PMID: 8581844Nov 1, 1995Paper

Selective restimulation of antigen or allergen preactivated T cells using OKT3 F(ab)2 results in the secretion of TH-1 or TH-2-like cytokine patterns

Clinical and Experimental Allergy : Journal of the British Society for Allergy and Clinical Immunology
M JutelW J Pichler

Abstract

The synthesis of IgE is regulated by cytokines secreted from T-helper cells. The studies on cytokine secretion by peripheral blood mononuclear cells (PBMC) upon stimulation with antigen or allergen are difficult due to low levels of cytokines, especially of interleukin-4 (IL-4). In this study we tried to establish a culture system, which could enable the measurement of the cytokine profiles in specifically activated cultures. Three methods to potentiate cytokine secretion were evaluated: PBMC from bee venom or house dust mite (Dermatophagoides pteronyssinus) allergic patients as well as normal subjects were stimulated either with the major bee venom allergen phospholipase A2 (PLA) or with the major D. pteronyssinus allergen (Der p 1) or with the control antigens tetanus toxoid (TT) and purified protein derivate (PPD). After 7 days of culture the cells were restimulated either with plastic bound OKT3 F(ab)2 monoclonal antibodies (MoAbs), with the appropriate antigen + antigen presenting cells or with IL-2. The secretion of cytokines (IL-4, IFN gamma) was measured after restimulation of the cultures (day 8). While OKT3 F(ab)2 was unable to activate resting T cells, it could restimulate preactivated cells. Restimulation with OKT3 ...Continue Reading

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Citations

Aug 28, 1998·Research in Immunology·J A Woodfolk, T A Platts-Mills
Aug 10, 2000·Scandinavian Journal of Immunology·R MovérareG Stâlenheim
Apr 15, 2004·Clinical and Experimental Allergy : Journal of the British Society for Allergy and Clinical Immunology·H D de SilvaR E O'Hehir

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