Abstract:
:Significant variability in efficacy of live Mycobacterium bovis BCG as a tuberculosis vaccine is observed globally. Effects of pre-vaccination sensitisation to non-tuberculous environmental mycobacteria (Env) are suspected to underlie this phenomenon, but the mechanisms remain unclear. We postulated that it could be due to Env-specific T cells exerting cytotoxicity against BCG-infected host cells. After murine sensitisation with heat-killed antigens of different Env species, splenocytes from M. chelonae (CHE)-sensitised mice exerted the strongest cytotoxicity against autologous BCG-infected macrophages. This cytotoxicity was correlated with reduced BCG viability. The cytotoxicity was reduced by the depletion of CD4(+), but not CD8(+) or CD56(+) cells, and CD4(+) cells showed higher percentage of cytotoxicity than CD4(-) cells, supporting a role for CD4(+) cells in CHE-induced, BCG-specific cytotoxicity. Additionally, this cytotoxicity was IFN-gamma, perforin and FasL dependent. After CHE-sensitisation and subsequent BCG intranasal infection, there was significant expansion of lung CD4(+) cells, the main cell type producing IFN-gamma. This was associated with 2- and 6-fold reductions in lung BCG counts 1 and 3 wk, respectively post- infection, relative to non-sensitised mice. This is the first report describing cytotoxicity against BCG-infected cells as a mechanism underlying the influence of Env sensitisation on subsequent BCG responses.
journal_name
Eur J Immunoljournal_title
European journal of immunologyauthors
Ho P,Zhang L,Wei X,Seah GTdoi
10.1002/eji.200838933subject
Has Abstractpub_date
2009-07-01 00:00:00pages
1841-9issue
7eissn
0014-2980issn
1521-4141journal_volume
39pub_type
杂志文章abstract::The simultaneous detection of Ig and theta on the surface of mouse lymphocytes permits the detection of four cell types (Ig-theta-, Ig-theta+, Ig+theta-, and Ig+theta+) which also have distinct electrophoretic profiles. All types are present in variable proportions in all lymphoid organs studied. Results obtained in c...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830050211
更新日期:1975-02-01 00:00:00
abstract::Chemokine receptors are important for recruiting leukocytes to sites of infection and may contribute to immune cell activation. The present study investigated the role of the chemokine receptor CCR2 in polymicrobial septic peritonitis. The results showed that peritoneal production of the CCR2 ligands CCL2 and CCL12 in...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200425294
更新日期:2004-12-01 00:00:00
abstract::Growing evidence suggests that some immune responses are mediated not only by conventional and distinct NK cells and CTL, but also by T cell subsets expressing NK receptors and NK cell-associated molecules. Consistent with our previously published finding that the mAb 1F8 identifies non-T/non-B cells in Xenopus that e...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/1521-4141(200206)32:6<1574::AID-IMMU1574>3
更新日期:2002-06-01 00:00:00
abstract::Wiskott-Aldrich syndrome (WAS) is an X-linked disorder characterized by congenital thrombocytopenia and progressive deterioration of the immune function. Dendritic cells (DC) are key effectors in the induction of specific immunity and are highly specialized in antigen uptake and subsequent migration to draining lymph ...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/1521-4141(200112)31:12<3413::aid-immu3413>
更新日期:2001-12-01 00:00:00
abstract::Experimental autoimmune encephalomyelitis, an experimental murine model for multiple sclerosis, is induced by stimulation of myelin-specific T lymphocytes. Myelin oligodendrocyte glycoprotein (MOG), a minor component of myelin proteins, is a potent autoantigen which contributes extensively to the anti-myelin response....
