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Rodrigues-Jesus J, Canadas-Sousa A, Oliveira P, Figueira AC, Marrinhas C, Petrucci GN, Gregório H, Tinoco F, Goulart A, Felga H, Vilhena H, Dias-Pereira P. Distribution of Inflammatory Infiltrate in Feline Mammary Lesions: Relationship With Clinicopathological Features. Vet Comp Oncol 2024. [PMID: 38863270 DOI: 10.1111/vco.12987] [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: 01/30/2024] [Revised: 03/25/2024] [Accepted: 05/21/2024] [Indexed: 06/13/2024]
Abstract
Inflammation is a frequent finding in feline mammary neoplasms. Recent research suggests that the presence and location of tumour-associated immune cells might play a significant role in the clinical outcome of feline mammary carcinomas. The present study aimed to characterise the overall inflammatory infiltrates in healthy, hyperplastic/dysplastic, benign and malignant lesions of the feline mammary gland, and to evaluate its association with clinicopathological features. Perilesional and intralesional inflammatory foci were evaluated in 307 lesions from 185 queens, and categorised according to its distribution and intensity. The presence, location and density of tertiary lymphoid structures were also assessed. A control group included 24 queens without mammary changes. The presence of intralesional and perilesional inflammatory infiltrate was observed in a majority of the lesions (80.8% and 90.2%, respectively), but differed according to the type of mammary lesion, being more remarkable in malignant neoplasms. Only scarce individual cells were observed in 28.1% of the normal mammary glands. Data analysis revealed statistically significant associations (p < 0.05) between the presence of a more prominent intralesional and perilesional inflammatory reaction and several clinicopathological features associated with worse prognosis, including clinical stage, tumour size, mitotic count, lymphovascular invasion and lymph node metastasis. Furthermore, tertiary lymphoid structures were significantly more frequent in tumours with an infiltrative growth and lymph node metastasis. According to our results, the inflammatory reaction present in different types of feline mammary lesions is associated with the development of more aggressive tumours.
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Affiliation(s)
- Joana Rodrigues-Jesus
- Department of Pathology and Molecular Immunology, School of Medicine and Biomedical Sciences, ICBAS-UP, University of Porto, Porto, Portugal
| | - Ana Canadas-Sousa
- Department of Pathology and Molecular Immunology, School of Medicine and Biomedical Sciences, ICBAS-UP, University of Porto, Porto, Portugal
| | - Pedro Oliveira
- Department of Populations Studies, School of Medicine and Biomedical Sciences, ICBAS-UP, University of Porto, Porto, Portugal
| | - Ana Catarina Figueira
- OneVet Veterinary University Hospital of Coimbra (HVUC), Coimbra, Portugal
- Centre for Investigation Vasco da Gama (CIVG), Department of Veterinary Sciences, Vasco da Gama University School, Coimbra, Portugal
| | - Carla Marrinhas
- Centre for Investigation Vasco da Gama (CIVG), Department of Veterinary Sciences, Vasco da Gama University School, Coimbra, Portugal
- OneVet Veterinary Hospital of Baixo Vouga (HVBV), Águeda, Portugal
| | - Gonçalo N Petrucci
- Centre for Investigation Vasco da Gama (CIVG), Department of Veterinary Sciences, Vasco da Gama University School, Coimbra, Portugal
- OneVet Veterinary Hospital of Porto (HVP), Porto, Portugal
- Department of Animal and Veterinary Sciences, University Institute for Health Sciences, CESPU, CRL, Gandra, Portugal
| | - Hugo Gregório
- Department of Animal and Veterinary Sciences, University Institute for Health Sciences, CESPU, CRL, Gandra, Portugal
- AniCura Veterinary Hospital Centre (CHV), Porto, Portugal
| | - Flora Tinoco
- Dra. Flora Tinoco Veterinary Clinic, Maia, Portugal
| | | | - Helena Felga
- Clínica dos Gatos Veterinary Clinic, Porto, Portugal
| | - Hugo Vilhena
