Cited by 149vaccines and immunoinformatics approachesMonoclonal and Polyclonal Antibodies ResearchMachine Learning in Bioinformatics

Antibody specific B-cell epitope predictions: leveraging information from antibody–antigen protein complexes

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Jespersen, Martin Closter, Mahajan, Swapnil, Peters, Bjoern, Nielsen, Morten, Marcatili, Paolo·2019·Frontiers in Immunology

Abstract

B-cells can neutralize pathogenic molecules by targeting them with extreme specificity using receptors secreted or expressed on their surface (antibodies). This is achieved via molecular interactions between the paratope (i.e., the antibody residues involved in the binding) and the interacting region (epitope) of its target molecule (antigen). Discerning the rules that define this specificity would have profound implications for our understanding of humoral immunogenicity and its applications. The aim of this work is to produce improved, antibody-specific epitope predictions by exploiting features derived from the antigens and their cognate antibodies structures, and combining them using statistical and machine learning algorithms. We have identified several geometric and physicochemical features that are correlated in interacting paratopes and epitopes, used them to develop a Monte Carlo algorithm to generate putative epitopes-paratope pairs, and train a machine-learning model to score them. We show that, by including the structural and physicochemical properties of the paratope, we improve the prediction of the target of a given B-cell receptor. Moreover, we demonstrate a gain in predictive power both in terms of identifying the cognate antigen target for a given antibody and the antibody target for a given antigen, exceeding the results of other available tools.

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  • Arbitrary molecular surfaces appear to be indistinguishable from epitope regions, suggesting that predictions should be performed with reference to a particular antibody.

    “However, arbitrary molecular surfaces appear to be indistinguishable from epitope regions [167–169] suggesting that predictions should be performed with reference to a particular antibody [116, 118–120].”

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Authors
Jespersen, M. C., Mahajan, S., Peters, B., Nielsen, M., & Marcatili, P.
Affiliations
  • Technical University of Denmark (DK)
  • La Jolla Institute for Immunology (US)
  • National University of General San Martín (AR)
Corresponding author
  • Nielsen, Morten
  • Marcatili, Paolo
Venue
Frontiers in Immunology
Published
2019-02-26
Volume
10
Pages
298-298
ISSN
1664-3224 (ISSN-L)
OpenAlex
W2917097596
Cited by
148
References
38
Citations by year
2026: 13 · 2025: 19 · 2024: 25 · 2023: 26 · 2022: 20 · 2021: 20 · 2020: 17 · 2019: 7
FWCI
5.30
Type
journal article
Language
en
Open access
Locations
  • Frontiers in Immunology (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
  • Technical University of Denmark, DTU Orbit (Technical University of Denmark, DTU) (submittedVersion, other-oa)
Funders
National Institutes of Health (HHSN272201200010C)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › vaccines and immunoinformatics approaches
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Monoclonal and Polyclonal Antibodies Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Machine Learning in Bioinformatics
Keywords
B-cell epitope prediction, antibody binding sites, immune complexes, physicochemical properties, geometric features, B cell receptor, antibody specificity, humoral immunity, machine learning prediction
MeSH terms
Protein Domains, Algorithms, Amino Acid Sequence, Animals, Antibodies, Antibody Specificity, Antigen-Antibody Complex, Binding Sites, Antibody, Humans, Models, Molecular, Monte Carlo Method, Reproducibility of Results, Neural Networks, Computer, Epitope Mapping, Epitopes, B-Lymphocyte

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