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https://www.readbyqxmd.com/read/28031367/barriers-to-infection-of-human-cells-by-feline-leukemia-virus-insights-into-resistance-to-zoonosis
#1
Anne Terry, Anna Kilbey, Asif Naseer, Laura S Levy, Shamim Ahmad, Ciorsdaidh Watts, Nancy Mackay, Ewan Cameron, Sam Wilson, James C Neil
: The human genome displays a rich fossil record of past gamma-retrovirus infections, yet no current epidemic is evident, despite environmental exposure to viruses that infect human cells in vitro. Feline leukemia viruses (FeLVs) rank high on this list, but domestic or workplace exposure has not been associated with detectable serological responses. Non-specific inactivation of gamma-retroviruses by serum factors appears insufficient to explain these observations. To investigate further we explored the susceptibility of primary and established human cell lines to FeLV-B, the most likely zoonotic variant...
December 28, 2016: Journal of Virology
https://www.readbyqxmd.com/read/27975234/pharmacokinetics-and-derivation-of-an-anticancer-dosing-regimen-for-the-novel-anti-cancer-agent-isobutyl-deoxynyboquinone-ib-dnq-a-nqo1-bioactivatable-molecule-in-the-domestic-felid-species
#2
Alycen P Lundberg, Joshua M Francis, Malgorzata Pajak, Elizabeth I Parkinson, Kathryn L Wycislo, Thomas J Rosol, Megan E Brown, Cheryl A London, Levent Dirikolu, Paul J Hergenrother, Timothy M Fan
Isobutyl-deoxynyboquinone (IB-DNQ) is a selective substrate for NAD(P)H:quinone oxidoreductase (NQO1), an enzyme overexpressed in many solid tumors. Following activation by NQO1, IB-DNQ participates in a catalytic futile reduction/reoxidation cycle with consequent toxic reactive oxygen species generation within the tumor microenvironment. To elucidate the potential of IB-DNQ to serve as a novel anticancer agent, in vitro studies coupled with in vivo pharmacokinetic and toxicologic investigations in the domestic felid species were conducted to investigate the tractability of IB-DNQ as a translationally applicable anticancer agent...
December 14, 2016: Investigational New Drugs
https://www.readbyqxmd.com/read/27933665/detection-of-dna-sequences-from-a-novel-papillomavirus-in-a-feline-basal-cell-carcinoma
#3
John S Munday, Adrienne French, Neroli Thomson
BACKGROUND: Basal cell carcinomas (BCCs) are uncommon feline skin neoplasms of uncertain cause. CASE: A 14-year-old Abyssinian cat developed a soft dermal nodule on the dorsal thorax. This mass grew slowly over a six month period before being surgically excised. METHODS AND RESULTS: Histology revealed a BCC. Additionally, changes suggestive of an early Bowenoid in situ carcinoma (BISC) were present in the overlying epidermis. Both the BCC and the BISC contained papillomavirus-induced cell changes and prominent basophilic intracytoplasmic bodies...
December 8, 2016: Veterinary Dermatology
https://www.readbyqxmd.com/read/27865960/identification-of-inonotus-obliquus-polysaccharide-with-broad-spectrum-antiviral-activity-against-multi-feline-viruses
#4
Jin Tian, Xiaoliang Hu, Dafei Liu, Hongxia Wu, Liandong Qu
Inonotus obliquus polysaccharides (IOPs) are a potential drug for the prevention and treatment of cancer, cardiopathy, diabetes, AIDs, pancreatitis and other diseases. In this study, we found that IOP can act as a broad-spectrum antiviral drug against feline viruses in the in vitro experiment. Using cell models of feline calicivirus (FCV), we demonstrated that IOP treatment was capable of exhibiting anti-FCV strain F9 activity in cell-based assays and also showed low cytotoxicity. Investigation of the mechanism of action of the compound revealed that IOP treatment induces its inhibitory actions directly on virus particles through blocking viral binding/absorpting...
February 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/27802813/retraction-note-comparative-value-of-clinical-cytological-and-histopathological-features-in-feline-mammary-gland-tumors-an-experimental-model-for-the-study-of-human-breast-cancer
#5
Radmehr Shafiee, Javad Javanbakht, Nahid Atyabi, Alimohammad Bahrami, Danial Kheradmand, Reyhaneh Safaei, Farshid Khadivar, Ehsan Hosseini
No abstract text is available yet for this article.
