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Canine T cells

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https://www.readbyqxmd.com/read/28924718/comprehensive-annotation-and-evolutionary-insights-into-the-canine-canis-lupus-familiaris-antigen-receptor-loci
#1
Jolyon Martin, Hannes Ponstingl, Marie-Paule Lefranc, Joy Archer, David Sargan, Allan Bradley
Dogs are an excellent model for human disease. For example, the treatment of canine lymphoma has been predictive of the human response to that treatment. However, an incomplete picture of canine (Canis lupus familiaris) immunoglobulin (IG) and T cell receptor (TR)-or antigen receptor (AR)-gene loci has restricted their utility. This work advances the annotation of the canine AR loci and looks into breed-specific features of the loci. Bioinformatic analysis of unbiased RNA sequence data was used to complete the annotation of the canine AR genes...
September 19, 2017: Immunogenetics
https://www.readbyqxmd.com/read/28906588/surface-glycan-pattern-of-canine-equine-and-ovine-bone-marrow-derived-mesenchymal-stem-cells
#2
Salvatore Desantis, Gianluca Accogli, Antonio Crovace, Edda G Francioso, Alberto Maria Crovace
The use of bone marrow-derived mesenchymal stem cells (MSCs) for clinical and experimental studies is increasing, but full characterization of MSCs in veterinary species is hindered by the variability in species-specific cell surface marker expression and antibody cross reactivity. Recent studies demonstrated that the glycans in the glycocalyx of MSCs are promising candidates as cell biomarkers. In the present study, we analyzed the glycocalyx of canine MSCs (cMSCs), ovine MSCs (oMSCs), and equine MSCs (eMSCs) using a cell microarray procedure in which MSCs were spotted on microarray slides and incubated with a panel of 14 biotinylated lectins and Cy3-conjugated streptavidin...
September 14, 2017: Cytometry. Part A: the Journal of the International Society for Analytical Cytology
https://www.readbyqxmd.com/read/28905885/long-term-correction-of-hemophilia-a-mice-following-lentiviral-mediated-delivery-of-an-optimized-canine-factor-viii-gene
#3
J M Staber, M J Pollpeter, C-G Anderson, M Burrascano, A L Cooney, P L Sinn, D T Rutkowski, W C Raschke, P B McCray
Current therapies for hemophilia A include frequent prophylactic or on-demand intravenous factor treatments which are costly, inconvenient and may lead to inhibitor formation. Viral vector delivery of factor VIII (FVIII) cDNA has the potential to alleviate the debilitating clotting defects. Lentiviral-based vectors delivered to murine models of hemophilia A mediate phenotypic correction. However, a limitation of lentiviral-mediated FVIII delivery is inefficient transduction of target cells. Here, we engineer a feline immunodeficiency virus (FIV) -based lentiviral vector pseudotyped with the baculovirus GP64 envelope glycoprotein to mediate efficient gene transfer to mouse hepatocytes...
September 14, 2017: Gene Therapy
https://www.readbyqxmd.com/read/28895866/specific-immunotypes-of-canine-t-cell-lymphoma-are-associated-with-different-outcomes
#4
Nariman Deravi, Olaf Berke, J Paul Woods, Dorothee Bienzle
Canine lymphoma is a heterogeneous disease with many different subtypes. Lymphoma of T cell type in particular is variable in outcome, and includes subtypes with non-progressive, slowly- and rapidly-progressive disease course. Association of immunotype with disease course is incompletely defined. Here, results of flow cytometric immunotyping of 127 canine T cell lymphomas were analyzed in relation to survival and progression free interval. Samples originated from 101 multicentric, 8 mediastinal, 6 cutaneous, 5 hepatosplenic, 5 gastrointestinal and 2 other anatomic subtypes of T cell lymphoma...
September 2017: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/28891260/rabacfosadine-for-relapsed-canine-b-cell-lymphoma-efficacy-and-adverse-event-profiles-of-2-different-doses
#5
C F Saba, K R Vickery, C A Clifford, K E Burgess, B Phillips, D M Vail, Z M Wright, M A Morges, T M Fan, D H Thamm
Rabacfosadine (RAB), a novel double prodrug of the acyclic nucleotide phosphonate PMEG, preferentially targets neoplastic lymphocytes with reduced off target toxicity. Historical studies have suggested that every 21-day dosing is effective with acceptable toxicity. The purpose of this study was to evaluate RAB's safety and efficacy at 2 different doses every 21 days in dogs with relapsed B-cell lymphoma. Dogs that had failed 1 doxorubicin-based chemotherapy protocol were eligible for inclusion in this prospective trial...