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200535021
更新日期:2006-03-01 00:00:00
abstract::Cell suspensions enriched for N cells, the effector cell for human natural cell-mediated cytotoxicity, were observed to react strongly with a rabbit antiserum directed against an antigen associated with B cells. Treatment of the effector suspension with the antiserum resulted in inhibition of natural cell-mediated cyt...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830071016
更新日期:1977-10-01 00:00:00
abstract::CBA/N mice have an X-linked immune defect in B lymphocyte function which leads to their inability to respond to several thymus-independent antigens. We report here that these mice and immunologically defective F1 male (CBA/N X DBA/2N) mice can respond to Brucella abortus and to 2,4,6-trinitrophenyl derivatives of Bruc...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830080703
更新日期:1978-07-01 00:00:00
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-presentin...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830270716
更新日期:1997-07-01 00:00:00
abstract::The progression of experimental allergic encephalomyelitis (EAE) in certain mouse strains has been reported to involve a broadening of the response to myelin antigens, apparently resulting from priming to endogenous determinants of the myelin sheath. The phenomenon has been termed determinant spread. Interest in this ...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830271127
更新日期:1997-11-01 00:00:00
abstract::Gradual depletion of CD4+ T cells is a typical characteristic of pathogenic SIV infection. Intriguingly, we find a spontaneous CD4+ T-cell homeostasis in northern pig-tailed macaques (Macaca leonina) during SIVmac239 infection. ...
journal_title:European journal of immunology
pub_type: 信件
doi:10.1002/eji.201747284
更新日期:2018-02-01 00:00:00
abstract::Plasticity and heterogeneity are hallmarks of myelomonocytic differentiation and polarized activation. Evidence published in this issue of the European Journal of Immunology, together with other recent data, add new elements and perspectives to the current understanding of mononuclear phagocyte differentiation and act...
journal_title:European journal of immunology
pub_type: 评论,杂志文章,评审
doi:10.1002/eji.200636910
更新日期:2007-01-01 00:00:00
abstract::We have investigated perforin and granzyme B expression in graft-infiltrating lymphocytes of patients who underwent heart transplantation. Those proteins are commonly present in the cytoplasmic granules of cytotoxic T lymphocytes and are released upon effector-target cell interaction. From 28 patients 103 endomyocardi...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830240136
更新日期:1994-01-01 00:00:00
abstract::The monoclonal antibody W6/32.1 recognizes a public determinant on the HLA-A, B and C antigens of all tested human haplotypes. Though the antibody does not bind to normal mouse cells of any H-2 haplotype, it does show an unexpected specificity for the T cell leukemia line MBL-2 from a C57BL/6 mouse. It is shown that t...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830130213
更新日期:1983-02-01 00:00:00
abstract::Autoantigenic epitope mapping represents a critical issue in autoimmune diseases. The islet tyrosine phosphatase-like protein IA-2/ICA512bdc is a major autoantigen in type 1 diabetes (IDDM), but the epitopes responsible for autoantibody binding have been only partially defined. The aim of our study was to identify ICA...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/1521-4141(200205)32:5<1420::AID-IMMU1420>3
更新日期:2002-05-01 00:00:00
abstract::Hypersensitivity to nickel (Ni) represents the most common manifestation of contact allergy in humans. The role of metal-specific T cells in this disease is well established, but the molecular interactions involved in their activation are poorly understood. We examined the T cell receptor (TCR) repertoire in T cells a...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830270808
更新日期:1997-08-01 00:00:00
abstract::The CD38 antigen displays restricted functional associations with surface molecules involved in immune system and complement. Capping of the CD38 molecule in normal or neoplastic T cells is followed by rapid and specific co-modulation of the CD3-T cell receptor (TcR) complex. In normal and tumor cells of B lineage, CD...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830231005
更新日期:1993-10-01 00:00:00
abstract::To elucidate the mechanism of autoimmune disease in neonatally thymectomized (NTX) mice, we have investigated the responsiveness of the self-reactive T cells which have not undergone clonal deletion in such animals. Consistent with a recent report (Yuuki et al., Eur. J. Immunol. 1990. 20: 1475), T cells bearing V beta...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830210310
更新日期:1991-03-01 00:00:00
abstract::By immunizing Lewis rats with myelin basic protein (MBP) peptide variants derived from the major encephalitogenic epitope of guinea pig (MBP(68-88) and then isolating encephalitogenic T cells from these animals, we demonstrated that the variant peptides do not elicit the same encephalitogenic T cell subsets as those i...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830250631
