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Abstract
We have reviewed the information about epitopes of immunological interest from Clostridium botulinum and Bacillus anthracis, by mining the Immune Epitope Database and Analysis Resource. For both pathogens, the vast majority of epitopes reported to date are derived from a single protein: the protective antigen of B. anthracis and the neurotoxin type A of C. botulinum. A detailed analysis of the data was performed to characterize the function, localization and conservancy of epitopes identified as neutralizing and/or protective. In order to broaden the scope of this analysis, we have also included data describing immune responses against defined fragments (over 50 amino acids long) of the relevant antigens. The scarce information on T-cell determinants and on epitopes from other antigens besides the toxins, highlights a gap in our knowledge and identifies areas for future research. Despite this, several distinct structures at the epitope and fragment level are described herein, which could be potential additions to future vaccines or targets of novel immunotherapeutics and diagnostic reagents.
Acknowledgments
We thank the Immune Epitope Database and Analysis Resource curation team for their excellent work in curating the cited epitope information and Alison Deckhut Augustine for helpful suggestions and a critical review of the manuscript.
Financial & competing interests disclosure
This work was supported by the US NIH National Institute of Allergy and Infectious Disease Contract HHSN26620040006C (Immune Epitope Database and Analysis Program). Arturo Casadevall is supported, in part, by grant 5U54AI057158-05. The authors have no other relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript apart from those disclosed.
No writing assistance was utilized in the production of this manuscript.