title: Induction of HLA-A2-restricted CTL responses by a tubular structure carrying human melanoma epitopes.
abstract: Epitope-based vaccination strategies designed to induce strong tumor-specific CD8(+) T cell responses are being widely considered for cancer immunotherapy. Here, two recombinant tubular structures, NS1-Mela 1 and NS1-Mela 2, carrying, respectively two HLA-A2 epitopes derived from human melanoma antigens were constructed and their capability to induce CTL responses in vivo were studied in HLA-A2 transgenic mice. Strong CTL responses specific for GnT-V/NA 17-A and gp100 (154-162) epitopes were generated in HLA-A2 transgenic mice immunized by the construct NS1-Mela l carrying these two epitopes. The second construct NS1-Mela 2 carrying both Tyrosinase (369-377Da) and Melan-A/Mart-1 (27-35) epitopes induced a weak Tyrosinase-specific CTL response in mice but failed to induce specific CTL responses against the Melan-A/Mart-1 (27-35) epitope in the tested mice. Thus, recombinant tubular structures containing multiple tumoral epitopes may lead to new strategies for the induction of strong tumor-specific CTL responses in cancer patients.
authors.affiliation: Division of Geographic Medicine, Department of Medicine, School of Medicine, University of Alabama at Birmingham, 35924, USA.
authors.forename: Mrinal K
authors.initials: MK
authors.lastname: Ghosh
authors.forename: Cui-Ling
authors.initials: CL
authors.lastname: Li
authors.forename: Catherine
authors.initials: C
authors.lastname: Fayolle
authors.forename: Gilles
authors.initials: G
authors.lastname: Dadaglio
authors.forename: Aileen
authors.initials: A
authors.lastname: Murphy
authors.forename: François A
authors.initials: FA
authors.lastname: Lemonnier
authors.forename: Polly
authors.initials: P
authors.lastname: Roy
authors.forename: Claude
authors.initials: C
authors.lastname: Leclerc
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D016367:Baculoviridae / Q000235:genetics; D001483:Base Sequence; D015153:Blotting, Western; D019496:Cancer Vaccines / Q000276:immunology; D017931:DNA Primers; D004797:Enzyme-Linked Immunosorbent Assay; D000939:Epitopes / Q000276:immunology*; D015789:HLA-A2 Antigen / Q000276:immunology*; D006801:Humans; D007371:Interferon-gamma / Q000096:biosynthesis; D008545:Melanoma / Q000276:immunology*; D051379:Mice; D018345:Mice, Knockout; D008822:Mice, Transgenic; D013602:T-Lymphocytes, Cytotoxic / Q000276:immunology*
chemical_list: D019496:Cancer Vaccines; D017931:DNA Primers; D000939:Epitopes; D015789:HLA-A2 Antigen; D007371:Interferon-gamma