Cytokine induction in human mononuclear cells stimulated by IgG-coated culture surfaces and by IgG for infusion

Kuhnert, Peter; Schalch, L; Jungi, Thomas (1990). Cytokine induction in human mononuclear cells stimulated by IgG-coated culture surfaces and by IgG for infusion. Clinical immunology and immunopathology, 57(2), pp. 218-232. Elsevier

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The effect of IgG on cytokine production by human mononuclear cells (MNC) was studied. Tumor necrosis factor-alpha (TNF) was determined both by bioassay and by immunoassay. Interleukin-1 (IL1) was measured by a thymocyte costimulator assay, which was shown to be completely inhibitable by polyclonal anti-IL1. Precautions were taken to avoid inadvertent exposure of the studied cells to endotoxin. In a first model, TNF and IL1 production by adherent MNC in IgG-coated cluster plates were determined. IgG induced a strong TNF response, usually leveling off after 6 hr, and was comparable in kinetics and magnitude with an LPS-induced response. The thymocyte co-stimulatory activity response was relatively weak and peaked at 6 hr. In contrast, LPS-induced co-stimulatory activity production steadily increased over 24 hr. In a second model, MNC in suspension cultures containing autologous serum were exposed to IgG for intravenous use (IgG-IV). Cells exposed to IgG-IV produced higher amounts of cytokines than control counterparts and were primed for enhanced production of cytokines upon a second, unrelated stimulus. This implies that the effect of IgG-IV on suspended MNC resembles that of surface-adsorbed IgG and raises the possibility that cytokine release is an integral part of the mechanism of action of infused IgG. Evidence is presented suggesting that both surface IgG and IgG-IV act directly on monocytes, in a Fc-dependent manner.

Item Type:	Journal Article (Original Article)
Division/Institute:	05 Veterinary Medicine > Research Foci > Host-Pathogen Interaction 05 Veterinary Medicine > Department of Infectious Diseases and Pathobiology (DIP) > Institute of Virology and Immunology 05 Veterinary Medicine > Department of Infectious Diseases and Pathobiology (DIP) 05 Veterinary Medicine > Department of Infectious Diseases and Pathobiology (DIP) > Institute of Veterinary Bacteriology
UniBE Contributor:	Kuhnert, Peter, Jungi, Thomas
Subjects:	500 Science > 570 Life sciences; biology 600 Technology > 630 Agriculture
ISSN:	0090-1229
Publisher:	Elsevier
Language:	English
Submitter:	Peter Kuhnert-Ryser
Date Deposited:	14 Sep 2015 16:48
Last Modified:	05 Dec 2022 14:39
PubMed ID:	2119923
URI:	https://boris.unibe.ch/id/eprint/62568