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https://www.readbyqxmd.com/read/28926198/serum-free-human-msc-medium-supports-consistency-in-human-but-not-in-equine-adipose-derived-multipotent-mesenchymal-stromal-cell-culture
#1
Susanna Schubert, Walter Brehm, Aline Hillmann, Janina Burk
For clinical applications of multipotent mesenchymal stromal cells (MSCs), serum-free culture is preferable to standardize cell products and prevent contamination with pathogens. In contrast to human MSCs, knowledge on serum-free culture of large animal MSCs is limited, despite its relevance for preclinical studies and development of veterinary cellular therapeutics. This study aimed to evaluate the suitability of a commercially available serum-free human MSC medium for culturing equine adipose-derived MSCs in comparison with human adipose MSCs...
September 19, 2017: Cytometry. Part A: the Journal of the International Society for Analytical Cytology
https://www.readbyqxmd.com/read/28915878/the-immune-mechanism-of-mycoplasma-hyopneumoniae-168-vaccine-strain-through-dendritic-cells
#2
Yumeng Shen, Weiwei Hu, Yanna Wei, Zhixin Feng, Qian Yang
BACKGROUND: Mycoplasma hyopneumoniae (Mhp) causes porcine enzootic pneumonia, a disease that cause major economic losses in the pig industry. Dendritic cells (DCs), the most effective antigen-presenting cells, are widely distributed beneath respiratory epithelium, DCs uptake and present antigens to T cells, to initiate protective immune responses in different infections. In this study, we investigated the role of porcine DCs in vaccine Mhp-168 exposure. RESULTS: The antigen presenting ability of DCs were improved by vaccine Mhp-168 exposure...
September 15, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28905935/age-related-differences-in-interferon-regulatory-factor-4-and-5-signaling-in-ischemic-brains-of-mice
#3
Shou-Cai Zhao, Chun Wang, Heng Xu, Wen-Qian Wu, Zhao-Hu Chu, Ling-Song Ma, Ying-Dong Zhang, Fudong Liu
Stroke is a disease that mainly affects the elderly. Since the age-related differences in stroke have not been well studied, modeling stroke in aged animals is clinically more relevant. The inflammatory responses to stroke are a fundamental pathological procedure, in which microglial activation plays an important role. Interferon regulatory factor-5 (IRF5) and IRF4 regulate M1 and M2 activation of macrophages, respectively, in peripheral inflammation; but it is unknown whether IRF5/IRF4 are also involved in cerebral inflammatory responses to stroke and whether age-related differences of the IRF5/IRF4 signaling exist in ischemic brain...
September 14, 2017: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/28898280/ilc2s-activated-by-il-25-promote-antigen-specific-th2-and-th9-functions-that-contribute-to-the-control-of-trichinella-spiralis-infection
#4
Pornpimon Angkasekwinai, Wichuda Sodthawon, Siranart Jeerawattanawart, Adithap Hansakon, Kovit Pattanapanyasat, Yui-Hsi Wang
IL-25, an IL-17 family cytokine, derived from epithelial cells was shown to regulate Th2- and Th9-type immune responses. We previously reported that IL-25 was important in promoting efficient protective immunity against T. spiralis infection; however, the cellular targets of IL-25 to elicit type-2 immunity during infection have not yet been addressed. Here, we investigated IL-25-responding cells and their involvement in mediating type-2 immune response during T. spiralis infection. ILC2 and CD4+ Th2 cells residing in the gastrointestinal tract of T...
2017: PloS One
https://www.readbyqxmd.com/read/28895866/specific-immunotypes-of-canine-t-cell-lymphoma-are-associated-with-different-outcomes
#5
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/28884332/subchondral-mesenchymal-stem-cells-from-osteoarthritic-knees-display-high-osteogenic-differentiation-capacity-through-microrna-29a-regulation-of-hdac4
#6
Wei-Shiung Lian, Ren-Wen Wu, Mel S Lee, Yu-Shan Chen, Yi-Chih Sun, Shing-Long Wu, Huei-Jing Ke, Jih-Yang Ko, Feng-Sheng Wang
Subchondral bone deterioration and osteophyte formation attributable to excessive mineralization are prominent features of end-stage knee osteoarthritis (OA). The cellular events underlying subchondral integrity diminishment remained elusive. This study was undertaken to characterize subchondral mesenchymal stem cells (SMSCs) isolated from patients with end-stage knee OA who required total knee arthroplasty. The SMSCs expressed surface antigens CD29, CD44, CD73, CD90, CD105, and CD166 and lacked CD31, CD45, and MHCII expression...
