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https://www.readbyqxmd.com/read/27917914/t-cells-mediate-autoantibody-induced-cutaneous-inflammation-and-blistering-in-epidermolysis-bullosa-acquisita
#1
Katja Bieber, Mareike Witte, Shijie Sun, Jennifer E Hundt, Kathrin Kalies, Sören Dräger, Anika Kasprick, Trix Twelkmeyer, Rudolf A Manz, Peter König, Jörg Köhl, Detlef Zillikens, Ralf J Ludwig
T cells are key players in autoimmune diseases by supporting the production of autoantibodies. However, their contribution to the effector phase of antibody-mediated autoimmune dermatoses, i.e., tissue injury and inflammation of the skin, has not been investigated. In this paper, we demonstrate that T cells amplify the development of autoantibody-induced tissue injury in a prototypical, organ-specific autoimmune disease, namely epidermolysis bullosa acquisita (EBA) - characterized and caused by autoantibodies targeting type VII collagen...
December 5, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27917263/changes-in-cellular-proliferation-and-plasma-products-are-associated-with-liver-failure
#2
Juliana Gil Melgaço, Frederico Marianetti Soriani, Pedro Henrique Ferreira Sucupira, Leonardo Assaf Pinheiro, Yasmine Rangel Vieira, Jaqueline Mendes de Oliveira, Lia Laura Lewis-Ximenez, Cristina Carvalho Vianna Araújo, Lúcio Filgueiras Pacheco-Moreira, Gustavo Batista Menezes, Oswaldo Gonçalves Cruz, Claudia Lamarca Vitral, Marcelo Alves Pinto
AIM: To study the differences in immune response and cytokine profile between acute liver failure and self-limited acute hepatitis. METHODS: Forty-six patients with self-limited acute hepatitis (AH), sixteen patients with acute liver failure (ALF), and twenty-two healthy subjects were involved in this study. The inflammatory and anti-inflammatory products in plasma samples were quantified using commercial enzyme-linked immunoassays and quantitative real-time PCR...
November 18, 2016: World Journal of Hepatology
https://www.readbyqxmd.com/read/27912146/inosine-acedoben-dimepranol-promotes-an-early-and-sustained-increase-in-the-natural-killer-cell-component-of-circulating-lymphocytes-a-clinical-trial-supporting-anti-viral-indications
#3
S Rumel Ahmed, Amy S Newman, James O'Daly, Sean Duffy, Gillian Grafton, Catherine A Brady, S John Curnow, Nicholas M Barnes, John Gordon
Inosine Acedoben Dimepranol (IAD), licensed for the treatment of cell-mediated immune deficiencies associated with viral infections, has been reported to impact a variety of immune parameters both in vitro and in vivo. Here we report the results from a clinical trial where multiple lymphocyte subsets - CD19+ B cells, CD3+ T cells, CD4+ T-helper cells, FoxP3(hi)/CD25(hi)/CD127(lo) regulatory T cells (Tregs), CD3-/CD56+ NK cells, and CD3+/CD56+ NKT cells - were, together with serum immunoglobulins and IgG subclasses, followed during 14days of IAD administration to ten healthy volunteers; these selected from 27 individuals pre-screened in vitro for their capacity to respond to IAD as gauged by increases in the percentage of Treg and/or NKT cells arising in PHA-stimulated cultures...
November 29, 2016: International Immunopharmacology
https://www.readbyqxmd.com/read/27911410/experimental-infection-with-listeria-monocytogenes-as-a-model-for-studying-host-interferon-%C3%AE-responses
#4
Jeeyoon Jennifer Ahn, Thirumahal Selvanantham, Monan Angela Zhang, Thierry Mallevaey, Shannon E Dunn
L. monocytogenes is a gram-positive bacterium that is a cause of food borne disease in humans. Experimental infection of mice with this pathogen has been highly informative on the role of innate and adaptive immune cells and specific cytokines in host immunity against intracellular pathogens. Production of IFN-γ by innate cells during sublethal infection with L. monocytogenes is important for activating macrophages and early control of the pathogen(1-3). In addition, IFN-γ production by adaptive memory lymphocytes is important for priming the activation of innate cells upon reinfection(4)...
