Journal
ACS NANO
Volume 3, Issue 11, Pages 3552-3559Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn9010973
Keywords
biodegradable nanoparticles; drug delivery systems; cells; Raman imaging
Categories
Funding
- NSF [0504331]
- [CA 090346]
- Division Of Graduate Education
- Direct For Education and Human Resources [0504331] Funding Source: National Science Foundation
Ask authors/readers for more resources
Novel optical imaging methods, such as Raman microspectroscopy, have been gaining recognition in their ability to obtain noninvasively the distribution of biochemical components of a sample. Raman spectroscopy in combination with optical microscopy provides a label-free method to assess and image cellular processes, without the use of extrinsic fluorescent dyes. The submicrometer resolution of the confocal Raman instrumentation allows us to image cellular organelles on the scale of conventional microscopy. We used the technique to monitor subcellular degradation patterns of two biodegradable nanocarrier systems-poly(E-caprolactone) (PCL) and poly(lactic-co-glycolic acid) (PLGA). Our results suggest that both drug-delivery systems eventually are incorporated into Golgi-associated vesicles of late endosomes. These processes were monitored via the decrease of the molecule-characteristic peaks of PCL and PLGA. As the catabolic pathways proceed, shifts and variations in peak intensities and intensity ratios in the rendered Raman spectra unequivocally delineate their degradation patterns.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available