Intracellular delivery of core–shell fluorescent silica nanoparticles
2007; Elsevier BV; Volume: 29; Issue: 10 Linguagem: Inglês
10.1016/j.biomaterials.2007.11.025
ISSN1878-5905
AutoresJason Fuller, Gregory T. Zugates, Lino Ferreira, Hooisweng Ow, Nicholas N. Nguyen, Ulrich Wiesner, Róbert Langer,
Tópico(s)Supramolecular Self-Assembly in Materials
ResumoHighly fluorescent core-shell silica nanoparticles made by the modified Stöber process (C dots) are promising as tools for sensing and imaging subcellular agents and structures but will only be useful if they can be easily delivered to the cytoplasm of the subject cells. This work shows that C dots can be electrostatically coated with cationic polymers, changing their surface charge and enabling them to escape from endosomes and enter the cytoplasm and nucleus. As an example of cellular delivery, we demonstrate that these particles can also be complexed with DNA and mediate and trace DNA delivery and gene expression.
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