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Mortlock SA, Asada MC, Soh PXY, Hsu WT, Lee C, Bennett PF, Taylor RM, Khatkar MS, Williamson P. Genomic Analysis of Lymphoma Risk in Bullmastiff Dogs. Vet Sci 2023; 10:703. [PMID: 38133254 PMCID: PMC10747964 DOI: 10.3390/vetsci10120703] [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: 11/20/2023] [Revised: 12/05/2023] [Accepted: 12/06/2023] [Indexed: 12/23/2023] Open
Abstract
Lymphoma is the most common haematological malignancy affecting dogs and has a high incidence in the Bullmastiff breed. The aim of this study was to identify risk loci predisposing this breed to the disease. The average age of lymphoma diagnosis in 55 cases was less than 6 years, similar to the median age of 64 cases from our clinical and pathology databases. When fine-scale population structure was explored using NETVIEW, cases were distributed throughout an extended pedigree. When genotyped cases (n = 49) and dogs from the control group (n = 281) were compared in a genome-wide association analysis of lymphoma risk, the most prominent associated regions were detected on CFA13 and CFA33. The top SNPs in a 5.4 Mb region on CFA13 were significant at a chromosome-wide level, and the region was fine-mapped to ~1.2 Mb (CFA13: 25.2-26.4 Mb; CanFam3.1) with four potential functional candidates, including the MYC proto-oncogene bHLH transcription factor (MYC) and a region syntenic with the human and mouse lncRNA Pvt1 oncogene (PVT1). A 380 Kb associated region at CFA33: 7.7-8.1 Mb contained the coding sequence for SUMO specific peptidase7 (SENP7) and NFK inhibitor zeta (NFKBIZ) genes. These genes have annotations related to cancer, amongst others, and both have functional links to MYC regulation. Genomic signatures identified in lymphoma cases suggest that increased risk contributed by the regions identified by GWAS may complement a complex predisposing genetic background.
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Affiliation(s)
- Sally A. Mortlock
- Sydney School of Veterinary Science, Faculty of Science, The University of Sydney, Camperdown, NSW 2006, Australia (M.S.K.)
| | - Monica C. Asada
- Sydney School of Veterinary Science, Faculty of Science, The University of Sydney, Camperdown, NSW 2006, Australia (M.S.K.)
| | - Pamela Xing Yi Soh
- School of Life and Environmental Sciences, Faculty of Science, The University of Sydney, Camperdown, NSW 2006, Australia
- School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Camperdown, NSW 2006, Australia
| | - Wei-Tse Hsu
- Sydney School of Veterinary Science, Faculty of Science, The University of Sydney, Camperdown, NSW 2006, Australia (M.S.K.)
| | - Carol Lee
- Sydney School of Veterinary Science, Faculty of Science, The University of Sydney, Camperdown, NSW 2006, Australia (M.S.K.)
| | - Peter F. Bennett
- Sydney School of Veterinary Science, Faculty of Science, The University of Sydney, Camperdown, NSW 2006, Australia (M.S.K.)
| | - Rosanne M. Taylor
- Sydney School of Veterinary Science, Faculty of Science, The University of Sydney, Camperdown, NSW 2006, Australia (M.S.K.)
| | - Mehar S. Khatkar
- Sydney School of Veterinary Science, Faculty of Science, The University of Sydney, Camperdown, NSW 2006, Australia (M.S.K.)
- School of Animal and Veterinary Sciences, The University of Adelaide, Roseworthy, SA 5371, Australia
| | - Peter Williamson
- Sydney School of Veterinary Science, Faculty of Science, The University of Sydney, Camperdown, NSW 2006, Australia (M.S.K.)
