title: Overlapping synthetic peptides as vaccines.
abstract: Several vaccine strategies aim to generate cell-mediated immunity (CMI) against microorganisms or tumors. While epitope-based vaccines offer advantages, knowledge of specific epitopes and frequency of major histocompatibility complex (MHC) alleles is required. Here we show that using promiscuous overlapping synthetic peptides (OSP) as immunogens generated peptide-specific CMI in all vaccinated outbred mice and in different strains of inbred mice; CMI responses also recognized viral proteins. OSP immunogens also induced CMI ex vivo in dendritic cell/T-cell cocultures involving cells from individuals with different HLA haplotypes. Thus, broad CMI was induced by OSP in different experimental settings, using different immunogens, without identifying either epitopes or MHC backgrounds of the vaccinees.
authors.affiliation: Department of Cancer Immunology and AIDS, Dana-Farber Cancer Institute, Boston, MA 02115, USA.
authors.forename: Shisong
authors.initials: S
authors.lastname: Jiang
authors.forename: Ruijiang
authors.initials: R
authors.lastname: Song
authors.forename: Sergei
authors.initials: S
authors.lastname: Popov
authors.forename: Saied
authors.initials: S
authors.lastname: Mirshahidi
authors.forename: Ruth M
authors.initials: RM
authors.lastname: Ruprecht
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D003713:Dendritic Cells / Q000276:immunology; D015699:HIV Envelope Protein gp120 / Q000276:immunology; D006680:HLA Antigens / Q000276:immunology; D007111:Immunity, Cellular / Q000276:immunology; D008213:Lymphocyte Activation; D051379:Mice; D008807:Mice, Inbred BALB C; D008810:Mice, Inbred C57BL; D013602:T-Lymphocytes, Cytotoxic / Q000276:immunology; D022223:Vaccines, Subunit / Q000737:chemistry* / Q000276:immunology*
chemical_list: D015699:HIV Envelope Protein gp120; D006680:HLA Antigens; D022223:Vaccines, Subunit