Peptidomics of Haemonchus contortus

Armelle Buzy, Camille Allain, John Harrington, Dominique Lesuisse, Vincent Mikol, David F. Bruhn, Aaron G. Maule, Jean-Claude Guillemot

Research output: Contribution to journalArticlepeer-review

Abstract

The nematode Haemonchus contortus (the barber’s pole worm) is an endoparasite infecting wild and domesticated ruminants worldwide. Widespread anthelmintic resistance of H. contortus requires alternative strategies to control this parasite. Neuropeptide signaling represents a promising target for anthelmintic drugs. Identification and relative quantification of nematode neuropeptides are, therefore, required for the development of such therapeutic targets. In this work, we undertook the profiling of the whole H. contortus larvae at different stages for the direct sequencing of the neuropeptides expressed at low levels in these tissues. We set out a peptide extraction protocol and a peptidomic workflow to biochemically characterize bioactive peptides from both first-stage (L1) and third-stage larvae (L3) of H. contortus. This work led to the identification and quantification at the peptidomic level of more than 180 mature neuropeptides, including amidated and nonamidated peptides, arising from 55 precursors of H. contortus. The differential peptidomic approach provided evidence that both life stages express most FMRFamide-like peptides (FLPs) and neuropeptide-like proteins (NLPs). The H. contortus peptidome resource, established in this work, could add the discovery of neuropeptide system-targeting drugs for ruminants.
Original languageEnglish
Pages (from-to)10288-10305
Number of pages18
JournalACS Omega
Volume6
Issue number15
Early online date07 Apr 2021
DOIs
Publication statusPublished - 20 Apr 2021

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