| Literature DB >> 2469641 |
R E O'Hehir1, V Bal, D Quint, R Moqbel, A B Kay, E D Zanders, J R Lamb.
Abstract
An allergen-dependent in vitro model of immunoglobulin E (IgE) synthesis by human B cells is reported. Using this model, it is demonstrated that polyclonal T cells and CD4+ Dermatophagoides spp. (house dust mite)-specific T-cell clones derived from an atopic, house dust mite (HDM)-allergic individual are able to support IgE synthesis by autologous B cells. The helper activity was interleukin-4 (IL-4) dependent as only cloned T cells expressing detectable mRNA for IL-4 were able to induce IgE synthesis without the addition of exogenous IL-4. Peripheral and cloned T cells reactive with HDM could also be identified from a non-atopic individual but neither population was able to support IgE production even in the presence of exogenous IL-4.Entities:
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Year: 1989 PMID: 2469641 PMCID: PMC1385148
Source DB: PubMed Journal: Immunology ISSN: 0019-2805 Impact factor: 7.397