Journal
BIOCONJUGATE CHEMISTRY
Volume 23, Issue 5, Pages 1059-1068Publisher
AMER CHEMICAL SOC
DOI: 10.1021/bc300079h
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Funding
- Spanish MICINN [CTQ2009-10963, CTQ2009-14146-C02-02]
- Xunta de Galicia [10CSA209021PR, CN2011/037]
- Spanish Ministry of Education
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GATG (gallic acid-triethylene glycol) dendrimers represent appealing nanostructures for biomedical applications. The incorporation of specific ligands and targeting and imaging agents on their surface has resulted in promising tools in diagnosis and drug delivery. With the aim to further explore the versatility of GATG dendrimers in the biomedical field, in this work we study the effect of peripheral substitution on their uptake and intracellular trafficking in living cells. To this end, peripheral groups with different physicochemical properties and biological relevance have been installed on the surface of GATG dendrimers, and their interactions, uptake efficacy, and specificity for certain cell populations studied by confocal microscopy. Finally, this information was used to design a pH-sensitive drug delivery system for the selective release of cargo molecules inside cells after lysosomal localization. These results along with the easy functionalization and modular architecture of GATG dendrimers reveal these systems as promising nanotools in biomedicine.
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