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 B cells to differentiate and mature into immunoglobulin (Ig) synthesis and secretion after activation with tetanus toxoid (TT) in vitro. To ensure the antigen specificity of induction, very low doses of TT (1-100 ng/ml) were used for activation of the lymphocytes, all obtained from previously sensitized donors. The T4+ cells with low avidity for HP (fractions HP-I and HP-II) exerted little help for B cell differentiation. Removal of these cells enhanced the helper function of the remaining T4+ cells, indicating that fractions HP-I and HP-II contained suppressor cells. In contrast, efficient B cell help was provided by T4+ cells with high avidity for HP (fractions HP-III and HP-IV). However, these fractions differed in the quality of help provided. Thus, while HP-III cells induced IgG secretion, HP-IV cells mainly induced IgM secretion. Moreover, while the Ig secreted after help from HP-III cells was TT-specific antibody, the Ig secreted by B cells in the presence of autologous HP-IV cells was polyclonal, probably reflecting induction of B cells differing in their responsiveness to signals provided by different types of T cells. The results indicate that T4+ cells vary in their stage of differentiation as seen by differences in expression of the HP marker and that differences in HP-marker expression appear to be associated with differences in cellular functions.
journal_name
Eur J Immunoljournal_title
European journal of immunologyauthors
Wikén M,Hellström U,Perlmann Pdoi
10.1002/eji.1830141108subject
Has Abstractpub_date
1984-11-01 00:00:00pages
1003-9issue
11eissn
0014-2980issn
1521-4141journal_volume
14pub_type
杂志文章abstract::Large-scale extravasation of lymphocytes takes place in vivo under physiological conditions in lymph nodes at very specialized vascular segments called high endothelial venules (HEV). When circulating lymphocytes leave the blood, they first bind to endothelial cells of HEV (HE cells) and subsequently enter lymph nodes...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830180814
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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:1998-03-01 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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更新日期:1986-12-01 00:00:00
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journal_title:European journal of immunology
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更新日期:2007-12-01 00:00:00
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journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830200803
更新日期:1990-08-01 00:00:00
abstract::Human CD8(+) T cells are functionally heterogeneous and can be divided into phenotypically and functionally distinct subsets according to CCR7 and CD45RA expression levels. Among these, CCR7(low) CD45RA(low) effector memory CD8(+) T cells (Tem) and CCR7(low) CD45RA(high) CD8(+) T cells, which are designated as Temra a...
journal_title:European journal of immunology
pub_type: 临床试验,杂志文章
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更新日期:2015-03-01 00:00:00
abstract::T lymphocytes derived from peripheral blood of a patient with adenosine deaminase (ADA) deficiency were expanded in vitro. The human ADA (hADA) gene was introduced into these replicating ADA- T cells with the use of an amphotropic recombinant retrovirus carrying the hADA gene. Subsequently, infected T cells were selec...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830220111
更新日期:1992-01-01 00:00:00
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journal_title:European journal of immunology
pub_type: 杂志文章,评审
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更新日期:2010-03-01 00:00:00
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journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830271117
更新日期:1997-11-01 00:00:00
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journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830190102
更新日期:1989-01-01 00:00:00
abstract::NK cells are the main cells of the innate immune system that produce IFN-γ, and they express this cytokine at early stages of maturation in response to cytokine stimulation. Conversely, acquisition of IFN-γ-competence in CD4(+) T helper cells requires a differentiation process from naïve toward type 1 (Th1) cells, whi...
journal_title:European journal of immunology
pub_type: 杂志文章
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更新日期:2014-07-01 00:00:00
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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
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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:1980-12-01 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:1989-11-01 00:00:00
abstract::Mitogens such as pokeweed mitogen, Staphylococcus aureus Cowan I, concanavalin A and phytohemagglutinin and monoclonal anti-CD antibodies were examined for their capacity to induce IgE synthesis by peripheral blood leukocytes obtained from both atopic and nonatopic individuals. While lectins failed to induce IgE synth...
journal_title:European journal of immunology
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更新日期:1988-03-01 00:00:00
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journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830110605
更新日期:1981-06-01 00:00:00
abstract::A panel of closely and distantly related lysozymes and lysozyme-peptide fragments were utilized in assessing the specificity repertoire of murine anti-hen egg white lysozyme hybridomas. The 44 monoclonal antibodies could be divided into a minimum of 18 fine specificity groups in tests using the lysozyme panel. Two hyb...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830140116
更新日期:1984-01-01 00:00:00
abstract::Stimulation of T cells via the T cell receptor (TCR) leads to an increase intracellular in free Ca2+ levels ([Ca2+]i) and the activation of the MAP kinase signaling pathway. This study analyzes for the first time Ca2+ fluxes in naive cytotoxic T cells stimulated with full agonists, partial agonists, or antagonists. Fo...
journal_title:European journal of immunology
pub_type: 杂志文章
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更新日期:1997-12-01 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:1994-10-01 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:2012-01-01 00:00:00
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journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830050810
更新日期:1975-08-01 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:2014-03-01 00:00:00