November 16, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27906831/bos-is-associated-with-increased-cytotoxic-pro-inflammatory-cd8-t-nkt-like-and-nk-cells-in-the-small-airways
#5
Greg Hodge, Sandra Hodge, Aeneas Yeo, Phan Nguyen, Emily Hopkins, Holmes-Liew Cl, Paul N Reynolds, Mark Holmes
BACKGROUND: Immunosuppression therapy following lung transplantation fails to prevent bronchiolitis obliterans syndrome (BOS) in many patients, primarily a disease of the small airways. We have reported that BOS is associated with a lack of suppression of cytotoxic mediators, and pro-inflammatory cytokines, in peripheral blood T, NKT-like (particularly CD8+) and NK cells. We also showed a loss of glucocorticoid receptor (GCR) in pro-inflammatory lymphocytes following transplant. It is unknown whether these pro-inflammatory lymphocytes target the small and/or large airways in BOS...
December 1, 2016: Transplantation
https://www.readbyqxmd.com/read/27905482/pharmacologic-modulation-of-ror%C3%AE-t-translates-to-efficacy-in-preclinical-and-translational-models-of-psoriasis-and-inflammatory-arthritis
#6
Xiaohua Xue, Pejman Soroosh, Aimee De Leon-Tabaldo, Rosa Luna-Roman, Marciano Sablad, Natasha Rozenkrants, Jingxue Yu, Glenda Castro, Homayon Banie, Wai-Ping Fung-Leung, Luis Santamaria-Babi, Thomas Schlueter, Michael Albers, Kristi Leonard, Alison L Budelsky, Anne M Fourie
The IL-23/IL-17 pathway is implicated in autoimmune diseases, particularly psoriasis, where biologics targeting IL-23 and IL-17 have shown significant clinical efficacy. Retinoid-related orphan nuclear receptor gamma t (RORγt) is required for Th17 differentiation and IL-17 production in adaptive and innate immune cells. We identified JNJ-54271074, a potent and highly-selective RORγt inverse agonist, which dose-dependently inhibited RORγt-driven transcription, decreased co-activator binding and promoted interaction with co-repressor protein...
December 1, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27904959/differential-pulmonic-nk-and-nkt-cell-responses-in-schistosoma-japonicum-infected-mice
#7
Hefei Cha, Wenjuan Qin, Quan Yang, Hongyan Xie, Jiale Qu, Mei Wang, Daixiong Chen, Fang Wang, Nuo Dong, Longhua Chen, Jun Huang
Natural killer cells (NK cells) and natural killer T cells (NKT cells) play a role in anti-infection, anti-tumor, transplantation immunity, and autoimmune regulation. However, the role of NK and NKT cells during Schistosoma japonicum (S. japonicum) infection has not been widely reported, especially regarding lung infections. The aim of this study was to research the NK and NKT cell response to S. japonicum infection in the lungs of mice. Using immunofluorescent histological analysis, NK and NKT cells were found near pulmonary granulomas...
November 30, 2016: Parasitology Research
https://www.readbyqxmd.com/read/27897246/rapid-control-of-pandemic-h1n1-influenza-by-targeting-nkt-cells
#8
Bianca L Artiaga, Guan Yang, Tarun E Hutchinson, Julia C Loeb, Jürgen A Richt, John A Lednicky, Shahram Salek-Ardakani, John P Driver
Swine influenza A viruses (IAV) are a major cause of respiratory disease in pigs and humans. Currently approved anti-influenza therapies directly target the virus, but these approaches are losing effectiveness as new viral strains quickly develop drug resistance. To over come this challenge, there is an urgent need for more effective antiviral drugs. Here we tested the anti-influenza efficacy of the invariant natural killer T (NKT) cell superagonist, α-galactosylceramide (α-GalCer), which stimulates a wide array of anti-viral immune responses...
