Abstract:
:Small soluble IgG aggregates of defined size were prepared from pooled human IgG by gel filtration chromatography, and examined by analytical ultracentrifugation. Three such fractions, dimer-rich, trimer-rich and 25S aggregate were used to inhibit IgG monomer binding in a study of the influence of aggregation in the binding of human IgG1 to mouse macrophage Fc receptors. Of the polymers tested, IgG in the trimeric form was found to bind with the greatest avidity, being 158 times more active than monomeric IgG, whereas IgG as a larger 25S aggregate had an increased binding activity of 80 times; the avidity of IgG as dimer was increased by a factor of 2 over monomeric IgG. The possible mechanisms involved in achieving enhanced binding are discussed.
journal_name
Immunol Lettjournal_title
Immunology lettersauthors
Ratcliffe A,Stanworth DRdoi
10.1016/0165-2478(83)90036-6subject
Has Abstractpub_date
1983-01-01 00:00:00pages
73-6issue
2eissn
0165-2478issn
1879-0542pii
0165-2478(83)90036-6journal_volume
7pub_type
杂志文章abstract::The influence of human recombinant granulocyte-macrophage colony-stimulating factor (rH GM-CSF) on respiratory burst response of isolated human neutrophils was examined. Preincubation of cells with rH GM-CSF significantly increased the respiratory burst in response to formyl-methionyl-leucyl-phenylalanine (FMLP), meas...
journal_title:Immunology letters
pub_type: 杂志文章
doi:10.1016/0165-2478(93)90114-h
更新日期:1993-09-01 00:00:00
abstract::We have examined whether the interaction of peptide-loaded MHC molecules on the surface of B-cells with antigen-specific T-cell receptors (TCRs) enhances Ig secretion in the presence of other antigen-independent interactions in vitro. B-cells specific for region 25-40 of beta-lactoglobulin (beta-LG) were stimulated in...
journal_title:Immunology letters
pub_type: 杂志文章
doi:10.1016/s0165-2478(98)00002-9
更新日期:1998-04-01 00:00:00
abstract::We have studied the autocrine regulation of essential expression of the intercellular adhesion molecule-1 (ICAM-1) on 8 transitional cell carcinoma (TCC) cell lines (histopathological grades 1-3). The constitutive expression of ICAM-1 was regulated by soluble factors in an autocrine fashion. These factors were produce...
journal_title:Immunology letters
pub_type: 杂志文章
doi:10.1016/0165-2478(94)90182-1
更新日期:1994-05-01 00:00:00
abstract::The surface phenotypes of lymphoid cells in the developing embryonic thymus were characterized by using monoclonal antibodies. FT-2 antigen thus defined was predominantly expressed on thymocytes in the earlier embryonic stages in all the inbred mouse strains tested. The immunofluorescence and immunoperoxidase tests in...
journal_title:Immunology letters
pub_type: 杂志文章
doi:10.1016/0165-2478(85)90004-5
更新日期:1985-01-01 00:00:00
abstract::The administration of protein antigens into earthworms Lumbricus terrestris and Eisenia foetida induces the formation of antigen-binding protein (ABP) with the maximum response occurring between days 4 and 8. High proteolytic activities observed both in coelomocytes and in coelomic fluids cause rapid antigen degradati...
journal_title:Immunology letters
pub_type: 杂志文章
doi:10.1016/0165-2478(94)90145-7
更新日期:1994-07-01 00:00:00
abstract::Accumulating evidence has demonstrated the importance of cytotoxic T lymphocytes (CTLs) and helper T lymphocytes in controlling HIV-1 replication. We have elicited immune responses in rhesus monkeys utilizing DNA vaccines augmented by the administration of IL-2/Ig, a fusion protein consisting of interleukin-2 and the ...
journal_title:Immunology letters
pub_type: 杂志文章
doi:10.1016/s0165-2478(01)00266-8
更新日期:2001-11-01 00:00:00
abstract::It has been shown that engraftment of human peripheral blood lymphocytes (PBL) from Epstein-Barr virus (EBV) seropositive donors in C.B-17/SCID mice is associated with a high incidence of human B cell tumors. More recently, we described a new approach enabling engraftment of human PBL in normal strains of mice or rats...
journal_title:Immunology letters
pub_type: 杂志文章
doi:10.1016/0165-2478(96)02497-2
更新日期:1996-03-01 00:00:00
abstract::The mechanism of cytolysis by natural killer cells has been shown to involve a soluble lytic factor - the natural killer cytotoxic factor (NKCF). We have investigated the generation of NKCF on exposure of subpopulations of human blood lymphocytes to autologous B lymphocytes and EBV infected B lymphocytes (BEBV), and t...
journal_title:Immunology letters
pub_type: 杂志文章
doi:10.1016/0165-2478(86)90096-9
更新日期:1986-03-01 00:00:00
abstract::Antigen receptor (AgR) crosslinking by antigens or AgR-specific antibodies induces a cascade of enzymatic events in lymphocytes which involves activation of several non-receptor tyrosine- and serine/threonine kinases, phosphatases, phospholipases, etc. Here we show data demonstrating that a thiol group-reactive protei...
