Abstract:
:Major histocompatibility complex (MHC) class II molecules have been implicated in cell adhesion in two ways. In addition to the well-established role of class II antigens in low-affinity adhesion provided by interactions between class II and CD4, recent data indicated that class II may also induce adhesion between T and B cells by activating the CD18/CD11a (LFA-1) adhesion pathway. Here we report that monoclonal antibodies (mAb) against HLA-DR (L243, p4.1, HB10a, VI15) and certain broad class II reacting mAb (TU35, TU39), but not anti-DQ (TU22, Leu-10) mAb, induced homotypic aggregation of human class II-positive monocytic (I937) and T leukemic (HUT78) tumor cell lines and Epstein-Barr virus (EBV) transformed B-lymphoid cell lines (EBV-LCL). Class II-negative cell lines (U-937 and the EBV-LCL mutant line 616) were not induced to aggregate. An HLA-G-transfected EBV-LCL, 221-AGN, but not the class I-negative parental line, 221, showed homotypic aggregation in response to an HLA-G specific mAb (87G) and a broad reacting class I-specific mAb (IOT2). Both cell lines responded with aggregation to anti-class II mAb (TU35). The anti-class I mAb, W6/32, had no effect on all cell lines tested and two anti-beta 2-microglobulin mAb had variable, weak effects. The aggregation response was an active, temperature-sensitive process which was almost totally abrogated by azide and by cytochalasins B and E, but unaffected by colchicine, EDTA, aphidicolin, actinomycin D and protein tyrosine kinase inhibitors (genistein, herbimycin A). Serine/threonine protein kinase inhibitors (staurosporin, H7) partly inhibited the aggregation responses. There was no strict correlation between induction of aggregation and epitope density. FcR were not involved in the aggregation response, since F(ab')2 fragments of anti-DR mAb, L243, were as effective as the whole antibody. The aggregation was not influenced by mAb against accessory molecules previously shown to be involved directly or indirectly in homotypic aggregation [CD11a (LFA-1)/CD18/CD54 (ICAM-1), CD58 (LFA-3)/CD2, BB1/CD28, CD43, and CD44]. In conclusion, these data provide further evidence that HLA molecules are implicated in a novel, cellular aggregation phenomenon involving the cytoskeleton.
journal_name
Eur J Immunoljournal_title
European journal of immunologyauthors
Odum N,Ledbetter JA,Martin P,Geraghty D,Tsu T,Hansen JA,Gladstone Pdoi
10.1002/eji.1830210921subject
Has Abstractpub_date
1991-09-01 00:00:00pages
2121-31issue
9eissn
0014-2980issn
1521-4141journal_volume
21pub_type
杂志文章abstract::The objective of the present investigation was to culture helper or suppressor/cytotoxic T cell subsets after extensive purification in interleukin 2-containing medium to determine whether phenotype changes for OKT4/91d6- or OKT8/Leu-2a-defined antigens do occur with prolonged culture. Repeated and sequential analysis...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830140819
更新日期:1984-08-01 00:00:00
abstract::Radiolabeled protein A from Staphylococcus aureus (SpA) injected i.v. into mice and rabbits forms a soluble [(IgG)2-(SpA)1]2 complex (Mr = 684 000) which is identical in composition to that formed by SpA in vitro with an equivalent amount or an excess of IgG. A soluble rabbit IgG-SpA complex injected into a mice or ra...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830130802
更新日期:1983-08-01 00:00:00
abstract::The present study demonstrates that the C3b receptor CR1 (CD35) and the C3dg/Epstein-Barr virus receptor CR2 (CD21) are expressed by 25% and 70% of normal human thymocytes, respectively. The expression of CR2 extends to both CD1+ and CD1- cells in the thymus. Two subsets of CR2+ thymocytes were defined expressing low ...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830241131
更新日期:1994-11-01 00:00:00
abstract::This study was conducted to further characterize the effector cells of experimental allergic encephalomyelitis (EAE) which are activated in vitro when spleen cells from Lewis rats previously immunized with myelin basic protein and adjuvant are cultured with antigen prior to transfer to syngeneic recipients. The effect...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830120519
更新日期:1982-05-01 00:00:00
abstract::Antigen-induced stimulation of T cells is mediated via the CD3 antigen receptor (Ti) complex and monoclonal antibodies (mAb) reacting with CD3 and Ti result in rapid intracellular Ca2+ mobilization, followed by monocyte-dependent proliferation. Combinations of mAb to CD2, the sheep red blood cell receptor, also mobili...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830160521
更新日期:1986-05-01 00:00:00
abstract::Defined tumor-associated antigens (TAA) are attractive targets for anti-tumor immunotherapy. Here, we describe a novel genome-wide approach to identify multiple TAA from any given tumor. A panel of transplantable thymomas was established from an inbred p53-/- mouse strain. The resulting tumors were examined for gene e...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/1521-4141(200104)31:4<1239::aid-immu1239>3
