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https://www.readbyqxmd.com/read/28338767/decreased-cd1d-level-is-associated-with-cd86-over-expression-in-b-cells-from-systemic-lupus-erythematosus
#1
Fei Liu, Jianjian Ji, Xiujun Li, Xiaojing Li, Jingjing Xu, Huimin Yue, Shuli Zhao, Hongye Fan, Yayi Hou
The disorder of B cells is one of the hallmarks of systemic lupus erythematosus (SLE). The activation state indicated by CD86 of B cells from SLE is well known, while the defect of regulatory B cells mediated by CD1d is also responsible for the process of SLE. In the present study, we focused on the relationship between B cell activation mediated by CD86 and B cell regulatory function mediated by CD1d. Our results showed that the level of CD1d in B cells was decreased during the early stages of B6.MRLlpr SLE mice and imiquimod-treated (IMQ-treated) mice, while the level of CD86 was significantly increased at the late stage...
March 3, 2017: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/28337205/high-interferon-%C3%AE-uniquely-in-v%C3%AE-1-t-cells-correlates-with-markers-of-inflammation-and-axonal-damage-in-early-multiple-sclerosis
#2
Avadhesh Kumar Singh, Lenka Novakova, Markus Axelsson, Clas Malmeström, Henrik Zetterberg, Jan Lycke, Susanna L Cardell
We have identified a population of T lymphocytes in peripheral blood, Vδ1 TCRγδ T lymphocytes, which unexpectedly was uniquely expressing high production of interferon-γ in newly diagnosed, untreated multiple sclerosis (MS) patients. IFN-γ production in this population distinctly correlated to parameters of clinical disease activity, inflammation, and neuronal damage. These Vδ1 T lymphocytes belong to a population of innate T lymphocytes that recognize antigen in the context of CD1d/CD1c and which include reactivity to the myelin glycosphingolipid sulfatide...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28335781/tailored-design-of-nkt-stimulatory-glycolipids-for-polarization-of-immune-responses
#3
REVIEW
Jung-Tung Hung, Jing-Rong Huang, Alice L Yu
Natural killer T (NKT) cell is a distinct population of T lymphocytes that can rapidly release massive amount of Th1 and Th2 cytokines upon the engagement of their T cell receptor with glycolipids presented by CD1d. The secreted cytokines can promote cell-mediated immunity to kill tumor cells and intracellular pathogens, or suppress autoreactive immune cells in autoimmune diseases. Thus, NKT cell is an attractive target for developing new therapeutics to manipulate immune system. The best-known glycolipid to activate NKT cells is α-galactosylceramide (α-GalCer), which has been used as a prototype for designing new NKT stimulatory glycolipids...
March 23, 2017: Journal of Biomedical Science
https://www.readbyqxmd.com/read/28330461/impaired-liver-regeneration-is-associated-with-reduced-cyclin-b1-in-natural-killer-t-cell-deficient-mice
#4
Ami Ben Ya'acov, Hadar Meir, Lydia Zolotaryova, Yaron Ilan, Eyal Shteyer
BACKGROUND: It has been shown that the proportion of natural killer T cells is markedly elevated during liver regeneration and their activation under different conditions can modulate this process. As natural killer T cells and liver injury are central in liver regeneration, elucidating their role is important. METHODS: The aim of the current study is to explore the role of natural killer T cells in impaired liver regeneration. Concanvalin A was injected 4 days before partial hepatectomy to natural killer T cells- deficient mice or to anti CD1d1-treated mice...
March 23, 2017: BMC Gastroenterology
https://www.readbyqxmd.com/read/28296542/the-autophagy-machinery-restrains-inkt-cell-activation-through-cd1d1-internalization
#5
Christian W Keller, Monica Loi, Svenja Ewert, Isaak Quast, Romina Theiler, Monique Gannagé, Christian Münz, Gennaro De Libero, Stefan Freigang, Jan D Lünemann
Invariant natural killer T (iNKT) cells are innate T cells with powerful immune regulatory functions that recognize glycolipid antigens presented by the CD1D protein. While iNKT-cell-activating glycolipids are currently being explored for their efficacy to improve immunotherapy against infectious diseases and cancer, little is known about the mechanisms that control CD1D antigen presentation and iNKT cell activation in vivo. CD1D molecules survey endocytic pathways to bind lipid antigens in MHC class II containing compartments (MIICs) before recycling to the plasma membrane...