journal_title:Immunology letters
pub_type: 杂志文章
doi:10.1016/0165-2478(93)90031-v
更新日期:1993-08-01 00:00:00
abstract::Circulating T follicular helper (cTFH) cells have been demonstrated to be involved in B-cell-mediated alloreactive responses in kidney and liver transplantation; however, whether these cells are involved in acute liver allograft rejection after liver transplantation, and which subsets are involved, remains to be clari...
journal_title:Immunology letters
pub_type: 临床试验,杂志文章
doi:10.1016/j.imlet.2019.03.003
更新日期:2019-09-01 00:00:00
abstract::For more than two decades, chloroquine (CQ) was largely and deliberately used as first choice drug for malaria treatment. However, worldwide increasing cases of resistant strains of Plasmodium have hampered its use. Nevertheless, CQ has recently been tested as adjunct therapy in several inflammatory situations, such a...
journal_title:Immunology letters
pub_type: 杂志文章,评审
doi:10.1016/j.imlet.2013.07.004
更新日期:2013-06-01 00:00:00
abstract::Studies on natural cytotoxicity of peripheral blood monocytes were conducted in patients with acute viral hepatitis B, patients with chronic aggressive hepatitis etiopathogenically linked to viral hepatitis B, and in asymptomatic carriers of HBs antigen. In the majority of cases of viral hepatitis in the acute stage o...
journal_title:Immunology letters
pub_type: 杂志文章
doi:10.1016/0165-2478(85)90016-1
更新日期:1985-01-01 00:00:00
abstract::Lipopolysaccharide (LPS) is a major component of the outer membrane of Gram-negative bacteria. As such, it signals monocytes, macrophages and neutrophils to up-regulate phagocytic functions and to release pro-inflammatory cytokines. Despite the established role of CD14 as the main LPS receptor, the precise nature of t...
journal_title:Immunology letters
pub_type: 杂志文章
doi:10.1016/j.imlet.2004.07.019
更新日期:2005-01-15 00:00:00
abstract::The T cell receptor of gamma delta is normally expressed on a small percentage of peripheral lymphocytes. Although the role of gamma delta T cells in the physiologic immune response is still unknown, there is accumulating evidence that gamma delta T cells may participate in the immune response to mycobacterial and oth...
journal_title:Immunology letters
pub_type: 杂志文章
doi:10.1016/0165-2478(90)90105-y
更新日期:1990-08-01 00:00:00
abstract::Zipper-interacting protein kinase (ZIPK) is a widely expressed serine/threonine kinase that has been implicated in cell death and transcriptional regulation, but its mechanism of regulation remains unknown. Here, we identified threonine-265 (Thr265) in ZIPK as a major autophosphorylation site. Mutational analyses reve...
journal_title:Immunology letters
pub_type: 杂志文章
doi:10.1016/j.imlet.2005.10.015
更新日期:2006-03-15 00:00:00
abstract::A direct correlation between the constitutive expression of IL-1 alpha and reduced tumorigenicity of fibrosarcomas was observed. This was established in fibrosarcoma cell lines which produce IL-1 alpha 'spontaneously', possibly as an aberration of oncogene-mediated transformation or upon IL-1 alpha gene transfer. In f...
journal_title:Immunology letters
pub_type: 杂志文章,评审
doi:10.1016/0165-2478(93)90163-v
更新日期:1993-12-01 00:00:00
abstract::Two types of inhibition of basic peptide-induced rat mast cell secretion are reported. Pretreatment of rat peritoneal mast cells with Vibrio comma neuraminidase, an enzyme which cleaves sialic acid from oligosaccharides, led to inhibition of 5-hydroxytryptamine release induced by the basic peptides polylysine, cortico...
journal_title:Immunology letters
pub_type: 杂志文章
doi:10.1016/0165-2478(82)90134-1
更新日期:1982-10-01 00:00:00
abstract::The majority of peripheral blood mononuclear cells (PBMC) from acute-phase infectious mononucleosis (IM) patients express high levels of T10 (CD38) and HLA-DR surface antigens, which are markers characteristic of activated T cells. However, Tac antigen (p55) expression on these cells was not detectable by flow cytomet...
journal_title:Immunology letters
pub_type: 杂志文章
doi:10.1016/0165-2478(89)90126-0
更新日期:1989-12-01 00:00:00
abstract::A CD8+ cytotoxic T-cell clone that recognized HIV p24gag was isolated from an infected individual. The minimal epitope was localized to amino acids 308-316 (QASQEVKNW). Using allogeneic target cells, we found that lysis was restricted by the HLA-Cw0401 molecule. We observed that C1R cells, that express the HLA-Cw0401 ...