更新日期:2001-04-01 00:00:00
abstract::The proteins p40 (Mr = 40 000), p32 (Mr = 32 000), p28 (Mr = 28 000), p20 (Mr = 20 000) and p10 (Mr = 10 000) are described which occur in noncovalent association with the polymorphic alpha, beta heterodimer of class II antigens. They were investigated with respect to their molecular characteristics and their mutual s...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830140606
更新日期:1984-06-01 00:00:00
abstract::F liver protein occurs in serum at low concentration, and therefore induces tolerance of self only in T cells. T cells which mature in cultured thymus lobes in the absence of this protein become reactive towards it but can be prevented from doing so by exposure to the protein while in culture. The threshold of toleran...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830220130
更新日期:1992-01-01 00:00:00
abstract::Brain invasion by Borrelia burgdorferi, the agent of Lyme disease, results in an inflammatory and neurodegenerative disorder called neuroborreliosis. In humans, neuroborreliosis has been correlated with enhanced concentration of glial fibrillary acidic protein in the cerebrospinal fluid, a sign of astrogliosis. Rhesus...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200323872
更新日期:2003-09-01 00:00:00
abstract::Major histocompatibility complex (MHC) class I and II products are specialized to present antigens via different intracellular processing routes. Peptides originating from proteins in the cytoplasm can gain access to class I peptide-binding grooves, most likely in the rough endoplasmic reticulum. Peptides from protein...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830231104
更新日期:1993-11-01 00:00:00
abstract::The relative complement-mediated lytic capability of the IgG subclass isotypes was studied using a matched set of mouse-human chimeric anti-(4-hydroxy-3-nitrophenyl)acetyl (NP) antibodies. The subclass pattern was shown to be highly dependent on variations in antigen concentration and to lesser extent on variation in ...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830210103
更新日期:1991-01-01 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 transcription factor c-Maf is critical for IL-4 production and the development of Th2 cells, which promote humoral immunity and protect against extracellular parasites. Yet, little else is known of c-Maf function in CD4 cells. Here, we identify a novel role for c-Maf in regulating susceptibility to apoptosis. Over...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200636979
更新日期:2007-10-01 00:00:00
abstract::The infiltration and activation of monocytes is a hallmark of chronic inflammation, including that associated with a variety of disease states such as rheumatoid arthritis, atherosclerosis, and various autoimmune conditions. Recently, a family of small molecular mass proteins has been described which appear to have in...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830220621
更新日期:1992-06-01 00:00:00
abstract::Immunocompetent adult mice infected with lymphocytic choriomeningitis virus (LCMV) generate a strong antiviral cytotoxic T cell response that clears virus from all organs. Although there is good evidence that immune cytotoxic T lymphocytes (CTL) kill target cells in vitro, in vivo it is debated whether antiviral activ...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830230722
更新日期:1993-07-01 00:00:00
abstract::It has been shown previously that three different H-2-associated genes control the resistance to viremia and leukemia in Moloney virus-infected mice: Rmv. 1, mapping to the I-A or less probably K regions; Rmv. 2, mapping to the I-C, S or G regions and Rmv. 3, mapping to the D or T regions. Experiments have been perfo...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830101205
更新日期:1980-12-01 00:00:00
abstract::The pathogenesis of immune-mediated drug-induced liver injury (DILI) following halogenated anesthetics, carbamazepine or alcohol has not been fully elucidated. Detecting cytochrome P450 2E1 (CYP2E1) IgG4 auto-antibodies in anesthetic DILI patients suggests a role for IL-4 in this hapten-mediated process. We investigat...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200838135
更新日期:2009-06-01 00:00:00
abstract::Maintenance of peripheral tolerance and inactivation of autoreactive T cells is based on a delicate balance between pro-inflammatory and protective cytokines that is poorly understood. We have here addressed how the local expression of the inflammatory cytokine TNF-alpha can impair peripheral tolerance and lead to aut...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200323328
更新日期:2003-05-01 00:00:00