March 15, 2017: Autophagy
https://www.readbyqxmd.com/read/28296255/breg-dependent-islet-transplant-tolerance-is-also-nk-cell-dependent
#6
Christian Schuetz, Kang Mi Lee, Ryan Scott, Lisa Kojima, Laura Washburn, Liye Liu, Wei-Hui Liu, Haley Tector, Ji Lei, Heidi Yeh, James Kim, James F Markmann
Immunologic tolerance to solid organ and islet cell grafts has been achieved in various rodent models using antibodies directed at CD45RB and Tim-1. We have shown that this form of tolerance depends on regulatory B-cells. To elucidate further the mechanism by which Bregs induce tolerance we investigated the requirement of NK and NKT cells in this model. To do so, hyperglycemic B6, μMT, Beige or CD1d(-/-) mice received Balb/c islet grafts and treatment with the tolerance inducing regimen consisting of anti-CD45RB and anti -TIM1...
March 10, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28265257/regulatory-b-cells-in-seropositive-myasthenia-gravis-versus-healthy-controls
#7
Md Rezaul Karim, Hong-Yan Zhang, Jiang Yuan, Qiang Sun, Yun-Fu Wang
OBJECTIVE: To find out if the failure in immunotolerance of myasthenia gravis (MG) is a possible aspect of deduction in Breg cells and to characterize B cell subsets in MG. METHODS: Flow cytometry detection and enzyme-linked immunosorbent assays in peripheral blood films of 10 MG patients and 10 healthy controls (HCs) were performed after isolation of B cells. The CD19(+)CD5(+)CD1d(+) Breg cells percentages were measured to complement a B cell phenotype assay and frequencies of B cell subsets...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28258199/id2-collaborates-with-id3-to-suppress-invariant-nkt-and-innate-like-tumors
#8
Jia Li, Sumedha Roy, Young-Mi Kim, Shibo Li, Baojun Zhang, Cassandra Love, Anupama Reddy, Deepthi Rajagopalan, Sandeep Dave, Anna Mae Diehl, Yuan Zhuang
Inhibitor of DNA binding (Id) proteins, including Id1-4, are transcriptional regulators involved in promoting cell proliferation and survival in various cell types. Although upregulation of Id proteins is associated with a broad spectrum of tumors, recent studies have identified that Id3 plays a tumor-suppressor role in the development of Burkitt's lymphoma in humans and hepatosplenic T cell lymphomas in mice. In this article, we report rapid lymphoma development in Id2/Id3 double-knockout mice that is caused by unchecked expansion of invariant NKT (iNKT) cells or a unique subset of innate-like CD1d-independent T cells...
March 3, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28245613/from-lysosomal-storage-diseases-to-nkt-cell-activation-and-back
#9
REVIEW
Cátia S Pereira, Helena Ribeiro, M Fatima Macedo
Lysosomal storage diseases (LSDs) are inherited metabolic disorders characterized by the accumulation of different types of substrates in the lysosome. With a multisystemic involvement, LSDs often present a very broad clinical spectrum. In many LSDs, alterations of the immune system were described. Special emphasis was given to Natural Killer T (NKT) cells, a population of lipid-specific T cells that is activated by lipid antigens bound to CD1d (cluster of differentiation 1 d) molecules at the surface of antigen-presenting cells...