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Zhang C, Ni C, Lu H. Polo-Like Kinase 2: From Principle to Practice. Front Oncol 2022; 12:956225. [PMID: 35898867 PMCID: PMC9309260 DOI: 10.3389/fonc.2022.956225] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 06/14/2022] [Indexed: 11/21/2022] Open
Abstract
Polo-like kinase (PLK) 2 is an evolutionarily conserved serine/threonine kinase that shares the n-terminal kinase catalytic domain and the C-terminal Polo Box Domain (PBD) with other members of the PLKs family. In the last two decades, mounting studies have focused on this and tried to clarify its role in many aspects. PLK2 is essential for mitotic centriole replication and meiotic chromatin pairing, synapsis, and crossing-over in the cell cycle; Loss of PLK2 function results in cell cycle disorders and developmental retardation. PLK2 is also involved in regulating cell differentiation and maintaining neural homeostasis. In the process of various stimuli-induced stress, including oxidative and endoplasmic reticulum, PLK2 may promote survival or apoptosis depending on the intensity of stimulation and the degree of cell damage. However, the role of PLK2 in immunity to viral infection has been studied far less than that of other family members. Because PLK2 is extensively and deeply involved in normal physiological functions and pathophysiological mechanisms of cells, its role in diseases is increasingly being paid attention to. The effect of PLK2 in inhibiting hematological tumors and fibrotic diseases, as well as participating in neurodegenerative diseases, has been gradually recognized. However, the research results in solid organ tumors show contradictory results. In addition, preliminary studies using PLK2 as a disease predictor and therapeutic target have yielded some exciting and promising results. More research will help people better understand PLK2 from principle to practice.
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Affiliation(s)
- Chuanyong Zhang
- Hepatobiliary Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
- Key Laboratory of Liver Transplantation, Chinese Academy of Medical Sciences, Nanjing, China
| | - Chuangye Ni
- Hepatobiliary Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
- Key Laboratory of Liver Transplantation, Chinese Academy of Medical Sciences, Nanjing, China
| | - Hao Lu
- Hepatobiliary Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
- Key Laboratory of Liver Transplantation, Chinese Academy of Medical Sciences, Nanjing, China
- *Correspondence: Hao Lu,
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Waldrip ZJ, Burdine L, Harrison DK, Azevedo-Pouly AC, Storey AJ, Moffett OG, Mackintosh SG, Burdine MS. DNA-PKcs kinase activity stabilizes the transcription factor Egr1 in activated immune cells. J Biol Chem 2021; 297:101209. [PMID: 34562454 PMCID: PMC8551498 DOI: 10.1016/j.jbc.2021.101209] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 09/14/2021] [Accepted: 09/16/2021] [Indexed: 11/25/2022] Open
Abstract
DNA-dependent protein kinase catalytic subunit (DNA-PKcs) is known primarily for its function in DNA double-stranded break repair and nonhomologous end joining (NHEJ). However, DNA-PKcs also has a critical yet undefined role in immunity impacting both myeloid and lymphoid cell lineages spurring interest in targeting DNA-PKcs for therapeutic strategies in immune-related diseases. To gain insight into the function of DNA-PKcs within immune cells, we performed a quantitative phosphoproteomic screen in T cells to identify phosphorylation targets of DNA-PKcs. Our results indicate that DNA-PKcs phosphorylates the transcription factor Egr1 (early growth response protein 1) at serine 301. Expression of Egr1 is induced early upon T cell activation and dictates T cell response by modulating expression of cytokines and key costimulatory molecules such as IL (interleukin) 2, IL6, IFNγ, and NFκB. Inhibition of DNA-PKcs by treatment with a DNA-PKcs specific inhibitor NU7441 or shRNA knockdown increased proteasomal degradation of Egr1. Mutation of serine 301 to alanine via CRISPR-Cas9 reduced EGR1 protein expression and decreased Egr1-dependent transcription of IL2 in activated T cells. Our findings identify DNA-PKcs as a critical intermediary link between T cell activation and T cell fate and a novel phosphosite involved in regulating Egr1 activity.
