease a combination treatment of immunotherapy and tyrosine kinase inhibitors was initiated. The mass showed a marked and sustained reduction in size, whilst preserving quality of life for the patient, with a survival at the time of writing of 15 months since diagnosis. This experience suggests that combination therapy for oral malignant melanoma using immunotherapy and tyrosine kinase inhibitors may be successful in some patients and warrants further investigation.
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A Comparative View on Molecular Alterations and Potential Therapeutic Strategies for Canine Oral Melanoma. Vet Sci 2021; 8:vetsci8110286. [PMID: 34822659 PMCID: PMC8619620 DOI: 10.3390/vetsci8110286] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 11/17/2021] [Accepted: 11/18/2021] [Indexed: 12/14/2022] Open
Abstract
Canine oral melanoma (COM) is a highly aggressive tumour associated with poor prognosis due to metastasis and resistance to conventional anti-cancer therapies. As with human mucosal melanoma, the mutational landscape is predominated by copy number aberrations and chromosomal structural variants, but differences in study cohorts and/or tumour heterogeneity can lead to discordant results regarding the nature of specific genes affected. This review discusses somatic molecular alterations in COM that result from single nucleotide variations, copy number changes, chromosomal rearrangements, and/or dysregulation of small non-coding RNAs. A cross-species comparison highlights notable recurrent aberrations, and functionally grouping dysregulated proteins reveals unifying biological pathways that may be critical for oncogenesis and metastasis. Finally, potential therapeutic strategies are considered to target these pathways in canine patients, and the benefits of collaboration between science, medical, and veterinary communities are emphasised.
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Mariani CL, Niman ZE, Boozer LB, Ruterbories LK, Early PJ, Muñana KR, Olby NJ. Vascular endothelial growth factor concentrations in the cerebrospinal fluid of dogs with neoplastic or inflammatory central nervous system disorders. J Vet Intern Med 2021; 35:1873-1883. [PMID: 34105831 PMCID: PMC8295675 DOI: 10.1111/jvim.16181] [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: 02/27/2021] [Revised: 05/06/2021] [Accepted: 05/18/2021] [Indexed: 02/06/2023] Open
Abstract
Background Vascular endothelial growth factor (VEGF) is a key molecular driver of angiogenesis and vascular permeability and is expressed by a wide variety of neoplasms. Although blood VEGF concentrations have been quantified in intracranial tumors of dogs, cerebrospinal fluid (CSF) VEGF concentration might be a more sensitive biomarker of disease. Objective Concentrations of VEGF in CSF are higher in dogs with central nervous system (CNS) neoplasia compared to those with meningoencephalomyelitis and other neurologic disorders. Animals One hundred and twenty‐six client‐owned dogs presented to a veterinary teaching hospital. Methods Case‐control study. Cerebrospinal fluid was archived from dogs diagnosed with CNS neoplasia and meningoencephalomyelitis. Control dogs had other neurological disorders or diseases outside of the CNS. A commercially available kit was used to determine VEGF concentrations. Results Detectable CSF VEGF concentrations were present in 49/63 (77.8%) neoplastic samples, 22/24 (91.7%) inflammatory samples, and 8/39 (20.5%) control samples. The VEGF concentrations were significantly different between groups (P < .0001), and multiple comparison testing showed that both neoplastic and inflammatory groups had significantly higher concentrations than did controls (P < .05), but did not differ from each other. Gliomas and choroid plexus tumors had significantly higher VEGF concentrations than did the control group (P < .05). Conclusions and Clinical Importance Cerebrospinal fluid VEGF concentrations may serve as a marker of neoplastic and inflammatory CNS disorders relative to other conditions.
