Abstract:
:The functional role of the T8 antigen of human T cells was studied by inhibition with anti-T8 monoclonal antibodies (mAb) of the cytotoxic action of T8+ cytotoxic T lymphocyte clones (CTL). All clones were allospecific and directed against HLA-B7. The ability of seven different anti-T8 mAb to inhibit the cytotoxicity of these alloreactive CTL clones corresponded with their avidity for a particular target cell. The lysis of cross-reactive antigen-bearing target cells was more readily blocked by anti-T8 mAb than lysis of the specific B7 target cell against which a clone was raised. The seven anti-T8 mAb showed a spectrum of CTL blocking ability ranging from strong blocking with all five CTL clones tested to weak inhibition of only two out of five clones. mAb inhibition of CTL reactivity and cold target inhibition studies with one of the five CTL clones indicate a post-binding role of the T8 molecule. Functional epitope mapping based on CTL blocking with the anti-T8 mAb resulted in the definition of one nonfunctional epitope on the T8 molecule which is only expressed on mature T lymphocytes and a cluster of closely related functional epitopes expressed on both thymocytes and mature T lymphocytes. Not only allospecific cytotoxicity, but also nonspecific cytotoxicity induced anti-T3 mAb in these allospecific clones was inhibited by anti-T8 mAb in the absence of HLA class I expression on the target cell (Daudi cell line). The hierarchy of blocking with anti-T8 mAb and the classification of functional epitopes on T8 in anti-T3-induced nonspecific cytotoxicity were similar to those obtained in blocking of allospecific reactivity of the CTL clones. This analogy points to an identical function of the T8 antigen in both allospecific and anti-T3-induced nonspecific cytotoxicity. If HLA class I molecules are the counter structures of the T8 antigen, then these results argue against an adhesion-like function of the T8 structure. The combined results show that the T8 molecule has a regulatory role in CTL activation. It is postulated that the T8 antigen might serve as a receptor that transduces a negative feedback signal for T cell activation which prevents T cell triggering by nonspecific interaction.
journal_name
Eur J Immunoljournal_title
European journal of immunologyauthors
Van Seventer GA,Van Lier RA,Spits H,Ivanyi P,Melief CJdoi
10.1002/eji.1830161109subject
Has Abstractpub_date
1986-11-01 00:00:00pages
1363-71issue
11eissn
0014-2980issn
1521-4141journal_volume
16pub_type
杂志文章abstract::Caspase recruitment domain-containing membrane-associated guanylate kinase protein-1 (CARMA1) is a critical component of the NF-kappaB signaling cascade mediated by TCR engagement. In addition to activation of naïve T cells, TCR signaling is important for the development of agonist-selected T-cell subsets such as Treg...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200838734
更新日期:2009-01-01 00:00:00
abstract::An abnormal protein, from a petient with mu-chain disease has been studied: protein BUR. It is devoid of the F (ab'')2 mu fragment; molecular weight determinations and immunological data identify the protein as a F(c) 5 mu fragment. Similarly, carbohydrate determinations and proteolysis experiments relate it to a Fcmu...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830050306
更新日期:1975-03-01 00:00:00
abstract::Autoimmune diseases including multiple sclerosis (MS) are the result of an imbalanced immune tolerance network. Dendritic cells (DCs) are key players in both initiating immunity (immunogenic DCs) and regulating immune responses (tolerogenic DCs = tolDCs) and are potential targets for the treatment of MS. While the imm...
journal_title:European journal of immunology
pub_type: 评论,杂志文章
doi:10.1002/eji.201242402
更新日期:2012-03-01 00:00:00
abstract::Endogenous superantigens (SAg) presented by MHC class II IA molecules induce slow-evolving negative selection of alpha beta T cells. The role of both B and gamma delta T cells on the regulation of these SAg-specific alpha beta T cell responses was addressed in IA(b+)IE(b-) C57BL/6 mice bearing genetically induced B ce...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/1521-4141(200109)31:9<2811::aid-immu2811>3
更新日期:2001-09-01 00:00:00
abstract::A reverse hemolytic plaque assay has been developed which specifically detects secretion of human immune interferon (Hu IFN-gamma) at the single cell level. Unstimulated peripheral blood lymphocytes from healthy adult volunteers spontaneously secreted IFN-gamma. Stimulation of these cells with concanavalin A, phytohem...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830130308
更新日期:1983-03-01 00:00:00
abstract::Tetanus toxin has been a valuable model antigen to study the MHC class II-restricted antigen processing pathway and is also frequently used to provide T helper determinants in vaccine formulations. To date most basic studies on the processing of this antigen have utilized human T and B cell clones. As a first step tow...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/1521-4141(200202)32:2<530::AID-IMMU530>3.0
更新日期:2002-02-01 00:00:00
abstract::T cells from human peripheral blood were enriched in T4+ cells by lysis of T8+ cells with the monoclonal antibody OKT8 plus complement. The T4+ subset was separated into 4 fractions differing in avidity for the lectin Helix pomatia A hemagglutinin (HP). The fractions were studied for their capacity to help autologous ...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830141108
更新日期:1984-11-01 00:00:00
abstract::It is now recognized that Th17 cells constitute the third effector arm of Th cells, complementing the Th1 and Th2 lineages. Although secretion of IL-17 is a primary defining characteristic of Th17 cells, the expression profile of specific chemokine receptors, cell surface molecules and cytokines are also part of the T...
