Journal
PHARMACEUTICS
Volume 14, Issue 12, Pages -Publisher
MDPI
DOI: 10.3390/pharmaceutics14122576
Keywords
polymeric nanoparticles; hydrophobicity; curcumin; cancer cells; structure-property-relationship
Categories
Funding
- Slovak Research and Development Agency
- Slovak Grant Agency [VEGA 1/0156/18, VEGA 1/0602/19, VEGA 2/0042/21, VEGA 2/0172/21, APVV-15-0485, APVV-20-0202, ITMS2014+: 313011V455]
- Operational Programme Integrated Infrastructure, the project Building-up Centre for advanced materials application of the Slovak Academy of Sciences
- project Building-up Centre for advanced materials application of the Slovak Academy of Sciences
- ITMS project code - Research & Innovation Operational Programme [313021T081]
- ERDF
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Due to their simple preparation method and potential applications in biomedical research, amphiphilic gradient copoly(2-oxazoline)s have attracted increasing interest. This study investigated the solubilization ability of a series of these copolymers with different length of hydrophobic side-chains for curcumin. The results showed that the length of hydrophobic side-chain played a crucial role in curcumin loading onto the self-assembled nanoparticles. The kinetic stability of the nanoparticles was studied using FRET and a correlation between their integrity and cellular uptake was observed in human glioblastoma cells.
Due to the simple one-step preparation method and a promising application in biomedical research, amphiphilic gradient copoly(2-oxazoline)s are gaining more and more interest compared to their analogous block copolymers. In this work, the curcumin solubilization ability was tested for a series of amphiphilic gradient copoly(2-oxazoline)s with different lengths of hydrophobic side-chains, consisting of 2-ethyl-2-oxazoline as a hydrophilic monomer and 2-(4-alkyloxyphenyl)-2-oxazoline as a hydrophobic monomer. It is shown that the length of the hydrophobic side-chain in the copolymers plays a crucial role in the loading of curcumin onto the self-assembled nanoparticles. The kinetic stability of self-assembled nanoparticles studied using FRET shows a link between their integrity and cellular uptake in human glioblastoma cells. The present study demonstrates how minor changes in the molecular structure of gradient copoly(2-oxazoline)s can lead to significant differences in the loading, stability, cytotoxicity, cellular uptake, and pharmacokinetics of nano-formulations containing curcumin. The obtained results on the behavior of the complex of gradient copoly(2-oxazoline)s and curcumin may contribute to the development of effective next-generation polymeric nanostructures for biomedical applications.
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