Cancer vaccines based on whole-tumor lysate or neoepitopes with validated HLA binding outperform those with predicted HLA-binding affinity

Summary: Antigen selection and prioritization represent crucial determinants of vaccines’ efficacy. Here, we compare two personalized dendritic cell-based vaccination strategies using whole-tumor lysate or neoantigens. Data in mouse and in cancer patients demonstrate that peptide vaccines using neoa...

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Bibliographic Details
Main Authors: Hajer Fritah, Michele Graciotti, Cheryl Lai-Lai Chiang, Anne-Laure Huguenin- Bergenat, Rémy Petremand, Ritaparna Ahmed, Philippe Guillaume, Julien Schmidt, Brian J. Stevenson, David Gfeller, Alexandre Harari, Lana E. Kandalaft
Format: Article
Language:English
Published: Elsevier 2023-04-01
Series:iScience
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Online Access:http://www.sciencedirect.com/science/article/pii/S2589004223003656
Description
Summary:Summary: Antigen selection and prioritization represent crucial determinants of vaccines’ efficacy. Here, we compare two personalized dendritic cell-based vaccination strategies using whole-tumor lysate or neoantigens. Data in mouse and in cancer patients demonstrate that peptide vaccines using neoantigens predicted on the sole basis of in silico peptide-major histocompatibility complex (MHC) binding affinity underperform relative to whole-tumor-lysate vaccines. In contrast, effective in vitro peptide-MHC binding affinity and peptide immunogenicity significantly improve the prioritization of tumor-rejecting neoepitopes and result in more efficacious vaccines.
ISSN:2589-0042