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https://www.readbyqxmd.com/read/28938453/variable-effects-of-dietary-selenium-in-mice-that-spontaneously-develop-a-spectrum-of-thyroid-autoantibodies
#1
Sandra M McLachlan, Holly Aliesky, Bianca Banuelos, Shane S Que Hee, Basil Rapoport
Selenium (Se) is a critical element in thyroid function and variable dietary Se intake influences immunity. Consequently, dietary Se could influence development of thyroid autoimmunity and provide an adjunct to treat autoimmune thyroid dysfunction. NOD.H2h4 mice spontaneously develop autoantibodies to thyroglobulin (Tg) and thyroid peroxidase (TPO). This mouse strain expressing a human TSHR A-subunit transgene in the thyroid also develops pathogenic TSHR autoantibodies. In this report, we investigated whether dietary Se influences these immune processes...
August 25, 2017: Endocrinology
https://www.readbyqxmd.com/read/28935001/lack-of-effect-of-murine-astrovirus-infection-on-dextran-sulfate-induced-colitis-in-nlrp3-deficient-mice
#2
Susan R Compton, Carmen J Booth, James D Macy
Murine astrovirus (MuAstV) is a recently identified, widespread infection among laboratory mice. MuAstV is found predominantly in the gastrointestinal tract of mice. Human and turkey astroviruses have been shown to disrupt tight junctions in the intestinal epithelium. The potential of MuAstV to alter research results was tested in a well-established dextran sodium sulfate (DSS)-induced colitis model in Nod-like receptor 3 (NLRP3)-deficient mice. This model offers a direct approach to determine whether MuAstV, as a component of the mouse microbiome, contributes to the issue of poor reproducibility in murine inflammatory bowel disease research...
October 1, 2017: Comparative Medicine
https://www.readbyqxmd.com/read/28919991/umbilical-cord-blood-cd34-progenitor-derived-nk-cells-efficiently-kill-ovarian-cancer-spheroids-and-intraperitoneal-tumors-in-nod-scid-il2rg-null-mice
#3
Janneke S Hoogstad-van Evert, Jeannette Cany, Dirk van den Brand, Manon Oudenampsen, Roland Brock, Ruurd Torensma, Ruud L Bekkers, Joop H Jansen, Leon F Massuger, Harry Dolstra
Adoptive transfer of allogeneic natural killer (NK) cells is an attractive therapy approach against ovarian carcinoma. Here, we evaluated the potency of highly active NK cells derived from human CD34+ haematopoietic stem and progenitor cells (HSPC) to infiltrate and mediate killing of human ovarian cancer spheroids using an in vivo-like model system and mouse xenograft model. These CD56+Perforin+ HSPC-NK cells were generated under stroma-free conditions in the presence of StemRegenin-1, IL-15, and IL-12, and exerted efficient cytolytic activity and IFNγ production toward ovarian cancer monolayer cultures...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28902875/interferon-%C3%AE-treatment-in-vitro-elicits-some-of-the-changes-in-cathepsin-s-and-antigen-presentation-characteristic-of-lacrimal-glands-and-corneas-from-the-nod-mouse-model-of-sj%C3%A3-gren-s-syndrome
#4
Zhen Meng, Wannita Klinngam, Maria C Edman, Sarah F Hamm-Alvarez
Inflammation and impaired secretion by lacrimal and salivary glands are hallmarks of the autoimmune disease, Sjögren's Syndrome. These changes in the lacrimal gland promote dryness and inflammation of the ocular surface, causing pain, irritation and corneal damage. The changes that initiate and sustain autoimmune inflammation in the lacrimal gland are not well-established. Here we demonstrate that interferon-γ (IFN-γ) is significantly elevated in lacrimal gland and tears of the male NOD mouse, a model of autoimmune dacryoadenitis which exhibits many ocular characteristics of Sjögren's Syndrome, by 12 weeks of age early in lacrimal gland inflammation...
