title: B7-1 (CD80) and B7-2 (CD86) have complementary roles in mediating allergic pulmonary inflammation and airway hyperresponsiveness.
abstract: We examined the roles of B7-1 (CD80) and B7-2 (CD86) in a model of allergic pulmonary inflammation and airway hyperresponsiveness (AHR) by using mice with germline deletions of the B7-1 and/or B7-2 molecules. Multiple parameters of the allergic response were affected to varying degrees by the absence of B7-1 and/or B7-2. Mice lacking both B7-1 and B7-2 had no elevation of serum immunoglobulin E, lack of airway eosinophilia, and no AHR. These same disease parameters were also reduced in mice lacking either B7-1 or B7-2. Lack of B7-1 and/or B7-2 resulted in an increase in T-helper 1 cytokine production. Our observations suggest that whereas B7-2 is quantitatively more significant in the induction of this response, B7-1 and B7-2 may have complementary roles in mediating the development of allergic pulmonary inflammation.
authors.affiliation: Department of Pathology, Brigham and Women's Hospital, Boston, MA 02115, USA.
authors.forename: D A
authors.initials: DA
authors.lastname: Mark
authors.forename: C E
authors.initials: CE
authors.lastname: Donovan
authors.forename: G T
authors.initials: GT
authors.lastname: De Sanctis
authors.forename: H Z
authors.initials: HZ
authors.lastname: He
authors.forename: M
authors.initials: M
authors.lastname: Cernadas
authors.forename: L
authors.initials: L
authors.lastname: Kobzik
authors.forename: D L
authors.initials: DL
authors.lastname: Perkins
authors.forename: A
authors.initials: A
authors.lastname: Sharpe
authors.forename: P W
authors.initials: PW
authors.lastname: Finn
mesh_terms: D000818:Animals; D015703:Antigens, CD / Q000235:genetics / Q000276:immunology*; D018122:B7-1 Antigen / Q000235:genetics / Q000276:immunology*; D051940:B7-2 Antigen; D016535:Bronchial Hyperreactivity / Q000276:immunology*; D004802:Eosinophilia / Q000235:genetics / Q000276:immunology; D017353:Gene Deletion; D018095:Germ-Line Mutation; D007073:Immunoglobulin E / Q000097:blood; D007371:Interferon-gamma / Q000097:blood; D015847:Interleukin-4 / Q000097:blood; D015848:Interleukin-5 / Q000097:blood; D008168:Lung / Q000276:immunology; D008297:Male; D008562:Membrane Glycoproteins / Q000235:genetics / Q000276:immunology*; D051379:Mice; D018345:Mice, Knockout; D012130:Respiratory Hypersensitivity / Q000276:immunology*; D014409:Tumor Necrosis Factor-alpha / Q000378:metabolism
chemical_list: D015703:Antigens, CD; D018122:B7-1 Antigen; D051940:B7-2 Antigen; C497965:Cd86 protein, mouse; D015848:Interleukin-5; D008562:Membrane Glycoproteins; D014409:Tumor Necrosis Factor-alpha; D015847:Interleukin-4; D007073:Immunoglobulin E; D007371:Interferon-gamma