regulatory t cells in hematologic malignancies
Báo cáo y học: "Nature of Regulatory T Cells in the Context of Allergic Disease." ppsx
... mucosa represents a unique immunologic unit with the first contact with the allergen within the gastrointestinal tract, where immune tolerance is the natural outcome Freshly isolated oral LCs expressed ... applicability that will have persistent clinical effectiveness that can be built within a short duration of therapy time.1 107 Early and Late Effects of SIT on Mast Cells, Basophils, and Eosinophils SIT ... et al, Regulatory T Cells in the Context of Allergic Disease thus preventing the activation of mast cells and basophils IgG4 has been shown to reduce the IgE-mediated degranulation of these cells...
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Báo cáo y học: "Regulating the immune system: the induction of regulatory T cells in the periphery Jane H Buckner1 and Steven F Ziegler2" pot
... selection, but also in the periphery Those autoreactive cells that escape negative selection must be restrained in the periphery, and it is thought that CD4+CD25+ TR cells generated in the thymus ... Tr1 cells [74], extends this paradigm The fate of the TR cells induced at the site is not known — whether these cells exist only transiently then die, whether they persist in the body as TR cells, ... These regulatory phenomena are very important in the resolution of inflammation, to rein in the T cell response, to control bystander responses to self-antigens and to limit the resulting T cells...
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Báo cáo y học: "The role of regulatory T cells in antigen-induced arthritis: aggravation of arthritis after depletion and amelioration after transfer of CD4+CD25+ T cells" doc
... of Treg cells [37] With this in mind, it could be interesting to investigate whether the accumulated Treg cells in patients with arthritis function properly in vivo and whether these patients ... foreign antigen mBSA clearly demonstrates that their suppressive effect is not strictly limited to autoreactive T cells Taking into consideration that Treg cells are also critically involved in the ... CD25-expressing cells or transfer of CD4+CD25+ cells, in the present study we demonstrated that Treg cells modulate the onset of AIA but are ineffective at later stages, calling into question their...
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Báo cáo y học: "Role of regulatory T cells in experimental arthritis and implications for clinical use" potx
... might not be a feasible option treatment decreases the infiltrate in joints Furthermore, RA patients relapse shortly after withdrawal of anti-TNF-α [19] and thus, despite the dampening of joint inflammation ... that Treg isolated from patients with active RA before treatment with anti-TNF-α were unable to suppress proinflammatory cytokine secretion from activated T cells and monocytes After anti-TNF-α treatment ... instead very active The authors provided a startling explanation for this apparent incongruence, in their discovery that tissue-infiltrating effector (pathogenic) T cells were less prone to be...
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Báo cáo y học: "Indoleamine 2,3-dioxygenase-expressing dendritic cells are involved in the generation of CD4+CD25+ regulatory T cells in Peyer''''s patches in an orally tolerized, collagen-induced arthritis mouse model" ppt
... an IDO inhibitor These findings suggest that the functional activities of IDO from tolerized mice could affect the T- cell response In the resting state, autoreactive T cells residing in the periphery ... and inhibit T- cell proliferation In this regard, it will be interesting to investigate IDO expression in different subsets of DCs from tolerized mice and to characterize their role in the induction ... determining immunity or immune tolerance; this determination is based on the maturation or activation state and the subset of DCs, and cytokine profiles in the microenvironment at the time of antigen...
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Báo cáo y học: "Regulatory T cells in systemic lupus erythematosus: past, present and future" pot
... and the suppressive function of these cells was intact in cultures without antigen-presenting cells The functional activity of both patient and healthy control Tregs, however, was decreased in the ... presence of the patient’s antigen-presenting cells Moreover, IFNα produced by these antigen-presenting cells strongly contributed to the defective function These findings are consistent with the evidence ... activate more self-reactive T cells to produce proinflammatory cytokines which sustain this pathologic circuit (Figure 1) Strategies are needed to interrupt this cycle and to drive the maturation...
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Báo cáo y học: "haracterization of regulatory T cells in urban newborns" pptx
... supervised patient recruitment for the study and obtained funding JEG participated in study design, data analysis, and obtained funding All of the authors participated in drafting the manuscript and ... and the R system for statistical computing [27] Results Subject characteristics The subjects in this study consisted of a subset of newborns and mothers enrolled in URECA at the Boston study site ... statistical differences in baseline characteristics of newborns with and without proliferation data (Table 1) Although of the infants were admitted to the ICU, none of them were intubated Page...
