Abstract:
:We have examined the influence of listeriolysin O (LLO), the hemolysin secreted by the pathogenic bacterium Listeria monocytogenes, on major histocompatibility complex class II-dependent T cell activation. Stimulation of T cells by native antigens but not by peptides is inhibited upon pretreatment of antigen-presenting cells (APC) with LLO. Experiments presented here reveal that this inhibition is not due to a lack in processing of antigen by APC but is the result of an irreversible inactivation of T cells that recognize antigen on LLO-treated APC. Incubation of mixtures of two different T cells where only one antigen was presented on LLO-treated APC suggested that T cell inactivation is antigen specific. The inactivation was dominant and could be observed even in the presence of amounts of synthetic peptides that normally lead to T cell responses. This condition is reminiscent of the T cell inhibition observed when antagonistic and stimulatory peptides are added to APC at the same time. Our results thus reveal a novel type of interference by pathogens with antigen presentation and T cell stimulation that could give the pathogen a decisive advantage in dissemination and disease.
journal_name
Eur J Immunoljournal_title
European journal of immunologyauthors
Darji A,Stockinger B,Wehland J,Chakraborty T,Weiss Sdoi
10.1002/eji.1830270716subject
Has Abstractpub_date
1997-07-01 00:00:00pages
1696-703issue
7eissn
0014-2980issn
1521-4141journal_volume
27pub_type
杂志文章abstract::The TNF member LIGHT also known as TL4 or TNFSF14) can play a major role in cancer control via its two receptors; it induces tumor cell death through lymphotoxin-beta receptor (LT-betaR) and ligation to the herpes virus entry mediator (HVEM) amplifies the immune response. By studying the effect of LIGHT in the transcr...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200939069
更新日期:2009-09-01 00:00:00
abstract::The host protective immune response to blood stage malaria infection was studied using Plasmodium chabaudi chabaudi (P.chabaudi) in NIH mice. It has been shown previously that CD4+ cells are critically required for protection against erythrocytic infection. Mice lacking a functional CD4+ cell compartment suffer unremi...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830240124
更新日期:1994-01-01 00:00:00
abstract::An antigen-specific T-T hybridoma was mutagenized with ethylmethane sulfonate and negatively selected by anti-Ly-6 antibody-induced growth inhibition. One of the mutants generated, M4/8, had lost surface expression of a T cell receptor (TcR) V beta 8 epitope detected on the surface of the parental cell line. However, ...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830200702
更新日期:1990-07-01 00:00:00
abstract::MyD88 is a key adaptor molecule in innate resistance, engaged in most Toll-like receptor, as well as IL-1 and IL-18, signalling. Here, we analyzed the role of MyD88 in innate resistance during infection with vesicular stomatitis virus (VSV) using myd88(-/-) mice. We found an increased susceptibility to VSV in myd88(-/...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200737310
更新日期:2007-09-01 00:00:00
abstract::Activation of the alternative complement pathway by human B cell lymphoma lines is correlated with the presence of Epstein Barr virus (EBV) in the cell genome. EBV-negative B cell lymphoma lines produce little activation of the alternative pathway as measured either by C3 deposition on the cell surface or C3 conversio...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830080702
更新日期:1978-07-01 00:00:00
abstract::The magnitude of the output of lymphocytes from Peyer's patches (PP), the morphology of the lymphocytes and their route of exit from PP has been examined in sheep. An extracorporeal perfusion system was used to selectively label a 3-4 m length of the terminal ileum of lambs at 6-10 weeks of age (the mesenteric lymph n...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830140103
更新日期:1984-01-01 00:00:00
abstract::The biochemical behavior and peptide binding properties of a soluble form of the human class II DR4Dw4 molecule (PI-DR4Dw4) were compared to DR4Dw4 molecules containing the transmembrane and cytoplasmic domains that were purified both from B and transfected chinese hamster ovary cells. Recombinant and B cell-derived D...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830230112
更新日期:1993-01-01 00:00:00
abstract::Antigen-specific immunotherapy is an attractive strategy for cancer control. In the context of antiviral vaccines, adenoviral vectors have emerged as a favorable means for immunization. Therefore, we chose a strategy combining use of these vectors with another successful approach, namely linkage of the vaccine antigen...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200939543
