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RBM-MHC: A Semi-Supervised Machine-Learning Method for Sample-Specific Prediction of Antigen Presentation by HLA-I Alleles #MMPMID33338400
Bravi B; Tubiana J; Cocco S; Monasson R; Mora T; Walczak AM
Cell Syst 2021[Feb]; 12 (2): 195-202.e9 PMID33338400show ga
The recent increase of immunopeptidomics data, obtained by mass spectrometry or binding assays, opens up possibilities for investigating endogenous antigen presentation by the highly polymorphic human leukocyte antigen class I (HLA-I) protein. State-of-the-art methods predict with high accuracy presentation by HLA alleles that are well represented in databases at the time of release but have a poorer performance for rarer and less characterized alleles. Here, we introduce a method based on Restricted Boltzmann Machines (RBMs) for prediction of antigens presented on the Major Histocompatibility Complex (MHC) encoded by HLA genes-RBM-MHC. RBM-MHC can be trained on custom and newly available samples with no or a small amount of HLA annotations. RBM-MHC ensures improved predictions for rare alleles and matches state-of-the-art performance for well-characterized alleles while being less data demanding. RBM-MHC is shown to be a flexible and easily interpretable method that can be used as a predictor of cancer neoantigens and viral epitopes, as a tool for feature discovery, and to reconstruct peptide motifs presented on specific HLA molecules.
|Algorithms[MESH]
|Alleles[MESH]
|Antigen Presentation/genetics/*immunology[MESH]
|Computational Biology/*methods[MESH]
|Databases, Protein[MESH]
|Epitopes[MESH]
|HLA Antigens/genetics/immunology[MESH]
|Histocompatibility Antigens Class I/*genetics/*immunology[MESH]