http://www.cnr.it/ontology/cnr/individuo/prodotto/ID290510
Factors affecting T cell responses induced by fully synthetic glyco-gold-nanoparticles (Articolo in rivista)
- Type
- Label
- Factors affecting T cell responses induced by fully synthetic glyco-gold-nanoparticles (Articolo in rivista) (literal)
- Anno
- 2013-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1039/c2nr32338a (literal)
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- Fallarini S.; Paoletti T.; Battaglini C.O.; Ronchi P.; Lay L.; Bonomi R.; Jha S.; Mancin F.; Scrimin P.; Lombardi G. (literal)
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- Department of Pharmaceutical Sciences, University of Piemonte Orientale Amedeo Avogadro, Via Bovio 6, 28100 Novara, Italy; Department of Organic and Industrial Chemistry, CISI, University of Milano, Via Venezian 21, 20133 Milan, Italy; Department of Chemical Sciences, ITM-CNR, University of Padova, Via Marzolo 1, 35131 Padova, Italy (literal)
- Titolo
- Factors affecting T cell responses induced by fully synthetic glyco-gold-nanoparticles (literal)
- Abstract
- We have synthesized and characterized nearly monodisperse and highly pure gold nanoparticles (2 and 5 nm) coated with non-immunoactive mono- and disaccharides, modelled after the capsular polysaccharide of serogroup A of the Neisseria meningitidis bacterium. We have used them to test their ability to induce immune cell responses as a consequence of their multivalency. The results indicate that they are indeed immunoactive and that immunoactivity is strongly dependent on size, and larger, 5 nm nanoparticles perform far better than smaller, 2 nm ones. Immune response (activation of macrophages) initiates with the whole nanoparticle recognition by the surface of antigen-presenting cells, independent of the saccharide oligomerization (or charge) on the nanoparticle surface. The induction of T cell proliferation and the increase of IL-2 levels, a consequence of the expression of MHC II involved in antigen presentation, require the presence of a disaccharide on the nanoparticle, not just a monosaccharide. A possible explanation is that, at this stage, the saccharides are detached from the gold surface. These results may provide leads for designing new saccharide-based, nanoparticle-conjugate vaccines. © 2013 The Royal Society of Chemistry. (literal)
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