Coexpression of type I and type II IL-1 receptors in the murine T helper 2 cell line D10N
- 1 July 1993
- journal article
- Published by Wiley in FEBS Letters
- Vol. 326 (1-3), 204-208
- https://doi.org/10.1016/0014-5793(93)81791-w
Abstract
IL-1 receptor heterogeneity in murine lymphocytes was investigated by cross-linking to [125I]IL-1 alpha and competition with IL-1 receptor antagonist, and the molecular identity of the IL-1 receptors was identified with PCR using primers specific for type I and type II IL-1 receptors. The thymoma cell line E14 6.1 exhibits exclusively the 80 kDa receptors which proved to be the type I receptor according to PCR analysis. In the pre-B cell line 70Z/3, predominantly a 60 kDa type II receptor but also a trace of type I receptor can be identified by PCR. The Th2 cell line D10N expresses both types of IL-1 receptors in equivalent amounts according to cross-linking experiments and PCR. The proliferative response of D10N cells to IL-1 is inhibited by IL-1 ra which according to cross-linking affects the binding to the type I receptor only. It is concluded that coexpression of both types of IL-1 receptors might be a characteristic of murine Th2 cells and that their growth-dependence on IL-1 is mediated by the type I receptor.Keywords
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