Label-free quantitative proteomics and immunoblotting identifies immunoreactive and other excretory-secretory (E/S) proteins of Anoplocephala perfoliata

Katja Hautala, Jami Pursiainen, Anu Näreaho, Tuula Nyman, Pekka Varmanen, Antti Sukura, Martin K. Nielsen, Kirsi Savijoki

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1 Scopus citations


Anoplocephala perfoliata is a common tapeworm in horses causing colic and even mortalities. Current diagnostic tests to detect A. perfoliata infections have their limitations and an improved method is needed. Immunoreactive excretory/secretory proteins (E/S proteome) of this parasite can provide promising candidates for diagnostic tests. We compared E/S proteins produced by small (length < 20 mm, width < 5 mm) and large (length 20 to 40 mm, width 5 to 10 mm) A. perfoliata worms in vitro by label-free quantitative proteomics using a database composed of related Hymenolepis diminuta, Echinococcus multilocularis/granulosus and Taenia aseatica proteins for protein identifications. Altogether, 509 E/S proteins were identified after incubating the worms in vitro for three and eight hours. The greatest E/S proteome changes suggested both worm size- and time-dependent changes in cytoskeleton remodeling, apoptosis, and production of antigens/immunogens. The E/S proteins collected at the three-hour time point represented the natural conditions better than those collected at the eight-hour time point, and thereby contained the most relevant diagnostic targets. Immunoblotting using antibodies from horses tested positive/negative for A. perfoliata indicated strongest antigenicity/immunogenicity with 13-, 30- and 100-kDa proteins, involving a thioredoxin, heat-shock chaperone 90 (Hsp90), dynein light chain component (DYNLL), tubulin-specific chaperone A (TBCA) and signaling pathway modulators (14-3-3 and Sj-Ts4). This is among the first studies identifying new diagnostic targets and A. perfoliata antigens eliciting a IgG-response in horses.

Original languageEnglish
Article number1045468
JournalFrontiers in Immunology
StatePublished - Nov 16 2022

Bibliographical note

Funding Information:
This study was partly supported by grants provided by the Marjatta and Eino Kolli Foundation, Orion Pharma Foundation, Finnish Veterinary Foundation and Finnish Foundation of Veterinary Research. Mass spectrometry-based proteomic analyses were performed by the Proteomics Core Facility, Department of Immunology, University of Oslo/Oslo University Hospital, which is supported by the Core Facilities program of the South-Eastern Norway Regional Health Authority. This core facility is also a member of the National Network of Advanced Proteomics Infrastructure (NAPI), which is funded by the Research Council of Norway INFRASTRUKTUR-program (project number: 295910).

Publisher Copyright:
Copyright © 2022 Hautala, Pursiainen, Näreaho, Nyman, Varmanen, Sukura, Nielsen and Savijoki.


  • E/S proteins
  • LFQ-proteomics
  • antigen
  • cestode
  • horse
  • immunogen
  • immunoproteomics
  • tapeworm

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology


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