更新日期:2009-10-01 00:00:00
abstract::Deficiencies in terminal complement components, including the component C7, are uncommon and associated with an increased risk of recurrent systemic neisserial infection. A total of 22 molecular defects have been reported in the C7 gene with both complete (C7Q0) and subtotal (C7SD) C7 deficiencies. In this study we re...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200636812
更新日期:2007-05-01 00:00:00
abstract::Japanese encephalitis, caused by infection with the neurotropic flavivirus, Japanese encephalitis virus (JEV), is among the most important viral encephalitides in Asia. While previous studies established an essential role of Ab and type I IFN, it is still unclear if the cell-mediated immune responses, through their di...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.201243152
更新日期:2013-07-01 00:00:00
abstract::The binding of antigen to the multicomponent T cell antigen receptor (TcR)-CD3 complex leads to the activation of several signal transduction pathways which result in T lymphocyte proliferation and lymphokine secretion by molecular mechanisms and catalytic molecules as yet poorly defined. One of the earliest events th...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830220142
更新日期:1992-01-01 00:00:00
abstract::Th2 lymphocytes deliver essential signals for induction of asthmatic airway inflammation. We previously found that airway antigen challenge induces recruitment of Gr-1(+) neutrophils prior to the recruitment of Th2 cells. We examined, therefore, whether Gr-1(+) cells contribute to the development of Th2-dependent airw...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200838985
更新日期:2009-08-01 00:00:00
abstract::We have previously reported the development of a two-step culture system in which soluble anti-mu monoclonal antibodies prime small resting murine B cells to secrete immunoglobulin (Ig) in response to restimulation with a mixture of interleukin-4 (IL-4) and IL-5. Here we have extended these studies to investigate the ...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830230243
更新日期:1993-02-01 00:00:00
abstract::The exact identification of B cell subsets is instrumental to understand their dynamics under physiological and pathological conditions. Human memory B cells are currently identified according to the expression of CD27, which is absent on naive B cells. We report here that the ATP-binding cassette (ABC)B1 transporter ...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200535364
更新日期:2005-12-01 00:00:00
abstract::Vaccination of mice with irradiated Schistosoma mansoni larvae confers high levels of immunity which is mediated by Th1-type lymphocytes. To investigate a possible role for IL-12 in the induction of protection, we have compared the immune response of IL-12 p40-deficient (KO) mice and their C57BL/6 (WT) counterparts fo...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/(SICI)1521-4141(199809)28:09<2827::AID-IMM
更新日期:1998-09-01 00:00:00
abstract::IFN-gamma produced by CD4+ T helper 1 (Th1) cells promotes protection against intracellular pathogens. Antigen activation of Th1 cells is an important mode of IFN-gamma induction, but here we analyze a second, antigen-nonspecific pathway capable of inducing full IFN-gamma transcription. IL-12 or IL-18 alone do not ind...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/(SICI)1521-4141(199902)29:02<548::AID-IMMU
更新日期:1999-02-01 00:00:00
abstract::B cells from bursa of Fabricius of newly hatched chickens are able to reconstitute the B cell compartment of chemically bursectomized chickens. The resulting B cell chimerism can be detected with monoclonal antibodies against donor B cell alloantigen. Chimeric chickens accept donor-type skin grafts and are unresponsiv...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830190303
更新日期:1989-03-01 00:00:00
abstract::Treatment of systemic lupus erythematosus patients with epratuzumab (Emab), a humanized monoclonal antibody targeting CD22, leads to moderately reduced B-cell numbers but does not completely deplete B cells. Emab appears to induce immunomodulation of B cells, but the exact mode of action has not been defined. In the p...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.201646383
更新日期:2016-09-01 00:00:00
abstract::Crosslinking of Fc γ receptor II B (FcγRIIB) and the BCR by immune complexes (IC) can downregulate antigen-specific B-cell responses. Accordingly, FcγRIIB deficiencies have been associated with B-cell hyperactivity in patients with systemic lupus erythematosus and mouse models of lupus. However, we have previously sho...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200940184
