Abstract
The potential of poly(lactic-co-glycolic acid) (PLGA) to design nanoparticles (NPs) and target the central nervous system remains to be exploited. In the current study we designed fluorescent 70-nm PLGA NPs, loaded with bulky fluorophores, thereby making them significantly brighter than quantum dots in single-particle fluorescence measurements. The high brightness of NPs enabled their visualization by intravital real-time 2-photon microscopy. Subsequently, we found that PLGA NPs coated with pluronic F-68 circulated in the blood substantially longer than uncoated NPs and were taken up by cerebro-vascular endothelial cells. Additionally, confocal microscopy revealed that coated PLGA NPs were present in late endothelial endosomes of cerebral vessels within 1 h after systemic injection and were more readily taken up by endothelial cells in peripheral organs. The combination of ultra-bright NPs and in vivo imaging may thus represent a promising approach to reduce the gap between development and clinical application of nanoparticle-based drug carriers.(c) 2021 Elsevier Inc. All rights reserved.
Item Type: | Journal article |
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Faculties: | Medicine Medicine > Munich Cluster for Systems Neurology (SyNergy) |
Subjects: | 600 Technology > 610 Medicine and health |
ISSN: | 1549-9634 |
Language: | English |
Item ID: | 115149 |
Date Deposited: | 02. Apr 2024, 08:10 |
Last Modified: | 24. Apr 2024, 11:12 |
DFG: | Gefördert durch die Deutsche Forschungsgemeinschaft (DFG) - 390857198 |