Expression of the IL-6 gene induces differentiation of a human monoclonal EBV-transformed B cell line

Autor:	Richard J. Bende, G. J. Jochems, R. A. W. Van Lier, W. P. Zeijlemaker, Michèl R. Klein
Rok vydání:	1993
Předmět:	CD40 biology Chemistry Immunology General Medicine Transfection CD38 Immunoglobulin secretion Molecular biology medicine.anatomical_structure Antigen Cell culture medicine biology.protein Immunology and Allergy IL-2 receptor B cell
Zdroj:	Human Antibodies. 4:124-133
ISSN:	1875-869X 1093-2607
DOI:	10.3233/hab-1993-4305
Popis:	To study the role of interleukin (IL)-6 as a growth and differentiation factor for Epstein-Barr virus (EBV)-transformed B lymphocytes, we transfected the cDNA coding for human IL-6 in a monoclonal IgG1-secreting EBV B cell line. Two independent clones were selected that constitutively secreted high amounts of IL-6. These clones showed enhanced levels of IL-6 and tumor necrosis factor alpha secretion when compared to non-IL-6 transfected controls. Moreover, they could efficiently be recovered from low cell density cultures in limiting dilutions when plated on a feeder layer of heterologous EBV B cells. IL-6-induced phenotypical changes comprised a significant rise in immunoglobulin secretion levels and enhanced membrane expression of CD25 (the beta chain of the IL-2 receptor) and of the B cell differentiation antigen CD40. IL-6-dependent down modulation of CD38 and of the adhesion structure VLA4 were also observed. Our data support the notion that IL-6 can serve as an growth and differentiation factor for EBV B cells.
Databáze:	OpenAIRE
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