Evidence map›Paper›PMID 31578220›Full record

ArticleMolecular & cellular proteomics : MCP2019

NNAlign_MA; MHC Peptidome Deconvolution for Accurate MHC Binding Motif Characterization and Improved T-cell Epitope Predictions.

Bruno Alvarez, Birkir Reynisson, Carolina Barra, Søren Buus, Nicola Ternette, Tim Connelley, Massimo Andreatta, Morten Nielsen

Abstract readEvaluation Study
In one paragraph

Article in Molecular & cellular proteomics : MCP, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 73 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
73citing papers in PubMed, 3 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

73 citing papers in PubMed, 3 syntheses or guidelines pooled it.

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13 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

Bruno AlvarezInstituto de Investigaciones Biotecnológicas, Universidad Nacional de San Martín, San Martín, Argentina.
Birkir ReynissonDepartment of Bio and Health Informatics, Technical University of Denmark, Lyngby, Denmark.
Carolina BarraInstituto de Investigaciones Biotecnológicas, Universidad Nacional de San Martín, San Martín, Argentina.
Søren BuusDepartment of Immunology and Microbiology, Faculty of Health Sciences, University of Copenhagen, Denmark.
Nicola TernetteThe Jenner Institute, Nuffield Department of Medicine, Oxford, United Kingdom.
Tim ConnelleyRoslin Institute, Edinburgh, Midlothian, United Kingdom.
Massimo AndreattaInstituto de Investigaciones Biotecnológicas, Universidad Nacional de San Martín, San Martín, Argentina.
Morten NielsenInstituto de Investigaciones Biotecnológicas, Universidad Nacional de San Martín, San Martín, Argentina; Department of Bio and Health Informatics, Technical University of Denmark, Lyngby, Denmark. Electronic address: mailto:morni@dtu.dk.

Funding

NIAID NIH HHS HHSN272201200010C
6 · The paper itself

Abstract

The set of peptides presented on a cell's surface by MHC molecules is known as the immunopeptidome. Current mass spectrometry technologies allow for identification of large peptidomes, and studies have proven these data to be a rich source of information for learning the rules of MHC-mediated antigen presentation. Immunopeptidomes are usually poly-specific, containing multiple sequence motifs matching the MHC molecules expressed in the system under investigation. Motif deconvolution -the process of associating each ligand to its presenting MHC molecule(s)- is therefore a critical and challenging step in the analysis of MS-eluted MHC ligand data. Here, we describe NNAlign_MA, a computational method designed to address this challenge and fully benefit from large, poly-specific data sets of MS-eluted ligands. NNAlign_MA simultaneously performs the tasks of (1) clustering peptides into individual specificities; (2) automatic annotation of each cluster to an MHC molecule; and (3) training of a prediction model covering all MHCs present in the training set. NNAlign_MA was benchmarked on large and diverse data sets, covering class I and class II data. In all cases, the method was demonstrated to outperform state-of-the-art methods, effectively expanding the coverage of alleles for which accurate predictions can be made, resulting in improved identification of both eluted ligands and T-cell epitopes. Given its high flexibility and ease of use, we expect NNAlign_MA to serve as an effective tool to increase our understanding of the rules of MHC antigen presentation and guide the development of novel T-cell-based therapeutics.

Indexed as

AlgorithmsAmino Acid MotifsAnimalsBenchmarkingCattleCell LineComputational BiologyDatabases, ProteinDatasets as TopicEpitopes, T-LymphocyteHistocompatibility Antigens Class IHistocompatibility Antigens Class IIHumansLigandsMachine LearningMass SpectrometryEpitopes, T-LymphocyteHistocompatibility Antigens Class IHistocompatibility Antigens Class IILigandsPeptidesalgorithmsantigen presentationBioinformaticsbioinformatics softwareimmunoinformaticsimmunologyimmunopeptidomicsmachine learningmass spectrometry

Identifiers

PMID31578220
PMCPMC6885703

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.