Antigen‐Tuftsin Conjugate Signals Interleukin‐1 Synthesis and Secretion
作者:
Shlomo Dagan,
Esther Tzehoval,
Boris Tartakovsky,
Mati Fridkin,
Michael Feldman,
期刊:
Journal of Biological Response Modifiers
(OVID Available online 1988)
卷期:
Volume 7,
issue 6
页码: 546-558
ISSN:0732-6580
年代: 1988
出版商: OVID
关键词: Key Words;Tuftsin;Interleukin-1;Macrophages
数据来源: OVID
摘要:
The immunoglobulin heavy chain derived tetrapeptide, tuftsin (Thr-Lys-Pro-Arg), known for its phagocytosis-stimulating activity, was found to augment the antigen-presenting capacity of macrophages in culture, when applied simultaneously with antigen. Injection of antigens or antigens admixed with tuftsin had no immunogenic effect in vivo. On the other hand, antigen-tuftsin covalent conjugates, injected in aqueous solution intramuscularly or intravenously, significantly augmented antibody production. Studying the mechanism underlying these immunogenic effects, we demonstrate that tuftsin, when applied to macrophages together with, or conjugated to, antigens, signals de novo synthesis of mRNA encoding for interleukin-1 (IL-1), and induces secretion of IL-1 from the cells. We suggest that triggering the immunogenic processes by tuftsin conjugates is a consequence of up-regulation of IL-1 synthesis and secretion.
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