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Báo cáo sinh học: " Protection against the allergic airway inflammation depends on the modulation of spleen dendritic cell function and induction of regulatory T cells in mice" docx
... and mature DCs, resulting in tolerogenic interaction with T cells in SIT We found that the combination of DNA vaccination with Fc and OVA had better effects onOVAinduced alterations in the spleen ... regulation of type immunity in asthma Competing interests The authors declare that they have no competing interests Authors' contributions YL performed all analyses and wrote the initial draft of the ... stimulating the production of TH1 cytokine synthesis in naïve and memory T cells As an alternative to the administration of allergens or allergen derivatives, vaccination with allergen-encoding...
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báo cáo hóa học:" In vitro generation of cytotoxic and regulatory T cells by fusions of human dendritic cells and hepatocellular carcinoma cells" docx
... still not clear in this experimental setting A recent study has demonstrated that vaccination with DCs/tumor fusion cells producing TGF-β resulted in the induction of Treg in vivo and in vitro in ... autologous vaccination were investigated We first assessed the ability of autologous FCs vaccination to stimulate T cells After the ninth vaccination, unirradiated DCs/auto-HCC stimulated T- cell ... and to induce CTL responses against the HCC cells (Figure 3E), suggesting that the soluble factors in the supernatant inhibit the maturation of fusion cells and have a negative impact in the stimulation...
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báo cáo hóa học:" Generation in vivo of peptide-specific cytotoxic T cells and presence of regulatory T cells during vaccination with hTERT (class I and II) peptide-pulsed DCs" pot
... Cytotoxicity of In Vivo Generated T Cells T2 -cytotoxicity Cumulative cytotoxicity results for all patient samples show that after two cycles of vaccination (the time point associated with the ... production of T cells that not recognize tumour cells in vivo based on this epitope [67-69] In contrast to these studies, the ability of our vaccination strategy to generate tetramer+ CD8 +T cells ... CD8 +T cells to hTERT p540 tended to be less efficient compared with hTERT p865 However, in the in vitro cytotoxicity assays, both T cells generated by both peptides were equivalent in lysing...
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Báo cáo y học: "CD25brightCD4+ regulatory T cells are enriched in inflamed joints of patients with chronic rheumatic disease" potx
... joint These features were apparent in the vast majority of the patients despite the different treatments they received, indicating that the anti-rheumatic drugs that patients receive not affect ... enrichment of regulatory T cells was seen Thus, the simple extrapolation of the animal data into future therapeutic strategies that aim at reconstituting this population does not seem to hold true in ... CD25brightCD4+ T cells in the joint of patients with rheumatic disorders suggest that the immune system is actively attempting to control the inflammatory responses by recruiting regulatory T cells However,...
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Báo cáo y học: "Are CD4+CD25-Foxp3+ cells in untreated new-onset lupus patients regulatory T cells" doc
... of this abnormally increased cell entity in UNOL patients Patients and healthy controls Twenty-two UNOL patients of Chinese ethnicity (19 women and men) were recruited in this study All patients ... patients correlated with disease activity and that the cell number significantly decreased after glucocorticoid treatment [2] Whether these cells are Tregs or activated Teffs remains to be determined ... in a heterodimeric complex with TSLP receptor [15] TSLP-activated dendritic cells might participate in the homeostatic maintenance of CD4+ and development of Tregs in thymus [16] In this study,...
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Báo cáo y học: " CD39+ Regulatory T cells suppress generation and differentiation of Th17 cells in human malignant pleural effusion via a LAP-dependent mechanism" pps
... cells were Tregs The most important finding in the present study was that CD39+Tregs could be able to inhibit the generation and differentiation of Th17 cells in a dose-dependent manner The mechanism ... proinflammatory cytokines might affect the generation and differentiation of Tregs or/and Th17 cells in MPE To evaluate the contribution of cytokines to the numbers of pleural CD39+Tregs and Th17 ... T cells after culturing in presence both IL-1b and IL-6 (C) The representative dot plots of CD39+Tregs and Th17 cells detected in naïve CD4+ T cells after culturing in presence of TGF-b1 (D) The...
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Báo cáo y học: "Heterogeneity of CD4+ and CD8+ memory T cells in localized and generalized Wegener’s granulomatosis." potx
... and the β2integrin LFA-1 on T cells [5,19] In addition to the steps mediated by selectin and adhesion molecules, chemokine receptors support the selective recruitment of differentiated T cells into ... further studies have to address functional aspects such as response in vitro to chemotactic gradients, cytokine release and cytotoxic activity of distinct T cell populations Detection of the inducible ... described Thus, the local cytokine milieu might depend on the site and extent of disease activity [4,5] The shift in the cytokine profile in granulomatous lesions of the respiratory tract might be...
