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https://www.readbyqxmd.com/read/28099879/high-dose-baff-receptor-specific-mab-sirna-conjugate-generates-fas-expressing-b-cells-in-lymph-nodes-and-high-affinity-serum-autoantibody-in-a-myasthenia-mouse-model
#1
Naazneen Ibtehaj, Karl E Anderson, Ruksana Huda
We investigated potential therapeutic effects of a conjugate of BAFF receptor specific- monoclonal antibody and short interference RNA in a mouse model of myasthenia gravis (EAMG). Whereas high-dose siRNA conjugate resulted in significant accumulation of Fas expressing CD19+/ B220+ cells and concurrent expression of type 1 interferon in lymph nodes, low-dose conjugate did not induce FAS expression but caused marked BAFF receptor deficiency in lymph nodes that was further associated with improved MG symptoms...
January 15, 2017: Clinical Immunology: the Official Journal of the Clinical Immunology Society
https://www.readbyqxmd.com/read/28095856/baff-index-and-cxcl13-levels-in-the-cerebrospinal-fluid-associate-respectively-with-intrathecal-igg-synthesis-and-cortical-atrophy-in-multiple-sclerosis-at-clinical-onset
#2
M Puthenparampil, L Federle, S Miante, A Zito, E Toffanin, S Ruggero, M Ermani, S Pravato, D Poggiali, P Perini, F Rinaldi, P Gallo
BACKGROUND: B lymphocytes are thought to play a relevant role in multiple sclerosis (MS) pathology. The in vivo analysis of intrathecally produced B cell-related cytokines may help to clarify the mechanisms of B cell recruitment and immunoglobulin production within the central nervous system (CNS) in MS. METHODS: Paired cerebrospinal fluid (CSF) and serum specimens from 40 clinically isolated syndrome suggestive of MS or early-onset relapsing-remitting MS patients (CIS/eRRMS) and 17 healthy controls (HC) were analyzed for the intrathecal synthesis of IgG (quantitative formulae and IgG oligoclonal bands, IgGOB), CXCL13, BAFF, and IL-21...
January 17, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28089248/triggering-receptor-expressed-on-myeloid-cells-1-trem-1-deficiency-augments-baff-production-to-promote-lupus-progression
#3
Chi-Jui Liu, Chang-Youh Tsai, Ssu-Hsuan Chiang, Shye-Jye Tang, Nien-Jung Chen, Tak Wah Mak, Guang-Huan Sun, Kuang-Hui Sun
Sensing of nucleic acids by pattern recognition receptors is the key for the initiation and development of systemic lupus erythematosus (SLE). Triggering receptor expressed on myeloid cells-1 (TREM-1) is a novel innate immune receptor, which can amplify Toll-like receptor (TLR)-induced inflammatory responses. Although patients with lupus exhibit increased serum levels of soluble TREM-1 (sTREM-1), the role of TREM-1 in SLE remains unknown. In current study, we found serum sTREM-1 levels were significantly increased in lupus patients and positively correlated with disease activity...
January 11, 2017: Journal of Autoimmunity
https://www.readbyqxmd.com/read/28087387/orbital-fibroblasts-of-graves-orbitopathy-stimulated-with-proinflammatory-cytokines-promote-b-cell-survival-by-secreting-baff
#4
Fen Tang, Xiaoqing Chen, Yuxiang Mao, Shangtao Wan, Siming Ai, Huasheng Yang, Guangming Liu, Yusha Zou, Miaoli Lin, Liang Dan
The success of rituximab for the treatment of active Graves' orbitopathy (GO) suggests that B cells play a critical role in intraorbital inflammation. B cell activating factor (BAFF) and its homolog a proliferation-inducing ligand (APRIL) are critical for B cell survival. However, the contribution of BAFF/APRIL to GO remains unclear. We sought to determine the role of BAFF/APRIL in the orbits of GO, and found that BAFF was markedly upregulated, while APRIL was not. Additionally, cultured GO orbital fibroblasts (GO-OFs)(2) expressing BAFF were induced to produce a large amount of BAFF...
January 10, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28079103/erratum-antigen-affinity-controls-pre-germinal-center-b-cell-selection-by-promoting-mcl-1-induction-through-baff-receptor-signaling
#5
Felix M Wensveen, Erik Slinger, Martijn Ha van Attekum, Robert Brink, Eric Eldering
No abstract text is available yet for this article.
