Interleukin 1-dependent induction of both interleukin 2 secretion and interleukin 2 receptor expression by thymoma cells
Details
Serval ID
serval:BIB_DBF3E8000D44
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Interleukin 1-dependent induction of both interleukin 2 secretion and interleukin 2 receptor expression by thymoma cells
Journal
Journal of Immunology
ISSN
0022-1767 (Print)
Publication state
Published
Issued date
08/1986
Volume
137
Number
4
Pages
1226-31
Notes
Journal Article --- Old month value: Aug 15
Abstract
The macrophage-derived product, interleukin 1 (IL 1) is thought to play an important regulatory role in the proliferation of T lymphocytes; however, its mechanism of action is unknown. We describe in this report a variant subline of EL4 thymoma cells (EL4-6.1) that displays a high degree of responsiveness to IL 1. We show that recombinant IL 1 can induce both the secretion of interleukin 2 (IL 2) and the expression of IL 2 receptors (IL 2-R) by these cells. EL4-6.1 cells do not constitutively secrete IL 2, nor do they express IL 2-R; but when cultured in the presence of recombinant IL 1, they secrete detectable amounts of IL 2 (5 to 15 U/ml). In the presence of either suboptimal levels of phorbol ester (PMA) or Ionomycin, the addition of IL 1 resulted in up to an 80-fold enhancement in the amount of IL 2 secreted. Stimulation with IL 1 alone or in combination with Ionomycin was unable to induce detectable IL 2-R expression by EL4-6.1 cells. However, in the presence of suboptimal concentrations of PMA, IL 1 induced expression of about 3000 high affinity (dissociation constant, Kd of 31 pM) and 50,000 low affinity (Kd of 2800 pM) IL 2-R. These IL 2-R were functional, based on their ability to rapidly internalize IL 2. This model system will allow a detailed analysis of the mechanisms involved in the regulation of the immune response by IL 1 and IL 2.
Keywords
Animals
Cell Line
Dose-Response Relationship, Immunologic
Interleukin-1/*physiology
Interleukin-2/*biosynthesis/metabolism
Kinetics
Lymphocyte Activation
Mice
Receptors, Immunologic/*biosynthesis
Receptors, Interleukin-2
T-Lymphocytes/metabolism
Thymoma/metabolism/*secretion
Pubmed
Web of science
Create date
28/01/2008 11:14
Last modification date
20/08/2019 16:00