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SLE AND T cells

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https://www.readbyqxmd.com/read/28198144/the-phenolic-fraction-of-extra-virgin-olive-oil-modulates-the-activation-and-the-inflammatory-response-of-t-cells-from-patients-with-systemic-lupus-erythematosus-and-healthy-donors
#1
Marina Aparicio-Soto, Marina Sanchez-Hidalgo, Ana Cárdeno Galván, Jose Manuel Lucena, Francisca Gonzalez-Escribano, Maria Jesus Castillo Palma, Catalina Alarcón-de-la-Lastra
SCOPE: Systemic lupus erythematosus (SLE) is a chronic multiorgan autoimmune disease characterized by immune deregulation, which involves altered T-cell response and imbalance of cytokine production. The phenolic fraction (PE) of extra virgin olive oil (EVOO) possesses anti-inflammatory and immunomodulatory properties and exerts preventive effects in murine models of immune-inflammatory diseases, such as SLE. The present study was designed to determine the in vitro effects of the PE from EVOO on peripheral blood mononuclear cells (PBMC) from inactive patients with SLE and healthy donors...
February 15, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28185859/association-of-irf5-polymorphisms-with-increased-risk-for-systemic-lupus-erythematosus-in-population-of-crete-a-southern-eastern-european-greek-island
#2
M I Zervou, J M Dorschner, Y Ghodke-Puranik, D T Boumpas, T B Niewold, G N Goulielmos
Interferon regulatory factor 5 (IRF5) regulates type I interferon (IFN)-responsive genes, and has been one of the most consistently associated genes with systemic lupus erythematosus (SLE). We sought to investigate whether IRF5 haplotypes are associated with risk for SLE in the genetically homogeneous Greek population of the island of Crete, as well as whether these haplotypes are associated with increased type I IFN. 322 SLE patients and 247 healthy controls from Crete were genotyped for rs2004640, rs3807306, rs10488631 and rs2280714 SNPs of IRF5 gene by using Taqman primer-probe sets...
February 6, 2017: Gene
https://www.readbyqxmd.com/read/28162181/-effect-of-serum-interleukin-21-on-b-cell-secretory-capacity-and-apoptosis-in-patients-with-systemic-lupus-erythematosus
#3
L T Zheng, L D Zhao, C Zhao, Y Zhao, X Zhang, F C Zhang, X F Zeng, F L Tang, X You
Objective: To investigate the secretory capacity and apoptosis of interleukin (IL)-21 induced normal B cells by co-culture with serum from patients with systemic lupus erythematosus (SLE). Methods: Serum from twenty new-onset SLE patients and 20 healthy donors were collected. CD(19)(+) B cells from the normal controls were co-cultured with serum from SLE patients in the presence or absence of IL-21-R-FC(4 μg/ml). Supernatant IgG and IgM concentration were measured by immunoturbidimetric assay on day 5. Supernatant anti-dsDNA level was determined by ELISA...
February 1, 2017: Zhonghua Nei Ke za Zhi [Chinese Journal of Internal Medicine]
https://www.readbyqxmd.com/read/28150814/p-selectin-preserves-immune-tolerance-in-mice-and-is-reduced-in-human-cutaneous-lupus
#4
Rafael González-Tajuelo, Javier Silván, Alicia Pérez-Frías, María de la Fuente-Fernández, Reyes Tejedor, Marina Espartero-Santos, Esther Vicente-Rabaneda, Ángeles Juarranz, Cecilia Muñoz-Calleja, Santos Castañeda, Carlos Gamallo, Ana Urzainqui
Mice deficient in P-Selectin presented altered immunity/tolerance balance. We have observed that the absence of P-Selectin promotes splenomegaly with reduced naïve T cell population, elevated activated/effector T cell subset, increased germinal center B and Tfh populations and high production of autoreactive antibodies. Moreover, 1.5-3-month-old P-selectin KO mice showed reduced IL-10-producing leukocytes in blood and a slightly reduced Treg population in the skin. With aging and, coinciding with disease severity, there is an increase in the IL17(+) circulating and dermal T cell subpopulations and reduction of dermal Treg...
February 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28148586/systemic-lupus-erythematosus
#5
Maliha F Shaikh, Natasha Jordan, David P D'Cruz
Systemic lupus erythematosus (SLE) is a chronic multisystem autoimmune disease that is highly heterogeneous in its presentation. This can pose significant challenges for physicians responsible for the diagnosis and treatment of such patients. SLE arises from a combination of genetic, epigenetic and environmental factors. Pathologically, the disease is primarily driven by loss of immune tolerance and abnormal B- and T-cell function. Major organ involvement may lead to significant morbidity and mortality. Classification criteria for SLE have been developed largely for research purposes; however, these are also widely used in clinical practice...
