Abstract:
:A number of applications of antibodies in diagnosis and therapy require multivalent reagents either because of the polymeric nature of the antigens or because biological activity depends on an effect on the formation of homodimeric species. Here, we report a procedure for mass screening of phage-derived monomeric antibody fragments that depend on valency for activity. As a model system, a set of 13 phage-derived human Fab fragments were first selected against mouse and human recombinant hepatocyte growth factor/scatter factor (HGF/SF), a high molecular weight polypeptide growth factor related to the blood protease plasminogen and involved in development and cancer. These Fab fragments were subsequently screened for an effect on HGF/SF activity either as monomeric fragments or after dimerization with a monoclonal antibody (9E10) directed against a peptide tag on the fragments. Fab were identified that either inhibited or enhanced HGF/SF activity on target cell lines, but dimerization was required for this effect. The approach proposed should facilitate mass screening of phage-derived antibody fragments that depend on multiple valency for activity.
journal_name
Eur J Immunoljournal_title
European journal of immunologyauthors
Zaccolo M,Griffiths AP,Prospero TD,Winter G,Gherardi Edoi
10.1002/eji.1830270307subject
Has Abstractpub_date
1997-03-01 00:00:00pages
618-23issue
3eissn
0014-2980issn
1521-4141journal_volume
27pub_type
杂志文章abstract::5'-Nucleotidase/CD73 is a key enzyme in the regulation of purinergic signaling, hydrolyzing extracellular AMP to produce adenosine, which is critical in the blood vascular system and in immunosuppression. CD73 is expressed by both blood endothelial cells and lymphatic endothelial cells. Although the role of CD73 on bl...
journal_title:European journal of immunology
pub_type: 评论,杂志文章
doi:10.1002/eji.201445400
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abstract::The effect of cyclosporin A (CsA) on the delayed-type hypersensitivity (DTH) elicited in mice by sheep red blood cells was investigated. Evidence is presented that a single injection of CsA adversely affects the inflammatory reaction. Sensitized T lymphocytes initiate the DTH reaction by their recruiting activity on p...
journal_title:European journal of immunology
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doi:10.1002/eji.1830140407
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abstract::The MRC OX-22 monoclonal antibody recognizes a restricted determinant of the rat leukocyte-common antigen (L-CA, CD45), which is expressed on most peripheral T cells and all B cells. In contrast only 2%-3% of thymocytes are OX-22+ and these are now shown to be mostly of the immature CD4-CD8- (double-negative, DN), phe...
journal_title:European journal of immunology
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abstract::The requirement for cell interactions in T cell activation has been studied with two continuously in vitro growing T cell clones. These clones are specific for minor histocompatibility antigens, are H-2K restricted, and one clone is functionally a cytolytic T lymphocyte. Both can proliferate when interleukin 2 is adde...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830141011
更新日期:1984-10-01 00:00:00
abstract::Tumor necrosis factor (TNF) is one of the key primary response genes in the immune system that can be activated by a variety of stimuli. Previous analysis of chromatin accessibility to DNaseI demonstrated open chromatin conformation of the TNF proximal promoter in T cells. Here, using chromatin probing with restrictio...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.201243297
更新日期:2014-01-01 00:00:00
abstract::In man, B cell maturation factors obtained from T cells or T cell lines have been shown to induce antibody formation in mitogen or anti-immunoglobulin activated B cells, and in some continuous B cell lines, but the relationships between these factors and B cell differentiation factors in antigen-specific antibody resp...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830150111
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abstract::Physical exercise, mental stress, or infusion of beta-adrenergic agonists result in an increase in the number of natural killer (NK) cells in the peripheral circulation. In view of the specific migration pattern of NK cells in vivo, it has been suggested that these cells may be released from the marginating pool in bl...
journal_title:European journal of immunology
pub_type: 杂志文章
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journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200737664
更新日期:2008-01-01 00:00:00
abstract::To study the biological consequences of cytokine production and apoptosis by intraepithelial lymphocytes (IEL), we have studied these characteristics in both the high and low density CD3+ IEL populations. Stimulation of low- or high-density CD3+ IEL via the T cell receptor (TCR)-CD3 complex using monoclonal anti-CD3, ...