- OneVet Veterinary University Hospital of Coimbra (HVUC), Coimbra, Portugal
- Centre for Investigation Vasco da Gama (CIVG), Department of Veterinary Sciences, Vasco da Gama University School, Coimbra, Portugal
- Animal and Veterinary Research Centre (CECAV), University of Trás-os-Montes e Alto Douro, Vila Real, Portugal
- Associate Laboratory of Animal and Veterinary Sciences AL4AnimaLS, Lisbon, Portugal
| | - Patrícia Dias-Pereira
- Department of Pathology and Molecular Immunology, School of Medicine and Biomedical Sciences, ICBAS-UP, University of Porto, Porto, Portugal
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Brachelente C, Torrigiani F, Porcellato I, Drigo M, Brescia M, Treggiari E, Ferro S, Zappulli V, Sforna M. Tumor Immune Microenvironment and Its Clinicopathological and Prognostic Associations in Canine Splenic Hemangiosarcoma. Animals (Basel) 2024; 14:1224. [PMID: 38672372 PMCID: PMC11047608 DOI: 10.3390/ani14081224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 04/11/2024] [Accepted: 04/16/2024] [Indexed: 04/28/2024] Open
Abstract
Tumor cells can induce important cellular and molecular modifications in the tissue or host where they grow. The idea that the host and tumor interact with each other has led to the concept of a tumor microenvironment, composed of immune cells, stromal cells, blood vessels, and extracellular matrix, representing a unique environment participating and, in some cases, promoting cancer progression. The study of the tumor immune microenvironment, particularly focusing on the role of tumor-infiltrating lymphocytes (TILs), is highly relevant in oncology due to the prognostic and therapeutic significance of TILs in various tumors and their identification as targets for therapeutic intervention. Canine splenic hemangiosarcoma (HSA) is a common tumor; however, its immune microenvironment remains poorly understood. This retrospective study aimed to characterize the histological and immunohistochemical features of 56 cases of canine splenic HSA, focusing particularly on tumor-infiltrating lymphocytes (TILs). We assessed the correlations between the lymphocytic response, the macroscopic and histological characteristics of the tumor, and the survival data. Our study demonstrated that FoxP3 distribution was associated with tumor-related death and survival, while the CD20 count was associated with metastasis. This study provides an in-depth characterization of the tumor immune microenvironment in canine splenic HSA and describes potential prognostic factors.
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Affiliation(s)
- Chiara Brachelente
- Department of Veterinary Medicine, University of Perugia, Via San Costanzo 4, 06126 Perugia, Italy; (C.B.); (M.B.); (M.S.)
| | - Filippo Torrigiani
- Department of Comparative Biomedicine and Food Science, University of Padua, AGRIPOLIS, Viale dell’Università 16, 35020 Legnaro, Italy; (F.T.); (S.F.); (V.Z.)
| | - Ilaria Porcellato
- Department of Veterinary Medicine, University of Perugia, Via San Costanzo 4, 06126 Perugia, Italy; (C.B.); (M.B.); (M.S.)
| | - Michele Drigo
- Department of Animal Medicine, Production and Health, University of Padua, AGRIPOLIS, Viale dell’Università 16, 35020 Legnaro, Italy;
| | - Martina Brescia
- Department of Veterinary Medicine, University of Perugia, Via San Costanzo 4, 06126 Perugia, Italy; (C.B.); (M.B.); (M.S.)
| | - Elisabetta Treggiari
- Clinica Veterinaria Croce Blu, via San Giovanni Bosco 27/C, 15121 Alessandria, Italy;
| | - Silvia Ferro
- Department of Comparative Biomedicine and Food Science, University of Padua, AGRIPOLIS, Viale dell’Università 16, 35020 Legnaro, Italy; (F.T.); (S.F.); (V.Z.)
| | - Valentina Zappulli
- Department of Comparative Biomedicine and Food Science, University of Padua, AGRIPOLIS, Viale dell’Università 16, 35020 Legnaro, Italy; (F.T.); (S.F.); (V.Z.)
| | - Monica Sforna
- Department of Veterinary Medicine, University of Perugia, Via San Costanzo 4, 06126 Perugia, Italy; (C.B.); (M.B.); (M.S.)
