A comprehensive library of canonical and non-canonical MHC class I antigens for cancer vaccine development.
Bedran, G.; Wang, T.; Pankanin, D.; Weke, K.; Laird, A.; Battail, C.; Zanzotto, F. M.; Pesquita, C.; Axelson, H.; Rajan, A.; Harrison, D. J.; Palkowski, A.; Pawlik, M.; Parys, M.; O'Neill, R.; Brennan, P. M.; Symeonides, S.; Goodlett, D. R.; Litchfield, K.; Fahraeus, R.; Hupp, T. R.; Kote, S.; Alfaro, J. A.
Show abstract
A longstanding disconnect between the growing number of MHC Class I immunopeptidomic studies and genomic medicine hinders cancer vaccine design. We develop COD-dipp to genomically map the full spectrum of detected canonical and non-canonical (non-exonic) MHC Class I antigens from 26 cancer studies. We demonstrate that patient mutations in regions overlapping physically identified antigens better predict immunotherapy response when compared to neoantigen predictions. We suggest a vaccine design approach using 140,966 highly immune-visible regions of the genome annotated by their expression and haplotype frequency in the human population. These regions tend to be highly conserved, mutated in cancer and harbor 7.8 times more immunogenicity. Intersecting pan-cancer mutations with these immune surveilled regions revealed a potential to create off-the-shelf multi-epitope vaccines against public neoantigens. Here we release COD-dipp, a cancer vaccine toolkit as a web-application (https://www.proteogenomics.ca/COD-dipp) and open-source high-throughput resource.
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