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Affiliation(s)
- Christopher L Mariani
- Comparative Neuroimmunology and Neuro-oncology Laboratory, North Carolina State University, Raleigh, North Carolina, USA.,Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina, USA.,Comparative Medicine Institute, North Carolina State University, Raleigh, North Carolina, USA
| | - Zachary E Niman
- Comparative Neuroimmunology and Neuro-oncology Laboratory, North Carolina State University, Raleigh, North Carolina, USA.,Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina, USA
| | - Lindsay B Boozer
- Comparative Neuroimmunology and Neuro-oncology Laboratory, North Carolina State University, Raleigh, North Carolina, USA
| | - Laura K Ruterbories
- Comparative Neuroimmunology and Neuro-oncology Laboratory, North Carolina State University, Raleigh, North Carolina, USA.,Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina, USA
| | - Peter J Early
- Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina, USA.,Comparative Medicine Institute, North Carolina State University, Raleigh, North Carolina, USA
| | - Karen R Muñana
- Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina, USA.,Comparative Medicine Institute, North Carolina State University, Raleigh, North Carolina, USA
| | - Natasha J Olby
- Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina, USA.,Comparative Medicine Institute, North Carolina State University, Raleigh, North Carolina, USA
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Ademi H, Shinde DA, Gassmann M, Gerst D, Chaachouay H, Vogel J, Gorr TA. Targeting neovascularization and respiration of tumor grafts grown on chick embryo chorioallantoic membranes. PLoS One 2021; 16:e0251765. [PMID: 33999935 PMCID: PMC8128225 DOI: 10.1371/journal.pone.0251765] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 05/02/2021] [Indexed: 12/25/2022] Open
Abstract
Since growing tumors stimulate angiogenesis, via vascular endothelial growth factor (VEGF), angiogenesis inhibitors (AIs, blockers of the VEGF signaling pathway) have been introduced to cancer therapy. However, AIs often yielded only modest and short-lived gains in cancer patients and more invasive tumor phenotypes in animal models. Combining anti-VEGF strategies with lactate uptake blockers may boost both efficacy and safety of AIs. We assessed this hypothesis by using the ex ovo chorioallantoic membrane (CAM) assay. We show that AI-based monotherapy (Avastin®, AVA) increases tumor hypoxia in human CAM cancer cell xenografts and cell spread in human as well as canine CAM cancer cell xenografts. In contrast, combining AVA treatment with lactate importer MCT1 inhibitors (α-cyano-4-hydroxycinnamic acid (CHC) or AZD3965 (AZD)) reduced both tumor growth and cell dissemination of human and canine explants. Moreover, combining AVA+AZD diminished blood perfusion and tumor hypoxia in human explants. Thus, the ex ovo CAM assay as an easy, fast and cheap experimental setup is useful for pre-clinical cancer research. Moreover, as an animal-free experimental setup the CAM assay can reduce the high number of laboratory animals used in pre-clinical cancer research.
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Affiliation(s)
- Hyrije Ademi
- Institute of Veterinary Physiology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
- Center for Clinical Studies at the Vetsuisse Faculty of the University of Zurich, Zurich, Switzerland
| | - Dheeraj A. Shinde
- Institute of Veterinary Physiology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
| | - Max Gassmann
- Institute of Veterinary Physiology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
- Zurich Centre for Integrative Human Physiology (ZIHP), University of Zurich, Zurich, Switzerland
| | - Daniela Gerst
- Institute of Veterinary Physiology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
| | - Hassan Chaachouay
- Division of Radiation Oncology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
- Bioactives, Health & Environment Laboratory, Epigenetics, Health & Environment Unit, Faculty of Science and Techniques, Moulay Ismail University, Errachidia, Morocco
| | - Johannes Vogel
- Institute of Veterinary Physiology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
| | - Thomas A. Gorr
- Institute of Veterinary Physiology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
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Hristov TT, Binev RG. Blood and urine concentrations of vascular endothelial growth factor in dogs with tumours. BULGARIAN JOURNAL OF VETERINARY MEDICINE 2021. [DOI: 10.15547/bjvm.2264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Vascular endothelial growth factor (VEGF) is a potent mitogen for vascular endothelial cells. It improves cell survival, stimulates angiogenesis, inhibits cell apoptosis and strongly enhances vascular permeability. In this study, VEGF concentrations were assayed in blood plasma and urine of 22 dogs with neoplasms (lymphosarcoma, splenic haemangiosarcoma and mammary gland carcinoma) and in 7 healthy dogs by means of ELISA. Average blood plasma VEGF in control dogs was 42.13 ± 7.37 pg/mL, while in dogs with lymphoma – 113.35 ± 16.48 pg/mL, in dogs with haemangiosarcoma – 154.85 ± 48.46 pg/mL and in dogs with mammary gland carcinoma – 104.31 ± 12.45 pg/mL. Urine VEGF concentrations in dogs affected with lymphosarcoma were 712.42 ± 233.85 ng/g uCr, in animals with haemangiosarcoma – 223.50 ± 262.33 ng/g uCr and in those with mammary carcinoma: 1053.92 ± 311.63 ng/g uCr. In healthy controls average urine VEGF was 310.11 ± 28.11 ng/g uCr.
