title: B7-1 and B7-2 costimulatory molecules activate differentially the Th1/Th2 developmental pathways: application to autoimmune disease therapy.
abstract: CD4 T helper precursor cells mature along two alternative pathways, Th1 and Th2. Here we show that these pathways are differentially activated by two costimulatory molecules, B7-1 and B7-2. Using anti-B7 antibodies, this developmental step was manipulated both in vitro and in vivo in experimental allergic encephalomyelitis (EAE). Anti-B7-1 reduced the incidence of disease while anti-B7-2 increased disease severity. Neither antibody affected overall T cell induction but rather altered cytokine profile. Administration of anti-B7-1 at immunization resulted in predominant generation of Th2 clones whose transfer both prevented induction of EAE and abrogated established disease. Since co-treatment with anti-IL-4 antibody prevented disease amelioration, costimulatory molecules may directly affect initial cytokine secretion. Thus, interaction of B7-1 and B7-2 with shared counterreceptors CD28 and CTLA-4 results in very different outcomes in clinical disease by influencing commitment of precursors to a Th1 or Th2 lineage.
authors.affiliation: Department of Neurology, Harvard Medical School, Boston, Massachusetts 02115.
authors.forename: V K
authors.initials: VK
authors.lastname: Kuchroo
authors.forename: M P
authors.initials: MP
authors.lastname: Das
authors.forename: J A
authors.initials: JA
authors.lastname: Brown
authors.forename: A M
authors.initials: AM
authors.lastname: Ranger
authors.forename: S S
authors.initials: SS
authors.lastname: Zamvil
authors.forename: R A
authors.initials: RA
authors.lastname: Sobel
authors.forename: H L
authors.initials: HL
authors.lastname: Weiner
authors.forename: N
authors.initials: N
authors.lastname: Nabavi
authors.forename: L H
authors.initials: LH
authors.lastname: Glimcher
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D000911:Antibodies, Monoclonal / Q000008:administration & dosage / Q000627:therapeutic use; D015703:Antigens, CD; D018122:B7-1 Antigen / Q000276:immunology*; D051940:B7-2 Antigen; D002454:Cell Differentiation; D002478:Cells, Cultured; D004681:Encephalomyelitis, Autoimmune, Experimental / Q000188:drug therapy / Q000276:immunology* / Q000473:pathology / Q000517:prevention & control; D005260:Female; D016219:Immunotherapy, Adoptive; D007371:Interferon-gamma / Q000096:biosynthesis; D015847:Interleukin-4 / Q000096:biosynthesis / Q000502:physiology; D008198:Lymph Nodes / Q000166:cytology / Q000378:metabolism; D008562:Membrane Glycoproteins / Q000276:immunology*; D051379:Mice; D008822:Mice, Transgenic; D008969:Molecular Sequence Data; D004676:Myelin Basic Protein / Q000276:immunology; D011510:Proteolipids / Q000008:administration & dosage; D018417:Th1 Cells / Q000166:cytology / Q000276:immunology*; D018418:Th2 Cells / Q000166:cytology / Q000276:immunology*; D014611:Vaccination
chemical_list: D000911:Antibodies, Monoclonal; D015703:Antigens, CD; D018122:B7-1 Antigen; D051940:B7-2 Antigen; C497965:Cd86 protein, mouse; D008562:Membrane Glycoproteins; D004676:Myelin Basic Protein; D011510:Proteolipids; D015847:Interleukin-4; D007371:Interferon-gamma