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Induction of a proinflammatory cytokine network by Mycoplasma arthritidis-derived superantigen (MAS).

Abstract
Mycoplasma arthritidis is an arthritogenic organism for rodents, producing a superantigen (MAS). It has been postulated that mycoplasmas or superantigens thereof might play a role in human rheumatoid arthritis. Since M. arthritidis fulfills both, the present study was performed to investigate MAS-specific cytokine induction. Human or murine leukocytes were stimulated with MAS, staphylococcal enterotoxin E (SEE), or lipopolysaccharide (LPS). Cytokines were measured by ELISA, Bioassay, and RT-PCR. The response to MAS in humans was individually restricted, in contrast to the response to SEE or LPS. Furthermore, MAS showed the same capacity for inducing proinflammatory cytokines as interleukin (IL)-1 IL-6, and IL-8 as SEE and LPS. However, MAS showed a significantly decreased capacity to induce the anti-inflammatory cytokine IL-10 and IL-1RA. In mice, the reactivity to MAS was strictly MHC-II restricted, in contrast to that of SEE or LPS. The individual response to MAS in humans might be explained by the difference of the HLA-DR haplotype because H-2-differing mouse strains showed the same discrepancies. MAS induced an overproduction of proinflammatory cytokines, when its ability to induce proinflammatory and anti-inflammatory cytokines was compared with those of SEE and LPS. The individual response may explain an MHC linkage, and the failure to induce anti-inflammatory cytokines may be the reason for a chronic disease in contrast to acute inflammation.
AuthorsL Rink, W Nicklas, J Luhm, R Kruse, H Kirchner
JournalJournal of interferon & cytokine research : the official journal of the International Society for Interferon and Cytokine Research (J Interferon Cytokine Res) Vol. 16 Issue 10 Pg. 861-8 (Oct 1996) ISSN: 1079-9907 [Print] United States
PMID8910772 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
Chemical References
  • Antigens, Bacterial
  • Cytokines
  • Epitopes
  • RNA, Messenger
  • Superantigens
Topics
  • Animals
  • Antigens, Bacterial (immunology)
  • Arthritis (immunology, metabolism)
  • Cells, Cultured
  • Cytokines (biosynthesis)
  • Epitopes
  • Humans
  • Leukocytes, Mononuclear (metabolism)
  • Mice
  • Mice, Inbred C3H
  • Mice, Inbred C57BL
  • Mycoplasma (immunology)
  • Polymerase Chain Reaction
  • RNA, Messenger (biosynthesis)
  • Spleen (cytology, immunology, metabolism)
  • Superantigens (immunology)
  • Synovitis (immunology, metabolism)

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