September 7, 2017: Journal of Molecular Medicine: Official Organ of the "Gesellschaft Deutscher Naturforscher und Ärzte"
https://www.readbyqxmd.com/read/28878289/persistence-within-dendritic-cells-marks-an-antifungal-evasion-and-dissemination-strategy-of-aspergillus-terreus
#7
Shih-Hung Hsieh, Oliver Kurzai, Matthias Brock
Aspergillus terreus is an airborne human fungal pathogen causing life-threatening invasive aspergillosis in immunocompromised patients. In contrast to Aspergillus fumigatus, A. terreus infections are associated with high dissemination rates and poor response to antifungal treatment. Here, we compared the interaction of conidia from both fungal species with MUTZ-3-derived dendritic cells (DCs). After phagocytosis, A. fumigatus conidia rapidly escaped from DCs, whereas A. terreus conidia remained persisting with long-term survival...
September 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28876059/pentalinonsterol-a-constituent-of-pentalinon-andrieuxii-possesses-potent-immunomodulatory-activity-and-primes-t-cell-immune-responses
#8
Steve Oghumu, Sanjay Varikuti, Noushin Saljoughian, Cesar Terrazas, Andrew C Huntsman, Narasimham L Parinandi, James R Fuchs, A Douglas Kinghorn, Abhay R Satoskar
The use of natural products as adjuvants has emerged as a promising approach for the development of effective vaccine formulations. Pentalinonsterol (PEN) is a recently isolated compound from the roots of Pentalinon andrieuxii and has been shown to possess antileishmanial activity against Leishmania spp. The objective of this study was to examine the immunomodulatory properties of PEN and evaluate its potential as an adjuvant. Macrophages and bone-marrow-derived dendritic cells (BMDCs) were stimulated with PEN and tested for gene expression, cytokine production, and their ability to activate T cells in vitro...
September 6, 2017: Journal of Natural Products
https://www.readbyqxmd.com/read/28872302/high-affinity-interactions-of-beryllium-2-with-phosphatidylserine-result-in-a-cross-linking-effect-reducing-surface-recognition-of-the-lipid
#9
Yuri Ermakov, Kishore Kamaraju, Antonina Dunina-Barkovskaya, Khava S Vishnyakova, Yegor E Yegorov, Andriy Anishkin, Sergei Sukharev
Beryllium has multiple industrial applications, but its manufacture is associated with serious occupational risk of developing chronic inflammation in lungs known as berylliosis, or chronic beryllium disease (CBD). Although the Be2+-induced abnormal immune responses have recently been linked to a specific MHCII allele, the nature of long-lasting granulomas is not fully understood. Here we show that Be2+ binds with a micromolar affinity to phosphatidylserine (PS), the major surface marker of apoptotic cells...
September 5, 2017: Biochemistry
https://www.readbyqxmd.com/read/28871937/-pleurotus-ferulae-polysaccharide-adjuvant-enhances-the-immune-infertility-of-czp3dna-vaccine
#10
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/28869931/a-phase-ii-exploratory-study-of-pxd-101-belinostat-followed-by-zevalin-in-patients-with-relapsed-aggressive-high-risk-lymphoma
#11
Soham D Puvvada, José M Guillén-Rodríguez, Xavier I Rivera, Kara Heard, Lora Inclan, Monika Schmelz, Jonathan H Schatz, Daniel O Persky
OBJECTIVE: Aggressive lymphomas (aNHL) including diffuse large B-cell lymphoma (DLBCL) have poor outcomes in relapsed refractory patients. Prior studies have demonstrated that loss of major histocompatibility complex class II (MHCII) expression in DLBCL is associated with poor survival. The objective of this single-arm phase II study was to evaluate if PXD-101 would increase MHCII expression, synergize with Zevalin, and improve clinical outcomes. METHODS: This was a single-center open-label phase II trial (NCT01686165) geared toward heavily pretreated patients with CD20-positive aNHL...
