Promotion of arthritis and allergy in mice by aminoglycoglycerophospholipid, a membrane antigen specific to Mycoplasma fermentans.

Abstract

Mycoplasmas, which lack a cell wall and are the smallest self-replicating bacteria, have been linked to some chronic diseases, such as AIDS, rheumatoid arthritis (RA), and oncogenic transformation of cells. Their membrane components (lipoproteins and glycolipids) have been identified as possible causative factors in such diseases. Glycoglycerophospholipid (GGPL)-III, a unique phosphocholine-containing aminoglycoglycerophospholipid, is a major specific antigen of Mycoplasma fermentans, and has been detected in 38% of RA patients. Unlike those of lipoproteins, which induce inflammation via Toll-like receptor 2 (TLR2), the pathologic effects of GGPL-III are poorly understood. RA and metal allergies are chronic inflammatory diseases in which autoantigens have been implicated. Here, we examined the effects of chemically synthesized GGPL-III in murine arthritis and allergy models. GGPL-III alone exhibited little inflammatory effect, but promoted both collagen-induced arthritis and nickel (Ni) allergy, although less powerfully than Escherichia coli lipopolysaccharide. The augmenting effect of GGPL-III on Ni allergy was present in mice deficient in either T cells or active TLR4, but it was markedly weaker in mice deficient in macrophages, interleukin-1, or the histamine-forming enzyme histidine decarboxylase than in their control strains. These results suggest that GGPL-III may play roles in some types of chronic diseases via the innate immune system.

• Authors: Naoki Sato, Takefumi Oizumi, Masayuki Kinbara, Tadasu Sato, Hiromi Funayama, Seiji Sato, Kazuhiro Matsuda, Haruhiko Takada, Shunji Sugawara, Yasuo Endo
• Journal: FEMS immunology and medical microbiology (FEMS Immunol Med Microbiol) Vol. 59 Issue 1 Pg. 33-41 (Jun 01 2010) ISSN: 1574-695X [Electronic] England
• PMID: 20236320 (Publication Type: Journal Article)

Chemical References

• 1''-phosphocholine-2''-aminodihydroxypropane-3''-phospho-6'-glucopyranosyl-(1'-3)-1,2-dipalmitoylglycerol
• Allergens
• Antigens, Bacterial
• Glycolipids
• Interleukin-1
• Lipopolysaccharides
• Tlr4 protein, mouse
• Toll-Like Receptor 4
• Nickel
• Collagen

Topics

• Allergens (immunology)
• Animals
• Antigens, Bacterial (immunology)
• Arthritis (chemically induced, immunology)
• Collagen (immunology)
• Disease Models, Animal
• Escherichia coli (chemistry, immunology)
• Glycolipids (chemical synthesis, immunology)
• Hypersensitivity (immunology)
• Interleukin-1 (deficiency, immunology)
• Lipopolysaccharides (immunology, isolation & purification)
• Macrophages (immunology)
• Mice
• Mice, Inbred BALB C
• Mice, Inbred DBA
• Mice, Knockout
• Mycoplasma fermentans (chemistry, immunology)
• Nickel (immunology)
• T-Lymphocytes (immunology)
• Toll-Like Receptor 4 (deficiency, immunology)