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https://www.readbyqxmd.com/read/28810829/blocking-il-10-signalling-at-the-time-of-immunization-does-not-increase-unwanted-side-effects-in-mice
#1
Guoying Ni, Zaowen Liao, Shu Chen, Tianfang Wang, Jianwei Yuan, Xuan Pan, Kate Mounsey, Shelley Cavezza, Xiaosong Liu, Ming Q Wei
BACKGROUND: Cancer therapeutic vaccine induced cytotoxic T cell (CTL) responses are pivotal for the killing of tumour cells. Blocking interleukin 10 (IL-10) signalling at the time of immunization increases vaccine induced CTL responses and improves prevention of tumour growth in animal models compared to immunization without an IL-10 signalling blockade. Therefore, this immunization strategy may have potential to curtail cancer in a clinical setting. However, IL-10 deficiency leads to autoimmune disease in the gut...
August 15, 2017: BMC Immunology
https://www.readbyqxmd.com/read/28800593/in-vivo-functional-and-morphological-characterization-of-bone-and-striated-muscle-microcirculation-in-nsg-mice
#2
Haider Mussawy, Lennart Viezens, Gerrit Hauenherm, Malte Schroeder, Christian Schaefer
Organ-specific microcirculation plays a central role in tumor growth, tumor cell homing, tissue engineering, and wound healing. Mouse models are widely used to study these processes; however, these mouse strains often possess unique microhemodynamic parameters, making it difficult to directly compare experiments. The full functional characterization of bone and striated muscle microcirculatory parameters in non-obese diabetic-severe combined immunodeficiency/y-chain; NOD-Prkds IL2rg (NSG) mice has not yet been reported...
2017: PloS One
https://www.readbyqxmd.com/read/28798321/crispr-cas9-mediated-deletion-of-foxn1-in-nod-scid-il2rg-mice-results-in-severe-immunodeficiency
#3
Xinru Wei, Yunxin Lai, Baiheng Li, Le Qin, Youdi Xu, Simiao Lin, Suna Wang, Qiting Wu, Qiubin Liang, Guohua Huang, Qiuhua Deng, Pentao Liu, Donghai Wu, Liangxue Lai, Yao Yao, Peng Li
Immunodeficient mice engrafted with either normal or cancerous human cells are widely used in basic and translational research. In particular, NOD/SCID/IL2rg(-/-) mice can support the growth of various types of human cancer cells. However, the hairs of these mice interfere with the observation and imaging of engrafted tissues. Therefore, novel hairless strains exhibiting comparable immunodeficiency would be beneficial. Recently, the CRISPR/Cas9 system has been used for efficient multiplexed genome editing. In the present study, we generated a novel strain of nude NOD/SCID/IL2rg(-/-) (NSIN) mice by knocking out Foxn1 from NOD/SCID/IL2rg(-/-) (NSI) mice using the CRISPR/Cas9 system...
August 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28798231/p2x7-receptor-antagonism-prevents-il-1%C3%AE-release-from-salivary-epithelial-cells-and-reduces-inflammation-in-a-mouse-model-of-autoimmune-exocrinopathy
#4
Mahmoud G Khalafalla, Lucas T Woods, Jean M Camden, Aslam A Khan, Kirsten H Limesand, Michael J Petris, Laurie Erb, Gary A Weisman
Salivary gland inflammation is a hallmark of Sjogrens syndrome (SS), a common autoimmune disease characterized by lymphocytic infiltration of the salivary gland and loss of saliva secretion, predominantly in women. The P2X7 receptor (P2X7R) is an ATP-gated non-selective cation channel that induces inflammatory responses in cells and tissues, including salivary gland epithelium. In immune cells, P2X7R activation induces the production of proinflammatory cytokines, including IL-1β and IL-18, by inducing the oligomerization of the multiprotein complex NLRP3-type inflammasome...
August 10, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28783585/downregulated-nlrp3-and-nlrp1-inflammasomes-signaling-pathways-in-the-development-and-progression-of-type-1-diabetes-mellitus
#5
Huawei Liu, Ruiying Xu, Qingyu Kong, Jiling Liu, Zhen Yu, Cuifen Zhao
BACKGROUND: NLRP3 and NLRP1 inflammasomes signaling pathways may play an important role in the development and progression of type 1 diabetes mellitus (T1DM). However, relative research is rare. METHODS: The blood mononuclear cells (PBMCs) and granulocytes (GCs) were collected from T1DM patients. The mRNA and protein expression levels were detected by qRT-PCR and Western blotting, respectively. The NLRP3/NLRP1was knocked down by transfected with siRNA, or ovexpressed by infected with lentiviral vectors in PBMCs and GCs from non obese diabetic (NOD) mice, respectively...