September 5, 2017: Oncology
https://www.readbyqxmd.com/read/28857084/serum-amyloid-a-inhibits-dendritic-cell-differentiation-by-suppressing-gm-csf-receptor-expression-and-signaling
#12
Ji Cheol Kim, Young Su Jung, Ha Young Lee, Joon Seong Park, Yoe-Sik Bae
In this study, we report that an acute phase reactant, serum amyloid A (SAA), strongly inhibits dendritic cell differentiation induced by GM-CSF plus IL-4. SAA markedly decreased the expression of MHCII and CD11c. Moreover, SAA decreased cell surface GM-CSF receptor expression. SAA also decreased the expression of PU.1 and C/EBPα, which play roles in the expression of GM-CSF receptor. This inhibitory response by SAA is partly mediated by the well-known SAA receptors, Toll-like receptor 2 and formyl peptide receptor 2...
August 25, 2017: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/28851810/mertk-cleavage-on-resident-cardiac-macrophages-compromises-repair-after-myocardial-ischemia-reperfusion-injury
#13
Matthew DeBerge, Xin-Yi Yeap, Shirley Dehn, Shuang Zhang, Lubov S Grigoryeva, Sol Misener, Daniele Procissi, Xin Zhou, Daniel C Lee, William A Muller, Xunrong Luo, Carla Rothlin, Ira Tabas, Edward B Thorp
Rationale: Clinical benefits of reperfusion after myocardial infarction (MI) are offset by maladaptive innate immune cell function and therapeutic interventions are lacking. Objective: We sought to test the significance of phagocytic clearance by resident and recruited phagocytes after myocardial ischemia reperfusion (I/R). Methods and Results: In humans, we discovered that clinical reperfusion after MI led to significant elevation of the soluble form of MerTK (i.e. solMER), a critical biomarker of compromised phagocytosis by innate macrophages...
August 29, 2017: Circulation Research
https://www.readbyqxmd.com/read/28832681/the-mhc-class-ii-antigen-presentation-pathway-in-human-monocytes-differs-by-subset-and-is-regulated-by-cytokines
#14
Justin Lee, Hanson Tam, Lital Adler, Alexandra Ilstad-Minnihan, Claudia Macaubas, Elizabeth D Mellins
Monocytes play a critical role in the innate and adaptive immune systems, performing phagocytosis, presenting antigen, and producing cytokines. They are a heterogeneous population that has been divided in humans into classical, intermediate, and non-classical subsets, but the roles of these subsets are incompletely understood. In this study, we investigated the expression patterns of MHC class II (MHCII) and associated molecules and find that the intermediate monocytes express the highest levels of the MHC molecules, HLA-DR (tested in n = 30 samples), HLA-DP (n = 30), and HLA-DQ (n = 10)...
2017: PloS One
https://www.readbyqxmd.com/read/28831000/inactivation-of-crebbp-expands-the-germinal-center-b-cell-compartment-down-regulates-mhcii-expression-and-promotes-dlbcl-growth
#15
Hind Hashwah, Corina A Schmid, Sabrina Kasser, Katrin Bertram, Anna Stelling, Markus G Manz, Anne Müller
The genes encoding the histone acetyl-transferases (HATs) CREB binding protein (CREBBP) and EP300 are recurrently mutated in the activated B cell-like and germinal center (GC) B cell-like subtypes of diffuse large B cell lymphoma (DLBCL). Here, we introduced a patient mutation into a human DLBCL cell line using CRISPR and deleted Crebbp and Ep300 in the GC B cell compartment of mice. CREBBP-mutant DLBCL clones exhibited reduced histone H3 acetylation, expressed significantly less MHCII, and grew faster than wild-type clones in s...
August 22, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28814629/modular-tissue-engineering-for-the-vascularization-of-subcutaneously-transplanted-pancreatic-islets
#16
Alexander E Vlahos, Nicholas Cober, Michael V Sefton
The transplantation of pancreatic islets, following the Edmonton Protocol, is a promising treatment for type I diabetics. However, the need for multiple donors to achieve insulin independence reflects the large loss of islets that occurs when islets are infused into the portal vein. Finding a less hostile transplantation site that is both minimally invasive and able to support a large transplant volume is necessary to advance this approach. Although the s.c. site satisfies both these criteria, the site is poorly vascularized, precluding its utility...
