title: TNFalpha kinoid vaccination-induced neutralizing antibodies to TNFalpha protect mice from autologous TNFalpha-driven chronic and acute inflammation.
abstract: The proinflammatory cytokine TNFalpha is a potent mediator of septic shock and a therapeutic target for chronic inflammatory pathologies including rheumatoid arthritis and Crohn's disease. As an alternative to anti-human TNFalpha (hTNFalpha) mAbs and other hTNFalpha blocker approved drugs, we developed an active anti-hTNFalpha immunotherapy, based on a vaccine comprised of a keyhole limpet hemocyanin-hTNFalpha heterocomplex immunogen (hTNFalpha kinoid) adjuvanted in incomplete Freund's adjuvant. In mice transgenic for hTNFalpha (TTg mice), hTNFalpha kinoid vaccination elicited high titers of Abs that neutralized hTNFalpha bioactivities but did not result in a cellular response to hTNFalpha. The vaccine was safe and effective in two experimental models. Kinoid-immunized but not control TTg mice resisted hTNFalpha-driven shock in one model and were prevented from spontaneous arthritis, inflammatory synovitis, and articular destruction in a second model. These data demonstrate an anti-cytokine induction of autoimmune protection against both acute and chronic hTNFalpha exposure. They show that active vaccination against a human cytokine can be achieved, and that the immune response can be effective and safe.
authors.affiliation: Neovacs, Incorporated, Université Pierre et Marie Curie, 96 Boulevard Raspail, 75006 Paris, France.
authors.forename: Hélène
authors.initials: H
authors.lastname: Le Buanec
authors.forename: Laure
authors.initials: L
authors.lastname: Delavallée
authors.forename: Natacha
authors.initials: N
authors.lastname: Bessis
authors.forename: Sébastien
authors.initials: S
authors.lastname: Paturance
authors.forename: Bernard
authors.initials: B
authors.lastname: Bizzini
authors.forename: Robert
authors.initials: R
authors.lastname: Gallo
authors.forename: Daniel
authors.initials: D
authors.lastname: Zagury
authors.forename: Marie-Christophe
authors.initials: MC
authors.lastname: Boissier
mesh_terms: D000704:Analysis of Variance; D000818:Animals; D019138:Antibodies, Blocking / Q000032:analysis / Q000096:biosynthesis*; D002850:Chromatography, Gel; D004591:Electrophoresis, Polyacrylamide Gel; D006433:Hemocyanins / Q000276:immunology; D015151:Immunoblotting; D007167:Immunotherapy / Q000379:methods*; D007249:Inflammation / Q000276:immunology / Q000517:prevention & control*; D007592:Joint Diseases / Q000276:immunology / Q000517:prevention & control*; D051379:Mice; D008822:Mice, Transgenic; D014409:Tumor Necrosis Factor-alpha / Q000276:immunology*; D014611:Vaccination / Q000379:methods*
chemical_list: D019138:Antibodies, Blocking; D014409:Tumor Necrosis Factor-alpha; D006433:Hemocyanins; C032808:keyhole-limpet hemocyanin