2017: PloS One
https://www.readbyqxmd.com/read/28893602/raltegravir-blocks-the-infectivity-of-red-fluorescent-protein-mcherry-labeled-hiv-1jr-fl-in-the-setting-of-post-exposure-prophylaxis-in-nod-scid-jak3-mice-transplanted-with-human-pbmcs
#5
Hiromi Ogata-Aoki, Nobuyo Higashi-Kuwata, Shin-Ichiro Hattori, Hironori Hayashi, Matthew Danish, Manabu Aoki, Chiemi Shiotsu, Yumi Hashiguchi, Akinobu Hamada, Hisataka Kobayashi, Hironobu Ihn, Seiji Okada, Hiroaki Mitsuya
Employing NOD/SCID/Jak3(-/-) mice transplanted with human PBMCs (hNOJ mice) and replication-competent, red-fluorescent-protein (mCherry; mC)-labeled HIV-1JR-FL (HIVmC), we examined whether early antiretroviral treatment blocked the establishment of HIV-1 infection. The use of hNOJ mice and HIVmC enabled us to visually locate infection foci and to examine the early dynamics of HIVmC infection without using a large amount of antiretroviral unlike in non-human primate models. Although when raltegravir (RAL) administration was begun 1 day after intraperitoneal (ip) inoculation of HIVmC, no plasma p24 or plasma HIV-1-RNA (pRNA) were detected in 10 of 12 hNOJ (hNOJmC(RAL+)) mice over 14-day observation, all 10 untreated hNOJmC (hNOJmC(RAL-)) mice became positive for p24 and pRNA and had significantly swollen lymph nodes in peritoneal cavity and abundant p24(+)/mC(+)/CD3(+)/CD4(+) T cells and p24(+)/mC(+)/CD68(+) monocytes/macrophages were identified in their omenta and mesenteric lymphoid tissues/lymph nodes...
September 8, 2017: Antiviral Research
https://www.readbyqxmd.com/read/28892093/rapid-generation-of-col7a1-mouse-model-of-recessive-dystrophic-epidermolysis-bullosa-and-partial-rescue-via-immunosuppressive-dermal-mesenchymal-stem-cells
#6
Beau R Webber, Kyle T O'Connor, Ron T McElmurry, Elise N Durgin, Cindy R Eide, Christopher J Lees, Megan J Riddle, Wendy E Mathews, Natasha Y Frank, Mark A Kluth, Christoph Ganss, Branden S Moriarity, Markus H Frank, Mark J Osborn, Jakub Tolar
Recessive dystrophic epidermolysis bullosa (RDEB) is a debilitating and ultimately lethal blistering disease caused by mutations to the Col7a1 gene. Development of novel cell therapies for the treatment of RDEB would be fostered by having immunodeficient mouse models able to accept human cell grafts; however, immunodeficient models of many genodermatoses such as RDEB are lacking. To overcome this limitation, we combined the clustered regularly interspaced short palindromic repeats and associated nuclease (CRISPR/Cas9) system with microinjection into NOD/SCID IL2rγc(null) (NSG) embryos to rapidly develop an immunodeficient Col7a1(-/-) mouse model of RDEB...
September 11, 2017: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/28887632/multipeptide-coupled-nanoparticles-induce-tolerance-in-humanised-hla-transgenic-mice-and-inhibit-diabetogenic-cd8-t-cell-responses-in-type-1-diabetes
#7
Xinyu Xu, Lingling Bian, Min Shen, Xin Li, Jing Zhu, Shuang Chen, Lei Xiao, Qingqing Zhang, Heng Chen, Kuanfeng Xu, Tao Yang
AIMS/HYPOTHESIS: Induction of antigen-specific immunological tolerance may provide an attractive immunotherapy in the NOD mouse model but the conditions that lead to the successful translation to human type 1 diabetes are limited. In this study, we covalently linked 500 nm carboxylated polystyrene beads (PSB) with a mixture of immunodominant HLA-A*02:01-restricted epitopes (peptides-PSB) that may have high clinical relevance in humans as they promote immune tolerance; we then investigated the effect of the nanoparticle-peptide complexes on T cell tolerance...
