Visible light—responsive drug delivery nanoparticle via donor–acceptor stenhouse adducts (DASA)
Open accessAbstract
Stimuli-responsive drug release from a nanocarrier triggered by light enables the control of the amount of drug locally. Here, block copolymer micelles based on poly(ethylene glycol) methyl ether methacrylate (PEGMEMA) as the hydrophilic block and a polymer with pendant donor-acceptor Stenhouse adducts (DASA) are used as a means to trigger the release of drugs under green light. The micelles are loaded with ellipticine to yield light-responsive nanoparticles with sizes of around 35 nm according to transmission electron microscopy (TEM) analysis. Two micelles with a drug loading content of 4.75 and 7.4 wt% are prepared, but the micelle with the higher drug loading content leads to substantial protein adsorption. The release of ellipticine from the micelle, which is monitored using the polarity-sensitive fluorescence of ellipticine, can be switched on by light and off by thermal recovery of DASA in the dark. The micelles are readily taken up by Michigan Cancer Foundation-7 breast cancer cells. Subsequent light irradiation leads to enhanced drug release inside the cell as seen by the enhanced fluorescence.
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This approach, combined with adequate mathematical models, can be used to predict the actual release kinetic from micelles.
“This approach, combined with adequate mathematical models, can be used to predict the actual release kinetic from micelles [117,122].”
From Polymeric micelles in drug delivery: An insight of the techniques for their characterization and assessment in biorelevant conditions (2021) · cites this paper as [122]
In the drug-release discussion (page not available), the paper describes using changes in ellipticine’s absorbance to monitor release from micelles and says the curves need deconvolution for quantitative analysis. It does not describe combining this approach with mathematical models to predict release kinetics. (LLM, conf=0.84)
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Cited by
Sorted by citations
Ghezzi, M., Pescina, S., Padula, C., Santi, P., Del Favero, E., Cantù, L., & Nicoli, S. (2021) · Journal of Controlled Release · doi:10.1016/j.jconrel.2021.02.031 · Cited by 1,135 · see citing works
Photo-Responsive Polymersomes as Drug Delivery System for Potential Medical Applications
Hou, W., Liu, R., Bi, S., He, Q., Wang, H., & Gu, J. (2020) · Molecules · doi:10.3390/molecules25215147 · Cited by 46 · see citing works
- Authors
- Yap, J. E., Zhang, L., Lovegrove, J. T., Beves, J. E., & Stenzel, M. H.
- Affiliations
- UNSW Sydney (AU)
- Corresponding author
- Stenzel, Martina H.
- Venue
- Macromolecular Rapid Communications
- Publisher
- Wiley
- Published
- 2020-08-09
- Volume
- 41
- Issue
- 21
- Pages
- e2000236-e2000236
- ISSN
- 1022-1336 (ISSN-L)
- 1521-3927
- OpenAlex
- W3047728651
- Cited by
- 60
- References
- 48
- Citations by year
- 2026: 6 · 2025: 4 · 2024: 6 · 2023: 14 · 2022: 19 · 2021: 10 · 2020: 1
- FWCI
- 2.86
- Type
- journal article
- Language
- en
- Open access
- green
- hdl.handle.net
- Licence
- Locations
- Macromolecular Rapid Communications (publishedVersion)
- PubMed (publishedVersion)
- UNSWorks (University of New South Wales, Sydney, Australia) (submittedVersion, cc-by-nc-nd)
- Funders
- Australian Research Council (DP160101172)
- Topics
- Physical Sciences › Materials Science › Biomaterials › Nanoparticle-Based Drug Delivery
- Physical Sciences › Engineering › Biomedical Engineering › Nanoplatforms for cancer theranostics
- Physical Sciences › Chemistry › Organic Chemistry › Advanced Polymer Synthesis and Characterization
- Keywords
- DASA, block copolymer micelles, ellipticine, stimuli-responsive drug release, protein adsorption, breast cancer cells, intracellular drug release, fluorescence imaging
- MeSH terms
- Drug Carriers, Light, Micelles, Polyethylene Glycols, Polymers, Nanoparticles, Drug Liberation
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