November 2, 2016: Diagnostic Pathology
https://www.readbyqxmd.com/read/27736957/high-potency-vegfrs-met-fms-triple-blockade-by-tas-115-concomitantly-suppresses-tumor-progression-and-bone-destruction-in-tumor-induced-bone-disease-model-with-lung-carcinoma-cells
#6
Hidenori Fujita, Akira Gomori, Yayoi Fujioka, Yuki Kataoka, Kenji Tanaka, Akihiro Hashimoto, Takamasa Suzuki, Kenjiro Ito, Tomonori Haruma, Hiromi Yamamoto-Yokoi, Naomoto Harada, Motomu Sakuragi, Nobuyuki Oda, Kenichi Matsuo, Masaki Inada, Kazuhiko Yonekura
Approximately 25-40% of patients with lung cancer show bone metastasis. Bone modifying agents reduce skeletal-related events (SREs), but they do not significantly improve overall survival. Therefore, novel therapeutic approaches are urgently required. In this study, we investigated the anti-tumor effect of TAS-115, a VEGFRs and HGF receptor (MET)-targeted kinase inhibitor, in a tumor-induced bone disease model. A549-Luc-BM1 cells, an osteo-tropic clone of luciferase-transfected A549 human lung adenocarcinoma cells (A549-Luc), produced aggressive bone destruction associated with tumor progression after intra-tibial (IT) implantation into mice...
2016: PloS One
https://www.readbyqxmd.com/read/27703351/treatment-of-natural-mammary-gland-tumors-in-canines-and-felines-using-gold-nanorods-assisted-plasmonic-photothermal-therapy-to-induce-tumor-apoptosis
#7
Moustafa R K Ali, Ibrahim M Ibrahim, Hala R Ali, Salah A Selim, Mostafa A El-Sayed
Plasmonic photothermal therapy (PPTT) is a cancer therapy in which gold nanorods are injected at the site of a tumor before near-infrared light is transiently applied to the tumor causing localized cell death. Previously, PPTT studies have been carried out on xenograft mice models. Herein, we report a study showing the feasibility of PPTT as applied to natural tumors in the mammary glands of dogs and cats, which more realistically represent their human equivalents at the molecular level. We optimized a regime of three low PPTT doses at 2-week intervals that ablated tumors mainly via apoptosis in 13 natural mammary gland tumors from seven animals...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/27698817/stem-cell-growth-factor-receptor-in-canine-vs-feline-osteosarcomas
#8
Birgitt Wolfesberger, Andrea Fuchs-Baumgartinger, Juraj Hlavaty, Florian R Meyer, Martin Hofer, Ralf Steinborn, Christiane Gebhard, Ingrid Walter
Osteosarcoma is considered the most common bone cancer in cats and dogs, with cats having a much better prognosis than dogs, since the great majority of dogs with osteosarcoma develop distant metastases. In search of a factor possibly contributing to this disparity, the stem cell growth factor receptor KIT was targeted, and the messenger (m)RNA and protein expression levels of KIT were compared in canine vs. feline osteosarcomas, as well as in normal bone. The mRNA expression of KIT was quantified by reverse transcription-quantitative polymerase chain reaction, and was observed to be significantly higher in canine (n=14) than in feline (n=5) osteosarcoma samples (P<0...
October 2016: Oncology Letters
https://www.readbyqxmd.com/read/27649518/inhibition-of-the-pi3k-akt-pathway-sensitizes-oral-squamous-cell-carcinoma-cells-to-anthracycline-based-chemotherapy-in-vitro
#9
Dmitriy Smolensky, Kusum Rathore, Jennifer Bourn, Maria Cekanova
Anthracycline-based chemotherapy, such as doxorubicin (Dox), while effective against many solid tumors, is not widely used for head and neck cancers. In this study, we evaluated the efficacy of Dox, and its derivative AD198 in human, canine, and feline oral squamous cell carcinomas cells (OSCC) in vitro. Dox and AD198 had significant an anti-proliferative effect on human, canine, and feline OSCC cells in dose-dependent manner. AD198 inhibited cell proliferation more effectively than Dox in tested OSCC cells...
September 20, 2016: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/27559731/quantitative-expression-and-co-localization-of-wnt-signalling-related-proteins-in-feline-squamous-cell-carcinoma
#10
Antonio Giuliano, Rebecca Swift, Callum Arthurs, Georgina Marote, Francesca Abramo, Jenny McKay, Calum Thomson, Mariana Beltran, Michael Millar, Simon Priestnall, Jane Dobson, Fernando Costantino-Casas, Terry Petrou, Imelda M McGonnell, Anthony J Davies, Malcolm Weetman, Oliver A Garden, John R Masters, Christopher Thrasivoulou, Aamir Ahmed
Feline oral squamous cell carcinoma (FOSCC) is an aggressive neoplasm in cats. Little is known about the possible molecular mechanisms that may be involved in the initiation, maintenance and progression of FOSCC. Wnt signalling is critical in development and disease, including many mammalian cancers. In this study, we have investigated the expression of Wnt signalling related proteins using quantitative immunohistochemical techniques on tissue arrays. We constructed tissue arrays with 58 individual replicate tissue samples...
