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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
12
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pubmed:dateCreated |
1987-7-15
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pubmed:abstractText |
Interleukin 4 (IL 4), formerly known as B cell stimulatory factor 1 (BSF-1), has recently been described as a growth factor for T cells. The role of IL 4 in the putatively IL 2-independent growth of certain cloned T helper cells is unclear. D10.G4.1 (D10) is a conalbumin-specific helper T cell that has been employed extensively in the analysis of T cell activation and as an assay for the detection of IL 1. Previously, it was thought that IL 1 induced the expression of IL 2 receptors on D10 cells, thereby permitting D10 to proliferate in response to endogenously produced IL 2. However, we cannot detect IL 2 mRNA or protein in D10 cells or their supernatants as determined by the following criteria: monoclonal antibodies that neutralize the in vitro activity of murine IL 2 do not block the IL 1-dependent proliferation of D10 cells; no competitive binding for high-affinity IL 2 receptors with 125I-labeled IL 2 can be detected with medium conditioned by activated D10 cells; and Northern blot analysis and S1 nuclease protection assays, performed with cDNA probes for IL 2, do not detect mRNA for IL 2 under a variety of different activation conditions that foster autocrine growth of D10 cells. In contrast, activated D10 cells produce both IL 4 mRNA and protein as judged by similar criteria. Purified IL 4 has significant TCGF activity as measured by proliferation of HT-2 cells. This activity can be blocked completely by a monoclonal antibody to IL 4 (11B11). The proliferation of D10 cells in the presence of 3D3 (a clonotype-specific monoclonal anti-T cell receptor antibody) and IL 1 can be blocked completely by 11B11 antibody. Highly purified IL 4 alone cannot induce the proliferation of resting D10 cells; however, equivalent amounts of IL 4 in the presence of recombinant IL 1 induce significant D10 proliferation. Therefore, IL 1 appears to render D10 cells responsive to their autocrine growth signal. These data indicate that IL 4 serves as the autocrine T cell growth factor for D10 cells, and that exogenous IL 1 is required for the transduction of this growth signal. This may represent a more broadly applicable mechanism for the growth of certain subsets of T helper cells.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
AIM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/Growth Substances,
http://linkedlifedata.com/resource/pubmed/chemical/Interleukin-2,
http://linkedlifedata.com/resource/pubmed/chemical/Interleukin-4,
http://linkedlifedata.com/resource/pubmed/chemical/Lymphokines,
http://linkedlifedata.com/resource/pubmed/chemical/RNA, Messenger,
http://linkedlifedata.com/resource/pubmed/chemical/Recombinant Proteins
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pubmed:status |
MEDLINE
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pubmed:month |
Jun
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pubmed:issn |
0022-1767
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
15
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pubmed:volume |
138
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
4280-7
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:2953803-Animals,
pubmed-meshheading:2953803-Cell Division,
pubmed-meshheading:2953803-Cell Line,
pubmed-meshheading:2953803-Clone Cells,
pubmed-meshheading:2953803-Growth Substances,
pubmed-meshheading:2953803-Interleukin-2,
pubmed-meshheading:2953803-Interleukin-4,
pubmed-meshheading:2953803-Lymphocyte Activation,
pubmed-meshheading:2953803-Lymphokines,
pubmed-meshheading:2953803-Mice,
pubmed-meshheading:2953803-RNA, Messenger,
pubmed-meshheading:2953803-Recombinant Proteins,
pubmed-meshheading:2953803-T-Lymphocytes, Helper-Inducer
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pubmed:year |
1987
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pubmed:articleTitle |
Autocrine growth of T cells independent of interleukin 2: identification of interleukin 4 (IL 4, BSF-1) as an autocrine growth factor for a cloned antigen-specific helper T cell.
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pubmed:publicationType |
Journal Article,
Comparative Study
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