February 2017: Clinical Medicine: Journal of the Royal College of Physicians of London
https://www.readbyqxmd.com/read/28129605/mesenchymal-stem-cells-upregulate-treg-cells-via-shla-g-in-sle-patients
#6
Chen Chen, Jun Liang, Genhong Yao, Haifeng Chen, Bingyu Shi, Zhuoya Zhang, Cheng Zhao, Huayong Zhang, Lingyun Sun
BACKGROUND: Soluble human leukocyte antigen-G (sHLA-G) is a non-classical HLA class I molecule, exhibiting strong immunosuppressive properties by inducing the differentiation of T regulatory cells (Treg). Mesenchymal stem cells (MSCs) transplantation alleviates disease progression in systemic lupus erythematosus (SLE) patients. However, the underlying mechanisms are largely unknown. OBJECTIVES: To explore whether sHLA-G is involved in upregulating effects of MSCs on Treg, which contributes to therapeutic effects of MSCs transplantation in SLE...
January 24, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28126732/effects-of-n-acetyl-seryl-asparyl-lysyl-proline-on-blood-pressure-renal-damage-and-mortality-in-systemic-lupus-erythematosus
#7
Pablo Nakagawa, Juan X Masjoan-Juncos, Heba Basha, Branislava Janic, Morel E Worou, Tang-Dong Liao, Cesar A Romero, Edward L Peterson, Oscar A Carretero
Systemic lupus erythematosus (SLE) is an autoimmune disease with a high prevalence of hypertension. NZBWF1 (SLE-Hyp) mice develop hypertension that can be prevented by modulating T cells. The peptide N-acetyl-seryl-aspartyl-lysyl-proline (Ac-SDKP) decreases renal damage and improves renal function in a model of SLE without hypertension (MRL/lpr). However, it is not known whether Ac-SDKP prevents hypertension in NZBWF1 mice. We hypothesized that in SLE-Hyp, Ac-SDKP prevents hypertension and renal damage by modulating T cells...
January 2017: Physiological Reports
https://www.readbyqxmd.com/read/28123902/expression-of-autophagy-related-genes-mtor-becline-1-lc3-and-p62-in-the-peripheral-blood-mononuclear-cells-of-systemic-lupus-erythematosus
#8
Zhen-Zhen Wu, Jun-Jun Zhang, Cong-Cong Gao, Man Zhao, Sheng-Yun Liu, Guan-Min Gao, Zhao-Hui Zheng
To determine the expression of mTOR, Becline-1, LC3 and p62 in the peripheral blood mononuclear cells (PBMCs) of systemic lupus erythematosus (SLE) and assess their relationship with disease activity and immunologic features. The expression of mTOR, Becline-1, LC3 and p62 was detected by RT-PCR in 81 SLE subjects and 86 age- and sex-matched healthy controls. Data regarding demographics and clinical parameters were collected. Disease activity of SLE was evaluated according to the SLE Disease Activity Index (SLEDAI) score...
2017: American Journal of Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/28121242/can-killers-be-saviors
#9
G Singh, A K Agarwal, J Prosek, M S K Jayadev, A Singh
Autoimmunity and cancer have a multifarious epidemiology. Often, it is because of an impaired genome, culminating in functional aberrations in the human system. Systemic lupus erythematosus (SLE) is a heterogeneous complex disease which ensues due to the failure of the immune system to distinguish between self and non-self antigens, thus producing autoantibodies against DNA, RNA and proteins. Cancer, the other side of the same coin, results from an excessive proliferation of cells that evade immune regulation as a result of incompetent defense by T-cells, B-cells and macrophages...
January 1, 2017: Lupus
https://www.readbyqxmd.com/read/28120198/mirna-451a-targets-ifn-regulatory-factor-8-for-the-progression-of-systemic-lupus-erythematosus
#10
Jia Cheng, Rui Wu, Li Long, Jiang Su, Jian Liu, Xiao-Dan Wu, Jing Zhu, Bin Zhou
Increasing evidence has shown that miRNA-451a (miR-451a) is associated with the development of systemic lupus erythematosus (SLE); however, the mechanism of this association is not fully known. The present study found an increased expression of miR-451a in the spleen and thymus of an SLE mice model. A decrease in miR-451a expression partly relieved the enlargement of the spleen and decreased the proteinuria content and immune complex deposits. The deficiency in miR-451a also decreased numbers of CD4+CD69+ and CD4+/CD8+ T cells and the levels of the serum cytokines IL-17a and IL-4...
