keyword
MENU ▼
Read by QxMD icon Read
search

Treg autoimmunity

keyword
https://www.readbyqxmd.com/read/28916232/circulating-normal-igg-as-stimulator-of-regulatory-t-cells-lessons-from-intravenous-immunoglobulin
#1
Mohan S Maddur, Srini V Kaveri, Jagadeesh Bayry
Intravenous immunoglobulin (IVIG), a pooled normal IgG formulation prepared from thousands of healthy donors' plasma, is extensively used for the immunotherapy of autoimmune and inflammatory disorders. Recent reports demonstrate that IVIG exerts anti-inflammatory actions by stimulating the activation and expansion of regulatory T (Treg) cells by multiple mechanisms via antigen-presenting cells (APCs).
September 12, 2017: Trends in Immunology
https://www.readbyqxmd.com/read/28915632/decitabine-inhibits-t-cell-proliferation-via-a-novel-tet2-dependent-mechanism-and-exerts-potent-protective-effect-in-mouse-auto-and-allo-immunity-models
#2
Xue Wang, Jun Wang, Yong Yu, Tonghui Ma, Ping Chen, Bing Zhou, Ran Tao
Multiple sclerosis (MS) is an autoimmune disease characterized by the dysregulated immune response including innate and adaptive immune responses. Increasing evidence has proven the importance of epigenetic modification in the progression of MS. Recent studies revealed that low-dose decitabine (Dec, 5-Aza-2'-deoxycytidine), which incorporates into replicating DNA and inhibits DNA methylation, could prevent experimental autoimmune encephalomyelitis (EAE) development by increasing the number of regulatory T cells (Tregs)...
August 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28912887/rsj16-protects-against-dss-induced-colitis-by-inhibiting-the-ppar-%C3%AE-signaling-pathway
#3
Lifu Wang, Hui Xie, Lian Xu, Qi Liao, Shuo Wan, Zilong Yu, Datao Lin, Beibei Zhang, Zhiyue Lv, Zhongdao Wu, Xi Sun
Background: Epidemiologic studies and animal model experiments have shown that parasites have significant modulatory effects on autoimmune disorders, including inflammatory bowel disease (IBD). Recombinant Sj16 (rSj16), a 16-kDa secreted protein of Schistosoma japonicum (S.japonicum) produced by Escherichia coli (E. coli), has been shown to have immunoregulatory effects in vivo and in vitro. In this study, we aimed to determine the effects of rSj16 on dextran sulfate sodium (DSS)-induced colitis. Methods: DSS-induced colitis mice were treated with rSj16...
2017: Theranostics
https://www.readbyqxmd.com/read/28894447/the-microbial-metabolite-butyrate-induces-expression-of-th1-associated-factors-in-cd4-t-cells
#4
Meike Kespohl, Niyati Vachharajani, Maik Luu, Hani Harb, Sabine Pautz, Svenja Wolff, Nina Sillner, Alesia Walker, Philippe Schmitt-Kopplin, Thomas Boettger, Harald Renz, Stefan Offermanns, Ulrich Steinhoff, Alexander Visekruna
Short-chain fatty acids (SCFAs), which are generated by the bacterial fermentation of dietary fibers, promote expansion of regulatory T cells (Tregs). Potential therapeutic value of SCFAs has been recently highlighted in the experimental models of T cell-mediated autoimmunity and allergic inflammation. These studies suggest that physiological intestinal concentrations of SCFAs within the millimolar range are crucial for dampening inflammation-mediated processes. Here, we describe opposing effects of SCFAs on T cell-mediated immune responses...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28894277/host-expression-of-the-cd8-treg-nk-cell-restriction-element-qa-1-is-dispensable-for-transplant-tolerance
#5
Blair T Stocks, Christopher S Wilson, Andrew F Marshall, Lauren A Brewer, Daniel J Moore
Disruption of the non-classical Major Histocompatibility Complex (MHC) Ib molecule Qa-1 impairs CD8 Treg and natural killer (NK) cell function and promotes a lupus-like autoimmune disease. This immune perturbation would be expected to enhance anti-transplant responses and impair tolerance induction, but the effect of Qa-1 deficiency on the transplant response has not been previously reported. Qa-1 deficiency enhanced CD4 TFH and germinal center (GC) B cell numbers in naïve mice and hastened islet allograft rejection...
