title: CD27-mediated activation of murine NK cells.
abstract: CD27, a member of the TNF receptor superfamily, has been implicated in T cell activation, T cell development, and T cell-dependent Ab production by B cells. In the present study we examined the expression and function of CD27 on murine NK cells. Murine NK cells constitutively expressed CD27 on their surface. Stimulation with immobilized anti-CD27 mAb or murine CD27 ligand (CD70) transfectans solely could induce proliferation and IFN-gamma production of freshly isolated NK cells and enhanced the proliferation and IFN-gamma production of anti-NK1.1-sutimulated NK cells. Although NK cell cytotoxicity was not triggered by anti-CD27 mAb or against CD70 transfectants, prestimulation via CD27 enhanced the cytotoxic activity of NK cells in an IFN-gamma-dependent manner. These results suggest that CD27-mediated activation may be involved in the NK cell-mediated innate immunity against virus-infected or transformed cells expressing CD70.
authors.affiliation: Department of Immunology, Juntendo University School of Medicine, Bunkyo-ku, Tokyo, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Takeda
authors.forename: H
authors.initials: H
authors.lastname: Oshima
authors.forename: Y
authors.initials: Y
authors.lastname: Hayakawa
authors.forename: H
authors.initials: H
authors.lastname: Akiba
authors.forename: M
authors.initials: M
authors.lastname: Atsuta
authors.forename: T
authors.initials: T
authors.lastname: Kobata
authors.forename: K
authors.initials: K
authors.lastname: Kobayashi
authors.forename: M
authors.initials: M
authors.lastname: Ito
authors.forename: H
authors.initials: H
authors.lastname: Yagita
authors.forename: K
authors.initials: K
authors.lastname: Okumura
mesh_terms: D000276:Adjuvants, Immunologic / Q000502:physiology; D000818:Animals; D000911:Antibodies, Monoclonal / Q000378:metabolism; D015703:Antigens, CD; D053282:CD27 Ligand; D002478:Cells, Cultured; D003602:Cytotoxicity, Immunologic / Q000276:immunology; D007371:Interferon-gamma / Q000096:biosynthesis / Q000502:physiology; D007694:Killer Cells, Natural / Q000276:immunology* / Q000378:metabolism; D008024:Ligands; D008213:Lymphocyte Activation / Q000276:immunology*; D008297:Male; D008565:Membrane Proteins / Q000502:physiology; D051379:Mice; D008810:Mice, Inbred C57BL; D014407:Tumor Cells, Cultured; D018127:Tumor Necrosis Factor Receptor Superfamily, Member 7 / Q000096:biosynthesis / Q000276:immunology / Q000378:metabolism / Q000502:physiology*
chemical_list: D000276:Adjuvants, Immunologic; D000911:Antibodies, Monoclonal; D015703:Antigens, CD; D053282:CD27 Ligand; C505772:Cd70 protein, mouse; D008024:Ligands; D008565:Membrane Proteins; D018127:Tumor Necrosis Factor Receptor Superfamily, Member 7; D007371:Interferon-gamma