journal_title:Immunology letters
pub_type: 杂志文章
doi:10.1016/s0165-2478(97)02696-5
更新日期:1997-03-01 00:00:00
abstract::The regulatory effect of Z-100 on the balance of Th1/Th2 cell responses in BALB/c mice bearing Meth-A fibrosarcoma was investigated. In tumor bearing mice, Th1 cytokine production (IL-2, IFN-gamma) are suppressed and Th2 cytokine production (IL-4, IL-10) are increased, as compared with those of normal mice. The admini...
journal_title:Immunology letters
pub_type: 杂志文章
doi:10.1016/s0165-2478(99)00130-3
更新日期:1999-11-01 00:00:00
abstract::Isolation of recombinant antibodies from antibody libraries is commonly performed by different molecular display formats including phage display and ribosome display or different cell-surface display formats. We describe a new method which allows the selection of Escherichia coli cells producing the required single ch...
journal_title:Immunology letters
pub_type: 杂志文章
doi:10.1016/j.imlet.2013.02.005
更新日期:2013-03-01 00:00:00
abstract::Sepsis is an abnormal immune response to infection characterized by an overwhelming systemic inflammation and cell death. Non-apoptotic cell death pertaining to pyroptosis, necroptosis and autophagy contribute to sepsis pathogenesis apart from classical apoptotic cell death. The objective of the current study is to in...
journal_title:Immunology letters
pub_type: 杂志文章
doi:10.1016/j.imlet.2020.12.009
更新日期:2021-01-03 00:00:00
abstract::The link between innate and adaptive host immune response to Mycobacterium tuberculosis (M.tb) is driven by dendritic cells (DC). In this study, we examined the ability of prevalent clinical strains from south India (S7, S10) and laboratory strain H37Rv (Rv) to induce maturation of monocyte derived dendritic cells (Mo...
journal_title:Immunology letters
pub_type: 杂志文章
doi:10.1016/j.imlet.2008.01.009
更新日期:2008-05-15 00:00:00
abstract::An essential key to pathogenicity in Yersinia is the presence of a 70 kb plasmid (pYV) which encodes a type-III secretion system and several virulence outer proteins whose main function is to enable the bacteria to survive in the host. Thus, a specific immune response is needed in which cytokines are engaged. The aim ...
journal_title:Immunology letters
pub_type: 杂志文章
doi:10.1016/j.imlet.2004.04.007
更新日期:2004-06-15 00:00:00
abstract::The contribution of T cell precursors from the thymus and the bone marrow to the pool of intestinal intraepithelial lymphocvtes (IELs) has been studied in a system using donor cells from enhanced-green fluorescent protein (EGFP+ ) transgenic mice a doptively transferred into EGFP- recipient mice. Consistent with previ...
journal_title:Immunology letters
pub_type: 杂志文章
doi:10.1016/s0165-2478(00)00275-3
更新日期:2000-12-01 00:00:00
abstract::Murine peritoneal macrophages were isolated by adherence and their listericidal activity assessed in the presence or absence of selected cytokines. Untreated macrophages were not highly listericidal, showing moderate killing in the first 2 h after infection, and allowed progressive microbial growth thereafter (up to 9...
journal_title:Immunology letters
pub_type: 杂志文章
doi:10.1016/0165-2478(91)90158-7
更新日期:1991-03-01 00:00:00
abstract::Replication-competent retroviruses are not known to encode or induce nuclear antigens that are immunogenic in their natural hosts. We describe here the detection of a human T-lymphotropic virus (type I and type II) associated nuclear antigen (HTLV-NA) by an anticomplement immunofluorescence assay. Antibody to HTLV-NA ...
journal_title:Immunology letters
pub_type: 杂志文章
doi:10.1016/0165-2478(86)90120-3
更新日期:1986-08-01 00:00:00
abstract::CBA spleen cells have been stimulated in vitro with A/Jap influenza virus-infected CBA spleen cells to generate a 'primary' cytotoxic lymphocyte (CL) response. The culture conditions were devised to allow the segregation of individual clones of CL and cytotoxicity measured by the lysis of infected or non-infected L-92...
journal_title:Immunology letters
pub_type: 杂志文章
doi:10.1016/0165-2478(82)90127-4
更新日期:1982-01-01 00:00:00
abstract:BACKGROUND:Vitamin D (vitD) is involved in important regulatory functions of the innate and adaptive immune system. So, it has been hypothesized that vitD might influence the course of atopic dermatitis (AD). Also obesity may have impact on immune system. The aim of our study was to investigate vitamin D status and bod...
journal_title:Immunology letters
pub_type: 杂志文章
doi:10.1016/j.imlet.2016.11.004
更新日期:2017-01-01 00:00:00
abstract::The three-dimensional structures of cyclosporin A complexed with cyclophilin A or Fab fragment of a monoclonal antibody were compared. In these two complexes conformations of the fragment D-alanine8-N-methylvaline11 in cyclosporin A were in a good agreement. In addition, cyclophilin A and the Fab fragment had related ...
journal_title:Immunology letters
pub_type: 杂志文章
doi:10.1016/0165-2478(94)90135-x
更新日期:1994-07-01 00:00:00