September 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28893978/gut-bacteria-from-multiple-sclerosis-patients-modulate-human-t-cells-and-exacerbate-symptoms-in-mouse-models
#6
Egle Cekanaviciute, Bryan B Yoo, Tessel F Runia, Justine W Debelius, Sneha Singh, Charlotte A Nelson, Rachel Kanner, Yadira Bencosme, Yun Kyung Lee, Stephen L Hauser, Elizabeth Crabtree-Hartman, Ilana Katz Sand, Mar Gacias, Yungjiao Zhu, Patrizia Casaccia, Bruce A C Cree, Rob Knight, Sarkis K Mazmanian, Sergio E Baranzini
The gut microbiota regulates T cell functions throughout the body. We hypothesized that intestinal bacteria impact the pathogenesis of multiple sclerosis (MS), an autoimmune disorder of the CNS and thus analyzed the microbiomes of 71 MS patients not undergoing treatment and 71 healthy controls. Although no major shifts in microbial community structure were found, we identified specific bacterial taxa that were significantly associated with MS. Akkermansia muciniphila and Acinetobacter calcoaceticus, both increased in MS patients, induced proinflammatory responses in human peripheral blood mononuclear cells and in monocolonized mice...
September 11, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28883547/casein-kinase-2-is-a-critical-determinant-of-the-balance-of-th17-and-treg-cell-differentiation
#7
Sung Woong Jang, Soo Seok Hwang, Hyeong Su Kim, Keoung Oh Lee, Min Kyung Kim, Wonyong Lee, Kiwan Kim, Gap Ryol Lee
Th17 cells promote inflammatory reactions, whereas regulatory T (Treg) cells inhibit them. Thus, the Th17/Treg cell balance is critically important in inflammatory diseases. However, the molecular mechanisms underlying this balance are unclear. Here, we demonstrate that casein kinase 2 (CK2) is a critical determinant of the Th17/Treg cell balance. Both the inhibition of CK2 with a specific pharmacological inhibitor, CX-4945, and its small hairpin RNA (shRNA)-mediated knockdown suppressed Th17 cell differentiation but reciprocally induced Treg cell differentiation in vitro...
September 8, 2017: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/28879523/regulatory-t-cells-molecular-and-cellular-basis-for-immunoregulation
#8
Yosuke Togashi, Hiroyoshi Nishikawa
CD4(+) regulatory T cells (Tregs) are a highly immune-suppressive subset of CD4(+) T cells, characterized by expression of the master regulatory transcription factor FOXP3. Tregs are proven to play central roles in the maintenance of self-tolerance in healthy individuals. Tregs are involved in maintaining immune homeostasis: they protect hosts from developing autoimmune diseases and allergy, whereas in malignancies, they promote tumor progression by suppressing anti-tumor immunity. Elucidating factors influencing Treg homeostasis and function have important implications for understanding disease pathogenesis and identifying therapeutic opportunities...
September 7, 2017: Current Topics in Microbiology and Immunology
https://www.readbyqxmd.com/read/28878738/overlooked-mechanisms-in-type-1-diabetes-etiology-how-unique-costimulatory-molecules-contribute-to-diabetogenesis
#9
REVIEW
David H Wagner
Type 1 Diabetes (T1D) develops when immune cells invade the pancreatic islets resulting in loss of insulin production in beta cells. T cells have been proven to be central players in that process. What is surprising, however, is that classic mechanisms of tolerance cannot explain diabetogenesis; alternate mechanisms must now be considered. T cell receptor (TCR) revision is the process whereby T cells in the periphery alter TCR expression, outside the safety-net of thymic selection pressures. This process results in an expanded T cell repertoire, capable of responding to a universe of pathogens, but limitations are that increased risk for autoimmune disease development occurs...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28877989/regulatory-t-cell-mediated-suppression-of-inflammation-induced-by-dr3-signaling-is-dependent-on-galectin-9
#10
Shravan Madireddi, So-Young Eun, Amit K Mehta, Aruna Birta, Dirk M Zajonc, Toshiro Niki, Mitsuomi Hirashima, Eckhard R Podack, Taylor H Schreiber, Michael Croft
Stimulation of several TNF receptor family proteins has been shown to dampen inflammatory disease in murine models through augmenting the number and/or activity of regulatory T cells (Tregs). We recently found that one molecule, 4-1BB, used binding to Galectin-9 to exert its immunosuppressive effects and drive expansion of CD8(+)Foxp3(-) Tregs. We now show that ligation of another TNFR family molecule, DR3, which has previously been found to strongly expand CD4(+)Foxp3(+) Tregs and suppress inflammation, also requires Galectin-9...
