Please use this identifier to cite or link to this item: http://sgc.anlis.gob.ar/handle/123456789/1430
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dc.contributor.authorFerrero, Maximiliano Res
dc.contributor.authorHeins, Anja Mes
dc.contributor.authorSoprano, Luciana Les
dc.contributor.authorAcosta, Diana Mes
dc.contributor.authorEsteva, Monica Ies
dc.contributor.authorJacobs, Thomases
dc.contributor.authorDuschak, Vilma Ges
dc.date.accessioned2019-12-04T19:05:30Z-
dc.date.available2019-12-04T19:05:30Z-
dc.date.issued2016-02-
dc.identifier.issn1432-1831-
dc.identifier.urihttp://sgc.anlis.gob.ar/handle/123456789/1430-
dc.descriptionFil: Ferrero, Maximiliano R. ANLIS Dr.C.G.Malbrán. Instituto Nacional de Parasitología. Departamento de Investigación y Docencia; Argentina.es
dc.descriptionFil: Heins, Anja M. Bernhard Nocht Institute for Tropical Medicine, Hamburgo; Alemania.es
dc.descriptionFil: Soprano, Luciana L. ANLIS Dr.C.G.Malbrán. Instituto Nacional de Parasitología. Departamento de Investigación y Docencia; Argentina.es
dc.descriptionFil: Acosta, Diana M. ANLIS Dr.C.G.Malbrán. Instituto Nacional de Parasitología. Departamento de Investigación y Docencia; Argentina.es
dc.descriptionFil: Esteva, Monica I. ANLIS Dr.C.G.Malbrán. Instituto Nacional de Parasitología. Departamento de Investigación y Docencia; Argentina.es
dc.descriptionFil: Jacobs, Thomas. Bernhard Nocht Institute for Tropical Medicine, Hamburgo; Alemania.es
dc.descriptionFil: Duschak, Vilma G. ANLIS Dr.C.G.Malbrán. Instituto Nacional de Parasitología. Departamento de Investigación y Docencia; Argentina.es
dc.description.abstractIn order to investigate the involvement of sulfated groups in the Trypanosoma cruzi host-parasite relationship, we studied the interaction between the major cysteine proteinase of T. cruzi, cruzipain (Cz), a sulfate-containing sialylated molecule and the sialic acid-binding immunoglobulin like lectin-E (Siglec-E). To this aim, ELISA, indirect immunofluorescence assays and flow cytometry, using mouse Siglec-E-Fc fusion molecules and glycoproteins of parasites, were performed. Competition assays verified that the lectins, Maackia amurensis II (Mal II) and Siglec-E-Fc, compete for the same binding sites. Taking into account that Mal II binding remains unaltered by sulfation, we established this lectin as sialylation degree control. Proteins of an enriched microsomal fraction showed the highest binding to Siglec-E as compared with those from the other parasite subcellular fractions. ELISA assays and the affinity purification of Cz by a Siglec-E column confirmed the interaction between both molecules. The significant decrease in binding of Siglec-E-Fc to Cz and to its C-terminal domain (C-T) after desulfation of these molecules suggests that sulfates contribute to the interaction between Siglec-E-Fc and these glycoproteins. Competitive ELISA assays confirmed the involvement of sulfated epitopes in the affinity between Siglec-E and Cz, probably modified by natural protein environment. Interestingly, data from flow cytometry of untreated and chlorate-treated parasites suggested that sulfates are not primary receptors, but enhance the binding of Siglec-E to trypomastigotic forms. Altogether, our findings support the notion that sulfate-containing sialylated glycoproteins interact with Siglec-E, an ortholog protein of human Siglec-9, and might modulate the immune response of the host, favoring parasitemia and persistence of the parasite.es
dc.formatpdf-
dc.language.isoenes
dc.relation.ispartofMedical microbiology and immunologyes
dc.rightsOpen Access-
dc.rightsCreative Commons Attribution 4.0 International License-
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/-
dc.sourceMedical Microbiology and Immunology 2016:205(1):21-35-
dc.subjectTrypanosoma cruzies
dc.subjectInmunomodulaciónes
dc.subjectÁcido N-Acetilneuramínicoes
dc.subjectLectinas Similares a la Inmunoglobulina de Unión a Ácido Siálicoes
dc.subjectSulfatoses
dc.titleInvolvement of sulfates from cruzipain, a major antigen of Trypanosoma cruzi, in the interaction with immunomodulatory molecule Siglec-Ees
dc.typeArtículoes
dc.identifier.doi10.1007/s00430-015-0421-2-
anlis.essnrd1-
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item.languageiso639-1en-
item.cerifentitytypePublications-
item.grantfulltextopen-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
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