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dc.contributor.authorLima, PC
dc.contributor.authorHartley-Tassell, L
dc.contributor.authorCooper, O
dc.contributor.authorWynne, JW
dc.date.accessioned2021-03-15T03:59:33Z
dc.date.available2021-03-15T03:59:33Z
dc.date.issued2021
dc.identifier.issn0020-7519
dc.identifier.doi10.1016/j.ijpara.2020.11.009
dc.identifier.urihttp://hdl.handle.net/10072/403155
dc.description.abstractOne of the first critical steps in the pathogenesis of amoebic gill disease (AGD) of farmed salmon is the adhesion of the causative amoeba to the host. The current study aimed to investigate the potential involvement of glycan-binding proteins expressed on the extracellular surface of Neoparamoeba perurans in gill tissue recognition and binding. The glycan-binding properties of the surface membrane of N. perurans and the carbohydrate binding profile of Atlantic salmon gill-derived epithelial cells were identified through the use of glycan and lectin microarrays, respectively. The occurrence of specific carbohydrate-mediated binding was then further assessed by in vitro attachment assays using microtitre plates pre-coated with the main glycan candidates. Adhesion assays were also performed in the presence of exogenous saccharides with the aim of blocking glycan-specific binding activity. Comparative analysis of the results from both lectin and glycan arrays showed significant overlap, as some glycans to which binding by the amoeba was seen were reflected as being present on the gill epithelial cells. The two main candidates proposed to be involved in amoeba attachment to the gills are mannobiose and N-acetylgalactosamine (GalNAc). Adhesion of amoebae significantly increased by 33.5 and 23% when cells were added to α1,3-Mannobiose-BSA and GalNAc-BSA coated plates. The observed increased in attachment was significantly reduced when the amoebae were incubated with exogenous glycans, further demonstrating the presence of mannobiose- and GalNAc-binding sites on the surfaces of the cells. We believe this study provides the first evidence for the presence of a highly specific carbohydrate recognition and binding system in N. perurans. These preliminary findings could be of extreme importance given that AGD is an external parasitic infestation and much of the current research on the development of alternative treatment strategies relies on either instant amoeba detachment or blocking parasite attachment.
dc.description.peerreviewedYes
dc.languageeng
dc.publisherElsevier BV
dc.relation.ispartofjournalInternational Journal for Parasitology
dc.subject.fieldofresearchMicrobiology
dc.subject.fieldofresearchZoology
dc.subject.fieldofresearchVeterinary Sciences
dc.subject.fieldofresearchcode0605
dc.subject.fieldofresearchcode0608
dc.subject.fieldofresearchcode0707
dc.subject.keywordsAGD
dc.subject.keywordsAmoeba
dc.subject.keywordsAttachment
dc.subject.keywordsGlycans
dc.subject.keywordsMannobiose
dc.titleSearching for the sweet spot of amoebic gill disease of farmed Atlantic salmon: the potential role of glycan-lectin interactions in the adhesion of Neoparamoeba perurans
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationLima, PC; Hartley-Tassell, L; Cooper, O; Wynne, JW, Searching for the sweet spot of amoebic gill disease of farmed Atlantic salmon: the potential role of glycan-lectin interactions in the adhesion of Neoparamoeba perurans, International Journal for Parasitology, 2021
dcterms.dateAccepted2020-11-15
dcterms.licensehttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.date.updated2021-03-14T22:26:38Z
dc.description.versionVersion of Record (VoR)
gro.description.notepublicThis publication has been entered in Griffith Research Online as an advanced online version.
gro.rights.copyright© 2021 Australian Society for Parasitology Inc. Published by Elsevier Ltd. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence (http://creativecommons.org/licenses/by-nc-nd/4.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, providing that the work is properly cited.
gro.hasfulltextFull Text
gro.griffith.authorCooper, Oren
gro.griffith.authorHartley-Tassell, Lauren E.


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