2016: PloS One
https://www.readbyqxmd.com/read/27406444/profiling-of-host-cell-response-to-successive-canine-parvovirus-infection-based-on-kinetic-proteomic-change-identification
#11
Hang Zhao, Yuening Cheng, Jianke Wang, Peng Lin, Li Yi, Yaru Sun, Jingqiang Ren, Mingwei Tong, Zhigang Cao, Jiawei Li, Jinliang Deng, Shipeng Cheng
Canine parvovirus (CPV) reproduces by co-opting the resources of host cells, inevitably causing cytotoxic effects to the host cells. Feline kidney F81 cells are sensitive to CPV infection and show disparate growing statuses at different time points post-infection. This study analysed the response of F81 cells to CPV infection at successive infection time points by iTRAQ-based quantitative proteomics. Differentially expressed proteins (DEPs) during 60 h of infection and at selected time points post-infection were identified by an analysis of variance test and a two-tailed unpaired t test, respectively...
2016: Scientific Reports
https://www.readbyqxmd.com/read/27401557/hgf-independent-regulation-of-met-and-gab1-by-nonreceptor-tyrosine-kinase-fer-potentiates-metastasis-in-ovarian-cancer
#12
Gaofeng Fan, Siwei Zhang, Yan Gao, Peter A Greer, Nicholas K Tonks
Ovarian cancer cells disseminate readily within the peritoneal cavity, which promotes metastasis, and are often resistant to chemotherapy. Ovarian cancer patients tend to present with advanced disease, which also limits treatment options; consequently, new therapies are required. The oncoprotein tyrosine kinase MET, which is the receptor for hepatocyte growth factor (HGF), has been implicated in ovarian tumorigenesis and has been the subject of extensive drug development efforts. Here, we report a novel ligand- and autophosphorylation-independent activation of MET through the nonreceptor tyrosine kinase feline sarcoma-related (FER)...
July 1, 2016: Genes & Development
https://www.readbyqxmd.com/read/27353749/properties-of-the-feline-tumour-suppressor-reduced-expression-in-immortalized-cells-reic-dkk-3
#13
K Ochiai, H Oda, S Shono, Y Kato, S Sugihara, S Nakazawa, D Azakami, M Michishita, E Onozawa, M Bonkobara, T Sako, L Shun-Ai, H Ueki, M Watanabe, T Omi
Reduced expression in immortalized cells (REIC/Dkk-3), a member of the human Dickkopf (Dkk) family, is a growth suppressor in human and canine mammary tumours. Mammary gland tumours are common neoplasms with high malignancy in female cats. The purpose of this study was to clone the feline REIC/Dkk-3 homolog, investigate its expression in cell lines established from feline mammary gland tumours, and test its tumour suppressor function. Western blot analysis revealed that expression of the REIC/Dkk-3 protein was reduced in feline mammary carcinoma cell lines...
June 29, 2016: Veterinary and Comparative Oncology
https://www.readbyqxmd.com/read/27290644/kras-mutations-in-canine-and-feline-pancreatic-acinar-cell-carcinoma
#14
C Crozier, G A Wood, R A Foster, S Stasi, J H W Liu, J M S Bartlett, B L Coomber, V S Sabine
Companion animals may serve as valuable models for studying human cancers. Although KRAS is the most commonly mutated gene in human ductal pancreatic cancers (57%), with mutations frequently occurring at codons 12, 13 and 61, human pancreatic acinar cell carcinomas (ACCs) lack activating KRAS mutations. In the present study, 32 pancreatic ACC samples obtained from 14 dogs and 18 cats, including seven metastases, were analyzed for six common activating KRAS mutations located in codons 12 (n = 5) and 13 (n = 1) using Sequenom MassARRAY...
July 2016: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/27281014/feline-mammary-cancer
#15
B B Hassan, S M Elshafae, W Supsavhad, J K Simmons, W P Dirksen, S M Sokkar, T J Rosol
Feline mammary carcinoma (FMC) is similar to human breast cancer in the late age of onset, incidence, histopathologic features, biological behavior, and pattern of metastasis. Therefore, FMC has been proposed as a relevant model for aggressive human breast cancer. The goals of this study were to develop a nude mouse model of FMC tumor growth and metastasis and to measure the expression of genes responsible for lymphangiogenesis, angiogenesis, tumor progression, and lymph node metastasis in FMC tissues and cell lines...