September 6, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28877881/regulatory-t-cells-in-acute-and-chronic-kidney-diseases
#11
Rahul Sharma, Gilbert R Kinsey
The Foxp3-expressing CD4(+) regulatory T cells (Tregs), which is a subset of the helper T-cells (Th), constitute one of the major mechanisms of peripheral tolerance. Tregs prevent abnormal activation of the immune system throughout the lifespan, thus protecting from autoimmune and inflammatory diseases. Recent studies have elucidated the role of Tregs beyond autoimmunity. Tregs play important functions in controlling not only innate and adaptive immune cell activation, but also regulate non-immune cell function during insults and injury...
September 6, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28874534/treg-specific-il-27r%C3%AE-deletion-uncovers-a-key-role-for-il-27-in-treg-function-to-control-autoimmunity
#12
Jeongsu Do, Dongkyun Kim, Sohee Kim, Alice Valentin-Torres, Nina Dvorina, Eunjung Jang, Vivekananthan Nagarajavel, Tara M DeSilva, Xiaoxia Li, Angela H Ting, Dario A A Vignali, Stephen A Stohlman, William M Baldwin, Booki Min
Dysregulated Foxp3(+) Treg functions result in uncontrolled immune activation and autoimmunity. Therefore, identifying cellular factors modulating Treg functions is an area of great importance. Here, using Treg-specific Il27ra(-/-) mice, we report that IL-27 signaling in Foxp3(+) Tregs is essential for Tregs to control autoimmune inflammation in the central nervous system (CNS). Following experimental autoimmune encephalomyelitis (EAE) induction, Treg-specific Il27ra(-/-) mice develop more severe EAE. Consistent with the severe disease, the numbers of IFNγ- and IL-17-producing CD4 T cells infiltrating the CNS tissues are greater in these mice...
September 5, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28870639/migratory-properties-of-ex-vivo-expanded-regulatory-t-cells-influence-of-all-trans-retinoic-acid-and-rapamycin
#13
J L Beermann, C T Thiesler, U Dringenberg, C Alter, S Kuhs, S Velaga, S N Ukena, A Franzke
Adoptively transferred regulatory T-cells represent a promising therapeutic approach for tolerance induction in autoimmunity and transplantation medicine. However, a major hurdle for clinical application is the manufacturing of sufficient Treg cell numbers with respect to the low frequency of naturally occurring Tregs in the peripheral blood. Therefore, ex vivo large-scale expansion is mandatory for most of the clinical conditions. Besides the Treg cell number other parameters of the cell product are of high relevance for safe and efficient clinical Treg cell application like Treg cell purity, suppressive capacity and genetic stability of the Treg cell phenotype...
September 1, 2017: Transplant Immunology
https://www.readbyqxmd.com/read/28855905/mesenchymal-stem-cells-may-ameliorate-nephrotic-syndrome-post-allogeneic-hematopoietic-stem-cell-transplantation-case-report
#14
Xin Zhang, Yanwen Peng, Zhiping Fan, Ke Zhao, Xiaoyong Chen, Ren Lin, Jing Sun, Guobao Wang, AndyPeng Xiang, Qifa Liu
INTRODUCTION: Because of their immunomodulatory and anti-inflammatory effects, mesenchymal stem cells (MSCs) have been considered as potential therapeutic agents for treating immune-related or autoimmune diseases, such as graft-versus-host disease (GVHD). Nephrotic syndrome (NS) after allogeneic hematopoietic stem cell transplantation (allo-HSCT) is an uncommon complication with unclear etiology and pathogenesis. It may be an immune disorder involving immune complex deposition, B cells, regulatory T cells (Tregs), and Th1 cytokines and be a manifestation of chronic GVHD...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28851631/strain-specific-helper-t-cell-profile-in-the-gut-associated-lymphoid-tissue
#15
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/28844943/the-unknown-aspect-of-baff-inducing-il-35-production-by-a-cd5-cd1d-hi-fc%C3%AE-riib-hi-regulatory-b-cell-subset-in-lupus
#16
Yamin Zhang, Jun Li, Nuoya Zhou, Yi Zhang, Min Wu, Jian Xu, Chen Shen, Xiangjie An, Guanxin Shen, Ming Yang, Chun Zhang, Juan Tao
IL-35 is a critical immunosuppressive cytokine and plays an important role in various autoimmune diseases. The purpose of this study was to determine whether BAFF, a key pathogenic factor in SLE, also a dichotomous regulator for B cell immune responses, has an effect on IL-35-producing regulatory B cells and its underlying mechanisms in lupus. We found that exogenous BAFF could induce IL-35 production by splenic B cells from MRL-Fas(lpr/lpr) mice. BAFF-induced IL-35-producing B cells were mainly from MZ B cell subset and exhibited a CD5(+)CD1d(hi)FcγRIIb(hi) phenotype...