September 11, 2017: Veterinary and Comparative Oncology
https://www.readbyqxmd.com/read/28871937/-pleurotus-ferulae-polysaccharide-adjuvant-enhances-the-immune-infertility-of-czp3dna-vaccine
#6
Junyuan Lin, Ying Wang, Jinyu Li, Fuchun Zhang
Objective To investigate the effect of Pleurotus ferulae polysaccharide (PFP) as an adjuvant on the infertility induced by canine zona pellucida 3 (CZP3) DNA vaccine (pcDNA3-CZP3). Methods Female mice were intramuscularly immunized with pcDNA3-CZP3 alone or co-immunized with pcDNA3-CZP3 and aluminum adjuvant or PFP for three times. CZP3-specific antibody titers of antiserum were determined by ELISA. The maturation of dendritic cells (DCs) and the proliferation of T lymphocytes were detected by flow cytometry...
August 2017: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/28871165/zoonotic-intestinal-helminths-interact-with-the-canine-immune-system-by-modulating-t-cell-responses-and-preventing-dendritic-cell-maturation
#7
Johannes Junginger, Katharina Raue, Karola Wolf, Elisabeth Janecek, Veronika M Stein, Andrea Tipold, Anne-Rose Günzel-Apel, Christina Strube, Marion Hewicker-Trautwein
Parasite co-evolution alongside the mammalian immune system gave rise to several modulatory strategies by which they prevent exaggerated pathology and facilitate a longer worm survival. As little is known about the immunoregulatory potential of the zoonotic canine parasites Ancylostoma caninum and Toxocara canis in the natural host, the present study aimed to investigate whether their larval excretory-secretory (ES) products can modulate the canine immune system. We demonstrated TcES to increase the frequency of CD4+ Foxp3(high) T cells, while both AcES and TcES were associated with elevated Helios expression in Foxp3(high) lymphocytes...
September 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28860956/diagnosis-of-lymphoid-malignancy-by-pcr-for-analysis-of-antigen-receptor-rearrangement-after-blood-transfusion-in-a-dog-with-acute-lymphocytic-leukemia
#8
Suhee Kim, Hyunwoo Kim, Soo-Hyeon Lee, Ilhan Cho, Seongwoo Kang, Junwoo Bae, Woosun Kim, Soomin Ahn, Jihye Choi, Sang-Ki Kim, Yoonjung Do, Jae Gyu Yoo, Jinho Park, DoHyeon Yu
Acute lymphocytic leukemia (ALL) is uncommon lymphoid malignancy in dogs, and its diagnosis is challenging. A 14-year-old spayed female mixed breed dog was transferred to a veterinary medical teaching hospital for an immediate blood transfusion. The dog showed lethargy, pale mucous membranes, and a weak femoral pulse. Complete blood count revealed non-regenerative anemia and severe leukopenia with thrombocytopenia. ALL was tentatively diagnosed based on the predominance of immature lymphoblasts on blood film examination...
August 2017: Immune Network
https://www.readbyqxmd.com/read/28857446/diagnostic-accuracy-of-pre-treatment-biopsy-for-grading-cutaneous-mast-cell-tumours-in-dogs
#9
T Shaw, S T Kudnig, S M Firestone
Mast cell tumours (MCTs) are common tumours of the canine skin, and are estimated to represent up to 20% of all skin tumours in dogs. Tumour grade has a major impact on the incidence of local recurrence and metastatic potential. In addition to helping the clinician with surgical planning, knowledge of the tumour grade also assists in proper prognostication and client education. For pre-treatment biopsies to be useful, there must exist a high level of correlation between the histopathological grade obtained from the pre-treatment biopsy and the actual histopathological grade from the excisional biopsy...
August 31, 2017: Veterinary and Comparative Oncology
https://www.readbyqxmd.com/read/28827658/a-canine-chimeric-monoclonal-antibody-targeting-pd-l1-and-its-clinical-efficacy-in-canine-oral-malignant-melanoma-or-undifferentiated-sarcoma
#10
Naoya Maekawa, Satoru Konnai, Satoshi Takagi, Yumiko Kagawa, Tomohiro Okagawa, Asami Nishimori, Ryoyo Ikebuchi, Yusuke Izumi, Tatsuya Deguchi, Chie Nakajima, Yukinari Kato, Keiichi Yamamoto, Hidetoshi Uemura, Yasuhiko Suzuki, Shiro Murata, Kazuhiko Ohashi
Immunotherapy targeting immune checkpoint molecules, programmed cell death 1 (PD-1) and PD-ligand 1 (PD-L1), using therapeutic antibodies has been widely used for some human malignancies in the last 5 years. A costimulatory receptor, PD-1, is expressed on T cells and suppresses effector functions when it binds to its ligand, PD-L1. Aberrant PD-L1 expression is reported in various human cancers and is considered an immune escape mechanism. Antibodies blocking the PD-1/PD-L1 axis induce antitumour responses in patients with malignant melanoma and other cancers...
