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Sensitive neoantigen discovery by real-time mutanome-guided immunopeptidomics

Ilja E. Shapiro, Florian Huber, Justine Michaux and Michal Bassani-Sternberg ()
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Ilja E. Shapiro: University of Lausanne (UNIL) and Lausanne University Hospital (CHUV)
Florian Huber: University of Lausanne (UNIL) and Lausanne University Hospital (CHUV)
Justine Michaux: University of Lausanne (UNIL) and Lausanne University Hospital (CHUV)
Michal Bassani-Sternberg: University of Lausanne (UNIL) and Lausanne University Hospital (CHUV)

Nature Communications, 2025, vol. 16, issue 1, 1-16

Abstract: Abstract Targeting cancer-specific HLA-peptide complexes is a promising approach in immunotherapy. Mutated neoantigens are excellent targets due to their immunogenicity and cancer-specificity. Mass spectrometry (MS)-based immunopeptidomics guides the selection of naturally presented immunogenic targets within the immunopeptidome, refining immunogenicity predictions. Implementation in clinical settings, however, must achieve global depth, capturing the entirety of the immunopeptidome, maintain high target sensitivity, and cater to scarce sample inputs and short turnaround time. Here, we present NeoDiscMS, an extension of NeoDisc that enables the acquisition of personalized immunopeptidomics data. Leveraging next-generation sequencing-guided real-time spectral acquisitions, NeoDiscMS maximizes sensitivity with minimal loss of global depth. Designed for effectiveness and ease of use, with minimal effort required for implementation, NeoDiscMS enhances the detection of peptides derived from tumor-associated antigens by up to 20% and improves confidence in neoantigen identification compared to the gold standard method. NeoDiscMS advances personalization in clinical antigen discovery with more confident neoantigen detection and easy implementation.

Date: 2025
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DOI: 10.1038/s41467-025-62647-4

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