January 2017: Veterinary Pathology
https://www.readbyqxmd.com/read/27259020/2016-aaha-oncology-guidelines-for-dogs-and-cats
#16
Barb Biller, John Berg, Laura Garrett, David Ruslander, Richard Wearing, Bonnie Abbott, Mithun Patel, Diana Smith, Christine Bryan
All companion animal practices will be presented with oncology cases on a regular basis, making diagnosis and treatment of cancer an essential part of comprehensive primary care. Because each oncology case is medically unique, these guidelines recommend a patient-specific approach consisting of the following components: diagnosis, staging, therapeutic intervention, provisions for patient and personnel safety in handling chemotherapy agents, referral to an oncology specialty practice when appropriate, and a strong emphasis on client support...
July 2016: Journal of the American Animal Hospital Association
https://www.readbyqxmd.com/read/27236354/cytotoxic-effects-induced-by-interferon-%C3%AF-gene-lipofection-through-ros-generation-and-mitochondrial-membrane-potential-disruption-in-feline-mammary-carcinoma-cells
#17
Marcela Solange Villaverde, Alexandra Marisa Targovnik, María Victoria Miranda, Liliana María Elena Finocchiaro, Gerardo Claudio Glikin
Progress in comparative oncology promises advances in clinical cancer treatments for both companion animals and humans. In this context, feline mammary carcinoma (FMC) cells have been proposed as a suitable model to study human breast cancer. Based on our previous data about the advantages of using type I interferon gene therapy over the respective recombinant DNA derived protein, the present work explored the effects of feline interferon-ω gene (fIFNω) transfer on FMC cells. Three different cell variants derived from a single spontaneous highly aggressive FMC tumor were successfully established and characterized...
August 2016: Cytokine
https://www.readbyqxmd.com/read/27229930/dual-targeting-of-egfr-and-erbb2-pathways-produces-a-synergistic-effect-on-cancer-cell-proliferation-and-migration-in-vitro
#18
M E Gray, S Lee, A L McDowell, M Erskine, Q T M Loh, O Grice, D J Argyle, G T Bergkvist
Members of the epidermal growth factor receptor (EGFR/ERBB) gene family are frequently dysregulated in a range of human cancers, and therapeutics targeting these proteins are in clinical use. We hypothesized that similar pathways are involved in feline and canine tumours and that the same drugs may be of clinical use in veterinary patients. We investigated EGFR and ERBB2 targeting using a panel of feline and canine cell lines. EGFR and ERBB2 were targeted with siRNAs or tyrosine kinase inhibitors (TKIs) and their effect on cellular proliferation, colony formation and migration was investigated in vitro...
May 27, 2016: Veterinary and Comparative Oncology
https://www.readbyqxmd.com/read/27212699/molecular-based-subtyping-of-feline-mammary-carcinomas-and-clinicopathological-characterization
#19
Maria Soares, Sara Madeira, Jorge Correia, Maria Peleteiro, Fátima Cardoso, Fernando Ferreira
Molecular classification of feline mammary carcinomas (FMC) from which specific behavioral patterns may be estimated has potential applications in veterinary clinical practice and in comparative oncology. In this perspective, the main goal of this study was to characterize both the clinical and the pathological features of the different molecular phenotypes found in a population of FMC (n = 102), using the broadly accepted IHC-based classification established by St. Gallen International Expert Consensus panel...
June 2016: Breast: Official Journal of the European Society of Mastology
https://www.readbyqxmd.com/read/27188773/bowenoid-in%C3%A2-situ-carcinomas-in-two-devon-rex-cats-evidence-of-unusually-aggressive-neoplasm-behaviour-in-this-breed-and-detection-of-papillomaviral-gene-expression-in-primary-and-metastatic-lesions
#20
John S Munday, Mike W Benfell, Adrienne French, Geoff M B Orbell, Neroli Thomson
BACKGROUND: Bowenoid in situ carcinomas (BISCs) are rare feline tumours that are thought to be caused by papillomavirus infection. Although they usually develop in old cats and are slowly progressive, multiple aggressive BISCs have been reported previously in a comparatively young Devon Rex cat. ANIMALS: A 5-year-old (Case 1) and an 8-year-old (Case 2) Devon Rex cat developed numerous BISCs. Rapid progression resulted in euthanasia of both cats after 8 months...
June 2016: Veterinary Dermatology
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