January 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28070614/outgroup-alignment-and-modelling-improvements-indicate-that-two-tnfsf13-like-genes-existed-in-the-vertebrate-ancestor
#6
Anthony K Redmond, Rita Pettinello, Helen Dooley
The molecular machinery required for lymphocyte development and differentiation appears to have emerged concomitantly with distinct B- and T-like lymphocyte subsets in the ancestor of all vertebrates. The TNFSF superfamily (TNFSF) members BAFF (TNFSF13/Blys) and APRIL (TNFSF13) are key regulators of B cell development survival, and activation in mammals, but the temporal emergence of these molecules, and their precise relationship to the newly identified TNFSF gene BALM (BAFF and APRIL-like molecule), have not yet been elucidated...
January 9, 2017: Immunogenetics
https://www.readbyqxmd.com/read/28057926/ifn-type-i-and-ii-induce-baff-secretion-from-human-decidual-stromal-cells
#7
Anna-Carin Lundell, Inger Nordström, Kerstin Andersson, Christina Lundqvist, Esbjörn Telemo, Silvia Nava, Helen Kaipe, Anna Rudin
B cell activating factor (BAFF) is a critical cytokine for maturation of immature B cells. In murine lymph nodes, BAFF is mainly produced by podoplanin-expressing stromal cells. We have previously shown that circulating BAFF levels are maximal at birth, and that farmers' children exhibit higher BAFF levels in cord blood than non-farmers' children. Here, we sought to investigate whether maternal-derived decidual stromal cells from placenta secrete BAFF and examine what factors could stimulate this production...
January 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28039405/role-of-baff-in-pulmonary-autoantibody-responses-induced-by-chronic-cigarette-smoke-exposure-in-mice
#8
Mathieu C Morissette, Yang Gao, Pamela Shen, Danya Thayaparan, Jean-Christophe Bérubé, Peter D Paré, Corry-Anke Brandsma, Ke Hao, Yohan Bossé, Rachel Ettinger, Ronald Herbst, Alison A Humbles, Roland Kolbeck, Nanshan Zhong, Rongchang Chen, Martin R Stämpfli
Emerging evidence suggests that autoimmune processes are implicated in the pathogenesis of chronic obstructive pulmonary disease (COPD). In this study, we assessed the expression of B-cell activating factor (BAFF) in smokers, and investigated the functional importance of BAFF in the induction and maintenance of cigarette smoke-induced pulmonary antinuclear antibodies (ANA) and tertiary lymphoid tissues (TLTs) using a preclinical mouse model. We observed that BAFF levels were elevated in smokers and mice exposed to cigarette smoke...
December 2016: Physiological Reports
https://www.readbyqxmd.com/read/28035475/increased-baff-expression-in-nasal-polyps-is-associated-with-local-ige-production-th2-response-and-concomitant-asthma
#9
Dilidaer, Yan Zheng, Zhuofu Liu, Xianting Hu, Jia Zhang, Li Hu, Miaomiao Han, Dehui Wang, Huabin Li
B-cell activating factor of the TNF family is critical for the survival and maturation of B cells and play a role in the pathophysiology of chronic rhinosinusitis with nasal polyps (CRSwNP). In this study, nasal tissues were enrolled from 25 CRSwNP patients (asthmatic, 16; non-asthmatic, 9), 12 CRSsNP patients and ten control subjects, respectively. The immunoreactivity of BAFF, CD20 and CD138 were examined using immunohistochemistry staining. The mRNA expression of BAFF, CD20, εGLT, AID, GATA3 and CRTH2 were examined using real-time RT-PCR...
December 29, 2016: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28031105/-xinfeng-capsule-improves-pulmonary-function-of-rats-with-adjuvant-induced-arthritis-via-regulating-the-expressions-of-autophagy-related-proteins
#10
Lei Wan, Jian Liu, Chuanbing Huang, Xiaojun Zhang, Yali Wang, Yue Sun, Lei Liu
Objective To observe the effect of Xinfeng Capsule (XFC) on autophagy related gene (ATG), microtubule-associated protein 1 light chain 3II (LC3-II), beclin 1 in the rat model of adjuvant-induced arthritis (AA). Methods Rats were divided for four groups: normal control (NC) group, model control (MC) group, leflunomide (LEF) group, and XFC group, with 10 rats in each group. Complete Freund's adjuvant (CFA, 0.1 mL) was injected into the right foot plantar skin of all rats except for the NC group. To enhance the immune response, 0...