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Affiliation(s)
- Ts. T. Hristov
- Department of Internal Non-infections Diseases, Faculty of Veterinary Medicine, Trakia University, Stara Zagora, Bulgaria
| | - R. G. Binev
- Department of Internal Non-infections Diseases, Faculty of Veterinary Medicine, Trakia University, Stara Zagora, Bulgaria
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Investigating associations of cyclooxygenase-2 expression with angiogenesis, proliferation, macrophage and T-lymphocyte infiltration in canine melanocytic tumours. Melanoma Res 2016; 26:338-47. [DOI: 10.1097/cmr.0000000000000262] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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8
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Gramer I, Killick D, Scase T, Chandry D, Marrington M, Blackwood L. Expression of VEGFR and PDGFR-α/-β in 187 canine nasal carcinomas. Vet Comp Oncol 2016; 15:1041-1050. [PMID: 27278115 DOI: 10.1111/vco.12245] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2016] [Revised: 04/15/2016] [Accepted: 04/30/2016] [Indexed: 12/23/2022]
Abstract
Radiotherapy represents the standard of care for intranasal carcinomas. Responses to tyrosine kinase inhibitors (TKIs) have been reported but data on expression of target receptor tyrosine kinases (rTKs) is limited. This study characterizes the expression of vascular endothelial growth factor receptor (VEGFR), platelet-derived growth factor receptor (PDGFR)-α and PDGFR-β in canine intranasal carcinomas. Histological samples from 187 dogs were retrieved. Immunohistochemistry was performed using commercially available antibodies. Expression of rTKs was classified into weak, moderate or intense and additionally recorded as cytoplasmic, membranous, cytoplasmic-membranous, nuclear or stromal. VEGFR was expressed in 158 dogs with predominantly moderate expression (36.9%) and a cytoplasmic-membranous expression pattern (70.9%). PDGFR-α was detected in 133 with predominantly weak expression (57.9%) and cytoplasmic pattern (87.9%). PDGFR-β was identified in 74 patients with a predominantly moderate expression (17.6%) and cytoplasmic expression pattern (63.5%). Co-expression of rTKs was common. These results confirm expression of VEGFR, PDGFR-α and PDGFR-β in canine intranasal carcinomas and support the utility of TKIs.
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Affiliation(s)
- I Gramer
- Small Animal Teaching Hospital, Leahurst Campus, University of Liverpool, Neston CH64 7TE, United Kingdom
| | - D Killick
- Small Animal Teaching Hospital, Leahurst Campus, University of Liverpool, Neston CH64 7TE, United Kingdom
| | - T Scase
- Bridge Pathology Ltd., Bristol BS7 0BJ, UK
| | - D Chandry
- Bridge Pathology Ltd., Bristol BS7 0BJ, UK
| | - M Marrington
- Small Animal Teaching Hospital, Leahurst Campus, University of Liverpool, Neston CH64 7TE, United Kingdom
| | - L Blackwood
- Small Animal Teaching Hospital, Leahurst Campus, University of Liverpool, Neston CH64 7TE, United Kingdom
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Boston SE, Lu X, Culp WTN, Montinaro V, Romanelli G, Dudley RM, Liptak JM, Mestrinho LA, Buracco P. Efficacy of systemic adjuvant therapies administered to dogs after excision of oral malignant melanomas: 151 cases (2001-2012). J Am Vet Med Assoc 2015; 245:401-7. [PMID: 25075823 DOI: 10.2460/javma.245.4.401] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To determine prognostic factors for and compare outcome among dogs with oral malignant melanoma following excision with or without various systemic adjuvant therapies. DESIGN Retrospective case series. ANIMALS 151 dogs with naturally occurring oral malignant melanomas treated by excision with or without adjuvant therapies from 2001 to 2012. PROCEDURES Case accrual was solicited from Veterinary Society of Surgical Oncology members via an email list service. Information collected from case records included signalment, tumor staging, tumor characteristics, type of surgical excision, histologic diagnosis, adjuvant therapy, and survival time. RESULTS The overall median survival time was 346 days. Results of multivariate analysis indicated that tumor size, patient age, and intralesional excision (vs marginal, wide, or radical excision) were considered poor prognostic indicators. All other demographic and clinical variables were not significantly associated with survival time after adjusting for the aforementioned 3 variables. A clear survival benefit was not evident with any systemic adjuvant therapy, including vaccination against melanoma or chemotherapy; however, the number of dogs in each treatment group was small. Ninety-eight dogs received no postoperative adjuvant therapy, and there was no difference in survival time between dogs that did (335 days) and did not (352 days) receive systemic adjuvant therapy. CONCLUSIONS AND CLINICAL RELEVANCE For dogs with oral malignant melanoma, increasing tumor size and age were negative prognostic factors. Complete excision of all macroscopic tumor burden improved survival time. Long-term survival was possible following surgery alone. Although systemic adjuvant therapy was not found to improve survival time, this could have been due to type II error.
