Abstract:
:The existence of a functional receptor for secretory component (SC) on the eosinophil membrane might explain the preferential degranulation induced by secretory IgA (sIgA) when compared to serum IgA. Indeed, flow cytometry analysis revealed that purified human SC could bind to a subpopulation (4-59%) of blood eosinophils purified from 19 patients with eosinophilia. Binding of radiolabeled human SC could be competitively inhibited using unlabeled SC or secretory IgA but not with serum IgA or IgG. Immunoprecipitation and immunosorbent chromatography using human SC revealed the presence of a major component at 15 kDa in eosinophil extracts as well as in culture supernatants but not in neutrophils. The 15-kDa protein eluted from the human SC immunosorbent was able to bind to SC or to sIgA but not to serum IgA. Eosinophils preincubated with human SC or sIgA released eosinophil cationic protein (ECP) and eosinophil peroxidase (EPO) after addition of anti-SC or anti-IgA monoclonal antibody as respective cross-linking reagents. These results indicated that binding of free or complexed SC to human eosinophils could induce eosinophil degranulation. Furthermore, the dose-dependent inhibition by SC of mediator release induced by sIgA but not by serum IgA, suggested that the receptor for SC could be involved in the preferential degranulation mediated by sIgA. These results indicate a novel pathway of eosinophil activation and its potential involvement in mucosal immunity, particularly in inflammatory diseases associated with infiltration of eosinophils and the enhanced production of sIgA.
journal_name
Eur J Immunoljournal_title
European journal of immunologyauthors
Lamkhioued B,Gounni AS,Gruart V,Pierce A,Capron A,Capron Mdoi
10.1002/eji.1830250121subject
Has Abstractpub_date
1995-01-01 00:00:00pages
117-25issue
1eissn
0014-2980issn
1521-4141journal_volume
25pub_type
杂志文章abstract::Dermal and mucosal lymphocyte infiltrates in patients with lichen ruber planus and chronic graft-vs.-host disease exhibited reactivity with anti-fibronectin antibodies. This reactivity was associated with the lymphocytes and localized pericellularly. In contrast, biopsy areas outside lymphocyte accumulations were rela...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830210209
更新日期:1991-02-01 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
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abstract::T cell receptor (TCR) down-regulation is a consequence of specific receptor engagement and plays an important role in modulating the T cell response. We have investigated the role of protein kinase C (PKC) and protein tyrosine kinases (PTK) in the induction of TCR down-regulation. We report that the mutation of S126 i...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830270726
更新日期:1997-07-01 00:00:00
abstract::T cell receptor (TCR) genes are initially activated in hematopoietic stem cells that have been committed to the T cell lineage during ontogeny. We have established cell lines derived from hematopoietic organs which express truncated TCR delta mRNA (1.3 kbp). In this study, cDNA clones of this mRNA were analyzed to cha...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830250611
更新日期:1995-06-01 00:00:00
abstract::MRL/MP-lpr/lpr mice are homozygous for the lpr mutation that results in the accumulation of phenotypically abnormal cells (CD3+CD4+CD8-) in all lymphoid issues. Although no major abnormalities in the T cell receptor repertoire expressed by such lpr cells have been reported, the lpr mutation is a major disease-accelera...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830220432
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journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830220207
更新日期:1992-02-01 00:00:00
abstract::All leukocytes express the cell surface glycoprotein CD45, which has intrinsic intracellular protein tyrosine phosphatase activity. CD45 is known to play a regulatory role in activation-induced signaling in lymphocytes; however, little is known of its role in non-lymphoid leukocytes. Therefore, we examined the potenti...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/(SICI)1521-4141(199905)29:05<1467::AID-IMM
更新日期:1999-05-01 00:00:00
abstract::Gene targeting in hybridoma cells provides a tool for generating chimeric antibodies with great ease and at high yield. We present an evaluation of integration vectors for the chimerization of the immunoglobulin heavy chain locus which are universally applicable to hybridomas of different isotypes and mouse strains. T...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830250325
更新日期:1995-03-01 00:00:00
abstract::Acute and chronic airway inflammations caused by environmental agents including endotoxin represent an increasing health problem. Local TNF production may contribute to lung dysfunction and inflammation, although pulmonary neutrophil recruitment occurs in the absence of TNF. First, we demonstrate that membrane-bound T...
journal_title:European journal of immunology
pub_type: 杂志文章
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更新日期:2007-03-01 00:00:00
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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::In the lung, dendritic cells (DC) are key antigen-presenting cells capable of triggering specific cellular responses to inhaled pathogens, and thus, they may be important in the initiation of an early response to mycobacterial infections. The ability of DC to enhance antigen presentation to naive T cells within the lu...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/(SICI)1521-4141(199906)29:06<1972::AID-IMM
更新日期:1999-06-01 00:00:00
abstract::Glomerular crescent formation characterizes severe glomerulonephritis (GN). Evidence suggests that crescent formation results from a delayed-type hypersensitivity-like Th1 response. As IL-12 directs Th1 responses, we tested the hypothesis that IL-12 is important in crescentic GN. Neutralization of IL-12 attenuated cre...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/(SICI)1521-4141(199901)29:01<1::AID-IMMU1>
更新日期:1999-01-01 00:00:00
abstract::The expression of IgG Fc receptor (FcR) molecules was examined on Ly-1+ B cells and B cells tumors. FcR molecules were found on a representative Ly-1+ B cell lymphoma of the pre-B and as well as of the mature cell B phenotypes. The expression of the FcR did not change on these cells during their differentiation to B c...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830170621
更新日期:1987-06-01 00:00:00
abstract::Just over a decade ago, it was established that NK cells in the thymus do not follow precisely the same developmental pathway as conventional NK cells that develop in the bone marrow. Subsequently, it has emerged that NK cells are one branch of a family of innate lymphoid cells (ILCs). ILC1s and thymic NK cells have, ...