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Affiliation(s)
- Zachary J Waldrip
- Division of Surgical Research, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA; Center for Translational Pediatric Research, Arkansas Children's Research Institute, Little Rock, Arkansas, USA
| | - Lyle Burdine
- Division of Surgical Research, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA; Department of Transplant Surgery, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - David K Harrison
- Division of Surgical Research, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA; Center for Translational Pediatric Research, Arkansas Children's Research Institute, Little Rock, Arkansas, USA
| | - Ana Clara Azevedo-Pouly
- Division of Surgical Research, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA; Center for Translational Pediatric Research, Arkansas Children's Research Institute, Little Rock, Arkansas, USA
| | - Aaron J Storey
- Department of Biochemistry and Molecular Biology, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - Olivia G Moffett
- College of Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - Samuel G Mackintosh
- Department of Biochemistry and Molecular Biology, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - Marie Schluterman Burdine
- Division of Surgical Research, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA; Center for Translational Pediatric Research, Arkansas Children's Research Institute, Little Rock, Arkansas, USA.
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Szopa IM, Granica M, Bujak JK, Łabędź A, Błaszczyk M, Paulos CM, Majchrzak-Kuligowska K. Effective Activation and Expansion of Canine Lymphocytes Using a Novel Nano-Sized Magnetic Beads Approach. Front Immunol 2021; 12:604066. [PMID: 33679741 PMCID: PMC7933476 DOI: 10.3389/fimmu.2021.604066] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Accepted: 01/04/2021] [Indexed: 12/18/2022] Open
Abstract
Expansion protocols for human T lymphocytes using magnetic beads, which serve as artificial antigen presenting cells (aAPCs), is well-studied. Yet, the efficacy of magnetic beads for propagation and functionality of peripheral blood lymphocytes (PBLs) isolated from companion dogs still remains limited. Domestic dog models are important in immuno-oncology field. Thus, we built the platform for induction of canine PBLs function, proliferation and biological activity using nano-sized magnetic beads (termed as MicroBeads) coated with anti-canine CD3 and CD28 antibodies. Herein we reveal that activation of canine PBLs via MicroBeads induces a range of genes involved in immediate-early response to T cell activation in dogs. Furthermore, canine T lymphocytes are effectively activated by MicroBeads, as measured by cluster formation and induction of activation marker CD25 on canine T cells as quickly as 24 h post stimulation. Similar to human T cells, canine PBLs require lower activation signal strength for efficient proliferation and expansion, as revealed by titration studies using a range of MicroBeads in the culture. Additionally, the impact of temperature was assessed in multiple stimulation settings, showing that both 37°C and 38.5°C are optimal for the expansion of canine T cells. In contrast to stimulation using plant mitogen Concanavalin A (ConA), MicroBead-based activation did not increase activation-induced cell death. In turn, MicroBeads supported the propagation of T cells with an effector memory phenotype that secreted substantial IL-2 and IFN-γ. Thus, MicroBeads represent an accessible and affordable tool for conducting immunological studies on domestic dog models. Similarities in inducing intracellular signaling pathways further underscore the importance of this model in comparative medicine. Presented herein MicroBead-based expansion platforms for canine PBLs may benefit adoptive immunotherapy in dogs and facilitate the design of next-generation clinical trials in humans.
