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MHC-I-presented non-canonical antigens expand the cancer immunotherapy targets in acute myeloid leukemia
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MHC-I-presented non-canonical antigens expand the cancer immunotherapy targets in acute myeloid leukemia
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Journal Article
MHC-I-presented non-canonical antigens expand the cancer immunotherapy targets in acute myeloid leukemia
2024
Overview
Identification of tumor neoantigens is indispensable for the development of cancer immunotherapies. However, we are still lacking knowledge about the potential neoantigens derived from sequences outside protein-coding regions. Here, we comprehensively characterized the immunopeptidome landscape by integrating multi-omics data in acute myeloid leukemia (AML). Both canonical and non-canonical MHC-associated peptides (MAPs) in AML were identified. We found that the quality and characteristics of ncMAPs are comparable or superior to cMAPs, suggesting ncMAPs are indispensable sources for tumor neoantigens. We further proposed a computational framework to prioritize the neoantigens by integrating additional transcriptome and immunopeptidome in normal tissues. Notably, 6 of prioritized 13 neoantigens were derived from ncMAPs. The expressions of corresponding source genes are highly related to infiltrations of immune cells. Finally, a risk model was developed, which exhibited good performance for clinical prognosis in AML. Our findings expand potential cancer immunotherapy targets and provide in-depth insights into AML treatment, laying a new foundation for precision therapies in AML.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