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Báo cáo y học: "Decreased effector memory CD45RA+CD62L– CD8+ T cells and increased central memory CD45RA–CD62L+ CD8+ T cells in peripheral blood of rheumatoid arthritis patients" ppt
... by Student’s t- test), between the age of the SLE patient group and the corresponding healthy control group (P > 0.9, by Student’s t- test), and between the RA patient group and the SLE patient group ... however, that peripheral blood T cells from RA patients not exhibit an increase in apoptosis in in vitro cultures, which is in contrast to synovial membrane T cells [17,18] This may suggest that the ... CD8+ T cells into effector memory CD8+ T cells would also result in an increase in the central memory population with a concomitant decrease in the effector T cells, as observed in the present study...
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Báo cáo y học: "The expansion of CD4+CD28– T cells in patients with rheumatoid arthritis" potx
... T cells contribute to the cell infiltrate and exhibit increased survival after apoptotic stimuli Resistance to apoptosis in CD28– T cells is due to elevated expression of antiapoptotic protein ... required In all patients, X-rays were made of the chest, hands, feet, and, when required, other joints The evaluation of the subjects included physical examinations with attention to pattern of joint ... 4.82% in patients with limited joint manifestations, 7.05% in those with advanced joint involvement, and 10.35% in those with extra-articular manifestations R211 Arthritis Research & Therapy Vol...
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Báo cáo y học: "Prevalence, clinical relevance and characterization of circulating cytotoxic CD4+CD28– T cells in ankylosing spondylitis" ppt
... CD4+CD28– T cells were maintained under identical conditions, differences in the apoptotic rate cannot be attributed to tissue culture conditions In the healthy control Available online http://arthritis-research.com/content/5/5/R292 ... of clinical restriction in ankylosing spondylitis patients Patients were grouped into those with minor restrictions (cervical rotation in sitting and lying position > 70°, tragus to wall distance ... results of the independent experiments, with 50% of cases within the boxes and 80% between the end-points of the whiskers (lines) The two-sided paired t- test was used to determine statistical...
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Báo cáo y học: "A paragon of self-tolerance: CD25+CD4+ regulatory T cells and the control of immune responses" pps
... CD25+CD4+ cells after stimulation through the TCR and might therefore mediate its effects in a membraneproximal manner [53] The level at which these anti-inflammatory cytokines operate to maintain tolerance ... B, Mason D: Regulatory T cells in the control of autoimmunity: the essential role of transforming growth factor beta and interleukin in the prevention of autoimmune thyroiditis in rats by peripheral ... thymocytes [7–10] Collectively, such data strongly suggested that a cell population with a crucial role in maintaining self-tolerance was resident within the normal T lymphocyte pool Attempts were then...
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Báo cáo y học: " Induction of IL-10-producing CD4+CD25+ T cells in animal model of collagen-induced arthritis by oral administration of type II collagen" pptx
... elevated production of TGF-β from tolerized lymphocytes as well, and it would therefore be very interesting to investigate the role of Th3 cells In order to further define the characteristics of cells ... agents, the plates were incubated with previously collected supernatants for hour at room temperature The plates were then washed and incubated for hour at room temperature with biotinconjugated rat ... function that are involved in the induction of peripheral tolerance in an orally tolerized mouse model of arthritis R218 Our findings indicate that the serum levels of proinflammatory and anti-inflammatory...
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Báo cáo y học: "Direct Toll-like receptor 2 mediated co-stimulation of T cells in the mouse system as a basis for chronic inflammatory joint disease" ppsx
... GT-3' mTLR4 upper 5'-AGC CGG AAG GTT ATT GTG GTA GT-3' mTLR4 lower 5'-TGC CGT TTC TTG TTC TTC CTC T- 3' mTLR6 upper 5'-ATA CCA CCG TTC TCC ATT T- 3' mTLR6 lower 5'-GAC GTG CTC TAT CAT CAG TG-3' ... AAT AAC-3' mTLR1 upper 5'-GGC ATA CGC CAG TCA AAT A-3' mTLR1 lower 5'-ATG CAG AAA TGG GCT AAC TT-3' mTLR2 upper 5'-TCT GCT GTG CCC TTC TCC TGT TGA-3' mTLR2 lower 5'-GGC CGC GTC GTT GTT CTC GT-3' ... that bacterial lipoproteins directly stimulate alloreactive CTLs to proliferate and to secrete IFN-γ via TLR-2 adds another facet to the functional potential of T effector cells The fact that...
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