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https://www.readbyqxmd.com/read/28335614/therapeutic-targeting-of-protein-kinase-ck2-gene-expression-in-feline-oral-squamous-cell-carcinoma-a-naturally-occurring-large-animal-model-of-head-and-neck-cancer
#1
Claire M Cannon, Janeen H Trembley, Betsy T Kren, Gretchen M Unger, M Gerard O'Sullivan, Ingrid Cornax, Jaime F Modiano, Khalil Ahmed
Protein kinase CK2 (CK2) is a highly promising target for cancer therapy, and anti-CK2 gene expression therapy has shown effectiveness in rodent models of human head and neck cancer (HNC). To date, there has been no large-animal model of cancer in which to further explore anti-CK2 therapies. Feline oral squamous cell carcinoma (FOSCC) has been proposed as a large-animal model for human HNC, and we have previously shown that CK2 is a rational target in FOSCC. Here we have tested the hypothesis that a novel tenfibgen-coated tumor-specific nanocapsule carrying RNA interference (RNAi) oligonucleotides targeting feline CK2α and CK2α' (TBG-RNAi-fCK2αα') would be safe in cats with FOSCC; assessment of target inhibition and tumor response were secondary aims...
March 23, 2017: Human Gene Therapy. Clinical Development
https://www.readbyqxmd.com/read/28319830/anti-proliferative-effect-of-metformin-on-a-feline-injection-site-sarcoma-cell-line-independent-of-mtor-inhibition
#2
J Pierro, C Saba, K McLean, R Williams, E Karpuzoglu, R Prater, K Hoover, R Gogal
Metformin is an oral hypoglycemic drug that has been shown to inhibit cancer cell proliferation via up-regulation of AMPK (AMP-activated protein kinase), and possibly inhibition of mTOR (mammalian target of rapamycin). The purpose of this study was to evaluate the effects of metformin on a feline injection site sarcoma cell line. Cells from a feline injection site sarcoma cell line were treated with metformin at varied concentrations. A dose-dependent decrease in cell viability following metformin treatment was observed, with an IC50 of 8...
March 6, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28163271/intestinal-gastrointestinal-stromal-tumor-in-a-cat
#3
Akihisa Suwa, Tetsuya Shimoda
A 12-year-old, 3.6-kg, spayed female domestic shorthaired cat had a 2-month history of anorexia and weight loss. Abdominal ultrasonography and computed tomography revealed an exophytic mass originating from the jejunum with very poor central and poor peripheral contrast enhancement. On day 14, surgical resection of the jejunum and mass with 5-cm margins and an end-to-end anastomosis were performed. Histopathological examination revealed the mass was a transmural, invasive cancer showing exophytic growth and originating from the small intestinal muscle layer...
March 23, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28131552/comparative-analysis-of-the-feline-immunoglobulin-repertoire
#4
COMPARATIVE STUDY
Sebastian C J Steiniger, Jacob Glanville, Douglas W Harris, Thomas L Wilson, Gregory C Ippolito, Steven A Dunham
Next-Generation Sequencing combined with bioinformatics is a powerful tool for analyzing the large number of DNA sequences present in the expressed antibody repertoire and these data sets can be used to advance a number of research areas including antibody discovery and engineering. The accurate measurement of the immune repertoire sequence composition, diversity and abundance is important for understanding the repertoire response in infections, vaccinations and cancer immunology and could also be useful for elucidating novel molecular targets...
March 2017: Biologicals: Journal of the International Association of Biological Standardization
https://www.readbyqxmd.com/read/28093106/genetic-and-epigenetic-aberrations-of-p16-in-feline-primary-neoplastic-diseases-and-tumor-cell-lines-of-lymphoid-and-non-lymphoid-origins
#5
H Mochizuki, A Fujiwara-Igarashi, M Sato, Y Goto-Koshino, K Ohno, H Tsujimoto
The p16 gene acts as a tumor suppressor by regulating the cell cycle and is frequently inactivated in human and canine cancers. The aim of this study was to characterize genetic and epigenetic alterations of the p16 in feline lymphoid and non-lymphoid malignancies, using 74 primary tumors and 11 tumor cell lines. Cloning of feline p16 and subsequent sequence analysis revealed 11 germline sequence polymorphisms in control cats. Bisulfite sequencing analysis of the p16 promoter region in a feline lymphoma cell line revealed that promoter methylation was associated with decreased mRNA expression...
January 2017: Veterinary Journal
https://www.readbyqxmd.com/read/28031367/barriers-to-infection-of-human-cells-by-feline-leukemia-virus-insights-into-resistance-to-zoonosis
#6
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 gammaretrovirus 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 neither domestic nor workplace exposure has been associated with detectable serological responses. Nonspecific inactivation of gammaretroviruses by serum factors appears insufficient to explain these observations. To investigate further, we explored the susceptibilities of primary and established human cell lines to FeLV-B, the most likely zoonotic variant...
March 1, 2017: 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
#7
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
#8
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
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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