Parasite-host glycan interactions during Trypanosoma cruzi infection: trans-Sialidase rides the show.
Biochim Biophys Acta Mol Basis Dis
; 1866(5): 165692, 2020 05 01.
Article
em En
| MEDLINE
| ID: mdl-31972227
ABSTRACT
Many important pathogen-host interactions rely on highly specific carbohydrate binding events. In the case of the protozoan Trypanosoma cruzi, the causative agent of Chagas disease, glycointeractions involving sialic acid (SA) residues are pivotal for parasite infectivity, escape from immune surveillance and pathogenesis. Though unable to synthesize SA de novo, T. cruzi displays a unique trans-Sialidase (TS) enzyme, which is able to cleave terminal SA residues from host donor glycoconjugates and transfer them onto parasite surface mucins, thus generating protective/adhesive structures. In addition, this parasite sheds TS into the bloodstream, as a way of modifying the surface SA signature, and thereby the signaling/functional properties of mammalian host target cells on its own advantage. Here, we discuss the pathogenic aspects of T. cruzi TS its molecular adaptations, the multiplicity of interactions in which it is involved during infections, and the array of novel and appealing targets for intervention in Chagas disease provided by TS-remodeled sialoglycophenotypes.
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Base de dados:
MEDLINE
Assunto principal:
Polissacarídeos
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Trypanosoma cruzi
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Glicoproteínas
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Proteínas de Protozoários
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Doença de Chagas
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Interações Hospedeiro-Parasita
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Neuraminidase
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article