更新日期:1995-06-01 00:00:00
abstract::The interaction of KB-V1, a multidrug resistant (MDR) variant of the KB-3-1 human oral carcinoma, with human complement was investigated. KB-V1 cells were found to be more sensitive than KB-3-1 cells to complement-mediated lysis. Detailed analysis of the capacity of KB cells to activate human complement demonstrated t...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830270913
更新日期:1997-09-01 00:00:00
abstract::Patients undergoing allogeneic bone marrow transplantation offer a unique system to analyze NK cell development in vivo. We analyzed NK cells from 23 such patients to assess the acquisition of activating receptors. Four patients displayed an immature NK cell surface phenotype at engraftment, as their cells were CD16(-...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200324668
更新日期:2004-02-01 00:00:00
abstract::Resistance and susceptibility to the intestinal nematode Trichuris muris has been shown to be dependent upon the induction of T helper type 2 (Th2) or Th1 cells, respectively. This study demonstrates that in a normally resistant strain of mouse, i.e. BALB/K which mounts a dominant Th2 response, sub-threshold levels of...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830241230
更新日期:1994-12-01 00:00:00
abstract::Ligation of interleukin 2 (IL2) is known to regulate both protein tyrosine and serine/threonine phosphorylation. A family of leukocyte transmembrane proteins whose cytoplasmic domain exhibits intrinsic protein tyrosine phosphatase activity is collectively called CD45 and is identified by a set of common cell surface e...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830210438
更新日期:1991-04-01 00:00:00
abstract::It has been reported that, following the initial expression of the T cell receptor (TcR) alpha/beta, newly generated thymocytes pass through a developmental window characterized by ineffective coupling between the alpha/beta and CD3 components resulting in resistance to deletion (negative selection). However, we now p...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830201125
更新日期:1990-11-01 00:00:00
abstract::The early-life immune environment has been implicated as a modulator of acute lymphoblastic leukemia (ALL) development in children, with infection being associated with significant changes in ALL risk. Furthermore, polymorphisms in several cytokine genes, including IL-10 and IFN-γ, are associated with leukemia develop...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.201646806
更新日期:2017-05-01 00:00:00
abstract::T-follicular helper (TFH) cells represent the subpopulation of CD4(+) T cells that provides help for antigen-specific B cells in the GC response. They are generated from naïve T cells during an immune response and are imprinted by their master transcription factor Bcl-6. It has been a long-standing question if TFH ce...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.201242540
更新日期:2012-08-01 00:00:00
abstract::Mitochondria are master regulators of metabolism. Mitochondria generate ATP by oxidative phosphorylation using pyruvate (derived from glucose and glycolysis) and fatty acids (FAs), both of which are oxidized in the Krebs cycle, as fuel sources. Mitochondria are also an important source of reactive oxygen species (ROS)...
journal_title:European journal of immunology
pub_type: 杂志文章,评审
doi:10.1002/eji.201445427
更新日期:2016-01-01 00:00:00
abstract::The molecular mechanisms leading to anti-double-stranded (ds) DNA antibody production in systemic lupus erythematosus (SLE) are poorly understood. We describe here the immunoglobulin variable region genes of six human hybridomas secreting IgG anti-dsDNA antibodies derived from three SLE patients. The monoclonal IgG an...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830220709
更新日期:1992-07-01 00:00:00
abstract::Mice lacking the tumor suppressor gene p53 spontaneously develop T-cell lymphomas at a high rate, suggesting that in these mice lymphomas arise due to defective apoptosis mechanisms in T cells mediated by p53. However, a role of p53 in regulation of T-cell responses or apoptosis has been poorly defined. TCR-mediated s...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200939736
更新日期:2010-02-01 00:00:00
abstract::We analyzed the avidity and CD28-mediated co-stimulatory requirements for the activation of T cells in vivo and in vitro. The strength of the T cell/antigen-presenting cell interaction was varied by using altered peptide ligands for stimulation. Co-stimulatory requirements were studied using T cells from CD28-deficien...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830260908
更新日期:1996-09-01 00:00:00
abstract::Secretion of proinflammatory mediators by activated macrophages plays an important role in the immune response to Trypanosoma cruzi. We have previously reported that AgC10, a glycosylphosphatidylinositol-anchored mucin from T. cruzi, inhibits TNF secretion by activated macrophages (de Diego, J., Punzon, C., Duarte, M....
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200324660
更新日期:2004-06-01 00:00:00