August 24, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28843039/tnf-tnf-inducers-and-tnfr2-agonists-a-new-path-to-type-1-diabetes-treatment
#17
REVIEW
Denise L Faustman
BACKGROUND: In the past decade, interest in the century-old tuberculosis vaccine, bacillus Calmette-Guerin (BCG), has been revived for potential new therapeutic uses in type 1 diabetes and other forms of autoimmunity. METHODS: Diverse clinical trials are now proving the value of BCG in prevention and treatment of type 1 diabetes, in the treatment of new onset multiple sclerosis and other immune conditions. BCG contains the avirulent tuberculosis strain Mycobacterium bovis, a vaccine originally developed for tuberculosis prevention...
August 26, 2017: Diabetes/metabolism Research and Reviews
https://www.readbyqxmd.com/read/28839093/imaging-the-emergence-and-natural-progression-of-spontaneous-autoimmune-diabetes
#18
James F Mohan, Rainer H Kohler, Jonathan A Hill, Ralph Weissleder, Diane Mathis, Christophe Benoist
Type 1 diabetes in the nonobese diabetic mouse stems from an infiltration of the pancreatic islets by a mixed population of immunocytes, which results in the impairment and eventual destruction of insulin-producing β-cells. Little is known about the dynamics of lymphocyte movement in the pancreas during disease progression. Using advanced intravital imaging approaches and newly created reporter mice (Flt3-BFP2, Mertk-GFP-DTR, Cd4-tdTomato, Cd8a-tdTomato), we show that the autoimmune process initiates first with a T cell infiltration into the islets, where they have restricted mobility but reside and are activated in apposition to CX3CR1(+) macrophages...
September 12, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28833039/minimally-manipulated-murine-regulatory-t-cells-purified-by-reversible-fab-multimers-are-potent-suppressors-for-adoptive-t-cell-therapy
#19
Fabian Mohr, Julius Clemens Fischer, Marc Nikolaus, Christian Stemberger, Stefan Dreher, Admar Verschoor, Tobias Haas, Hendrik Poeck, Dirk H Busch
The transfer of regulatory T cells, either freshly isolated, or modified, represents a promising therapeutic approach to dampen misdirected immune responses, like autoimmune diseases, chronic inflammatory syndromes and graft versus host disease. Clinical isolation of highly pure regulatory T cell (Treg) populations is still challenging and labeling reagents can influence their viability and functionality, potentially altering the potency of isolated Treg cell products. Here we show that reversible Fab multimer-based Treg purification can prevent conventional antibody label-induced interferences in vitro and in vivo...
August 17, 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/28829428/in-vitro-and-in-vivo-assessment-of-t-b-and-myeloid-cells-suppressive-activity-and-humoral-responses-from-transplant-recipients
#20
Séverine Bézie, Claire Usal, Carole Guillonneau
The main concern in transplantation is to achieve specific tolerance through induction of regulatory cells. The understanding of tolerance mechanisms requires reliable models. Here, we describe models of tolerance to cardiac allograft in rat, induced by blockade of costimulation signals or by upregulation of immunoregulatory molecules through gene transfer. Each of these models allowed in vivo generation of regulatory cells such as regulatory T cells (Tregs), regulatory B cells (Bregs) or regulatory myeloid cells (RegMCs)...
August 12, 2017: Journal of Visualized Experiments: JoVE
keyword
keyword
60762
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"