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Liu Y, Chen S, Wen Z, Meng J, Yang Y, Zhang Y, Wang J, Cao X. Comparative pharmacokinetics of free doxorubicin and a liposomal formulation in cats following intravenous administration. Front Vet Sci 2024; 11:1353775. [PMID: 38298449 PMCID: PMC10827984 DOI: 10.3389/fvets.2024.1353775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Accepted: 01/08/2024] [Indexed: 02/02/2024] Open
Abstract
Doxorubicin, a potent chemotherapeutic agent used extensively in cancer treatment, displays complex pharmacokinetic behavior, especially across various formulations. With a rising incidence of cancer cases in cats, understanding the drug's pharmacokinetics in feline subjects remains a critical yet unexplored area. Hence, this study investigated the pharmacokinetic profile of doxorubicin after slow intravenous administration of doxorubicin hydrochloride (DOX·HCl) or doxorubicin hydrochloride pegylated liposome (DOX·HCl-PLI) in twelve cats at a single dose of 20 mg/m2. Blood samples collected at pretreatment time (0 h) and over 192 h were analyzed using ultra-performance liquid chromatography-mass spectrometry (UPLC-MS/MS). The obtained pharmacokinetic parameters of doxorubicin revealed significant differences between the two formulations and were as follows: elimination half-life (T1/2λz) of 5.00 ± 3.20 h (DOX·HCl) and 17.62 ± 8.13 h (DOX·HCl-PLI), area under the concentration/time curve from 0 to last point (AUClast) of 0.67 ± 0.12 μg hr./mL (DOX·HCl) and 783.09 ± 267.29 μg hr./mL (DOX·HCl-PLI), and total body clearance (CL_obs) of 27098.58 ± 5205.19 mL/h/m2 (DOX·HCl) and 28.65 ± 11.09 mL/h/m2 (DOX·HCl-PLI). Additionally, differences were also detected in the apparent volume of distribution (Vz_obs) with 178.56 ± 71.89 L/m2 (DOX·HCl) and 0.64 ± 0.20 L/m2 (DOX·HCl-PLI), and the maximum plasma concentration (Cmax) with 2.25 ± 0.30 μg/mL (DOX·HCl) and 24.02 ± 5.45 μg/mL (DOX·HCl-PLI). Notably, low concentration of doxorubicinol, the metabolite of doxorubicin, was detected in plasma after administration of DOX·HCl, with even less present when DOX·HCl-PLI was administered. This investigation provides valuable insights into the distinct pharmacokinetic behaviors of DOX·HCl and DOX·HCl-PLI in cats, contributing essential groundwork for future studies and potential clinical applications in feline oncology.
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Affiliation(s)
- Yu Liu
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Sumeng Chen
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Zeyu Wen
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Jinyan Meng
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Yuxin Yang
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Yang Zhang
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Jianzhong Wang
- Shanxi Key Laboratory for Modernization of TCVM, College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong, China
| | - Xingyuan Cao
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, China Agricultural University, Beijing, China
- Key Laboratory of Detection for Veterinary Drug Residue and Illegal Additive, Ministry of Agriculture and Rural Affairs, Beijing, China
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Ehsani R, Jonassen I, Akslen LA, Kleftogiannis D. LOCATOR: feature extraction and spatial analysis of the cancer tissue microenvironment using mass cytometry imaging technologies. BIOINFORMATICS ADVANCES 2023; 3:vbad146. [PMID: 37881170 PMCID: PMC10597586 DOI: 10.1093/bioadv/vbad146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 10/02/2023] [Accepted: 10/10/2023] [Indexed: 10/27/2023]
Abstract
Motivation Recent advances in highly multiplexed imaging have provided unprecedented insights into the complex cellular organization of tissues, with many applications in translational medicine. However, downstream analyses of multiplexed imaging data face several technical limitations, and although some computational methods and bioinformatics tools are available, deciphering the complex spatial organization of cellular ecosystems remains a challenging problem. Results To mitigate this problem, we develop a novel computational tool, LOCATOR (anaLysis Of CAncer Tissue micrOenviRonment), for spatial analysis of cancer tissue microenvironments using data acquired from mass cytometry imaging technologies. LOCATOR introduces a graph-based representation of tissue images to describe features of the cellular organization and deploys downstream analysis and visualization utilities that can be used for data-driven patient-risk stratification. Our case studies using mass cytometry imaging data from two well-annotated breast cancer cohorts re-confirmed that the spatial organization of the tumour-immune microenvironment is strongly associated with the clinical outcome in breast cancer. In addition, we report interesting potential associations between the spatial organization of macrophages and patients' survival. Our work introduces an automated and versatile analysis tool for mass cytometry imaging data with many applications in future cancer research projects. Availability and implementation Datasets and codes of LOCATOR are publicly available at https://github.com/RezvanEhsani/LOCATOR.