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Affiliation(s)
- Sarah E Boston
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL 32608
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Sobczyńska-Rak A, Polkowska I, Silmanowicz P. Elevated Vascular Endothelial Growth Factor (VEGF) levels in the blood serum of dogs with malignant neoplasms of the oral cavity. Acta Vet Hung 2014; 62:362-71. [PMID: 24659713 DOI: 10.1556/avet.2014.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Angiogenesis plays an essential role in the development of a neoplastic tumour by conditioning both its growth and the formation of metastases. The induction of blood vessel growth occurs under the influence of proangiogenic factors, among which Vascular Endothelial Growth Factor (VEGF) seems to be the most important. The aim of this research was to study the level of VEGF measured by ELISA in the serum of dogs with neoplasms of the oral cavity. The study material comprised samples of neoplastic tissue from 17 operated dogs and the serum of the examined animals as well as of dogs from the control group. The tissue samples were taken from dogs of different breeds, aged 6-14 years. The tumour type was determined in accordance with the applicable WHO classification. Blood samples taken from sick dogs and from animals of the control group were centrifuged, and immunoenzymatic labelling of VEGF was performed in the obtained serum using ELISA and R&D system reagents (Quantikine Canine VEGF). All stages of VEGF labelling were performed according to the recommendation of the test manufacturer. The median of VEGF in the serum of the dogs with neoplasms of the oral cavity was 40.64 pg/mL. The lowest value of 14.26 pg/mL was observed in the case of fibrosarcoma, and the highest value of 99.19 pg/mL in the case of squamous cell carcinoma. The VEGF median in the control group amounted to 11.14 pg/mL whereas the VEGF value in the groups of animals diagnosed with benign tumours ranged between 2.30 and 19.74 pg/mL. Elevated VEGF in the blood serum, in comparison with the benign tumour group and the control group, was observed in all examined neoplasms of the oral cavity. It was suggested that overexpression of VEGF can have a prognostic value and is useful in the early detection of neoplasms.
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Affiliation(s)
- Aleksandra Sobczyńska-Rak
- 1 University of Life Sciences in Lublin Department and Clinic of Animal Surgery, Faculty of Veterinary Medicine Lublin Poland
| | - Izabela Polkowska
- 1 University of Life Sciences in Lublin Department and Clinic of Animal Surgery, Faculty of Veterinary Medicine Lublin Poland
| | - Piotr Silmanowicz
- 1 University of Life Sciences in Lublin Department and Clinic of Animal Surgery, Faculty of Veterinary Medicine Lublin Poland
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Choisunirachon N, Jaroensong T, Yoshida K, Saeki K, Mochizuki M, Nishimura R, Sasaki N, Nakagawa T. Effects of low-dose cyclophosphamide with piroxicam on tumour neovascularization in a canine oral malignant melanoma-xenografted mouse model. Vet Comp Oncol 2013; 13:424-32. [DOI: 10.1111/vco.12059] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- N. Choisunirachon
- Laboratory of Veterinary Surgery, Graduate School of Agricultural and Life Sciences; The University of Tokyo; Tokyo Japan
- Department of Veterinary Surgery; Faculty of Veterinary Science, Chulalongkorn University; Bangkok Thailand
| | - T. Jaroensong
- Laboratory of Veterinary Surgery, Graduate School of Agricultural and Life Sciences; The University of Tokyo; Tokyo Japan
- Department of Companion Animal Clinical Sciences; Faculty of Veterinary Medicine, Kasetsart University; Bangkok Thailand
| | - K. Yoshida
- Laboratory of Veterinary Surgery, Graduate School of Agricultural and Life Sciences; The University of Tokyo; Tokyo Japan
| | - K. Saeki
- Laboratory of Veterinary Surgery, Graduate School of Agricultural and Life Sciences; The University of Tokyo; Tokyo Japan
| | - M. Mochizuki
- Laboratory of Veterinary Surgery, Graduate School of Agricultural and Life Sciences; The University of Tokyo; Tokyo Japan
| | - R. Nishimura
- Laboratory of Veterinary Surgery, Graduate School of Agricultural and Life Sciences; The University of Tokyo; Tokyo Japan
| | - N. Sasaki
- Laboratory of Veterinary Surgery, Graduate School of Agricultural and Life Sciences; The University of Tokyo; Tokyo Japan
