title: Expression of B7-2 (CD86) molecules by Reed-Sternberg cells of Hodgkin's disease.
abstract: Ligation of CD28 on T cells with its natural ligands B7-1 (CD80) or B7-2 (CD86) provides a major costimulatory signal for T cells and is of potential importance for tumor rejection. We previously reported a strong expression of B7-1 on Reed-Sternberg cells and anaplastic large cell lymphoma cells. We report here our findings on B7-2 expression by malignant lymphomas (n = 70). B7-2 was present on the neoplastic cells of anaplastic large cell lymphoma in two of three cases studied, and on a subpopulation of the malignant cells in one out of four cases of follicular lymphoma. B7-2 was not expressed by the neoplastic cells of the other non-Hodgkin's lymphomas (n = 32), including T cell-rich B cell lymphoma. In contrast, Reed-Sternberg cells in lymph nodes affected by Hodgkin's disease are strongly positive for B7-2 (n = 31). Evidence for a functional correlate of this expression was obtained by our findings that the combination of anti-B7-1 and anti-B7-2 monoclonal antibodies was more effective than each separately in blocking allogeneic T cell activation (proliferation and cytokine secretion) by Hodgkin's disease-derived cell lines as stimulators. The possible role of B7-1 and B7-2 expression for the course and symptomatology of Hodgkin's disease is discussed.
authors.affiliation: Laboratory of Experimental Immunology, Department of Pediatrics, Catholic University of Leuven, Belgium.
authors.forename: S W
authors.initials: SW
authors.lastname: Van Gool
authors.forename: J
authors.initials: J
authors.lastname: Delabie
authors.forename: P
authors.initials: P
authors.lastname: Vandenberghe
authors.forename: L
authors.initials: L
authors.lastname: Coorevits
authors.forename: C
authors.initials: C
authors.lastname: De Wolf-Peeters
authors.forename: J L
authors.initials: JL
authors.lastname: Ceuppens
mesh_terms: D015703:Antigens, CD / Q000032:analysis / Q000096:biosynthesis*; D051940:B7-2 Antigen; D002478:Cells, Cultured; D016207:Cytokines / Q000096:biosynthesis; D006689:Hodgkin Disease / Q000276:immunology* / Q000473:pathology; D006801:Humans; D008213:Lymphocyte Activation; D016393:Lymphoma, B-Cell / Q000276:immunology / Q000473:pathology; D008224:Lymphoma, Follicular / Q000276:immunology / Q000473:pathology; D016399:Lymphoma, T-Cell / Q000276:immunology / Q000473:pathology; D008562:Membrane Glycoproteins / Q000032:analysis / Q000096:biosynthesis*; D016539:Reed-Sternberg Cells / Q000276:immunology* / Q000473:pathology; D014407:Tumor Cells, Cultured
chemical_list: D015703:Antigens, CD; D051940:B7-2 Antigen; C497964:CD86 protein, human; D016207:Cytokines; D008562:Membrane Glycoproteins