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Affiliation(s)
- Rezvan Ehsani
- Department of Informatics, Computational Biology Unit, University of Bergen, Bergen N-5020, Norway
- Centre for Cancer Biomarkers CCBIO, Department of Clinical Medicine, University of Bergen, Bergen N-5020, Norway
| | - Inge Jonassen
- Department of Informatics, Computational Biology Unit, University of Bergen, Bergen N-5020, Norway
- Centre for Cancer Biomarkers CCBIO, Department of Clinical Medicine, University of Bergen, Bergen N-5020, Norway
| | - Lars A Akslen
- Centre for Cancer Biomarkers CCBIO, Department of Clinical Medicine, University of Bergen, Bergen N-5020, Norway
- Department of Pathology, Haukeland University Hospital, Bergen N-5020, Norway
| | - Dimitrios Kleftogiannis
- Department of Informatics, Computational Biology Unit, University of Bergen, Bergen N-5020, Norway
- Centre for Cancer Biomarkers CCBIO, Department of Clinical Medicine, University of Bergen, Bergen N-5020, Norway
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Frénel JS, Nguyen F. Mammary carcinoma: Comparative oncology between small animals and humans-New therapeutic tools. Reprod Domest Anim 2023; 58 Suppl 2:102-108. [PMID: 37312625 DOI: 10.1111/rda.14408] [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: 04/24/2023] [Revised: 06/01/2023] [Accepted: 06/10/2023] [Indexed: 06/15/2023]
Abstract
The poor outcomes associated with mammary carcinomas (MCs) in dogs and cats in terms of locoregional recurrence, distant metastasis and survival, highlight the need for better management of mammary cancers in small animals. By contrast, the outcomes of women with breast cancer (BC) have dramatically improved during the last 10 years, notably thanks to new therapeutic strategies. The aim of this article was to imagine what could be the future of therapy for dogs and cats with MCs if it became inspired from current practices in human BC. This article focuses on the importance of taking into account cancer stage and cancer subtypes in therapeutic plans, on locoregional treatments (surgery, radiation therapy), new developments in endocrine therapy, chemotherapy, PARP inhibitors and immunotherapy. Ideally, multimodal treatment regimens would be chosen according to cancer stage and cancer subtypes, and according to predictive factors that are still to be defined.
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Affiliation(s)
- Jean-Sébastien Frénel
- Nantes Université, University of Angers, INSERM, CRCI2NA, Nantes, France
- Institut de Cancérologie de l'Ouest, Site René Gauducheau, Saint-Herblain, France
| | - Frédérique Nguyen
- Nantes Université, University of Angers, INSERM, CRCI2NA, Nantes, France
- Oniris, Nantes, France
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Marshall T, Chen J, Viloria-Petit AM. Adipocyte-Derived Adipokines and Other Obesity-Associated Molecules in Feline Mammary Cancer. Biomedicines 2023; 11:2309. [PMID: 37626804 PMCID: PMC10452835 DOI: 10.3390/biomedicines11082309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 07/30/2023] [Accepted: 08/16/2023] [Indexed: 08/27/2023] Open
Abstract
Obesity has been identified as a serious health concern in domestic cats. Feline mammary cancer (FMC) is also a concern, as it is highly prevalent and aggressive. Considering the identified connection between obesity and breast cancer, it is worthwhile to investigate the potential obesity-cancer relationship in FMC. This review investigated the association between adipokines and other obesity-associated molecules and FMC, with the aim of identifying gaps in the current literature for future research. Based on the reports to date, it was found that tissue concentrations of leptin, serum concentrations of leptin receptor, serum amyloid A, and estrogen correlate positively with FMC, and serum concentrations of leptin correlate negatively with FMC. The roles of adiponectin and prolactin in FMC development were also investigated, but the reports are either lacking or insufficient to suggest an association. Numerous research gaps were identified and could be used as opportunities for future research. These include the need for studies on additional cohorts to confirm the association of leptin/leptin receptor and serum amyloid A with FMC, and to address the role of adiponectin and prolactin in FMC. It is also important to investigate the genetic determinants of FMC, evaluate the use of molecular-targeted therapies in FMC, and exploit the enrichment of the triple-negative immunophenotype in FMC to address current clinical needs for both human triple-negative breast cancer and FMC. Finally, mechanistic studies with any of the molecules reviewed are scarce and are important to generate hypotheses and ultimately advance our knowledge and the outcome of FMC.