journal_title:European journal of immunology
pub_type: 评论,杂志文章
doi:10.1002/eji.200939540
更新日期:2009-06-01 00:00:00
abstract::NK cells can kill transformed, infected and stressed cells while most normal cells are spared. NK cells are activated by various endogenous self-ligands, some of which are actually expressed by normal cells. Thus, NK cells are inherently self-reactive and consequently, potentially auto-aggressive. How these cells are ...
journal_title:European journal of immunology
pub_type: 杂志文章,评审
doi:10.1002/eji.200838755
更新日期:2008-11-01 00:00:00
abstract::The murine T cell clone D10.G4.1 can be induced to proliferate by monoclonal antibodies (mAb) to the T cell receptor (TcR) or to Thy-1 molecules. When cells were stimulated by anti-TcR mAb, a group of 4 proteins (19-25 kDa) was specifically phosphorylated. This effect was completely mimicked by the Ca2+ ionophore A231...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830180727
更新日期:1988-07-01 00:00:00
abstract::Histological techniques were used to identify antigen-presenting cells (APC) in adoptively transferred diabetes in NOD mice and Ins-HA transgenic mice, and in spontaneously diabetic NOD mice. In adoptively transferred disease, CD4+ T cells and F4/80+ macrophages dominated early infiltrates. By contrast, in spontaneous...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830230744
更新日期:1993-07-01 00:00:00
abstract::Antigen-specific CD4(+) T cells are central to natural and vaccine-induced immunity. An ongoing antigen-specific T-cell response can, however, influence surrounding T cells with unrelated antigen specificities. We previously observed this bystander effect in healthy human subjects following recall vaccination with tet...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200940017
更新日期:2010-04-01 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
pub_type: 杂志文章
doi:10.1002/eji.201040868
更新日期:2011-07-01 00:00:00
abstract::Cognate interactions between major histocompatibility complex class II antigen (Ag)-reactive CD4+ T helper (Th) and Ag-presenting B cells induce first the activation of B cells and their subsequent differentiation into Ig-secreting cells (IgSC). The Th cell-associated homodimeric glycoprotein CD28 has been implicated ...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830210527
更新日期:1991-05-01 00:00:00
abstract::A significant proportion of memory B cells home to bone marrow (BM) which is a major site of anamnestic antibody responses in mice. We hypothesized that memory T cells likewise accumulate in BM perhaps to provide help for antibody production, and that the compartment of CD4+ T cells in BM of unimmunized mice would be ...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/(SICI)1521-4141(199903)29:03<1051::AID-IMM
更新日期:1999-03-01 00:00:00
abstract::Durch Pflanzenkrankheiten entstehen weltweit hohe Ernteverluste. Eine der häufigsten Infektionen in der Familie der Kreuzb&luml;tengewächse wird durch den Pilz Plasmodiophora brassicae verursacht. Die Krankheit äußert sich in Form von Wurzeltumoren, den "Kohlherniegallen". Da es auf verseuchten Böden zu hohen Ernteaus...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/(sici)1521-415x(200001)30:1<14::aid-biuz14
更新日期:2000-01-01 00:00:00
abstract::Induction of optimal HIV-1-specific T-cell responses, which can contribute to controlling viral infection in vivo, depends on antigen processing and presentation processes occurring in DCs. Opsonization can influence the routing of antigen processing and pathways used for presentation. We studied antigen proteolysis a...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.201242935
更新日期:2013-06-01 00:00:00
abstract::Lymph node cells derived from A.TH or A.TL mice primed with beef cytochrome c show striking patterns of reactivity when assayed in vitro for antigen-induced T cell proliferation. Whereas cells from A.TH mice respond specifically to beef cytochrome c or peptides composed of amino acids 1-65 and 81-104, cells from A.TL ...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830110210
更新日期:1981-02-01 00:00:00
abstract::We have further characterized the in vitro phenotype and function of anergic and suppressive CD4(+)25(+) T cells. Following TCR ligation, DO.11.10 CD4(+)25(+) T cells suppress the activation of OT-1 CD8(+)25(-) T cells in an antigen nonspecific manner. Although suppression was seen when using a mixture of APC from bot...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/1521-4141(200208)32:8<2365::AID-IMMU2365>3
更新日期:2002-08-01 00:00:00