更新日期:2010-10-01 00:00:00
abstract::The aim of this study was to investigate the effects of IL-17-producing T cells, including Th17 and Tc17 cells, on acute graft-versus-host disease (aGVHD) in patients who had undergone granulocyte colony-stimulating factor (G-CSF)-mobilised peripheral blood progenitor cell (PBPC) and G-CSF-primed bone marrow (G-BM) tr...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.201040793
更新日期:2011-02-01 00:00:00
abstract::An effective immune response against the intracellular pathogen Mycobacterium tuberculosis is strictly dependent on T cell activation. Although this protective response mainly depends on local release of pro-inflammatory cytokines by Th1 CD4(+) T cells, contribution of Vgamma9 / Vdelta2 T lymphocytes to immune protect...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/(SICI)1521-4141(200005)30:5<1512::AID-IMMU
更新日期:2000-05-01 00:00:00
abstract::Peroxisome proliferator-activated receptor gamma (PPARgamma ), a member of the nuclear receptor superfamily, has recently been described as a modulator of macrophage functions and as an inhibitor of T cell proliferation. Here, we investigated the role of PPARgamma in dendritic cells (DC), the most potent antigen-prese...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/1521-4141(2001010)31:10<2857::aid-immu2857
更新日期:2001-10-01 00:00:00
abstract::Injection of M-1 (Cmu), G-1 (Cgamma) heterozygous chickens on the day of hatch with anti-IgM-1 antiserum induced allotype suppression from which chickens recovered over a period of approximately 4 months. The suppression of the serum IgM-1 levels was matched by a decrease in the number of splenic and peripheral blood ...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830110407
更新日期:1981-04-01 00:00:00
abstract::T-cell development is a spatially and temporally regulated process, orchestrated by well-defined contributions of transcription factors and cytokines. Here, we identify the noncoding RNA miR-142 as an additional regulatory layer within murine thymocyte development and proliferation. MiR-142 deficiency impairs the expr...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.201746987
更新日期:2017-07-01 00:00:00
abstract::HLA-A2.1-binding peptides (n = 38) were screened for immunogenicity with human peripheral blood mononuclear cells in cytotoxic T lymphocyte (CTL) induction experiments in vitro and with splenocytes from HLA-A2.1/Kb transgenic mice following immunization in vivo. These data were compiled and analyzed to determine the l...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830260115
更新日期:1996-01-01 00:00:00
abstract::Surfactant protein A (SP-A) and surfactant protein D (SP-D) are collectins, and both proteins were shown to interact with influenza A virus and alveolar macrophages. However, it is not known whether SP-A and SP-D can serve as opsonins for the phagocytosis of influenza A virus by alveolar macrophages. In the present st...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830270413
更新日期:1997-04-01 00:00:00
abstract::In humans and mice, mucosal immune responses are dominated by IgA antibodies and the cytokine TGF-β, suppressing unwanted immune reactions but also targeting Ig class switching to IgA. It had been suggested that eosinophils promote the generation and maintenance of mucosal IgA-expressing plasma cells. Here, we demonst...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.201948474
更新日期:2020-06-01 00:00:00
abstract::Fourteen noncytotoxic human helper T cell clones were examined for autocrine proliferative responses and cytotoxicity to tumor cells after stimulation with 12-O-tetradecanoylphorbol 13-acetate (TPA) and ionomycin (Io). Although all clones responded to alloantigen, they could be divided into two groups based on their p...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830180729
更新日期:1988-07-01 00:00:00
abstract::Human T cell clones expressing the T cell receptor (TcR) gamma/delta were isolated from peripheral blood lymphocytes of two unrelated donors. The TcR gamma/delta+ clones derived from one of these donors were all of the Ti gamma A+, delta-TCS1-, BB3+ phenotype indicating the exclusive use of the V gamma 9 and V delta 3...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830191120
更新日期:1989-11-01 00:00:00
abstract::We analyzed the functional outcome of the interaction between tumor-associated macrophages (TAMs) and natural killer (NK) cells. TAMs from ascites of ovarian cancer patients displayed an alternatively activated functional phenotype (M2) characterized by a remarkably high frequency and surface density of membrane-bound...
journal_title:European journal of immunology
pub_type: 临床试验,杂志文章
doi:10.1002/eji.201344130
更新日期:2014-06-01 00:00:00