February 25, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28243231/il-10-producing-cd1d-hi-cd5-regulatory-b-cells-may-play-a-critical-role-in-modulating-immune-homeostasis-in-silicosis-patients
#10
Ying Chen, Chao Li, Yiping Lu, Huiying Zhuang, Weijia Gu, Bo Liu, Fangwei Liu, Jinkai Sun, Bo Yan, Dong Weng, Jie Chen
Silicosis is characterized by chronic lung inflammation and fibrosis, which are extremely harmful to human health. The pathogenesis of silicosis involves uncontrolled immune processes. Evidence supports that regulatory B cells (Bregs) produce negative regulatory cytokines, such as IL-10, which can negatively regulate immune responses in inflammation and autoimmune diseases. Our previous study found that IL-10-producing B cells were involved in the development of silica-induced lung inflammation and fibrosis of mice...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28219981/the-role-of-natural-killer-t-cells-in-a-mouse-model-with-spontaneous-bile-duct-inflammation
#11
Elisabeth Schrumpf, Xiaojun Jiang, Sebastian Zeissig, Marion J Pollheimer, Jarl Andreas Anmarkrud, Corey Tan, Mark A Exley, Tom H Karlsen, Richard S Blumberg, Espen Melum
Natural killer T (NKT) cells are activated by lipid antigens presented by CD1d molecules and represent a major lymphocyte subset of the liver. NODc3c4 mice spontaneously develop biliary inflammation in extra- and intrahepatic bile ducts. We demonstrated by flow cytometry that invariant NKT (iNKT) cells were more abundant in the thymus, spleen, and liver of NODc3c4 mice compared to NOD mice. iNKT cells in NODc3c4 mice displayed an activated phenotype. Further, NOD and NODCd1d(-/-) mice were irradiated and injected with NODc3c4 bone marrow, and injection of NODc3c4 bone marrow resulted in biliary infiltrates independently of CD1d expression in recipient mice...
February 2017: Physiological Reports
https://www.readbyqxmd.com/read/28212574/the-combined-action-of-mast-cell-chymase-tryptase-and-carboxypeptidase-a3-protects-against-melanoma-colonization-of-the-lung
#12
Mirjana Grujic, Aida Paivandy, Ann-Marie Gustafson, Allan R Thomsen, Helena Öhrvik, Gunnar Pejler
Mast cell secretory granules are densely packed with various bioactive mediators including proteases of chymase, tryptase and CPA3 type. Previous studies have indicated that mast cells can affect the outcome of melanoma but the contribution of the mast cell granule proteases to such effects has not been clear. Here we addressed this issue by assessing mice lacking either the chymase Mcpt4, the tryptase Mcpt6 or carboxypeptidase A3 (Cpa3), as well as mice simultaneously lacking all three proteases, in a model of melanoma dissemination from blood to the lung...
February 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28198713/cd1d-restricted-natural-killer-t-cells-are-preserved-in-indian-long-term-non-progressors-ltnps
#13
Dharmendra Singh, Manisha Ghate, Sheela Godbole, Smita Kulkarni, Madhuri Thakar
BACKGROUND: Natural killer T (NKT) cells act as a bridge between innate and adaptive immune responses. Limited information is available regarding the role of NKT cells in the HIV disease progression especially HIV-1 C infection. METHODOLOGY: NKT cells were characterized for their frequency and the activation, aging, exhaustion status and their proliferation ability in 32 long term non progressors (LTNPs), 40 progressors, 18 patients before and after suppressive cART along with 35 HIV-1 negative subjects using multicolor flowcytometry...
February 14, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28193627/adoptive-transfer-of-invariant-nkt-cells-as-immunotherapy-for-advanced-melanoma-a-phase-1-clinical-trial
#14
Mark A Exley, Philip Friedlander, Nadia Alatrakchi, Lianne Vriend, Simon C Yue, Tetsuro Sasada, Wanyong Zang, Yo Mizukami, Justice Clark, David Nemer, Ken LeClair, Christine Canning, Heather Daley, Glenn Dranoff, Anita Giobbie-Hurder, F Stephen Hodi, Jerome Ritz, Steven P Balk
PURPOSE: Invariant NKT cells (iNKT) are innate-like CD1d-restricted T cells with immunoregulatory activity in diseases including cancer. iNKT from advanced cancer patients can have reversible defects including IFNγ production, and iNKT IFNγ production may stratify for survival. Previous clinical trials using iNKT cell activating ligand α-galactosylceramide have shown responses. Therefore, a phase 1 clinical trial was performed of autologous in vitro expanded iNKT cells in stage IIIB-IV melanoma...
February 13, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28166809/b-cells-interactions-in-lipid-immune-responses-implications-in-atherosclerotic-disease
#15
REVIEW
Laura C Echeverri Tirado, Lina M Yassin
Atherosclerosis is considered as an inflammatory and chronic disorder with an important immunologic component, which underlies the majority of cardiovascular diseases; condition that belongs to a group of noncommunicable diseases that to date and despite of prevention and treatment approaches, they remain as the main cause of death worldwide, with 17.5 million of deaths every year. The impact of lipids in human health and disease is taking center stage in research, due to lipotoxicity explained by elevated concentration of circulating lipids, in addition to altered adipose tissue metabolism, and aberrant intracellular signaling...
