title: CD40-activated human B cells: an alternative source of highly efficient antigen presenting cells to generate autologous antigen-specific T cells for adoptive immunotherapy.
abstract: Multiple clinical trials have shown the efficacy of adoptively transferred allogeneic antigen-specific T cells for the treatment of viral infections and relapsed hematologic malignancies. In contrast, the therapeutic potential of autologous antigen-specific T cells has yet to be established since it has been technically difficult to generate sufficient numbers of these T cells, ex vivo. A major obstacle to the success of this objective derives from our inability to simply and rapidly isolate and/or expand large numbers of highly efficient antigen presenting cells (APCs) for repetitive stimulations of antigen-specific T cells in vitro. We show that autologous CD40-activated B cells represent a readily available source of highly efficient APC that appear to have several important advantages over other APCs for ex vivo T cell expansion including: (a) methodological simplicity necessary to generate continuously large numbers of APCs from just 50 cm3 of peripheral blood without loss of APC function; (b) capacity to induce high peak T cell proliferation and interferon-gamma production without IL-10 production; (c) ease in cryopreservation; and (d) markedly reduced cost. We, therefore, contend that CD40-activated B cells are an alternative source of highly efficient APCs with which to generate antigen-specific T cells ex vivo for autologous adoptive immunotherapy.
authors.affiliation: Department of Adult Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts 02115, USA. schultze@mbcrr.harvard.edu
authors.forename: J L
authors.initials: JL
authors.lastname: Schultze
authors.forename: S
authors.initials: S
authors.lastname: Michalak
authors.forename: M J
authors.initials: MJ
authors.lastname: Seamon
authors.forename: G
authors.initials: G
authors.lastname: Dranoff
authors.forename: K
authors.initials: K
authors.lastname: Jung
authors.forename: J
authors.initials: J
authors.lastname: Daley
authors.forename: J C
authors.initials: JC
authors.lastname: Delgado
authors.forename: J G
authors.initials: JG
authors.lastname: Gribben
authors.forename: L M
authors.initials: LM
authors.lastname: Nadler
mesh_terms: D016475:3T3 Cells; D000818:Animals; D000938:Antigen-Presenting Cells / Q000276:immunology*; D000951:Antigens, Neoplasm / Q000276:immunology; D000956:Antigens, Viral / Q000276:immunology; D001402:B-Lymphocytes / Q000276:immunology*; D019013:CD40 Antigens / Q000276:immunology*; D002455:Cell Division; D002478:Cells, Cultured; D003362:Cost-Benefit Analysis; D003601:Cytotoxicity Tests, Immunologic; D003713:Dendritic Cells / Q000166:cytology / Q000276:immunology; D006801:Humans; D016219:Immunotherapy, Adoptive; D009980:Influenza A virus / Q000276:immunology; D007371:Interferon-gamma / Q000096:biosynthesis; D016753:Interleukin-10 / Q000378:metabolism; D007963:Leukocytes, Mononuclear / Q000166:cytology / Q000276:immunology; D051379:Mice; D014442:Monophenol Monooxygenase / Q000276:immunology; D010446:Peptide Fragments / Q000138:chemical synthesis / Q000276:immunology; D013601:T-Lymphocytes / Q000276:immunology*; D013997:Time Factors; D014407:Tumor Cells, Cultured; D014763:Viral Matrix Proteins / Q000138:chemical synthesis / Q000276:immunology
chemical_list: D000951:Antigens, Neoplasm; D000956:Antigens, Viral; D019013:CD40 Antigens; D010446:Peptide Fragments; D014763:Viral Matrix Proteins; C098952:influenza virus membrane protein (58-66); D016753:Interleukin-10; D007371:Interferon-gamma; D014442:Monophenol Monooxygenase