Sulfated xylomannans from the red seaweed Sebdenia polydactyla: Structural features, chemical modification and antiviral activity
Background: Many viruses display affinity for cell surface heparan sulfate proteoglycans with biological relevance in virus entry. This raises the possibility of the application of sulfated polysaccharides in antiviral therapy. Methods: In this study, we analysed polysaccharide fractions isolated fr...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2009 |
| País: | Argentina |
| Institución: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositorio: | CONICET Digital (CONICET) |
| Idioma: | inglés |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/71275 |
| Acceso en línea: | http://hdl.handle.net/11336/71275 |
| Access Level: | acceso abierto |
| Palabra clave: | Sulfated xylomannans Sebdenia polydactyla Chemical modification Antiviral activity https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
| Sumario: | Background: Many viruses display affinity for cell surface heparan sulfate proteoglycans with biological relevance in virus entry. This raises the possibility of the application of sulfated polysaccharides in antiviral therapy. Methods: In this study, we analysed polysaccharide fractions isolated from Sebdenia polydactyla. Results: The purified xylomannan sulfate and its further sulfated derivatives showed strong activity against herpes simplex virus type-1 (HSV-1). Their 50% inhibitory concentration values were in the range 0.35-2.8 μg/ ml and they lacked cytotoxicity at concentrations up to 1,000 μg/ml. The major polysaccharide, which had 0.6 sulfate groups per monomer unit and an apparent molecular mass of 150 kDa, contained a backbone of α-(1→3)- linked D-mannopyranosyl residues substituted at position 6 with a single stub of β-d-xylopyranosyl residues. Conclusions: The degree of sulfation seemed to play an important role because desulfation and/or further sulfation of the isolated macromolecules largely influenced their in vitro anti-HSV-1 activity. ©2009 International Medical Press. |
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