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Affiliation(s)
- Iwona Monika Szopa
- Department of Physiological Sciences, Institute of Veterinary Medicine, Warsaw University of Life Sciences, Warsaw, Poland
| | - Monika Granica
- Department of Physiological Sciences, Institute of Veterinary Medicine, Warsaw University of Life Sciences, Warsaw, Poland
| | - Joanna Katarzyna Bujak
- Department of Physiological Sciences, Institute of Veterinary Medicine, Warsaw University of Life Sciences, Warsaw, Poland
- Department of Physics and Biophysics, Institute of Biology, Warsaw University of Life Sciences, Warsaw, Poland
| | - Agata Łabędź
- Department of Physiological Sciences, Institute of Veterinary Medicine, Warsaw University of Life Sciences, Warsaw, Poland
| | - Maciej Błaszczyk
- Department of Physiological Sciences, Institute of Veterinary Medicine, Warsaw University of Life Sciences, Warsaw, Poland
| | - Chrystal Mary Paulos
- Department of Surgery, Department of Microbiology and Immunology, Emory University School of Medicine, Atlanta, GA, United States
| | - Kinga Majchrzak-Kuligowska
- Department of Physiological Sciences, Institute of Veterinary Medicine, Warsaw University of Life Sciences, Warsaw, Poland
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Marimuthu S, Selvam R, Kaninathan A, D'Souza P. Effect of dietary supplementation of phytogenic feed additive on performance traits, serum neopterin, and cutaneous basophil hypersensitivity response in heat-induced stress model of broiler chickens. J Adv Vet Anim Res 2020; 7:141-147. [PMID: 32219120 PMCID: PMC7096127 DOI: 10.5455/javar.2020.g403] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Revised: 12/14/2019] [Accepted: 12/16/2019] [Indexed: 11/03/2022] Open
Abstract
Objective The trial was aimed at assessing the effect of phytogenic feed additive (PFA), a natural adaptogen, on growth performance, serum neopterin level, and cutaneous basophil hypersensitivity (CBH) response in heat-induced stress model of broilers. Materials and Methods One-day-old Ross 308 chicks (N = 360) were randomly distributed among normal control (NOR), heat-stress control (HSC), and PFA treatment (HSC plus PFA at 200 gm/ton of feed) group. HSC and PFA groups were subjected to heat stress (HS) (32°C-36°C) from 9:00 a.m. to 5:00 p.m. for 35 days. The impact of HS on growth performance, serum neopterin level, and CBH response was assessed. Results High ambient temperature worsened the performance traits [bodyweight (p < 0.05) and feed conversion ratio] and significantly lowered the serum neopterin level and CBH response in the HSC group when compared to the NOR group. However, supplementation of PFA at 200 gm/ton of feed to birds mitigated the detrimental effects of HS. Conclusion PFA at 200 gm/ton demonstrated the immunomodulatory effect through the restoration of serum neopterin level, CBH response, and growth performance traits in heat-stressed broiler chickens. Thus, PFA can be used as a natural adaptogen to increase the stress resistance and mitigate the negative consequences of various stressors in broiler chickens.
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Affiliation(s)
- Saravanakumar Marimuthu
- Animal Health Science Department, Natural Remedies Pvt. Ltd., # 5B, Veera Sandra Industrial Area, Electronic City Phase-II, Bengaluru 560100, India
| | - Ramasamy Selvam
- Techno commercial Marketing, Natural Remedies Pvt. Ltd., # 5B, Veera Sandra Industrial Area, Electronic City Phase-II, Bengaluru 560100, India
| | - Arigesavan Kaninathan
- Animal Health Science Department, Natural Remedies Pvt. Ltd., # 5B, Veera Sandra Industrial Area, Electronic City Phase-II, Bengaluru 560100, India
| | - Prashanth D'Souza
- Animal Health Science Department, Natural Remedies Pvt. Ltd., # 5B, Veera Sandra Industrial Area, Electronic City Phase-II, Bengaluru 560100, India