January 24, 2017: Inflammation
https://www.readbyqxmd.com/read/28117437/ccl2-deficient-mesenchymal-stem-cells-fail-to-establish-long-lasting-contact-with-t-cells-and-no-longer-ameliorate-lupus-symptoms
#11
Hong Kyung Lee, Hyung Sook Kim, Ji Sung Kim, Yong Guk Kim, Ki Hwan Park, Jae Hee Lee, Ki Hun Kim, In Young Chang, Sang-Cheol Bae, Youngsoo Kim, Jin Tae Hong, John H Kehrl, Sang-Bae Han
Systemic lupus erythematosus (SLE) is a multi-organ autoimmune disease characterized by autoantibody production. Mesenchymal stem cells (MSCs) ameliorate SLE symptoms by targeting T cells, whereas the mechanisms of their efficacy remain incompletely understood. In this study, we show that transfer of human MSCs increased MRL.Fas(lpr) mouse survival, decreased T cell infiltration in the kidneys, and reduced T cell cytokine expression. In vitro, allogeneic mouse MSCs inhibited MRL.Fas(lpr) T cell proliferation and cytokine production...
January 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28108989/tigit-signaling-pathway-negatively-regulates-cd4-t-cell-responses-in-systemic-lupus-erythematosus
#12
Lie Mao, Hongyan Hou, Shiji Wu, Yu Zhou, Juan Wang, Jing Yu, Xiaohui Wu, Yanfang Lu, Liyan Mao, Munyemana Jean Bosco, Feng Wang, Ziyong Sun
B lymphocyte hyperactivity in systemic lupus erythematosus (SLE) is T cell-dependent, and CD4(+) T cell activation is essential to SLE pathogenesis. However, the mechanism of the deregulation of CD4(+) T cells in SLE is largely unknown. T-cell immunoglobulin and ITIM domain (TIGIT) is a new inhibitory receptor preferentially expressed on activated CD4(+) T cells. Here, we addressed the role of TIGIT in the pathogenesis of SLE. Our results showed that TIGIT expression on CD4(+) T cells was significantly elevated in patients with SLE and highly correlated with the activity of the disease...
January 20, 2017: Immunology
https://www.readbyqxmd.com/read/28105982/human-umbilical-cord-mesenchymal-stem-cells-inhibit-t-follicular-helper-cell-expansion-through-the-activation-of-inos-in-lupus-prone-b6-mrl-fas-lpr-mice
#13
Zhuoya Zhang, Ruihai Feng, Lingying Niu, Saisai Huang, Wei Deng, Bingyu Shi, Genhong Yao, Weiwei Chen, Xiaojun Tang, Xiang Gao, Xuebing Feng, Lingyun Sun
The aberrant generation or activation of T follicular helper (Tfh) cells contributes to the pathogenesis of systemic lupus erythematosus (SLE), yet little is known about how these cells are regulated. In this study, we demonstrated that the frequency of Tfh cells was increased in lupus-prone B6.MRL-<i>Fas<sup>lpr</sup></i> (B6.<i>lpr</i>) mice and positively correlated to plasma cell proportions and serum total IgG as well as anti-dsDNA antibody levels. Transplantation of human umbilical cord mesenchymal stem cells (UC-MSCs) ameliorated lupus symptoms in B6...
January 20, 2017: Cell Transplantation
https://www.readbyqxmd.com/read/28100106/systemic-lupus-erythematosus-in-the-light-of-the-regulatory-effects-of-galectin-1-on-t-cell-function
#14
Á Hornung, É Monostori, L Kovács
Galectin-1 is an endogenous immunoregulatory lectin-type protein. Its most important effects are the inhibition of the differentiation and cytokine production of Th1 and Th17 cells, and the induction of apoptosis of activated T-cells. Galectin-1 has been identified as a key molecule in antitumor immune surveillance, and data are accumulating about the pathogenic role of its deficiency, and the beneficial effects of its administration in various autoimmune disease models. Initial animal and human studies strongly suggest deficiencies in both galectin-1 production and responsiveness in systemic lupus erythematosus (SLE) T-cells...
January 1, 2017: Lupus
https://www.readbyqxmd.com/read/28094303/genetic-polymorphisms-of-rs3077-and-rs9277535-in-hla-dp-associated-with-systemic-lupus-erythematosus-in-a-chinese-population
#15
Junlong Zhang, Wenli Zhan, Bin Yang, Anning Tian, Lin Chen, Yun Liao, Yongkang Wu, Bei Cai, Lanlan Wang
Although the SLE risk gene loci of HLA-DR and HLA-DQ within the major histocompatibility complex (MHC) region has been gradually revealed by recent Genome-Wide Association studies (GWAS), the association of HLA-DP polymorphisms with SLE was minimally reported. Considering that the variants in rs3077 and rs9277535 in the HLA-DP region could influence the immune response by affecting antigen presentation of HLA class II molecules to CD4(+) T cells, the present study aimed to explore the role of HLA-DP polymorphisms in SLE...
