title: The right place at the right time: novel B7 family members regulate effector T cell responses.
abstract: Recent identification of novel members of the B7-family of costimulatory ligands has illustrated their importance for costimulation, not only for initiation of adaptive immune responses, but also for regulation of activated effector lymphocytes. Two key features that distinguish these novel molecules from classical B7.1 and B7.2 costimulatory ligands are their broader expression in non-lymphoid tissues and their binding to receptors induced on activated T cells. Whereas B7.1/B7.2-CD28 interactions are important for priming naïve T cells, novel costimulatory interactions appear critical in regulating effector lymphocytes at sites of infection in the periphery.
authors.affiliation: Division of Immunology, University of California, Berkeley, 441 Life Sciences Addition, Berkeley, CA 94720, USA.
authors.forename: Linda
authors.initials: L
authors.lastname: Liang
authors.forename: William C
authors.initials: WC
authors.lastname: Sha
mesh_terms: D000818:Animals; D000917:Antibody Formation; D015703:Antigens, CD; D000945:Antigens, Differentiation, T-Lymphocyte / Q000502:physiology; D060887:B7 Antigens; D018122:B7-1 Antigen / Q000502:physiology*; D060890:B7-H1 Antigen; D001798:Blood Proteins; D018414:CD8-Positive T-Lymphocytes / Q000276:immunology; D006801:Humans; D060889:Inducible T-Cell Co-Stimulator Protein; D036341:Intercellular Signaling Peptides and Proteins; D008562:Membrane Glycoproteins; D010455:Peptides / Q000502:physiology; D061027:Programmed Cell Death 1 Ligand 2 Protein; D011971:Receptors, Immunologic; D013601:T-Lymphocytes / Q000276:immunology*; D018417:Th1 Cells / Q000276:immunology; D018418:Th2 Cells / Q000276:immunology
chemical_list: D015703:Antigens, CD; D000945:Antigens, Differentiation, T-Lymphocyte; D060887:B7 Antigens; D018122:B7-1 Antigen; D060890:B7-H1 Antigen; D001798:Blood Proteins; C423236:CD274 protein, human; C423237:CD276 protein, human; C556692:ICOS protein, human; D060889:Inducible T-Cell Co-Stimulator Protein; D036341:Intercellular Signaling Peptides and Proteins; D008562:Membrane Glycoproteins; C556977:PDCD1LG2 protein, human; D010455:Peptides; D061027:Programmed Cell Death 1 Ligand 2 Protein; D011971:Receptors, Immunologic