January 2017: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/28028945/the-correlation-between-non-hodgkin-lymphoma-and-expression-levels-of-b-cell-activating-factor-and-its-receptors
#11
Xianjuan Shen, Mei Wang, Yuehua Guo, Shaoqing Ju
BACKGROUND: Lymphoma is a malignant tumor of the immune system originating from lymph nodes and extralymphatic tissues. Its occurrence is believed to be associated with various immune cells due to the proliferation and differentiation of lymphocytes during the immune response. It has been found in many studies that B-cell activating factor (BAFF), as a member of the tumor necrosis factor (TNF) superfamily, could specifically activate B lymphocytes and promote their proliferation. OBJECTIVES: To explore correlations between non-Hodgkin lymphoma (NHL) and the expression of BAFF and its receptors in NHL patients...
September 2016: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/28024495/-mechanism-of-regulating-baff-signaling-pathway-by-act1-in-b-cell-lymphoma
#12
Yong-Lun Wang, Xun Min, Xiao-Jun Ge
OBJECTIVE: To explore the mechanism of regulating B cell-activating factor (BAFF) signalling pathway by NF-κB activator 1 (Act1) in B cell lymphoma so as to provide a new thinking for treatment of B cell lymphoma. METHODS: The human B cell lymphoma cell lines including Raji, Daudi and BALL-1 were cultured, when the cells were in logarithmic phase, the RNA was extracted, and the Act1 was amplified by RT-PCR; and pTT5-Act1 expression plasmid was constructed and was transfected into cells; the Act1 was silenced by using Act1 mRNA; the NF-κB signaling pathway protein was detected by Western blot...
December 2016: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/28013554/the-emerging-roles-of-b-cells-as-partners-and-targets-in-periodontitis
#13
Moncef Zouali
Initial studies of periodontal disease suggested that T cell-mediated immunity against oral Gram-negative microorganisms is a key player in the pathogenesis of this inflammatory disease. Recent investigations, however, revealed that B cells are also engaged. Given their chief role in innate-like and adaptive immune responses, B cells could exert protective functions in periodontitis. However, the periodontal bacteria-specific antibody response is generally unable to halt disease progression in affected subjects, suggesting that the antibodies produced could exhibit low anti-bacterial blocking functions or opsonophagocytic potential, and/or unfavorable effects...
December 26, 2016: Autoimmunity
https://www.readbyqxmd.com/read/28012378/systemic-inflammation-before-and-after-antiretroviral-therapy-initiation-as-a-predictor-of-immune-response-among-hiv-infected-individuals-in-manitoba
#14
Quinlan Richert, Adriana Trajtman, Luisa Arroyave, Julia Toews, Marissa Becker, Ken Kasper, Paul McLaren, Zulma Rueda, Yoav Keynan
INTRODUCTION: Despite the life-prolonging effects of Highly Active Antiretroviral Therapy (HAART), persons with HIV are still prone to higher rates of non-AIDS related morbidity (such as heart, kidney, and liver disease) than the general public. This is likely due to chronic immune activation and inflammation that persists in HIV-positive persons despite virological suppression. What remains undetermined, however, is whether a link exists between chronic inflammation/immune activation and suboptimal immune recovery on HAART...
December 21, 2016: Cytokine
https://www.readbyqxmd.com/read/28005265/phase-2-study-of-tabalumab-a-human-anti-b-cell-activating-factor-antibody-with-bortezomib-and-dexamethasone-in-patients-with-previously-treated-multiple-myeloma
#15
Noopur S Raje, Philippe Moreau, Evangelos Terpos, Lotfi Benboubker, Norbert Grząśko, Sarah A Holstein, Albert Oriol, Shang-Yi Huang, Meral Beksac, Kazimierz Kuliczkowski, Datchen F Tai, James E Wooldridge, Ilaria Conti, Christopher J Kaiser, Tuan S Nguyen, Damien M Cronier, Antonio Palumbo
In this double-blind, Phase 2 study, 220 patients with relapsed/refractory multiple myeloma were randomly assigned 1:1:1 to receive placebo (N = 72), tabalumab 100 mg (N = 74), or tabalumab 300 mg (N = 74), each in combination with dexamethasone 20 mg and subcutaneous bortezomib 1·3 mg/m(2) on a 21-day cycle. No significant intergroup differences were observed among primary (median progression-free survival [mPFS]) or secondary efficacy outcomes. The mPFS was 6·6, 7·5 and 7·6 months for the tabalumab 100, 300 mg and placebo groups, respectively (tabalumab 100 mg vs...