August 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28752538/clinicopathologic-features-of-lingual-canine-t-zone-lymphoma
#11
L J Harris, E D Rout, K L Hughes, J D Labadie, B Boostrom, J A Yoshimoto, C M Cannon, P R Avery, E J Ehrhart, A C Avery
Canine T-zone lymphoma (TZL) is a subtype of T-cell lymphoma characterized by unique histologic pattern and cytomorphology, immunophenotypic loss of CD45 expression, and an indolent clinical behaviour. Dogs with TZL typically present with 1 or more enlarged lymph nodes and/or lymphocytosis. We describe a novel extranodal presentation of TZL involving the tongue. Twelve dogs with tongue masses were diagnosed with lingual TZL based on a variable combination of immunophenotyping via flow cytometry, cytology, histopathology, immunohistochemistry and/or PCR for antigen receptor rearrangement (PARR) assay...
July 27, 2017: Veterinary and Comparative Oncology
https://www.readbyqxmd.com/read/28747404/galectin-8-regulates-targeting-of-gp135-podocalyxin-and-lumen-formation-at-the-apical-surface-of-renal-epithelial-cells
#12
HooiCheng Lim, Chun-Ying Yu, Tzuu-Shuh Jou
Establishment of apical-basal polarity, through correct targeting of polarity determinants to distinct domains of the plasma membrane, is a fundamental process for the development of functioning epithelial tubules. Here we report that galectin (Gal)-8 regulates apical-basal polarity of Madin-Darby canine kidney (MDCK) cells via apical targeting of 135-kDa glycoprotein (Gp135). Gal-8 interacts with newly synthesized Gp135 in a glycan-dependent manner. Gal-8 knockdown induces aberrant lumens at the lateral domain and mistargeting of Gp135 to this structure, thus disrupting the kidney epithelial polarity of MDCK cells, which organize lumens at the apical surface...
July 26, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28746446/t-lymphocytes-and-macrophages-in-the-intestinal-tissues-of-dogs-infected-with-leishmania-infantum
#13
Diogo Tiago da Silva, Maria Luana Alves, Júlio Cesar Pereira Spada, Aline Cristine da Silva, Rita de Cássia Viveiros da Silveira, Trícia Maria Ferreira de Sousa Oliveira, Wilma Aparecida Starke-Buzetti
This study was about a semi-quantitative analysis of T lymphocytes (CD4+ and CD8+, FoxP3+ regulatory T cells), and macrophages in the gut wall of dogs naturally infected with Leishmania infantum. Thirteen dogs were divided into three groups: group 1 (G1, n=5), dogs with canine visceral leishmaniasis (CVL) and infected with L. infantum amastigotes in the intestine; group 2 (G2, n=5), dogs with CVL but without intestinal amastigotes; and group 3 (G3, n=3), uninfected dogs (control group). There was no significant difference (p ≥ 0...
April 2017: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/28735673/pneumonia-due-to-talaromyces-marneffei-in-a-dog-from-southern-brazil-with-concomitant-canine-distemper-virus-infection
#14
S A Headley, L G Pretto-Giordano, S C Lima, W G Suhett, A H T Pereira, L A Freitas, S A Suphoronski, T E S Oliveira, A F Alfieri, E C Pereira, L A Vilas-Boas, A A Alfieri
The pathological and molecular findings associated with Talaromyces marneffei-induced pneumonia with concomitant infection by canine distemper virus (CDV) are described in a dog. The principal pathological alteration occurred in the lungs. Histopathology confirmed multifocal granulomatous pneumonia associated with numerous intralesional and intracellular septate fission cells consistent with T. marneffei. A molecular assay designed to amplify a partial fragment of the 18S rRNA gene of T. marneffei provided positive results from two fungal cultures derived from the lung...
July 2017: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/28735665/prevalence-of-foxp3-cells-does-not-correlate-with-ki67-expression-in-canine-diffuse-large-b-cell-lymphoma
#15
C F Muir, S L Priestnall, A Hibbert, C Brown, O A Garden, T Scase
Diffuse large B-cell lymphoma (DLBCL) is the most common type of canine lymphoma and survival times are currently <1 year. Manipulation of the tumour microenvironment, of which the regulatory T cell (Treg) is a principal player, represents a potentially exciting way to curb the rapid proliferation of neoplastic cells. Tregs, characterized by the stable expression of the transcription factor FoxP3, suppress innate and adaptive arms of the immune response and represent a potential therapeutic target within neoplastic lymph nodes...