September 8, 2017: Diabetologia
https://www.readbyqxmd.com/read/28854975/ruxolitinib-nilotinib-cotreatment-inhibits-leukemia-propagating-cells-in-philadelphia-chromosome-positive-all
#8
Yuan Kong, Yi-Lin Wu, Yang Song, Min-Min Shi, Xie-Na Cao, Hong-Yan Zhao, Ya-Zhen Qin, Yue-Yun Lai, Hao Jiang, Qian Jiang, Xiao-Jun Huang
BACKGROUND: As one of the major treatment obstacles in Philadelphia chromosome-positive acute lymphoblastic leukemia (Ph(+)ALL), relapse of Ph(+)ALL may result from the persistence of leukemia-propagating cells (LPCs). Research using a xenograft mouse assay recently determined that LPCs were enriched in the CD34(+)CD38(-)CD58(-) fraction in human Ph(+)ALL. Additionally, a cohort study demonstrated that Ph(+)ALL patients with a LPCs phenotype at diagnosis exhibited a significantly higher cumulative incidence of relapse than those with the other cell phenotypes even with uniform front-line imatinib-based therapy pre- and post-allotransplant, thus highlighting the need for novel LPCs-based therapeutic strategies...
August 30, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28851631/strain-specific-helper-t-cell-profile-in-the-gut-associated-lymphoid-tissue
#9
Suzana Stanisavljević, Neda Đedović, Milica Vujičić, Tamara Saksida, Bojan Jevtić, Boško Milovanović, Miljana Momčilović, Đorđe Miljković, Ivana Stojanović
C57BL/6, BALB/c and NOD mice are among the most frequently used strains in autoimmunity research. NOD mice spontaneously develop type 1 diabetes (T1D) and they are prone to induction of experimental autoimmune encephalomyelitis (EAE). Both diseases can be routinely induced in C57BL/6 mice, but not in BALB/c mice. Also, C57BL/6 mice are generally considered T helper (Th)1-biased and BALB/c Th2-biased mice. Having in mind increasingly appreciated role of gut associated lymphoid tissue (GALT) cells in autoimmunity, especially in relation to gut Th17 and regulatory T (Treg) cells, our aim was to determine if there are differences in proportion of CD4(+) T cell populations in mesenteric lymph nodes and Peyer's patches of these mouse strains...
August 26, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28837629/effects-of-subconjunctival-administration-of-anti-high-mobility-group-box-1-on-dry-eye-in-a-mouse-model-of-sj%C3%B3-gren-s-syndrome
#10
Kyeong Hwan Kim, Dong Hyun Kim, Hyun Jeong Jeong, Jin Suk Ryu, Yu Jeong Kim, Joo Youn Oh, Mee Kum Kim, Won Ryang Wee
PURPOSE: Extracellular high mobility group box 1 (HMGB1) acts as a damage associated molecular pattern molecule through the Toll-like receptor to promote autoreactive B cell activation, which may be involved in the pathogenesis of Sjӧgren's syndrome. The aim of this study was to investigate the effect of subconjunctival administration of anti-HMGB1 on dry eye in a mouse model of Sjӧgren's syndrome. METHODS: Ten weeks-old NOD.B10.H2b mice were subconjunctivally injected with 0...
2017: PloS One
https://www.readbyqxmd.com/read/28831005/protective-major-histocompatibility-complex-allele-prevents-type-1-diabetes-by-shaping-the-intestinal-microbiota-early-in-ontogeny
#11
Michael Silverman, Lindsay Kua, Alessandro Tanca, Mauro Pala, Antonio Palomba, Ceylan Tanes, Kyle Bittinger, Sergio Uzzau, Christophe Benoist, Diane Mathis
Certain MHC-II or HLA-D alleles dominantly protect from particular autoimmune diseases. For example, expression of the MHC-II Eα:Eβ complex potently protects nonobese diabetic (NOD) mice, which normally lack this isotype, from spontaneous development of type 1 diabetes. However, the underlying mechanisms remain debated. We investigated MHC-II-mediated protection from type 1 diabetes using a previously reported NOD mouse line expressing an Eα transgene and, thereby, the Eα:Eβ complex. Eα16/NOD females vertically protected their NOD offspring from diabetes and insulitis, an effect that was dependent on the intestinal microbiota; moreover, they developed autoimmunity when treated with certain antibiotics or raised in a germ-free environment...