August 29, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28811319/galectin-8-activates-dendritic-cells-and-stimulates-antigen-specific-immune-response-elicitation
#17
Julieta Carabelli, Valeria Quattrocchi, Alejandra D'Antuono, Patricia Zamorano, María Virginia Tribulatti, Oscar Campetella
Galectin-8 (Gal-8) is a mammalian β-galactoside-binding lectin, endowed with proinflammatory properties. Given its capacity to enhance antigen-specific immune responses in vivo, we investigated whether Gal-8 was also able to promote APC activation to sustain T cell activation after priming. Both endogenous [dendritic cells (DCs)] and bone marrow-derived DCs (BMDCs) treated with exogenous Gal-8 exhibited a mature phenotype characterized by increased MHC class II (MHCII), CD80, and CD86 surface expression. Moreover, Gal-8-treated BMDCs (Gal-8-BMDCs) stimulated antigen-specific T cells more efficiently than immature BMDCs (iBMDCs)...
August 15, 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28811075/regulatory-t-cell-deficient-scurfy-mice-exhibit-a-th2-m2-like-inflammatory-response-in-the-skin
#18
Stefanie Haeberle, Verena Raker, Jessica Haub, Yong O Kim, Shih-Yen Weng, Osman K Yilmaz, Alexander Enk, Kerstin Steinbrink, Detlef Schuppan, Eva N Hadaschik
BACKGROUND: Scurfy mice have a functional defect in regulatory T cells (Treg), which leads to lethal multi-organ inflammation. The missing Treg function results in uncontrolled autoimmune cellular and humoral inflammatory responses. We and others have previously shown that during the course of disease scurfy mice develop severe skin inflammation and autoantibodies including anti-nuclear autoantibodies (ANA). OBJECTIVE: Autoimmune skin inflammation and ANA are hallmarks for the diagnosis of autoimmune connective tissue diseases; therefore we analyzed scurfy mice for typical signs of these diseases...
September 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28772190/an-antigen-specific-semi-therapeutic-treatment-with-local-delivery-of-tolerogenic-factors-through-a-dual-sized-microparticle-system-blocks-experimental-autoimmune-encephalomyelitis
#19
Jonathan J Cho, Joshua M Stewart, Theodore T Drashansky, Maigan A Brusko, Ashley N Zuniga, Kyle J Lorentsen, Benjamin G Keselowsky, Dorina Avram
Antigen-specific treatments are highly desirable for autoimmune diseases in contrast to treatments which induce systemic immunosuppression. A novel antigen-specific therapy has been developed which, when administered semi-therapeutically, is highly efficacious in the treatment of the mouse model for multiple sclerosis, experimental autoimmune encephalomyelitis (EAE). The treatment uses dual-sized, polymeric microparticles (dMPs) loaded with specific antigen and tolerizing factors for intra- and extra-cellular delivery, designed to recruit and modulate dendritic cells toward a tolerogenic phenotype without systemic release...
July 24, 2017: Biomaterials
https://www.readbyqxmd.com/read/28770217/dairy-cows-naturally-infected-with-bovine-leukemia-virus-exhibit-abnormal-b-and-t-cell-phenotypes-after-primary-and-secondary-exposures-to-keyhole-limpet-hemocyanin
#20
Meredith C Frie, Kelly R B Sporer, Oscar J Benitez, Joseph C Wallace, Casey J Droscha, Paul C Bartlett, Paul M Coussens
Bovine leukemia virus (BLV) is a retrovirus that is highly prevalent in US dairy herds: over 83% are BLV infected and the within-herd infection rate can be almost 50% on average. While BLV is known to cause lymphosarcomas, only 5% or fewer infected cattle will develop lymphoma; this low prevalence of cancer has historically not been a concern to dairy producers. However, more recent research has found that BLV(+) cows without lymphoma produce less milk and have shorter lifespans than uninfected herdmates. It has been hypothesized that BLV infection interferes with normal immune function in infected cattle, and this could lead to reduced dairy production...
2017: Frontiers in Veterinary Science
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