August 4, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28771521/regulation-of-type-1-diabetes-development-and-b-cell-activation-in-nonobese-diabetic-mice-by-early-life-exposure-to-a-diabetogenic-environment
#6
Alessandra De Riva, Maja Wållberg, Francesca Ronchi, Richard Coulson, Andrew Sage, Lucy Thorne, Ian Goodfellow, Kathy D McCoy, Miyuki Azuma, Anne Cooke, Robert Busch
Microbes, including viruses, influence type 1 diabetes (T1D) development, but many such influences remain undefined. Previous work on underlying immune mechanisms has focussed on cytokines and T cells. Here, we compared two nonobese diabetic (NOD) mouse colonies, NODlow and NODhigh, differing markedly in their cumulative T1D incidence (22% vs. 90% by 30 weeks in females). NODhigh mice harbored more complex intestinal microbiota, including several pathobionts; both colonies harbored segmented filamentous bacteria (SFB), thought to suppress T1D...
2017: PloS One
https://www.readbyqxmd.com/read/28759942/11-keto-%C3%AE-boswellic-acid-inhibits-lymphocyte-cd3-infiltration-into-pancreatic-islets-of-young-none-obese-diabetic-nod-mice
#7
Ahmed M Shehata, Leticia Quintanilla-Fend, Sabrina Bettio, Zahra Kamyabi-Moghaddam, Ursula A Kohlhofer, Werner A Scherbaum, Hermann P T Ammon
11-Keto-β-Boswellic acid (KBA) has been shown to prevent infiltration of lymphocytes into pancreatic islets and appearance of peri-insular apoptotic cells in an animal model of autoimmune diabetes caused by injection of Multiple Low Doses of Streptozotocin (MLD-STZ), which is a chemical compound belonging to the class of nitrososureas. The aim of this work was to study whether or not KBA can also prevent/attenuate infiltration of lymphocytes into pancreatic islets and appearance of peri-insular apoptotic cells in an animal model of autoimmune diabetes caused by genetic dysfunction resembling human type 1 diabetes in several important features...
July 31, 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/28754817/multifaceted-role-of-btla-in-the-control-of-cd8-t-cell-fate-after-antigen-encounter
#8
Krit Ritthipichai, Cara Haymaker, Melisa Martinez-Paniagua, Andrew Aschenbrenner, Xiaohui Yi, Minying Zhang, Charuta Kale, Yared Hailemichael, Willem W Overwijk, Luis Vence, Jason Roszik, Navin Varadarajan, Roza Nurieva, Laszlo G Radvanyi, Patrick Hwu, Chantale Bernatchez
Adoptive T-cell therapy using autologous tumor-infiltrating lymphocytes (TIL) has shown an overall clinical response rate 40-50% in metastatic melanoma patients. BTLA (B-and-T lymphocyte attenuator) expression on transferred CD8(+) TIL was associated with better clinical outcome. The suppressive function of the ITIM and ITSM motifs of BTLA is well described. Here, we sought to determine the functional characteristics of the CD8(+)BTLA(+)TIL subset and define the contribution of the Grb2 motif of BTLA in T cell co-stimulation...
July 28, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28753786/tumor-xenografts-of-human-clear-cell-renal-cell-carcinoma-but-not-corresponding-cell-lines-recapitulate-clinical-response-to-sunitinib-feasibility-of-using-biopsy-samples
#9
Yiyu Dong, Brandon J Manley, Maria F Becerra, Almedina Redzematovic, Jozefina Casuscelli, Daniel M Tennenbaum, Ed Reznik, Song Han, Nicole Benfante, Ying-Bei Chen, Maria E Arcila, Omer Aras, Martin H Voss, Darren R Feldman, Robert J Motzer, Nicola Fabbri, John H Healey, Patrick J Boland, Mohit Chawla, Jeremy C Durack, Chung-Han Lee, Jonathan A Coleman, Paul Russo, A Ari Hakimi, Emily H Cheng, James J Hsieh
BACKGROUND: Parallel development of preclinical models that recapitulate treatment response observed in patients is central to the advancement of personalized medicine. OBJECTIVE: To evaluate the use of biopsy specimens to develop patient-derived xenografts and the use of corresponding cell lines from renal cell carcinoma (RCC) tumors for the assessment of histopathology, genomics, and treatment response. DESIGN, SETTING, AND PARTICIPANTS: A total of 74 tumor specimens from 66 patients with RCC were implanted into immunocompromised NOD-SCID IL2Rg(-/-) mice...