abstract::In contrast to previous studies, we report that heterologous anti-delta antibodies can act as a powerful multi-class humoral immunosuppressant. Primary direct plaque-forming cell (IgM) responses of BALB/c mice injected from birth with a rabbit anti-delta antiserum were reduced to 3% of control levels against a T-depen...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830160816
更新日期:1986-08-01 00:00:00
abstract::Cyclopentenone prostaglandins (CP-PG), such as prostaglandin A1 (PGA1) or 15-deoxy-Delta(12,14)-prostaglandin J2 (PGJ2), induce apoptosis in different cell types. PGJ2 is also a potent activator of the peroxisome proliferator-activated receptor-gamma (PPARgamma). We investigated whether PPARgamma regulates CP-PG-induc...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200324053
更新日期:2004-01-01 00:00:00
abstract::The expression and action of Fas/Fas ligand (FasL) in multiple sclerosis has been postulated as a major pathway leading to inflammatory demyelination. To formally test this hypothesis, C57BL/6-lpr and -gld mice, which due to gene mutation express Fas and FasL in an inactive form, were immunized with myelin oligodendro...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830271211
更新日期:1997-12-01 00:00:00
abstract::The causative agents of Lyme disease, Borrelia burgdorferi s.s., B. garinii, and B. afzelii, differ in their susceptibility to complement-mediated lysis. This phenomenon apparently depends on the expression of proteins termed complement regulator-acquiring surface proteins (CRASP) and their binding to the inhibitory p...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200323571
更新日期:2003-03-01 00:00:00
abstract::The present study was designed to elucidate the role of Valpha14(+) NKT cells in the host defense against pulmonary infection with Streptococcus pneumoniae using Jalpha281 gene-disrupted mice (Jalpha281KO mice) that lacked this lymphocyte subset. In these mice, pneumococcal infection was severely exacerbated, as shown...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200324254
更新日期:2003-12-01 00:00:00
abstract::Accumulating evidence suggests that Th17 cells and Tregs may exhibit development plasticity and that CD4(+) Tregs can differentiate into IL-17-producing T cells; however, whether Th17 cells can reciprocally convert into Tregs has not been described. In this study, we generated Th17 clones from tumor-infiltrating T lym...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.201040682
更新日期:2011-04-01 00:00:00
abstract::Activation pathways inducing the expression of the interferon (IFN)-gamma gene in a cytotoxic T lymphocyte (CTL) clone were studied for their effects on transcription and on mRNA stability. IFN-gamma was secreted by the CTL clone in response to the Ca2+ ionophore ionomycin when used in conjunction with either protein ...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830250405
更新日期:1995-04-01 00:00:00
abstract::Riboflavin, also known as vitamin B2 , is converted by riboflavin kinase (RFK) into flavin mononucleotide (FMN) and flavin adenine dinucleotide (FAD), which are essential cofactors of dehydrogenases, reductases, and oxidases including the phagocytic NADPH oxidase 2 (Nox2). Riboflavin deficiency is common in young adul...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.201343940
更新日期:2014-03-01 00:00:00
abstract::The generation of effective type 1 T helper (Th1)-cell responses is required for immunity against intracellular bacteria. However, some intracellular bacteria require interleukin (IL)-17 to drive Th1-cell immunity and subsequent protective host immunity. Here, in a model of Mycobacterium bovis Bacille Calmette-Guerin ...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.201141569
更新日期:2012-02-01 00:00:00
abstract::The second HLA-DR molecules, which are encoded by loci different from HLA-DRB1 are weakly polymorphic. Predominant alleles such as HLA-DRB3*0101, HLA-DRB4*0101 and HLA-DRB5*0101 are therefore interesting targets to define antigenic peptides with major impact for the entire population. Strikingly, they have been poorly...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/1521-4141(200106)31:6<1837::aid-immu1837>3
更新日期:2001-06-01 00:00:00
abstract::Missing-self-reactivity can be mimicked by blocking self-specific inhibitory receptors on NK cells, leading to increased rejection of syngeneic tumor cells. Using a mouse model, we investigated whether Ab-mediated blocking of inhibitory receptors, to a degree where NK cells rejected syngeneic tumor cells, would still ...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200939755
更新日期:2010-03-01 00:00:00