December 22, 2016: British Journal of Haematology
https://www.readbyqxmd.com/read/28002731/cholesterol-accumulation-in-cd11c-immune-cells-is-a-causal-and-targetable-factor-in-autoimmune-disease
#16
Ayaka Ito, Cynthia Hong, Kazuhiro Oka, Jon V Salazar, Cody Diehl, Joseph L Witztum, Mercedes Diaz, Antonio Castrillo, Steven J Bensinger, Lawrence Chan, Peter Tontonoz
Liver X receptors (LXRs) are regulators of cholesterol metabolism that also modulate immune responses. Inactivation of LXR α and β in mice leads to autoimmunity; however, how the regulation of cholesterol metabolism contributes to autoimmunity is unclear. Here we found that cholesterol loading of CD11c(+) cells triggered the development of autoimmunity, whereas preventing excess lipid accumulation by promoting cholesterol efflux was therapeutic. LXRβ-deficient mice crossed to the hyperlipidemic ApoE-deficient background or challenged with a high-cholesterol diet developed autoantibodies...
December 20, 2016: Immunity
https://www.readbyqxmd.com/read/27999768/il17-producing-%C3%AE-%C3%AE-t-cells-may-enhance-humoral-immunity-during-pulmonary-pseudomonas-aeruginosa-infection-in-mice
#17
Tingting Pan, Ruoming Tan, Meiling Li, Zhaojun Liu, Xiaoli Wang, Lijun Tian, Jialin Liu, Hongping Qu
The host acquired immune response, especially the humoral immunity, plays key roles in preventing bacterial pneumonia in the lung. Our previous research demonstrated that interleukin 17-producing γδ T cells (IL17-γδ T cells) have a protective effect on the early innate immune response during acute pulmonary Pseudomonas aeruginosa infection. However, whether IL17-γδ T cells also play a role in humoral immunity is unknown. In this study, an acute pulmonary P. aeruginosa infection model was established in wild-type and γδ TCR(-/-) C57BL/6 mice...
2016: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/27995886/-mir-202-contributes-to-sensitizing-mm-cells-to-drug-significantly-via-activing-jnk-sapk-signaling-pathway
#18
Y Zhang, X J Shen, X H Wu, H Cong, H B Ni, S Q Ju, J Y Su
Objective: To explore the role of miR-202 in multiple myeloma (MM) cells, and study the regulation of miR-202 on drug sensitivity of MM cells. Methods: miR-202 and BAFF mRNA levels were detected by real-time PCR. U266 cells were transfected with miR-202-mimics, miR-202-inhibitor, siBAFF and their negative controls. After above treatments, protein levels of Bcl-2 family and MAPK signaling pathway were detected by Western blot analysis, and the proliferation and apoptosis ability of MM cells were examined by WST-1, Annexin V-FLUOS assay, respectively...
November 14, 2016: Zhonghua Xue Ye Xue za Zhi, Zhonghua Xueyexue Zazhi
https://www.readbyqxmd.com/read/27994173/transgenic-overexpression-of-baff-regulates-the-expression-of-immune-related-genes-in-zebrafish-danio-rerio
#19
Li Zhang, Chao Liu, Xin Zhou, Ying Xie, Libo Su, Qi Geng, Binghui Liu, Shufeng Liu
The B-cell activating factor (BAFF) is a member of tumour necrosis factor (TNF) superfamily that specifically regulates B lymphocyte proliferation and survival. Excess BAFF leads to overproduction of antibodies for secretion, anti-dsDNA antibodies and a lupus-like syndrome in mice. To investigate whether transgenic overexpression of the zebrafish BAFF leads to immunoglobulin changes and/or early maturing of the immune system, a Tol2-GFP-2A-BAFF/His recombinant plasmid was constructed by inserting a 2A peptide between the green fluorescent protein (GFP) and BAFF sequences...
December 2016: Journal of Genetics
https://www.readbyqxmd.com/read/27986304/kinetic-analysis-of-changes-in-t-and-b-lymphocytes-after-anti-cd20-treatment-in-renal-pathology
#20
Alexis Sentís, Fritz Diekmann, Arturo Llobell, Noemí de Moner, Gerard Espinosa, Jordi Yagüe, Josep Maria Campistol, Eduard Mirapeix, Manel Juan
INTRODUCTION: The main objective of this study is to describe qualitatively and quantitatively the different immune lymphocyte phenotypes of patients with renal disease after treatment with anti-CD20. MATERIAL AND METHODS: Two cohorts of transplanted and autoimmune kidney patients were compared: (1) Those who began treatment with Rituximab, matched (for sex, age and general clinical parameters) with (2) Non-treated control kidney patients. Different analyses were performed: (A) B-lymphocyte subpopulations; (B) T-cell subpopulations; (C) serum levels of BAFF, APRIL, Rituximab and anti-Rituximab; (D) rs396991 polymorphism of CD16a and at different time points for each type of analysis: (i) at baseline, (ii) day 15, (iii) at three and (iv) six months post-antiCD20...
November 17, 2016: Immunobiology
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