abstract::Two monoclonal anti-idiotypic antibodies (HP-Id20 and HP-Id22) recognizing two different public idiotopes expressed in the anti-poly(Glu60,Ala30,Tyr10) (GAT) response were used to immunize BALB/c and C57BL/6 mice. From these animals hybridomas were isolated. From BALB/c and C57BL/6 mice eight and seven monoclonal anti...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830150609
更新日期:1985-06-01 00:00:00
abstract::The production of IL-10, a potent immunosuppressive cytokine, must be strictly regulated to ensure a balanced immune response. IFN-γ, a key cytokine in multiple immune processes and pathologies, is known as an inhibitor of IL-10 production by monocytes and macrophages, but also has some regulatory functions. In the pr...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.201847578
更新日期:2018-09-01 00:00:00
abstract::Activation of mature CD8+ T cells requires recognition, via the T cell receptor (TCR), of peptide + MHC (pMHC) complexes with an avidity that exceeds a designated threshold. Multiple indicators of T cell avidity have been described that provide unique information on the characteristics of T cell interactions. However,...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200636390
更新日期:2006-11-01 00:00:00
abstract::The pathways of human anti-pig T cell xenorecognition have been investigated. Freshly isolated porcine alveolar lavage (AL) cells induced primary proliferative responses by human peripheral and cord blood mononuclear cells which were inhibited by anti-HLA-DR antibody (indirect xenorecognition). Following over-night cu...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830260630
更新日期:1996-06-01 00:00:00
abstract::Human cytomegalovirus (CMV) infection can be life threatening in the immune compromised and is associated with congenital defects and / or mental retardation in the neonate. The demonstrated association between CMV infection and rheumatoid factor (RF) raised the possibility of an induction of an autoimmune response up...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/(SICI)1521-4141(199911)29:11<3643::AID-IMM
更新日期:1999-11-01 00:00:00
abstract::Spontaneous cytolytic activity of shark peripheral blood leukocytes is observed only during periods of decreased environmental temperature (less than 23 degrees C). The effector cell is adherent to glass and is phagocytic. Leukocytes tested during warmer periods (26-31 degrees C) exhibit no spontaneous activity; howev...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830130208
更新日期:1983-02-01 00:00:00
abstract::A simple and efficient procedure for the construction of bifunctional molecules is described and their use in a variety of applications documented. This procedure is based on our observation that mouse IgG1 monoclonal antibodies, when mixed with equimolar amounts of a high-affinity rat monoclonal antibody specific for...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830160615
更新日期:1986-06-01 00:00:00
abstract::B cells have multiple functions in adaptive immunity, including antibody production, antigen presentation and regulation of T-cell responses. Recent evidences indicate that B cells have more subsets than previously thought and may have non-classical functions, such as involvement in innate immunity and immune regulati...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.201040840
更新日期:2011-03-01 00:00:00
abstract::The V beta 8.3-specific superantigenic lectin Urtica dioica agglutinin (UDA) was used to delete the V beta 8.3+ T cells in MRL lpr/lpr mice. In contrast to the systemic lupus erythematosus-like pathology which progresses with age in the phosphate-buffered saline-injected MRL lpr/lpr controls, UDA-treated animals did n...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830260807
更新日期:1996-08-01 00:00:00
abstract::AMD3100 (plerixafor), is a specific CXCR4 antagonist approved by the FDA for mobilizing hematopoietic stem cells from bone marrow to blood for transplantation in cancer. AMD3100 also mobilizes most mature leukocyte subsets to blood; however, their source and trafficking potential have not been fully delineated. Here, ...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.201445245
更新日期:2015-06-01 00:00:00
abstract::Although alterations in CD3-associated signal-transducing molecules in tumor-infiltrating T cells of patients with advanced cancer have been previously described, the mechanism behind these changes is not known. We demonstrate that macrophages isolated from metastatic lymph nodes of patients with malignant melanoma do...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830260620
更新日期:1996-06-01 00:00:00
abstract::We tested the effect of interferon (IFN)-alpha on the specific anti-2,4,6-trinitrophenyl (TNP) response induced by TNP-conjugated polyacrylamide beads in cultures of purified human B cells. IFN-alpha alone had no effect. Interleukin 2 (IL2) alone had a restorative effect which could be considerably (10X) enhanced by I...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830180912
更新日期:1988-09-01 00:00:00