journal_title:European journal of immunology
pub_type: 评论,杂志文章
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更新日期:2017-05-01 00:00:00
abstract::Upon antigen-specific or allogeneic activation, T cells sharply increase their metabolic activity to cope with augmented needs for proliferation and effector functions. Therefore, enzymes involved in energy metabolism constitute attractive targets to modulate the activity of pathogenic effector T cells in the setting ...
journal_title:European journal of immunology
pub_type: 杂志文章
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更新日期:2016-09-01 00:00:00
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journal_title:European journal of immunology
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doi:10.1002/eji.200322952
更新日期:2003-06-01 00:00:00
abstract::Th1 and Th2 cells, which produce distinct sets of cytokines, differentially express several chemokine receptors that may regulate their tissue-specific localization. Although the expression pattern and regulation of chemokines are likely to play a critical role in many immunopathological processes, they remain largely...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/(SICI)1521-4141(200004)30:4<1030::AID-IMMU
更新日期:2000-04-01 00:00:00
abstract::To clarify reasons of the constant presence of IgM in human cord blood, some functions of this immunoglobulin class were analyzed. Cord IgM was collected from cord blood, and the cord IgM F(ab')2 fragment was obtained by trypsin cleavage. Maternal T and adult T cells were stained with fluorescein isothiocyanate (FITC)...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830110208
更新日期:1981-02-01 00:00:00
abstract::Dendritic cells (DC) are the main orchestrators of specific immune responses. Depending on microbial information they encounter in peripheral tissues, they promote the development of Th1, Th2 or unpolarized Th cell responses. In this study we have investigated the immunomodulatory effect of non-pathogenic intestinal G...
journal_title:European journal of immunology
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journal_title:European journal of immunology
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abstract::Mutations in PTEN-induced kinase 1 (PINK1), a serine/threonine kinase linked to familial early-onset Parkinsonism, compromise mitochondrial integrity and metabolism and impair AKT signaling. As the activation of a naïve T cell requires an AKT-dependent reorganization of a cell's metabolic machinery, we sought to deter...
journal_title:European journal of immunology
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abstract::Lymphoid follicles of the ileal Peyer's patch (PP) of young sheep function as the major source of B cells and a site of immunoglobulin (Ig) receptor diversification. However, extensive cell death in culture has restricted investigations of ileal PP follicular (iPf)B cell biology. We investigated the possibility that s...
journal_title:European journal of immunology
pub_type: 杂志文章
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更新日期:1994-02-01 00:00:00
abstract::The inducible B cell lymphoma, CH12, and its in vitro adapted subclone, CH12-LBK, produce immunoglobulins of identical sequence, specificity and isotype, with equivalent affinities for the hapten trimethyl ammonium. However, the hemolytic efficiencies of the antibody secreted by the two cell lines are quite different....
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830200915
更新日期:1990-09-01 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
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更新日期:2016-01-01 00:00:00
abstract::The essential role of the transcription factor Foxp3 in the development and function of Treg has been well documented. The role of Foxp3 in non-Treg, however, is not fully understood. Emerging evidence indicates that Foxp3 expression is not confined to CD4+CD25+ Treg. The present study shows that in Foxp3 transgenic (...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200939404
更新日期:2010-01-01 00:00:00
abstract::Naive and memory CD4 T cells differ in cell surface phenotype, function, activation requirements, and modes of regulation. To investigate the molecular bases for the dichotomies between naive and memory CD4 T cells and to understand how the T cell receptor (TCR) directs diverse functional outcomes, we investigated pro...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830270838
更新日期:1997-08-01 00:00:00
abstract::Previous studies have suggested that T-lymphocyte dysfunction might be attributable to nitrative stress induced by reactive nitrogen species (RNS). In this manuscript, we explored this hypothesis and provided a direct demonstration of the inhibitory effects of RNS on human T-cell signaling, activation, and migration. ...
journal_title:European journal of immunology
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更新日期:2011-07-01 00:00:00
abstract::T cell activation and cytokine secretion are important mediators of inflammation in allergic asthma. The costimulatory pathway CD28/CD80/CD86 has been shown to play an important role in T cell activation in allergic asthma, but less is known about the effect of other costimulatory molecules in allergy. The costimulato...
journal_title:European journal of immunology
pub_type: 杂志文章
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更新日期:2002-10-01 00:00:00
abstract::Lymphocyte function-associated-antigen-1 (LFA-1) is able to bind selectively to its ligands intercellular adhesion molecules 1 and 3 (ICAM-1 and ICAM-3), suggesting that LFA-1 can exist in distinct ligand-specific binding states. In the case of ICAM-1, apart from ligand itself and the recently cloned molecule cytohesi...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830270423
更新日期:1997-04-01 00:00:00
abstract::The influence of muramyl dipeptide (N-acetylmuramyl-L-alanyl-D-isoglutamine) on the rejection of mouse skin allografts was investigated. While the 0.1-mg dose administered on days 7, 6, 5 prior to transplantation caused significant prolongation of the graft survival, the 0.5-mg dose administered on days 3, 2, 1 prior ...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830131015
更新日期:1983-10-01 00:00:00