November 29, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27892871/phenotypic-modulation-of-porcine-cd14-monocytes-natural-killer-natural-killer-t-cells-and-cd8%C3%AE-%C3%AE-t-cell-subsets-by-an-antibody-derived-killer-peptide-kp
#9
Luca Ferrari, Paolo Borghetti, Giulia Ferrarini, Elena De Angelis, Elena Canelli, Giulia Ogno, Alessia Catella, Tecla Ciociola, Walter Magliani, Paolo Martelli
An engineered killer peptide (KP) based on a recombinant anti-idiotypic antibody representing the functional image of a yeast killer toxin (KT) was demonstrated to mediate antimicrobial effects against fungi and viruses. KP binds to murine dendritic cells and macrophages and up-regulate co-receptor expression, thus sustaining CD4+ lymphocyte activation. No immunological data are available in domestic animals thus KP-induced immunomodulation was evaluated in porcine monocyte and lymphocyte subsets. PBMC from healthy adult pigs were stimulated with KP or a scramble peptide (SP), or kept unstimulated for 24, 48 and 72h, and subsequently analyzed by flow cytometry...
September 14, 2016: Research in Veterinary Science
https://www.readbyqxmd.com/read/27891589/critical-roles-of-conventional-dendritic-cells-in-promoting-t-cell-dependent-hepatitis-through-regulating-nkt-cells
#10
Jingya Wang, Xueting Cao, Jiliang Zhao, Huiyuan Zhao, Jun Wei, Qiuying Li, Xiaofei Qi, Zishan Yang, Li Wang, Hongru Zhang, Li Bai, Zhenzhou Wu, Liqing Zhao, Zhangyong Hong, Zhinan Yin
Dendritic cells (DC) play critical roles in initiating and regulating the innate immunity as well as the adaptive immune responses. However, the role of conventional dendritic cells (cDC) in Con A-induced fulminant hepatitis is unknown. In this study, we demonstrated that depletion of cDC using either CD11c-DTR Tg mice or anti-CD11c antibody significantly reduced the severity of liver injury, indicating a detrimental role of cDC in Con A-induced hepatitis. We further elucidated the pathological role of cDC through being the critical source of IL-12, which induced the secretion of IFN-γ by NKT cells...
November 28, 2016: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/27891502/diacylglycerol-kinases-in-t-cell-tolerance-and-effector-function
#11
REVIEW
Shelley S Chen, Zhiming Hu, Xiao-Ping Zhong
Diacylglycerol kinases (DGKs) are a family of enzymes that regulate the relative levels of diacylglycerol (DAG) and phosphatidic acid (PA) in cells by phosphorylating DAG to produce PA. Both DAG and PA are important second messengers cascading T cell receptor (TCR) signal by recruiting multiple effector molecules, such as RasGRP1, PKCθ, and mTOR. Studies have revealed important physiological functions of DGKs in the regulation of receptor signaling and the development and activation of immune cells. In this review, we will focus on recent progresses in our understanding of two DGK isoforms, α and ζ, in CD8 T effector and memory cell differentiation, regulatory T cell development and function, and invariant NKT cell development and effector lineage differentiation...
