Cited by 71Parasites and Host InteractionsHelminth infection and controlParasitic Diseases Research and Treatment

Secretion of protective antigens by tissue-stage nematode larvae revealed by proteomic analysis and vaccination-induced sterile immunity

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Hewitson, James P., Ivens, Al C., Harcus, Yvonne, Filbey, Kara J., McSorley, Henry J., Murray, Janice, Bridgett, Stephen, Ashford, David +2 more·2013·PLoS Pathogens

Abstract

Gastrointestinal nematode parasites infect over 1 billion humans, with little evidence for generation of sterilising immunity. These helminths are highly adapted to their mammalian host, following a developmental program through successive niches, while effectively down-modulating host immune responsiveness. Larvae of Heligmosomoides polygyrus, for example, encyst in the intestinal submucosa, before emerging as adult worms into the duodenal lumen. Adults release immunomodulatory excretory-secretory (ES) products, but mice immunised with adult H. polygyrus ES become fully immune to challenge infection. ES products of the intestinal wall 4th stage (L4) larvae are similarly important in host-parasite interactions, as they readily generate sterile immunity against infection, while released material from the egg stage is ineffective. Proteomic analyses of L4 ES identifies protective antigen targets as well as potential tissue-phase immunomodulatory molecules, using as comparators the adult ES proteome and a profile of H. polygyrus egg-released material. While 135 proteins are shared between L4 and adult ES, 72 are L4 ES-specific; L4-specific proteins correspond to those whose transcription is restricted to larval stages, while shared proteins are generally transcribed by all life cycle forms. Two protein families are more heavily represented in the L4 secretome, the Sushi domain, associated with complement regulation, and the ShK/SXC domain related to a toxin interfering with T cell signalling. Both adult and L4 ES contain extensive but distinct arrays of Venom allergen/Ancylostoma secreted protein-Like (VAL) members, with acetylcholinesterases (ACEs) and apyrase APY-3 particularly abundant in L4 ES. Serum antibodies from mice vaccinated with L4 and adult ES react strongly to the VAL-1 protein and to ACE-1, indicating that these two antigens represent major vaccine targets for this intestinal nematode. We have thus defined an extensive and novel repertoire of H. polygyrus proteins closely implicated in immune modulation and protective immunity.

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Crossref · 10.1371/journal.ppat.1003492

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  • In H. polygyrus, secretion products differ markedly between immature tissue-dwelling larvae and intestinal lumen-dwelling adults.

    “Certainly, in species such as H. polygyrus, secretion products differ markedly between immature tissue-dwelling larvae and the intestinal lumen-dwelling adults (Hewitson et al., 2013), arguing for developmental adaptability for interaction with the immune system.”

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  1. [15]Smith KA, Hochweller K, Hämmerling GJ, Boon L, Macdonald AS, et al (2011) Chronic helminth infection mediates tolerance in vivo through dominance of CD11clo CD103− DC population. J Immunol 186: 7098– 7109. 21576507 PMC4794626

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Authors
Hewitson, J. P., Ivens, A. C., Harcus, Y., Filbey, K. J., McSorley, H. J., Murray, J., Bridgett, S., Ashford, D., Dowle, A. A., & Maizels, R. M.
Affiliations
  • University of Edinburgh (GB)
  • University of York (GB)
Corresponding author
Maizels, Rick M.
Venue
PLoS Pathogens
Published
2013-08-15
Volume
9
Issue
8
Pages
e1003492
ISSN
  • 1553-7366 (ISSN-L)
  • 1553-7374
OpenAlex
W2084904547
Cited by
71
References
69
Citations by year
2026: 6 · 2025: 9 · 2024: 2 · 2023: 4 · 2022: 2 · 2021: 10 · 2020: 6 · 2019: 1 · 2018: 6 · 2017: 4 · 2016: 3 · 2015: 8 · 2014: 10
FWCI
5.95
Type
journal article
Language
en
Open access
Locations
  • PLoS Pathogens (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Research Explorer (The University of Manchester) (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Figshare (submittedVersion, cc-by)
  • Edinburgh Research Explorer (University of Edinburgh) (submittedVersion, other-oa)
  • Research Portal (Queen's University Belfast) (submittedVersion)
Funders
  • Wellcome Trust (090281, 095831)
  • Medical Research Council (MR/K001744/1)
  • UCB Celltech
Topics
  • Life Sciences › Immunology and Microbiology › Parasitology › Parasites and Host Interactions
  • Health Sciences › Veterinary › Small Animals › Helminth infection and control
  • Health Sciences › Medicine › Infectious Diseases › Parasitic Diseases Research and Treatment
Keywords
Heligmosomoides polygyrus, fourth-stage larvae, excretory-secretory products, sterile immunity, vaccine targets, acetylcholinesterase, immunomodulation, host-parasite interactions, intestinal nematodes
MeSH terms
Animals, Antibodies, Helminth, Antigens, Helminth, Chromatography, Liquid, Enzyme-Linked Immunosorbent Assay, Female, Host-Parasite Interactions, Immunization, Larva, Mice, Inbred CBA, Mice, Inbred C57BL, Nematode Infections, Nematospiroides dubius, Vaccination, Blotting, Western, Electrophoresis, Gel, Two-Dimensional, Helminth Proteins, Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization, Computational Biology, Gene Expression Profiling, Proteomics, Immunoprecipitation, Mice

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