February 6, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28127028/natural-killer-t-cells-in-atherosclerosis
#16
REVIEW
Godfrey S Getz, Catherine A Reardon
Atherosclerosis is a chronic inflammatory disorder that develops in response to hyperlipidaemia. Cells from both the innate and adaptive immune systems contribute to the development of atherosclerotic lesions. The role of natural killer T (NKT) cells in response to microbial pathogens and inflammatory disorders such as atherosclerosis has received increasing attention in the past 10-15 years. Endogenous self-lipid antigens and exogenous lipid antigens, including those on microorganisms can activate NKT cells...
January 27, 2017: Nature Reviews. Cardiology
https://www.readbyqxmd.com/read/28115591/type-ii-nkt-cells-and-their-emerging-role-in-health-and-disease
#17
REVIEW
Madhav V Dhodapkar, Vipin Kumar
NKT cells recognize lipid Ags presented by a class I MHC-like molecule CD1d, a member of the CD1 family. Although most initial studies on NKT cells focused on a subset with semi-invariant TCR termed invariant NKT cells, the majority of CD1d-restricted lipid-reactive human T cells express diverse TCRs and are termed type II NKT cells. These cells constitute a distinct population of circulating and tissue-resident effector T cells with immune-regulatory properties. They react to a growing list of self- as well as non-self-lipid ligands, and share some properties with both invariant NKT and conventional T cells...
February 1, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28110075/tlr9-mediated-regulatory-b10-cell-amplification-following-sub-total-body-irradiation-implications-in-attenuating-eae
#18
Jinsheng Hong, Jie Fang, Ruilong Lan, Qi Tan, Yeping Tian, Mei Zhang, Paul Okunieff, Lurong Zhang, Jianhua Lin, Deping Han
Autoimmunity and inflammation are controlled in part by regulatory B (Breg) cells, including the recently identified IL-10-competent B10 cell subset that represents 1%-3% of mouse spleen B cells. In this study, the influence of irradiation on Breg/B10 cell generation and IL-10 production mediated by TLR9 signaling pathways was investigated. Spleen and peritoneal cavity Breg/B10 cell frequencies were significantly expanded three weeks after sub-total body irradiation (sub-TBI, 5Gy or 10Gy) in adult male wild type (WT) C57BL/6(B6) mice but not in TLR9(-/-) mice...
March 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28104122/role-of-natural-killer-cells-in-the-innate-immune-system-after-intraportal-islet-transplantation-in-mice
#19
Y Saeki, K Ishiyama, N Ishida, Y Tanaka, H Ohdan
BACKGROUND: Both liver natural killer (NK) and NK T cells of the innate immune system play a crucial role in islet graft loss after intraportal islet transplantation, although a relationship between NK and NK T cells in islet loss has not been proven. In this study, we investigated the role of NK cells in the innate immune system in islet graft loss after intraportal islet transplantation. METHODS: To investigate the involvement of liver NK cells in islet destruction, we assessed the differences in graft survival after intraportal islet transplantation between CD1d(-/-) diabetic mice and NK cell-depleted CD1d(-/-) diabetic mice...
January 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28095739/expression-and-localization-of-fibroblast-growth-factor-fgf-23-and-klotho-in-the-spleen-its-physiological-and-functional-implications
#20
Yuri Nakashima, Toru Mima, Mitsuru Yashiro, Tomohiro Sonou, Masaki Ohya, Asuka Masumoto, Shintaro Yamanaka, Daisuke Koreeda, Koichi Tatsuta, Yoshiyuki Hanba, Mari Moribata, Shigeo Negi, Takashi Shigematsu
The FGF23-Klotho signaling axis is known to exert anti-aging effects via calcium-phosphorus metabolism. In mice deficient in FGF23-Klotho signaling, however, the number of splenocytes is reduced. FGF23 is expressed in both bone and spleen, with regulation of its production differing in these organs. As FGF23-Klotho signaling may play an immunological role in the spleen, splenocytes in male C57BL/6J mice were assayed for expression of Klotho or FGF23 by flow cytometry and immunohistochemistry. Cells that expressed Klotho included CD45R/B220(+) CD21/CD35(+) CD1d(+) CD43(-) marginal zone B cells...
January 18, 2017: Growth Factors
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