2016: Frontiers in Cell and Developmental Biology
https://www.readbyqxmd.com/read/27891126/the-ly49e-receptor-inhibits-the-immune-control-of-acute-trypanosoma-cruzi-infection
#12
Jessica Filtjens, Nicolas Coltel, Sabrina Cencig, Sylvie Taveirne, Els Van Ammel, Aline Van Acker, Tessa Kerre, Patrick Matthys, Tom Taghon, Bart Vandekerckhove, Yves Carlier, Carine Truyens, Georges Leclercq
The protozoan parasite Trypanosoma cruzi circulates in the blood upon infection and invades various cells. Parasites intensively multiply during the acute phase of infection and persist lifelong at low levels in tissues and blood during the chronic phase. Natural killer (NK) and NKT cells play an important role in the immune control of T. cruzi infection, mainly by releasing the cytokine IFN-γ that activates the microbicidal action of macrophages and other cells and shapes a protective type 1 immune response...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27875974/nanoparticle-systems-modulating-myeloid-derived-suppressor-cells-for-cancer-immunotherapy
#13
Avia Wilkerson, Julian Kim, Alex Y Huang, Mei Zhang
Myeloid-derived suppressor cells (MDSCs) are a heterogeneous population of immature myeloid cells that are preferentially expanded in cancer. They arise from myeloid progenitor cells that do not differentiate into mature dendritic cells (DCs), granulocytes, or macrophages, and are rather thought to play a pivotal role in immune escape and cancer progression. MDSCs are characterized by the ability to suppress T cell proliferation and cytotoxicity, inhibit natural killer T (NKT) cell activation, and induce the differentiation and expansion of regulatory T cells (Treg)...
November 22, 2016: Current Topics in Medicinal Chemistry
https://www.readbyqxmd.com/read/27869818/tcr%C3%AE-tcr%C3%AE-pairing-controls-recognition-of-cd1d-and-directs-the-development-of-adipose-nkt-cells
#14
Joshua A Vieth, Joy Das, Fanomezana M Ranaivoson, Davide Comoletti, Lisa K Denzin, Derek B Sant'Angelo
The interaction between the T cell antigen receptor (TCR) expressed by natural killer T cells (NKT cells) and the antigen-presenting molecule CD1d is distinct from interactions between the TCR and major histocompatibility complex (MHC). Our molecular modeling suggested that a hydrophobic patch created after TCRα-TCRβ pairing has a role in maintaining the conformation of the NKT cell TCR. Disruption of this patch ablated recognition of CD1d by the NKT cell TCR but not interactions of the TCR with MHC. Partial disruption of the patch, while permissive to the recognition of CD1d, significantly altered NKT cell development, which resulted in the selective accumulation of adipose-tissue-resident NKT cells...
November 21, 2016: Nature Immunology
https://www.readbyqxmd.com/read/27863436/chemotherapy-plus-dendritic-cells-co-cultured-with-cytokine-induced-killer-cells-versus-chemotherapy-alone-to-treat-advanced-non-small-cell-lung-cancer-a-meta-analysis
#15
Cuiling Zhou, Donglan Liu, Jie Li, Huanhuan Sun, Xiaobin Zheng, Shuncong Wang, Guobin Hong, Saradhi Mallampati, Hongliu Sun, Xiuling Zhou, Zhibin Cheng, Hongyu Zhang, Haiqing Ma
This study was aimed to investigate the efficacy and safety of the combination treatment of dendritic cells co-cultured with cytokine-induced killer cells and chemotherapy for patients with advanced non-small-cell lung cancer (NSCLC). Literatures were searched from the Cochrane Library Central, PubMed, Web of Science and EMBASE. The primary endpoint of interest was overall survival (OS), and secondary endpoints were disease control rate (DCR) and progression free survival (PFS). Finally 7 trials published between January 2005 and March 2016 met inclusion criteria and totally 610 patients were enrolled...