July 2017: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/28714087/clinical-and-pathological-classification-of-canine-intraocular-lymphoma
#16
Matthew R Lanza, Ayla R Musciano, Richard D Dubielzig, Amy C Durham
The objectives of this retrospective study of 100 dogs with intraocular lymphoma were to describe the histomorphologic and immunohistochemical features of canine intraocular lymphoma, determine the proportion of cases with presumed solitary ocular lymphoma (PSOL) compared to multicentric disease, and assess the clinical outcomes of these patients. Selected cases from Penn Vet Diagnostic Laboratory and Comparative Ocular Pathology Lab of Wisconsin (2004-2015) were evaluated and subtyped using the WHO classification system...
July 17, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28712929/exosomes-from-osteosarcoma-and-normal-osteoblast-differ-in-proteomic-cargo-and-immunomodulatory-effects-on-t-cells
#17
Ryan M Troyer, Carl E Ruby, Cheri P Goodall, Liping Yang, Claudia S Maier, Hassan A Albarqi, Jacqueline V Brady, Kallan Bathke, Oleh Taratula, Dan Mourich, Shay Bracha
BACKGROUND: Canine osteosarcoma (OSA) is the most common cancer of the appendicular skeleton and is associated with high metastatic rate to the lungs and poor prognosis. Recent studies have shown the impact of malignant-derived exosomes on immune cells and the facilitation of immune evasion. In the current study, we have characterized the proteomic profile of exosomes derived from healthy osteoblasts and osteosarcoma cell lines. We investigated the direct impact of these exosomes on healthy T cells...
July 14, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28677267/thirteen-novel-canine-dog-leukocyte-antigen-88-alleles-identified-by-sequence-based-typing
#18
G M Venkataraman, L J Kennedy, M-T E Little, S S Graves, M A Harkey, B J Torok-Storb, R Storb
Major histocompatibility complex (MHC) genes in mammals include highly polymorphic class I and class II genes that are critical for donor-recipient matching for transplantation. Dogs have served as an effective, directly translatable model for stem/progenitor cell transplantation. Previous analyses of MHC class I genes in dogs point to a single highly polymorphic gene, dog leukocyte antigen (DLA)-88, as an important factor in the success or failure of hematopoietic stem cell transplants. Fifty-nine DLA-88 alleles have been identified and reported so far...
September 2017: HLA
https://www.readbyqxmd.com/read/28676737/gene-therapy-in-a-large-animal-model-of-pde6a-retinitis-pigmentosa
#19
Freya M Mowat, Laurence M Occelli, Joshua T Bartoe, Kristen J Gervais, Ashlee R Bruewer, Janice Querubin, Astra Dinculescu, Sanford L Boye, William W Hauswirth, Simon M Petersen-Jones
Despite mutations in the rod phosphodiesterase 6-alpha (PDE6A) gene being well-recognized as a cause of human retinitis pigmentosa, no definitive treatments have been developed to treat this blinding disease. We performed a trial of retinal gene augmentation in the Pde6a mutant dog using Pde6a delivery by capsid-mutant adeno-associated virus serotype 8, previously shown to have a rapid onset of transgene expression in the canine retina. Subretinal injections were performed in 10 dogs at 29-44 days of age, and electroretinography and vision testing were performed to assess functional outcome...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28671070/effect-of-canine-mesenchymal-stromal-cells-loaded-with-paclitaxel-on-growth-of-canine-glioma-and-human-glioblastoma-cell-lines
#20
A Bonomi, E Ghezzi, L Pascucci, M Aralla, V Ceserani, L Pettinari, V Coccè, A Guercio, G Alessandri, E Parati, A T Brini, O Zeira, A Pessina
This study investigated whether canine mesenchymal stromal cells (cMSCs) are able to take up and release paclitaxel (PTX) in active form, and therefore whether they have potential as a tool for therapeutic delivery of this drug. cMSCs from bone marrow and adipose tissue were isolated, expanded and characterised phenotypically. cMSCs were loaded with PTX (cMSCs-PTX) and their capacity for release of PTX was determined by their effect on proliferation of cancer cells. cMSCs-PTX derived from bone marrow and adipose tissue were able to take up and then release active PTX...
May 2017: Veterinary Journal
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