journal_title:European journal of immunology
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doi:10.1002/eji.1830240609
更新日期:1994-06-01 00:00:00
abstract::Lymphocyte infiltration to pancreatic islets is associated to chemoattraction, as are other inflammatory autoimmune processes. We examined whether development of insulitis and diabetes depends on chemoattraction of lymphocytes via the CCR5 chemokine receptor. In non-obese diabetic (NOD) mice, a substantial fraction of...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200324285
更新日期:2004-02-01 00:00:00
abstract::Previous studies from our laboratory have shown that some in vitro maintained Leishmania major-specific L3T4+ T cells were capable of exacerbating cutaneous leishmaniasis after adoptive transfer to normal syngeneic mice. Results presented in this report show that these cells released substantial amounts of interleukin...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830180815
更新日期:1988-08-01 00:00:00
abstract::X-linked agammaglobulinemia (XLA) is a primary immunodeficiency of the B-cell compartment caused by a defective gene encoding for the tyrosine kinase (btk) essential for B cell differentiation. Affected males undergo recurrent pyogenic infections and deficient immunoglobulin production. Peripheral blood T cells from 6...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/1521-4141(200106)31:6<1927::aid-immu1927>3
更新日期:2001-06-01 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
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abstract::Normal human peripheral blood lymphocytes were shown to activate complement in normal human serum (NHS). This activation led to C3 fixation on the cell membrane, which in turn was visualized by fluorescence. The reaction occurred in the absence of detectable amounts of antibodies, since an agammaglobulinemic patient's...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830090115
更新日期:1979-01-01 00:00:00
abstract::Ligand binding to beta1-integrins exerts multiple effects on cells of the immune system including adhesion, spreading, haptotaxis and costimulation of T cells activated by anti-CD3. Here we show that a high-affinity ligand for beta1-integrins, the invasin (Inv) protein of Yersinia pseudotuberculosis, can induce cell d...
journal_title:European journal of immunology
pub_type: 杂志文章
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abstract::Plasmid cassette-transfer vectors pBHuC chi and pBHuC gamma l have been designed which enable the construction of recombinant baculoviruses directing the co-expression of complete immunoglobulin in insect cells. We describe the application of these vectors for the expression of a human/mouse chimeric monoclonal antibo...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830250731
更新日期:1995-07-01 00:00:00
abstract::We investigated the efficacy of a combination of anti-CD80 and CD86 (CD80 + 86) monoclonal antibodies (mAb), anti-interleukin (IL)-12 mAb, or both, for prophylaxis in a mouse acute graft-versus-host-disease (GVHD) model. The treatment with a combination of anti-CD80 + 86 mAb efficiently reduced the lethality of GVHD, ...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830261241
更新日期:1996-12-01 00:00:00
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journal_title:European journal of immunology
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journal_title:European journal of immunology
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journal_title:European journal of immunology
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journal_title:European journal of immunology
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journal_title:European journal of immunology
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更新日期:2013-12-01 00:00:00
abstract::Mice carrying the nude mutation (nu/nu) lack a functioning thymus and do not contain detectable levels of immunocompetent T cells. We now report that nu/nu mice to have lymphocytes which can be activated in vivo by heterologous erythrocytes and a Lyt-1 T cell-derived factor (interleukin 2) to generate T helper cells. ...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830100912
更新日期:1980-09-01 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::Tumor-associated macrophages play an important role in tumorigenesis and metastasis. Trafficking of macrophages to the proximity of tumors is mediated by CSF-1, a growth factor. In this study, we investigated the role of PKB/Akt in CSF-1-induced macrophage migration. Disruption of Akt2 expression by small interference...
journal_title:European journal of immunology
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journal_title:European journal of immunology
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abstract::CD40 ligand (CD40L) is a 33-kDa type II membrane glycoprotein induced on T cells upon activation. CD40L has previously been shown to induce proliferation of resting B cells, immunoglobulin (Ig) secretion from B cells cultured with cytokines and cytokine secretion and tumoricidal activity from monocytes. In this report...
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journal_title:European journal of immunology
pub_type: 杂志文章
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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 eosinoph...
journal_title:European journal of immunology
pub_type: 杂志文章
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journal_title:European journal of immunology
pub_type: 杂志文章
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更新日期:2015-04-01 00:00:00