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Huang SS, He SL, Zhang YM. The effects of telmisartan on the nuclear factor of activated T lymphocytes signalling pathway in hypertensive patients. J Renin Angiotensin Aldosterone Syst 2016; 17:1470320316655005. [PMID: 27317303 PMCID: PMC5843869 DOI: 10.1177/1470320316655005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Accepted: 05/13/2016] [Indexed: 01/11/2023] Open
Abstract
HYPOTHESIS Previous studies provide links between the nuclear factor of activated T lymphocytes (NFAT) signalling pathway and the development of hypertension. Our preliminary studies indicate that telmisartan can block Kv1.3 potassium channels and effectively inhibit potassium current densities, along with Kv1.3 mRNA and protein expression levels. This paper aims to investigate whether telmisartan has an inhibitory effect on the NFAT signalling pathway after activation and proliferation of peripheral blood T lymphocytes in Kazakh patients with essential hypertension (EH) from Xinjiang, China. MATERIALS AND METHODS T lymphocytes were isolated using the immunomagnetic cell sorting method (MACS). The mRNA expression of NFATc1, IL-6 and TNF-α was measured by quantitative polymerase chain reaction (qRT-PCR) and relative protein levels were evaluated by Western blot. T cell samples from 50 hypertensive Kazakh patients from Xinjiang were randomly divided into control, telmisartan, cyclosporin A (CsA), VIVIT, and 4-aminopytidine (4-AP) groups. Peripheral blood T lymphocytes were first activated and proliferated in vitro, then incubated for 48 h under different treatment conditions before determination of protein and mRNA expression of NFATc1, IL-6, and TNF-α by Western blot and qRT-PCR analyses, respectively. RESULTS There were no significant differences in cardiovascular risk factors among the patients with samples assigned to the five groups (p > 0.05). Expression of NFATc1, IL-6, and TNF-α mRNA and protein was significantly reduced in T lymphocytes in all treatment groups (telmisartan, CsA, VIVIT, and 4-AP) compared with controls. CONCLUSIONS Antihypertensive function and inhibitory effects of telmisartan on the T lymphocyte NFAT signalling pathway are unlikely to affect the normal immune function of hypertensive patients. Telmisartan may exert anti-inflammatory effects by inhibition of the NFAT signalling pathway in the T lymphocytes of hypertensive patients.
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Affiliation(s)
- Sha-Sha Huang
- Heart Center, First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
| | - Si-Li He
- Heart Center, First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
| | - Yuan-Ming Zhang
- Heart Center, First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
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Mortlock SA, Booth R, Mazrier H, Khatkar MS, Williamson P. Visualization of Genome Diversity in German Shepherd Dogs. Bioinform Biol Insights 2016; 9:37-42. [PMID: 26884680 PMCID: PMC4750897 DOI: 10.4137/bbi.s30524] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Revised: 12/06/2015] [Accepted: 12/11/2015] [Indexed: 12/16/2022] Open
Abstract
A loss of genetic diversity may lead to increased disease risks in subpopulations of dogs. The canine breed structure has contributed to relatively small effective population size in many breeds and can limit the options for selective breeding strategies to maintain diversity. With the completion of the canine genome sequencing project, and the subsequent reduction in the cost of genotyping on a genomic scale, evaluating diversity in dogs has become much more accurate and accessible. This provides a potential tool for advising dog breeders and developing breeding programs within a breed. A challenge in doing this is to present complex relationship data in a form that can be readily utilized. Here, we demonstrate the use of a pipeline, known as NetView, to visualize the network of relationships in a subpopulation of German Shepherd Dogs.