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Affiliation(s)
| | | | - Alicia M. Viloria-Petit
- Department of Biomedical Sciences, Ontario Veterinary College, University of Guelph, Guelph, ON N1G 2W1, Canada; (T.M.); (J.C.)
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Günay Uçmak Z, Koenhemsi L, Ateş F, Tarhan D, Öztürk Gürgen H, Yildirim F, Uçmak M, Kirşan İ, Ercan AM, Or ME. Amounts of tissue magnesium and some trace elements in cats with mammary tumors related to various clinicopathological parameters. J Trace Elem Med Biol 2023; 79:127246. [PMID: 37393772 DOI: 10.1016/j.jtemb.2023.127246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Revised: 06/14/2023] [Accepted: 06/19/2023] [Indexed: 07/04/2023]
Abstract
BACKGROUND Mammary tumors are one of the major malignancies seen in cats. Researchers have indicated the similarity between the epidemiological and clinicopathological patterns of feline mammary tumors and human breast cancer (HBC). In recent years, the investigation of trace elements in cancer tissues becomes prevalent in HBC due to the role of these elements in biochemical and physiological processes. This study, it is aimed to evaluate some trace elements in feline mammary tumors according to clinical and pathological findings. METHODS A total of 60 tumoral masses from 16 female cats with mammary tumors were included in the study. The study groups were formed according to histopathology as malignant epithelial tumor (MET; n = 39) and hyperplasia and dysplasia (H&D; n = 21). Copper (Cu), Iron (Fe), Magnesium (Mg), Manganese (Mn), Selenium (Se) and Zinc (Zn) trace elements in mammary tissues were analyzed by using an inductively coupled plasma-optical emission spectrophotometer. RESULTS The mean age and weight of the cats were 11.75 ± 0.75 years and 3.35 ± 0.21 kg; respectively. Eleven of 16 cats were intact whereas the rest of them had been spayed. Metastases were observed in 10 cats. Tissue Mg level in group MET was significantly higher than in group H&D (P < 0.01) while the other elements had not significant differences between the groups. In group MET, analyzed elements were not statistically significant related to the inflammation, ulceration and invasion to the peripheral muscle (P > 0.05). However, tissue Fe level was significantly higher in T2 than in T3 (P < 0.05). The mean levels of tissue Fe, Mg and Mn had significant differences related to histological grading as P < 0.01, P < 0.05 and P < 0.001; respectively. A mild to severe correlation was found between tissue Zn and Se, Cu, Fe, Mg, and Mn levels. CONCLUSION Tissue Mg and some trace elements were evaluated in feline mammary tumours in regard to various clinicopathological parameters. Tissue Mg level was sufficient to differentiate the malignant epithelial tumors from hyperplasia and dysplasia. However, Mn and Se tended to distinguish different tumor types. Tissue Fe, Mg and Mn had significant differences related to histological grading. Also, the Fe level was significantly higher in T2 than in T3 and Zn level tended to be higher in T3 than in T1. It was concluded that Mg, Se, Mn, Fe, Cu and Zn provided useful information on the pathogenesis of feline mammary tumors. Further research is needed on the tissue and serum concentrations of trace elements which may provide valuable information for the disease prognosis.
