Abstract:
:Interleukin (IL)-4-transgenic mice were used as a model system to study the consequences of low levels of IL-4 expression for the expression of other cytokines examined by quantitative polymerase chain reaction (PCR). For this purpose, a plasmid was constructed which contains, in tandem array, 5' and 3' primer sequences specific for the cytokine genes IL-1 to IL-6, tumor necrosis factor (TNF), lymphotoxin (LT), interferon (IFN)-gamma and beta-actin. During co-amplification, target and control DNA compete for the primers and the amount of PCR product is proportional to the amount of input DNA. Competitive PCR was performed first to adjust the cDNA to be compared to identical concentrations of beta-actin cDNA and subsequently to determine cytokine mRNA levels from spleen cells of normal and IL-4-transgenic animals. The sensitivity of this approach was demonstrated by the capability to detect a twofold difference in IL-4 mRNA levels between IL-4-transgenic heterozygous and homozygous animals. Upon lipopolysaccharide activation, the IL-4 transgene which is expressed essentially in B lymphocytes was induced approximately 50-fold. Several cytokine mRNA such as those coding for IL-5, IL-6, IFN-gamma and also the IL-4 receptor were found to be up-regulated in IL-4-transgenic mice, whereas IL-1, IL-2, IL-3, TNF and LT mRNA levels did not seemed to be influenced by IL-4. A possible functional significance of the elevated IFN-gamma mRNA was demonstrated by showing that (a) CD23 expression was not increased, and (b) Mac-1+ cells were markedly increased in the spleen of transgenic mice.
journal_name
Eur J Immunoljournal_title
European journal of immunologyauthors
Platzer C,Richter G,Uberla K,Müller W,Blöcker H,Diamantstein T,Blankenstein Tdoi
10.1002/eji.1830220511keywords:
subject
Has Abstractpub_date
1992-05-01 00:00:00pages
1179-84issue
5eissn
0014-2980issn
1521-4141journal_volume
22pub_type
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journal_title:European journal of immunology
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abstract::During mammalian pregnancy, one or more semiallogeneic fetuses gestate in direct contact with the maternal circulation and uterine tissue. However, a damaging maternal immune response is not normally provoked. We studied two possible mechanisms for this maternal-fetal tolerance, alone and in combination. First, we dir...
journal_title:European journal of immunology
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abstract::IL-22 is an IFN-IL-10 cytokine family member, which is produced by activated Th1 and NK cells and acts primarily on epithelial cells. Here we demonstrate that IL-22, in contrast to its relative IFN-gamma, regulates the expression of only a few genes in keratinocytes. This is due to varied signal transduction. Gene exp...
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journal_title:European journal of immunology
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abstract::Peptide ligands presented by MHC class I molecules are generated in a cascade of proteolytic events starting with the proteasome in the cytosol and frequently terminating with trimming aminopeptidases in the endoplasmic reticulum. Several cytosolic proteases can carry out intermediate proteolytic steps between these s...
journal_title:European journal of immunology
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abstract::The repertoire of V regions of alpha/beta+ T cell receptor (TcR) on CD4+ and CD8+ T cells from the peripheral blood of six patients with a novel X-linked combined immunodeficiency was investigated by flow cytometry. The relative frequencies of V region subfamilies V alpha 2a on CD4+ T lymphocytes and V beta 5b and V b...
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:1984-04-01 00:00:00
abstract::It is well accepted that Th17 cells are a highly plastic cell subset that can be easily directed toward the Th1 phenotype in vitro and also in vivo during inflammation. However, there is an ongoing debate regarding the reverse plasticity (conversion from Th1 to Th17). We show here that ectopic ROR-γt expression can re...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.201847677
更新日期:2019-01-01 00:00:00
abstract::Rapid IgE desensitization provides temporary tolerization for patients who have presented severe hypersensitivity reactions to food and drugs, protecting them from anaphylaxis, but the underlying mechanisms are still incompletely understood. Thus, here we develop an effective and reproducible in vitro model of rapid I...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.201040810
更新日期:2011-04-01 00:00:00
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journal_title:European journal of immunology
pub_type: 杂志文章
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更新日期:1998-08-01 00:00:00
abstract::Innate immunity directs the adaptive immune response by identifying antigens that are associated with infectious agents. Although some microbial antigens can be recognized by innate immune receptors, most cannot, and these require identification by some other means. The introduction of aldehydes into antigens by glyco...
journal_title:European journal of immunology
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journal_title:European journal of immunology
pub_type: 杂志文章
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更新日期:1995-09-01 00:00:00
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journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830230129
更新日期:1993-01-01 00:00:00
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journal_title:European journal of immunology
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更新日期:1985-10-01 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
pub_type: 杂志文章
doi:10.1002/eji.1830181109
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abstract::Rabbit antibodies to Atlantic cod (Gadus morhua L.) immunoglobulin were affinity purified and used to screen cDNA libraries from spleen and head kidney mRNA. cDNA clones for both the secretory and membrane-bound heavy (H) chain were isolated, the nucleotide and deduced amino acid sequences of which are reported here. ...
journal_title:European journal of immunology
pub_type: 杂志文章
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更新日期:1991-12-01 00:00:00
abstract::Previously, we found that co-expression of CD25 and TNFR2 identified the most suppressive subset of mouse Treg. In this study, we report that human peripheral blood (PB) FOXP3(+) cells present in CD25(high), CD25(low) and even CD25(-) subsets of CD4(+) cells expressed high levels of TNFR2. Consequently, TNFR2-expressi...
journal_title:European journal of immunology
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更新日期:2010-04-01 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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abstract::An approach to the preparation of antigen-specific human monoclonal antibodies focuses on mice transgenic for human immunoglobulin gene miniloci; the V gene segments in these miniloci undergo productive rearrangement to yield mouse B cells expressing human immunoglobulin (Ig) chains. The general usefulness of this str...
journal_title:European journal of immunology
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abstract::Interactions between CD8+ T cells and endothelial cells are important in both protective and pathologic immune responses. Endothelial cells regulate the recruitment of CD8+ T cells into tissues, and the activation of CD8+ T cells by antigen presentation and costimulatory signals. PD-L1 and PD-L2 are recently described...
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