title: Specific lysis of melanoma cells by receptor grafted T cells is enhanced by anti-idiotypic monoclonal antibodies directed to the scFv domain of the receptor.
abstract: Malignant transformation of melanocytes is frequently associated with abnormalities in antigen processing and in human leukocyte antigen class I antigen expression. Here, we evaluated a human leukocyte antigen class I antigen-independent approach to target cytotoxic T lymphocytes to melanoma cells by grafting cytotoxic T lymphocytes with a chimeric receptor that consists of both a domain binding to high molecular weight-melanoma associated antigen and a cellular activation domain. The binding domain is a single-chain antibody fragment (scFv) derived from the monoclonal anti-high molecular weight-melanoma associated antigen antibody 763.74 by phage display techniques. The cellular activation domain is the signaling unit of the FcepsilonRI receptor gamma chain. Both domains constitute the chimeric receptor scFv763.74-gammaR. Cytotoxic MD45 T cells grafted with the scFv763.74-gammaR receptor bind specifically to high molecular weight-melanoma associated antigen-positive melanoma cells and lyse melanoma cells in a human leukocyte antigen class I independent fashion. Pre-incubation of receptor grafted T cells with immobilized anti-idiotypic (id) monoclonal antibody MK2-23 binding to the scFv domain of the receptor enhanced the lysis of melanoma cells indicating that the specific cytolytic activity of receptor grafted T cells can be increased by costimulation with cross-linked anti-idiotypic monoclonal antibodies that recognize the antigen binding domain of the chimeric receptor.
authors.affiliation: Department of Dermatology, The Saarland University Hospital, Homburg/Saar, Germany.
authors.forename: U
authors.initials: U
authors.lastname: Reinhold
authors.forename: L
authors.initials: L
authors.lastname: Liu
authors.forename: H C
authors.initials: HC
authors.lastname: Lüdtke-Handjery
authors.forename: C
authors.initials: C
authors.lastname: Heuser
authors.forename: A
authors.initials: A
authors.lastname: Hombach
authors.forename: X
authors.initials: X
authors.lastname: Wang
authors.forename: W
authors.initials: W
authors.lastname: Tilgen
authors.forename: S
authors.initials: S
authors.lastname: Ferrone
authors.forename: H
authors.initials: H
authors.lastname: Abken
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D000888:Antibodies, Anti-Idiotypic / Q000235:genetics / Q000378:metabolism*; D000911:Antibodies, Monoclonal / Q000276:immunology / Q000378:metabolism; D000912:Antibodies, Neoplasm / Q000235:genetics; D000951:Antigens, Neoplasm; D001483:Base Sequence; D002460:Cell Line; D003001:Cloning, Molecular; D003601:Cytotoxicity Tests, Immunologic; D003602:Cytotoxicity, Immunologic / Q000276:immunology*; D005434:Flow Cytometry; D006801:Humans; D007128:Immunoglobulin Fragments / Q000276:immunology; D007135:Immunoglobulin Variable Region / Q000235:genetics / Q000378:metabolism*; D008545:Melanoma / Q000276:immunology*; D058950:Melanoma-Specific Antigens; D051379:Mice; D008807:Mice, Inbred BALB C; D008969:Molecular Sequence Data; D009363:Neoplasm Proteins / Q000276:immunology; D011948:Receptors, Antigen, T-Cell / Q000276:immunology*; D011993:Recombinant Fusion Proteins / Q000235:genetics / Q000276:immunology; D057127:Single-Chain Antibodies; D013602:T-Lymphocytes, Cytotoxic / Q000276:immunology* / Q000378:metabolism
chemical_list: D000888:Antibodies, Anti-Idiotypic; D000911:Antibodies, Monoclonal; D000912:Antibodies, Neoplasm; D000951:Antigens, Neoplasm; D007128:Immunoglobulin Fragments; D007135:Immunoglobulin Variable Region; D058950:Melanoma-Specific Antigens; D009363:Neoplasm Proteins; D011948:Receptors, Antigen, T-Cell; D011993:Recombinant Fusion Proteins; D057127:Single-Chain Antibodies; C119393:scFv 763.74