Immunization against polyoma tumors with synthetic peptides derived from the sequences of middle-and large-T antigens

✍ Scribed by Git Reinholdsson-Ljunggren; Torbjörn Ramqvist; Lars Ährlund-Richter; Tina Dalianis

• Publisher: John Wiley and Sons
• Year: 1992
• Tongue: French
• Weight: 576 KB
• Volume: 50
• Category: Article
• ISSN: 0020-7136
• DOI: 10.1002/ijc.2910500128

✦ Synopsis

We have used 9 synthetic peptides corresponding to sequences of polyoma virus small-T, middle-T and large-T antigens as immunogens in order to map antigenic epitopes that can induce polyoma-tumor-specific immunity in different mouse strains. We found that immunization of mice with synthetic peptides derived from amino acid (aa) sequences common to all 3 T-antigens (aa I -I 9). or sequences common to only middle-T and small-T (aa 162-176). as well as synthetic peptides unique for middle-T (aa 269-282 and 37 1-38 I). or unique for large-T (aa 108-124, 316-333 and 436449) can induce immunity against polyoma tumors. The synthetic peptides can be divided into 3 types with regard to immunogenicity; (i) peptides that immunize in more than one mouse strain and may represent immunodominant sites, (ii) peptides that may be immunogenic in only one strain, and thus strain-specific, and finally (iii) peptides that do not immunize in the strains tested so far.