August 22, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28830580/antibiotic-associated-manipulation-of-the-gut-microbiota-and-phenotypic-restoration-in-nod-mice
#12
James R Fahey, Bonnie L Lyons, Haiyan L Olekszak, Anthony J Mourino, Jeremy J Ratiu, Jeremy J Racine, Harold D Chapman, David V Serreze, Dina L Baker, N Ken Hendrix
Segmented filamentous bacterium (SFB) a gram-positive, anaerobic, and intestinal commensal organism directly influences the development of Th17 helper cells in the small intestine of mice. In NOD mice, SFB colonization interferes with the development of type 1 diabetes (T1D), a T-cell-mediated autoimmune disease, suggesting that SFB may influence Th17 cells to inhibit Th1 populations associated with the anti-β-cell immune response. This effect is a serious concern for investigators who use NOD mice for diabetes research because the expected incidence of disease decreases markedly when they are colonized by SFB...
August 1, 2017: Comparative Medicine
https://www.readbyqxmd.com/read/28830537/combined-targeting-of-arf1-and-ras-potentiates-anticancer-activity-for-prostate-cancer-therapeutics
#13
Liwei Lang, Chloe Shay, Xiangdong Zhao, Yong Teng
BACKGROUND: Although major improvements have been made in surgical management, chemotherapeutic, and radiotherapeutic of prostate cancer, many prostate cancers remain refractory to treatment with standard agents. Therefore, the identification of new molecular targets in cancer progression and development of novel therapeutic strategies to target them are very necessary for achieving better survival for patients with prostate cancer. Activation of small GTPases such as Ras and Arf1 is a critical component of the signaling pathways for most of the receptors shown to be upregulated in advanced prostate cancer...
August 23, 2017: Journal of Experimental & Clinical Cancer Research: CR
https://www.readbyqxmd.com/read/28827413/differential-regulation-of-pro-inflammatory-cytokine-signalling-by-ptps-in-pancreatic-%C3%AE-cells
#14
William J Stanley, Prerak M Trivedi, Andrew P Sutherland, Helen Thomas, Esteban N Gurzov
Type 1 diabetes (T1D) is characterized by the destruction of insulin-producing β-cells by immune cells in the pancreas. Pro-inflammatory including TNF-α, IFN-γ and IL-1β are released in the islet during the autoimmune assault and signal in β-cells through phosphorylation cascades, resulting in pro-apoptotic gene expression and eventually β-cell death. Protein tyrosine phosphatases (PTPs) are a family of enzymes that regulate phosphorylative signalling, and are associated with the development of T1D. Here, we observed expression of PTPN6 and PTPN1 in human islets and islets from non-obese diabetic (NOD) mice...
August 21, 2017: Journal of Molecular Endocrinology
https://www.readbyqxmd.com/read/28826228/carbon-monoxide-inhibits-islet-apoptosis-via-induction-of-autophagy
#15
Do-Sung Kim, Lili Song, Jingjing Wang, Hongju Wu, Wenyu Gou, Wanxing Cui, Jae-Sung Kim, Hongjun Wang
AIM: Carbon monoxide (CO) functions as a therapeutic molecule in various disease models because of its anti-inflammatory and anti-apoptotic properties. We investigated the capacity of CO to reduce hypoxia-induced islet cell death and dysfunction in human and mouse models. RESULTS: Culturing islets in CO-saturated medium protected them from hypoxia-induced apoptosis, and preserved β cell function by suppressing expression of pro-apoptotic (Bim, PARP, Cas-3), pro-inflammatory (TNF-α), and ER stress (glucose-regulated protein 94, grp94, CHOP) proteins...
August 21, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/28810829/blocking-il-10-signalling-at-the-time-of-immunization-does-not-increase-unwanted-side-effects-in-mice
#16
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
#17
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
#18
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
#19
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
#20
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...
October 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
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