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Magnetic and Thermal-sensitive PolyN-isopropylacrylamide-based Microgels for Magnetically Triggered Controlled Release
Published on: July 4, 2017
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Temperature- and redox-responsive magnetic complex micelles for controlled drug release
1Institute of Nano and Bio-polymeric Materials, School of Materials Science and Engineering, Tongji University, 4800 Cao'an Road, Shanghai 201804, People's Republic of China. yuanwz@tongji.edu.cn.
Journal of Materials Chemistry. B
|April 9, 2020
Summary
Researchers developed novel magnetic complex micelles using a PCL-SS-PDMAEMA copolymer and Fe3O4 nanoparticles. These responsive micelles show potential for controlled drug delivery applications, responding to magnetic fields and chemical stimuli.
Area of Science:
- Polymer Chemistry
- Materials Science
- Nanotechnology
Background:
- Amphiphilic copolymers are crucial for self-assembly and drug delivery.
- Magnetic nanoparticles offer unique properties for targeted therapies.
- Stimuli-responsive materials enhance drug release control.
Purpose of the Study:
- To synthesize and characterize novel magnetic complex micelles.
- To investigate the stimuli-responsive behavior of the micelles.
- To evaluate their potential as drug delivery carriers.
Main Methods:
- Synthesis of PCL-SS-PDMAEMA copolymer via ROP and ATRP.
- Self-assembly of copolymer with oleic acid-modified Fe3O4 nanoparticles.
- Characterization of magnetic, magnetothermal, and responsive properties.
- Drug loading and in vitro release studies using Doxorubicin (DOX).
Main Results:
- Successfully prepared magnetic PCL-SS-PDMAEMA/Fe3O4 complex micelles.
- Micelles exhibited magnetothermal heating in an alternating magnetic field (AMF).
- Demonstrated temperature- and redox-responsive behavior, with tunable drug release.
- Achieved controlled release of Doxorubicin (DOX) influenced by AMF and DTT concentration.
Conclusions:
- The developed magnetic complex micelles possess excellent magnetic, magnetothermal, and stimuli-responsive properties.
- These micelles serve as effective carriers for controlled drug delivery.
- Tunable release profiles make them promising for advanced therapeutic applications.