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Affiliation(s)
- Zeynep Günay Uçmak
- Department of Obstetrics and Gynaecology, Faculty of Veterinary Medicine, Istanbul University-Cerrahpaşa, Avcılar, Istanbul, Türkiye.
| | - Lora Koenhemsi
- Department of Internal Medicine, Faculty of Veterinary Medicine, Istanbul University-Cerrahpaşa, Avcılar, Istanbul, Türkiye
| | - Fatma Ateş
- Department of Biophysics, Faculty of Medicine, Beykent University, Büyükçekmece, Istanbul, Türkiye
| | - Duygu Tarhan
- Department of Biophysics, Cerrahpaşa Faculty of Medicine, Istanbul University-Cerrahpaşa, Fatih, Istanbul, Türkiye; Department of Biophysics, School of Medicine, Bahcesehir University, Istanbul, Türkiye
| | - Hazal Öztürk Gürgen
- Department of Pathology, Faculty of Veterinary Medicine, Istanbul University-Cerrahpaşa, Büyükçemece, Istanbul, Türkiye
| | - Funda Yildirim
- Department of Pathology, Faculty of Veterinary Medicine, Istanbul University-Cerrahpaşa, Büyükçemece, Istanbul, Türkiye
| | - Melih Uçmak
- Department of Obstetrics and Gynaecology, Faculty of Veterinary Medicine, Istanbul University-Cerrahpaşa, Avcılar, Istanbul, Türkiye
| | - İsmail Kirşan
- Department of Obstetrics and Gynaecology, Faculty of Veterinary Medicine, Istanbul University-Cerrahpaşa, Avcılar, Istanbul, Türkiye
| | - Alev Meltem Ercan
- Department of Biophysics, Cerrahpaşa Faculty of Medicine, Istanbul University-Cerrahpaşa, Fatih, Istanbul, Türkiye
| | - Mehmet Erman Or
- Department of Internal Medicine, Faculty of Veterinary Medicine, Istanbul University-Cerrahpaşa, Avcılar, Istanbul, Türkiye
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Nishibori S, Kaneko MK, Nakagawa T, Nishigaki K, Kato Y, Igase M, Mizuno T. Development of anti-feline PD-1 antibody and its functional analysis. Sci Rep 2023; 13:6420. [PMID: 37095139 PMCID: PMC10126011 DOI: 10.1038/s41598-023-31543-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Accepted: 03/14/2023] [Indexed: 04/26/2023] Open
Abstract
Antibodies against immune checkpoint molecules restore T-cell function by inhibiting the binding of PD-1 and PD-L1 and have been shown to exert therapeutic effects in various human cancers. However, to date, no monoclonal antibody that recognizes feline PD-1 or PD-L1 has been reported, and there are many unknowns regarding the expression of immune checkpoint molecules and their potential as therapeutic targets in cats. Here we developed anti-feline PD-1 monoclonal antibody (1A1-2), and found that the monoclonal antibody against anti-canine PD-L1 (G11-6), which was previously developed in our laboratory, cross-reacted with feline PD-L1. Both antibodies inhibited the interaction of feline PD-1 and feline PD-L1 in vitro. These inhibitory monoclonal antibodies augmented the interferon-gamma (IFN-γ) production in activated feline peripheral blood lymphocytes (PBLs). Furthermore, for clinical application in cats, we generated a mouse-feline chimeric mAb by fusing the variable region of clone 1A1-2 with the constant region of feline IgG1 (ch-1A1-2). Ch-1A1-2 also augmented the IFN-γ production in activated feline PBLs. From this study, 1A1-2 is first anti-feline PD-1 monoclonal antibody with the ability to inhibit the interaction of feline PD-1 and PD-L1, and the chimeric antibody, ch-1A1-2 will be a beneficial therapeutic antibody for feline tumors.
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Affiliation(s)
- Shoma Nishibori
- Laboratory of Molecular Diagnostics and Therapeutics, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, 753-8515, Japan
| | - Mika K Kaneko
- Department of Molecular Pharmacology, Tohoku University Graduate School of Medicine, Sendai, 980-8575, Japan
| | - Takayuki Nakagawa
- Laboratory of Veterinary Surgery, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, 113-8657, Japan
| | - Kazuo Nishigaki
- Laboratory of Molecular Immunology and Infectious Disease, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, 753-8515, Japan
| | - Yukinari Kato
- Department of Molecular Pharmacology, Tohoku University Graduate School of Medicine, Sendai, 980-8575, Japan
| | - Masaya Igase
- Laboratory of Molecular Diagnostics and Therapeutics, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, 753-8515, Japan
| | - Takuya Mizuno
- Laboratory of Molecular Diagnostics and Therapeutics, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, 753-8515, Japan.
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