| | - T. Nakagawa
- Laboratory of Veterinary Surgery, Graduate School of Agricultural and Life Sciences; The University of Tokyo; Tokyo Japan
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Flickinger I, Rütgen BC, Gerner W, Calice I, Tichy A, Saalmüller A, Kleiter M. Radiation up-regulates the expression of VEGF in a canine oral melanoma cell line. J Vet Sci 2013; 14:207-14. [PMID: 23814474 PMCID: PMC3694193 DOI: 10.4142/jvs.2013.14.2.207] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2012] [Revised: 05/09/2012] [Accepted: 08/30/2012] [Indexed: 11/20/2022] Open
Abstract
To evaluate radiosensitivity and the effects of radiation on the expression of vascular endothelial growth factor (VEGF) and VEGF receptors in the canine oral melanoma cell line, TLM 1, cells were irradiated with doses of 0, 2, 4, 6, 8 and 10 Gray (Gy). Survival rates were then determined by a MTT assay, while vascular endothelial growth factor receptor (VEGFR)-1 and -2 expression was measured by flow cytometry and apoptotic cell death rates were investigated using an Annexin assay. Additionally, a commercially available canine VEGF ELISA kit was used to measure VEGF. Radiosensitivity was detected in TLM 1 cells, and mitotic and apoptotic cell death was found to occur in a radiation dose dependent manner. VEGF was secreted constitutively and significant up-regulation was observed in the 8 and 10 Gy irradiated cells. In addition, a minor portion of TLM 1 cells expressed vascular endothelial growth factor receptor (VEGFR)-1 intracellularly. VEGFR-2 was detected in the cytoplasm and was down-regulated following radiation with increasing dosages. In TLM 1 cells, apoptosis plays an important role in radiation induced cell death. It has also been suggested that the significantly higher VEGF production in the 8 and 10 Gy group could lead to tumour resistance.
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Affiliation(s)
- Irene Flickinger
- Clinic for Internal Medicine and Infectious Diseases, Institute of Immunology, University of Veterinary Medicine, 1210 Vienna, Austria.
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Wolfesberger B, Tonar Z, Fuchs-Baumgartinger A, Walter I, Skalicky M, Witter K, Thalhammer JG, Pagitz M, Kleiter M. Angiogenic markers in canine lymphoma tissues do not predict survival times in chemotherapy treated dogs. Res Vet Sci 2011; 92:444-50. [PMID: 21596405 DOI: 10.1016/j.rvsc.2011.04.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2010] [Revised: 04/19/2011] [Accepted: 04/25/2011] [Indexed: 10/18/2022]
Abstract
Angiogenesis, which is essential for malignancies to progress, depends on various signalling proteins including vascular endothelial growth factor (VEGF) and vascular endothelial growth factor receptors 1 and 2 (VEGFR-1 and VEGFR-2). Microvessel density (MVD) is frequently used to evaluate angiogenesis. This study assessed the relationship between expression of VEGF, VEGFR-1 and VEGFR-2, MVD and the survival time in dogs with lymphoma. VEGF, VEGFR-1 and VEGFR-2 expression was evaluated immunohistochemically and microvessel profiles were counted in 34 lymphoma samples. Seventy-nine percent of the samples showed high VEGF expression and 62% were highly positive for VEGFR-1; VEGFR-2 immunoreactivity was mostly negative. Dogs treated with chemotherapy had a median survival time of 266days, but no significant relationships were found between overall survival time, MVD and expression of VEGF, VEGFR-1 or VEGFR-2. In this study, VEGF its receptors and the MVD were no prognostic factors in dogs with lymphoma.
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Affiliation(s)
- B Wolfesberger
- Department for Companion Animals and Horses, University of Veterinary Medicine, Vienna, Austria.
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Abrams KL, Stabila PF, Kauper K, Elliott S. Vascular endothelial growth factor in diabetic and nondiabetic canine cataract patients. Vet Ophthalmol 2011; 14:93-9. [DOI: 10.1111/j.1463-5224.2010.00846.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Shiomitsu K, Johnson CL, Malarkey DE, Pruitt AF, Thrall DE. Expression of epidermal growth factor receptor and vascular endothelial growth factor in malignant canine epithelial nasal tumours*. Vet Comp Oncol 2009. [DOI: 10.1111/j.1476-5829.2008.00178.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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