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Affiliation(s)
| | - Rachel Booth
- Faculty of Veterinary Science, The University of Sydney, NSW, Australia
| | - Hamutal Mazrier
- Faculty of Veterinary Science, The University of Sydney, NSW, Australia
| | - Mehar S Khatkar
- Faculty of Veterinary Science, The University of Sydney, NSW, Australia
| | - Peter Williamson
- Faculty of Veterinary Science, The University of Sydney, NSW, Australia
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Mortlock SA, Khatkar MS, Williamson P. Comparative Analysis of Genome Diversity in Bullmastiff Dogs. PLoS One 2016; 11:e0147941. [PMID: 26824579 PMCID: PMC4732815 DOI: 10.1371/journal.pone.0147941] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Accepted: 01/11/2016] [Indexed: 11/19/2022] Open
Abstract
Management and preservation of genomic diversity in dog breeds is a major objective for maintaining health. The present study was undertaken to characterise genomic diversity in Bullmastiff dogs using both genealogical and molecular analysis. Genealogical analysis of diversity was conducted using a database consisting of 16,378 Bullmastiff pedigrees from year 1980 to 2013. Additionally, a total of 188 Bullmastiff dogs were genotyped using the 170,000 SNP Illumina CanineHD Beadchip. Genealogical parameters revealed a mean inbreeding coefficient of 0.047; 142 total founders (f); an effective number of founders (fe) of 79; an effective number of ancestors (fa) of 62; and an effective population size of the reference population of 41. Genetic diversity and the degree of genome-wide homogeneity within the breed were also investigated using molecular data. Multiple-locus heterozygosity (MLH) was equal to 0.206; runs of homozygosity (ROH) as proportion of the genome, averaged 16.44%; effective population size was 29.1, with an average inbreeding coefficient of 0.035, all estimated using SNP Data. Fine-scale population structure was analysed using NETVIEW, a population analysis pipeline. Visualisation of the high definition network captured relationships among individuals within and between subpopulations. Effects of unequal founder use, and ancestral inbreeding and selection, were evident. While current levels of Bullmastiff heterozygosity, inbreeding and homozygosity are not unusual, a relatively small effective population size indicates that a breeding strategy to reduce the inbreeding rate may be beneficial.
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Affiliation(s)
- Sally-Anne Mortlock
- Faculty of Veterinary Science, The University of Sydney, New South Wales, 2006, Australia
| | - Mehar S. Khatkar
- Faculty of Veterinary Science, The University of Sydney, New South Wales, 2006, Australia
| | - Peter Williamson
- Faculty of Veterinary Science, The University of Sydney, New South Wales, 2006, Australia
- * E-mail:
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Daly JA, Mortlock SA, Taylor RM, Williamson P. Cluster Analysis of Tumor Suppressor Genes in Canine Leukocytes Identifies Activation State. Bioinform Biol Insights 2015; 9:59-67. [PMID: 27478369 PMCID: PMC4955975 DOI: 10.4137/bbi.s30523] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Revised: 05/23/2016] [Accepted: 05/29/2016] [Indexed: 02/07/2023] Open
Abstract
Cells of the immune system undergo activation and subsequent proliferation in the normal course of an immune response. Infrequently, the molecular and cellular events that underlie the mechanisms of proliferation are dysregulated and may lead to oncogenesis, leading to tumor formation. The most common forms of immunological cancers are lymphomas, which in dogs account for 8%–20% of all cancers, affecting up to 1.2% of the dog population. Key genes involved in negatively regulating proliferation of lymphocytes include a group classified as tumor suppressor genes (TSGs). These genes are also known to be associated with progression of lymphoma in humans, mice, and dogs and are potential candidates for pathological grading and diagnosis. The aim of the present study was to analyze TSG profiles in stimulated leukocytes from dogs to identify genes that discriminate an activated phenotype. A total of 554 TSGs and three gene set collections were analyzed from microarray data. Cluster analysis of three subsets of genes discriminated between stimulated and unstimulated cells. These included 20 most upregulated and downregulated TSGs, TSG in hallmark gene sets significantly enriched in active cells, and a selection of candidate TSGs, p15 (CDKN2B), p18 (CDKN2C), p19 (CDKN1A), p21 (CDKN2A), p27 (CDKN1B), and p53 (TP53) in the third set. Analysis of two subsets suggested that these genes or a subset of these genes may be used as a specialized PCR set for additional analysis.
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Affiliation(s)
- Julie-Anne Daly
- Faculty of Veterinary Science, The University of Sydney, Camperdown, NSW, Australia
| | - Sally-Anne Mortlock
- Faculty of Veterinary Science, The University of Sydney, Camperdown, NSW, Australia
| | - Rosanne M Taylor
- Faculty of Veterinary Science, The University of Sydney, Camperdown, NSW, Australia
| | - Peter Williamson
- Faculty of Veterinary Science, The University of Sydney, Camperdown, NSW, Australia
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