August 25, 2016: European Urology Focus
https://www.readbyqxmd.com/read/28740491/nod-like-receptor-p3-inflammasome-controls-protective-th1-th17-immunity-against-pulmonary-paracoccidioidomycosis
#10
Claudia Feriotti, Eliseu Frank de Araújo, Flavio Vieira Loures, Tania Alves da Costa, Nayane Alves de Lima Galdino, Dario Simões Zamboni, Vera Lucia Garcia Calich
The NOD-like receptor P3 (NLRP3) inflammasome is an intracellular multimeric complex that triggers the activation of inflammatory caspases and the maturation of IL-1β and IL-18, important cytokines for the innate immune response against pathogens. The functional NLRP3 inflammasome complex consists of NLRP3, the adaptor protein apoptosis-associated speck-like protein, and caspase-1. Various molecular mechanisms were associated with NLRP3 activation including the presence of extracellular ATP, recognized by the cell surface P2X7 receptor (P2X7R)...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28740490/inhibition-of-the-nod-like-receptor-protein-3-inflammasome-is-protective-in-juvenile-influenza-a-virus-infection
#11
Bria M Coates, Kelly L Staricha, Nandini Ravindran, Clarissa M Koch, Yuan Cheng, Jennifer M Davis, Dale K Shumaker, Karen M Ridge
Influenza A virus (IAV) is a significant cause of life-threatening lower respiratory tract infections in children. Antiviral therapy is the mainstay of treatment, but its effectiveness in this age group has been questioned. In addition, damage inflicted on the lungs by the immune response to the virus may be as important to the development of severe lung injury during IAV infection as the cytotoxic effects of the virus itself. A crucial step in the immune response to IAV is activation of the NOD-like receptor protein 3 (NLRP3) inflammasome and the subsequent secretion of the inflammatory cytokines, interleukin-1β (IL-1β), and interleukin-18 (IL-18)...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28736194/the-epigenetic-drug-trichostatin-a-ameliorates-experimental-autoimmune-encephalomyelitis-via-t-cell-tolerance-induction-and-impaired-influx-of-t-cells-into-the-spinal-cord
#12
Arathi Jayaraman, Advait Soni, Bellur S Prabhakar, Mark Holterman, Sundararajan Jayaraman
Multiple sclerosis is a T cell mediated chronic demyelinating disease of the central nervous system. Although currently available therapies reduce relapses, they do not facilitate tolerization of myelin antigen-specific T lymphocytes to ensure prolonged protection against multiple sclerosis. Here, we show that treatment of NOD mice with the histone deacetylase inhibitor, Trichostatin A affords robust protection against myelin peptide induced experimental autoimmune encephalomyelitis, a mouse model of multiple sclerosis...
July 20, 2017: Neurobiology of Disease
https://www.readbyqxmd.com/read/28733313/granzyme-a-deficiency-breaks-immune-tolerance-and-promotes-autoimmune-diabetes-through-a-type-i-interferon-dependent-pathway
#13
Zia Ua Mollah, Hong Sheng Quah, Kate L Graham, Gaurang Jhala, Balasubramanian Krishnamurthy, Joanna Francisca M Dharma, Jonathan Chee, Prerak M Trivedi, Evan G Pappas, Leanne Mackin, Edward Pf Chu, Satoru Akazawa, Stacey Fynch, Charlotte Hodson, Andrew J Deans, Joseph A Trapani, Mark Mw Chong, Phillip I Bird, Thomas C Brodnicki, Helen E Thomas, Thomas Wh Kay
Granzyme A is a protease implicated in the degradation of intracellular DNA. Nucleotide complexes are known triggers of systemic autoimmunity, but a role in organ-specific autoimmune disease has not been demonstrated. To investigate whether such a mechanism could be an endogenous trigger for autoimmunity, we examined the impact of granzyme A deficiency in the NOD mouse model of autoimmune diabetes. Granzyme A deficiency resulted in an increased incidence in diabetes associated with accumulation of single stranded DNA in immune cells and induction of an interferon response in pancreatic islets...
July 21, 2017: Diabetes
https://www.readbyqxmd.com/read/28731142/nlrc3-promotes-host-resistance-against-pseudomonas-aeruginosa-induced-keratitis-by-promoting-the-degradation-of-irak1
#14
Litao Guo, Qingzhu Kong, Zhijun Dong, Weili Dong, Xiaoxiao Fu, Leqi Su, Xiaobo Tan
Pseudomonas aeruginosa (PA)-induced keratitis is one of the most common and destructive bacterial diseases. The pathogenesis of PA infections is closely associated with excessive inflammatory responses. Nucleotide oligomerization domain (NOD)-like receptor (NLR) family with caspase activation and recruitment domain (CARD) containing 3 (NLRC3) protein has been implicated as a negative regulator of inflammation and antiviral response, but the role of NLRC3 in PA-induced keratitis has not been described...