January 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28076903/slamf7-engagement-restores-defective-effector-cd8-t-cells-activity-in-response-to-foreign-antigens-in-systemic-lupus-erythematosus
#16
Denis Comte, Maria P Karampetsou, Nobuya Yoshida, Katalin Kis-Toth, Vasileios C Kyttaris, George C Tsokos
OBJECTIVE: Effector CD8+ T cell function is impaired in SLE and associated with compromised ability to fight infections. SLAMF7 engagement has been shown to enhance NK cell degranulation. Thus, we characterized the expression and function of SLAMF7 on CD8+ T cells subsets isolated from peripheral blood of SLE patients and healthy subjects. METHODS: CD8+ T cell subset distribution, SLAMF7 expression and cytolytic enzyme expression (perforin, GzmA, GzmB) were monitored on cells isolated from SLE patients and healthy controls by flow cytometry...
January 11, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/28063160/elevated-semaphorin5a-in-systemic-lupus-erythematosus-is-in-association-with-disease-activity-and-lupus-nephritis
#17
Yan Du, Xinyu Wu, Mo Chen, Wenwen Wang, Weihong Xv, Lv Ye, Di Wu, Jing Xue, Wenjia Sun, Judong Luo, Huaxiang Wu
OBJECTIVE: Systemic lupus erythematosus (SLE) is an autoimmune disease characterized by extensive immune response including over-activation of T and B cells development of pathogenic autoantibodies, organ damage induced by the formation and deposition of immune complex, and the abnormal elevation of type I interferon. Semaphorin5A (Sema5A), is essentially involved in immune cell regulation and also implicated in the pathogenesis of autoimmune disorders. We aimed to evaluate the role of Sema5A in patients with SLE...
January 7, 2017: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/28062664/mapping-eqtls-with-rna-seq-reveals-novel-susceptibility-genes-non-coding-rnas-and-alternative-splicing-events-in-systemic-lupus-erythematosus
#18
Christopher A Odhams, Andrea Cortini, Lingyan Chen, Amy L Roberts, Ana Viñuela, Alfonso Buil, Kerrin S Small, Emmanouil T Dermitzakis, David L Morris, Timothy J Vyse, Deborah S Cunninghame Graham
Studies attempting to functionally interpret complex-disease susceptibility loci by GWAS and eQTL integration have predominantly employed microarrays to quantify gene-expression. RNA-Seq has the potential to discover a more comprehensive set of eQTLs and illuminate the underlying molecular consequence. We examine the functional outcome of 39 variants associated with Systemic Lupus Erythematosus (SLE) through integration of GWAS and eQTL data from the TwinsUK microarray and RNA-Seq cohort in lymphoblastoid cell lines...
January 5, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28045014/death-receptor-6-contributes-to-autoimmunity-in-lupus-prone-mice
#19
Daisuke Fujikura, Masahiro Ikesue, Tsutomu Endo, Satoko Chiba, Hideaki Higashi, Toshimitsu Uede
Expansion of autoreactive follicular helper T (Tfh) cells is tightly restricted to prevent induction of autoantibody-dependent immunological diseases, such as systemic lupus erythematosus (SLE). Here we show expression of an orphan immune regulator, death receptor 6 (DR6/TNFRSF21), on a population of Tfh cells that are highly expanded in lupus-like disease progression in mice. Genome-wide screening reveals an interaction between syndecan-1 and DR6 resulting in immunosuppressive functions. Importantly, syndecan-1 is expressed specifically on autoreactive germinal centre (GC) B cells that are critical for maintenance of Tfh cells...
January 3, 2017: Nature Communications
https://www.readbyqxmd.com/read/28040536/th9-cells-and-il-9-in-autoimmune-disorders-pathogenesis-and-therapeutic-potentials
#20
REVIEW
Yaxiong Deng, Zijun Wang, Christopher Chang, Liwei Lu, Chak Sing Lau, Qianjin Lu
Naïve CD4(+) T cells are pleiotropically divided into various T helper (Th) cell subsets, according to their pivotal roles in the regulation of immune responses. The differentiation of Th9 cells, an interleukin (IL)-9 producing subset, can be impacted by specific environmental cues, co-stimulation with transforming growth factor β (TGF-β) and IL-4, and other regulatory factors. Although IL-9 has been recognized as a classical Th2-related cytokine, recent studies have indicated that IL-9-producing cells contribute to a group of autoimmune disorders including systemic lupus erythematosus (SLE), multiple sclerosis (MS), inflammatory bowel diseases (IBD), rheumatoid arthritis (RA) and psoriasis...
December 28, 2016: Human Immunology
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