November 16, 2016: Oncotarget
https://www.readbyqxmd.com/read/27858101/a-novel-three-dimensional-heterotypic-spheroid-model-for-the-assessment-of-the-activity-of-cancer-immunotherapy-agents
#16
Sylvia Herter, Laura Morra, Ramona Schlenker, Jitka Sulcova, Linda Fahrni, Inja Waldhauer, Steffi Lehmann, Timo Reisländer, Irina Agarkova, Jens M Kelm, Christian Klein, Pablo Umana, Marina Bacac
The complexity of the tumor microenvironment is difficult to mimic in vitro, particularly regarding tumor-host interactions. To enable better assessment of cancer immunotherapy agents in vitro, we developed a three-dimensional (3D) heterotypic spheroid model composed of tumor cells, fibroblasts, and immune cells. Drug targeting, efficient stimulation of immune cell infiltration, and specific elimination of tumor or fibroblast spheroid areas were demonstrated following treatment with a novel immunocytokine (interleukin-2 variant; IgG-IL2v) and tumor- or fibroblast-targeted T cell bispecific antibody (TCB)...
November 17, 2016: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/27848181/characterization-of-circulating-cd4-cd8-double-positive-and-cd4-cd8-double-negative-t-lymphocyte-in-children-with-%C3%AE-thalassemia-major
#17
Asmaa M Zahran, Khaled Saad, Khalid I Elsayh, Mohamd A Alblihed
: Infectious complications represent the second most common cause of mortality and a major cause of morbidity in β-thalassemia major (BTM), with a prevalence of 12-13%. The data on unconventional T-lymphocyte subsets in BTM children are limited. The aim of the present study was to investigate and evaluate phenotypic alterations in CD4(+)CD8(+) double positive (DP), CD4(-) CD8(-) double negative (DN), and natural killer T-lymphocytes (NKT) in BTM children in comparison to healthy controls...
November 15, 2016: International Journal of Hematology
https://www.readbyqxmd.com/read/27847409/effect-of-interleukin-15-on-cd11b-cd54-and-cd62l-expression-on-natural-killer-cell-and-natural-killer-t-like-cells-in-systemic-lupus-erythematosus
#18
Syh-Jae Lin, Ji-Yih Chen, Ming-Ling Kuo, Hsiu-Shan Hsiao, Pei-Tzu Lee, Jing-Long Huang
Adhesion molecules may play an important role in systemic lupus erythematosus (SLE) pathogenesis. We investigated the effect of interleukin- (IL-) 15 on CD11b, CD54, and CD62L expression on natural killer (NK) cells, T cells, and CD56(+)CD3(+) NKT-like cells from SLE subjects and healthy controls. SLE patients had decreased circulating NK cells and NKT-like cells compared to controls. NK cells from SLE patients showed higher CD11b and CD62L expression compared to controls. IL-15 enhanced CD11b and CD54 but downregulated CD62L expression on NK cells from SLE patients...
2016: Mediators of Inflammation
https://www.readbyqxmd.com/read/27837018/role-of-dendritic-cell-maturation-factors-produced-by-human-invariant-nkt-cells-in-immune-tolerance
#19
Hyeong-Woo Lee, Hyun Bae Jie, Paul L Bollyky, David Sarracino, Tong-Soo Kim, Brian S Wilson
In this study, we used the culture supernatant of iNKT cells to identify human myeloid DC maturation factors produced by human CD4(+) iNKT cells. S100A8 had a strong maturation effect. Notably, the recombinant S100A8 protein displayed properties of DC maturation functioning, and the induction of DC differentiation by both the purified and the recombinant protein were blocked by anti-S100A8 and anti-TLR-4 mAbs. DC differentiation induced by anti-major histocompatibility complex class II/CD1d Ab, S100A8, or both was qualitatively indistinguishable from that induced by the coculture of DCs and iNKT cells or via culture supplementation with supernatants from activated CD4(+) iNKT cells...
November 11, 2016: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/27836070/erratum-to-quantitative-defects-in-invariant-nkt-cells-and-tlr-responses-in-patients-with-hyper-ige-syndrome-allergol-immunopathol-madr-43-6-2015-553-561
#20
S Gutierrez-Hincapié, C E Muskus-López, C J Montoya, J L Franco-Restrepo, C M Trujillo-Vargas
No abstract text is available yet for this article.
November 2016: Allergologia et Immunopathologia
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