title: Stimulation of splenocytes in C3H/HeJ mice with Porphyromonas gingivalis lipid A in comparison with enterobacterial lipid A.
abstract: Porphyromonas gingivalis 381 lipid A induced strong mitogenic response in splenic B cells separated from LPS-non-responsive C3H/HeJ mice as well as LPS-responsive C3H/HeN mice, by using a magnetic cell sorting system. The lipid A also exhibited mitogenic activity in splenic T cells. P. gingivalis lipid A induced lower production of interleukin-1 beta (IL-1 beta) in splenic macrophage cultures and exhibited a comparable IL-6 producing activity in splenic B cells of C3H/HeN mice as compared to Escherichia coli-type synthetic lipid A (compound 506) and monophosphoryl lipid A from Salmonella minnesota Re 595 (MLA). Furthermore, P. gingivalis lipid A, but not compound 506 nor MLA, induced low IL-1 beta and high IL-6 production in C3H/HeJ mice. C3H/HeJ T cells in response to P. gingivalis lipid A stimulation resulted in definite IL-2 mRNA and its production, whereas IL-4 response was scarcely active in both C3H/HeN and C3H/HeJ T cells. P. gingivalis lipid A increased tyrosine, serine/threonine phosphorylation of proteins with various major induced bands in splenic B cells of both C3H/HeN and C3H/HeJ mice. Thus, P. gingivalis lipid A stimulated the splenic immunocytes of C3H/HeJ as well as C3H/HeN mice.
authors.affiliation: Department of Oral Microbiology, Osaka University Faculty of Dentistry, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Ogawa
authors.forename: H
authors.initials: H
authors.lastname: Shimauchi
authors.forename: H
authors.initials: H
authors.lastname: Uchida
authors.forename: Y
authors.initials: Y
authors.lastname: Mori
mesh_terms: D000276:Adjuvants, Immunologic / Q000494:pharmacology; D000818:Animals; D001402:B-Lymphocytes / Q000187:drug effects / Q000276:immunology; D004926:Escherichia coli / Q000737:chemistry / Q000276:immunology*; D008050:Lipid A / Q000031:analogs & derivatives / Q000276:immunology* / Q000494:pharmacology*; D008213:Lymphocyte Activation / Q000187:drug effects*; D008262:Macrophage Activation / Q000187:drug effects / Q000276:immunology; D008264:Macrophages / Q000187:drug effects / Q000276:immunology; D008297:Male; D051379:Mice; D008809:Mice, Inbred C3H; D016966:Porphyromonas gingivalis / Q000737:chemistry / Q000276:immunology*; D012475:Salmonella / Q000737:chemistry / Q000276:immunology*; D013154:Spleen / Q000166:cytology / Q000187:drug effects / Q000276:immunology; D013601:T-Lymphocytes / Q000187:drug effects / Q000276:immunology
chemical_list: D000276:Adjuvants, Immunologic; D008050:Lipid A; C048436:monophosphoryl lipid A