July 20, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28728856/achaete-scute-complex-homologue-2-accelerates-the-development-of-sj%C3%A3-gren-s-syndrome-like-disease-in-the-nod-shiltj-mouse
#15
Sung-Min Kim, Jeong-Eun Kwon, Jin-Sil Park, Hyeon-Beom Seo, Kyung-Ah Jung, Young-Mee Moon, Jennifer Lee, Seung-Ki Kwok, Mi-La Cho, Sung-Hwan Park
Achaete-scute complex homologue 2 (Ascl2) has been reported to induce the differentiation and activation of follicular helper T (TFH) cells, which are essential for development of Sjögren's syndrome (SS). This study examined whether Ascl2 plays a role in the development of SS. NOD/ShiLtJ mice were injected with an Ascl2-overexpression vector, and the infiltration of lymphocytes into salivary and lacrimal glands was assessed. The expression of inflammatory cytokines and chemoattractants for T or B cells was measured...
July 17, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28725894/quantifying-spontaneous-metastasis-in-a-syngeneic-mouse-melanoma-model-using-real-time-pcr
#16
Wentao Deng, Sarah L McLaughlin, David J Klinke
Modeling metastasis in vivo with animals is a priority for both revealing mechanisms of tumor dissemination and developing therapeutic methods. While conventional intravenous injection of tumor cells provides an efficient and consistent system for studying tumor cell extravasation and colonization, studying spontaneous metastasis derived from orthotopic tumor sites has the advantage of modeling more aspects of the metastatic cascade, but is challenging as it is difficult to detect small numbers of metastatic cells...
August 7, 2017: Analyst
https://www.readbyqxmd.com/read/28713380/targeting-the-human-t-cell-inducible-costimulator-molecule-with-a-monoclonal-antibody-prevents-graft-vs-host-disease-and-preserves-graft-vs-leukemia-in-a-xenograft-murine-model
#17
Aude Burlion, Simon Brunel, Nicolas Y Petit, Daniel Olive, Gilles Marodon
BACKGROUND: Graft-vs-host disease (GVHD) is a major complication of allogenic bone marrow transplantation (BMT). Targeting costimulatory molecules with antagonist antibodies could dampen the excessive immune response that occurs, while preserving the beneficial graft vs leukemia (GVL) of the allogeneic response. Previous studies using a mouse model of GVHD have shown that targeting the T-cell Inducible COStimulator (ICOS, CD278) molecule is beneficial, but it is unclear whether the same applies to human cells...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28711285/anti-il-21-monoclonal-antibody-combined-with-liraglutide-effectively-reverses-established-hyperglycemia-in-mouse-models-of-type-1-diabetes
#18
Anna K Rydén, Nikole R Perdue, Philippe P Pagni, Claire B Gibson, Sowbarnika S Ratliff, Rikke K Kirk, Travis J Friesen, Claus Haase, Ken Coppieters, Matthias G von Herrath, Tamar E Boursalian
Immunotherapy for type 1 diabetes (T1D) has previously focused on suppressing the autoimmune response against pancreatic beta cells to preserve endogenous insulin production and regulate glucose levels. With increased attention toward combination therapy strategies, studies indicate the multifunctional cytokine interleukin-21 (IL-21) may be a suitable target as an immuno-modulatory arm, while glucagon-like peptide-1 receptor (GLP-1R) agonists may be appropriate as a beta cell protective arm in combination therapy for T1D...
July 12, 2017: Journal of Autoimmunity
https://www.readbyqxmd.com/read/28698470/real-time-amperometric-recording-of-extracellular-h%C3%A2-o%C3%A2-in-the-brain-of-immunocompromised-mice-an-in-vitro-ex-vivo-and-in-vivo-characterisation-study
#19
Caroline H Reid, Niall J Finnerty
We detail an extensive characterisation study on a previously described dual amperometric H₂O₂ biosensor consisting of H₂O₂ detection (blank) and degradation (catalase) electrodes. In vitro investigations demonstrated excellent H₂O₂ sensitivity and selectivity against the interferent, ascorbic acid. Ex vivo studies were performed to mimic physiological conditions prior to in vivo deployment. Exposure to brain tissue homogenate identified reliable sensitivity and selectivity recordings up to seven days for both blank and catalase electrodes...
July 8, 2017: Sensors
https://www.readbyqxmd.com/read/28692149/animal-models-of-human-type-1-diabetes-for-evaluating-combination-therapies-and-successful-translation-to-the-patient-with-type-1-diabetes
#20
REVIEW
Sigurd Lenzen
Animal models of human type 1 diabetes will be of a great importance for the evaluation of new combination therapies with curative potential. However, reliable predictive power for successful translation to patients with type 1 diabetes is crucial. This will be particularly important in the future when evaluating success of new combination therapies which show great promise for preservation and restoration of beta cell mass and thereby reverse the type 1 diabetic hyperglycaemia. But not all spontaneous animal models are equally well suited for this purpose...
July 10, 2017: Diabetes/metabolism Research and Reviews
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