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Selective Release System for Antioxidative and Anti-Inflammatory Activities Using H2O2-Responsive Therapeutic
A Y Kim1, Ji H Ha1, Soo N Park1
1Cosmetic R&D Center, Department of Fine Chemistry, Cosmetic Industry Coupled Collaboration Center, Seoul National University of Science and Technology , 232 Gongneungro, Nowon-gu, Seoul 01811, Republic of Korea.
Biomacromolecules
|August 15, 2017
Summary
New nanoparticles degrade in response to hydrogen peroxide (H2O2), a reactive oxygen species (ROS), to deliver drugs specifically to damaged skin cells. This targeted drug delivery system shows promise for treating inflammatory skin diseases.
Area of Science:
- Biomaterials Science
- Nanotechnology
- Dermatology
Background:
- Oxidative stress and inflammation are key factors in various skin diseases.
- Current drug delivery systems often lack specificity, leading to off-target effects.
- Targeted delivery of antioxidants and anti-inflammatories to damaged skin cells is a significant therapeutic goal.
Purpose of the Study:
- To develop and characterize novel hydrogen peroxide (H2O2)-responsive nanoparticles for targeted drug delivery.
- To evaluate the drug release kinetics and cellular uptake of these nanoparticles in oxidative and inflammatory conditions.
- To assess the therapeutic potential of quercetin-loaded nanoparticles for treating oxidative and inflammatory skin damage.
Main Methods:
- Synthesis of tyrosol-incorporated copolyoxalate (TPOX) nanoparticles.
- In vitro drug release studies using nile red as a model drug, assessing H2O2 concentration and pH dependency.
- Evaluation of quercetin-loaded TPOX (QTPOX) nanoparticles' cytoprotective effects on HaCaT and RAW 264.7 cells.
- Assessment of QTPOX's anti-inflammatory effects by measuring inhibition of iNOS, COX-2, IL-1, TNF-α, and NO production.
Main Results:
- TPOX nanoparticles demonstrated H2O2-dependent, pH-independent drug release, selectively releasing entrapped drugs in oxidative environments.
- QTPOX nanoparticles exhibited significant cytoprotective effects against H2O2-induced cell damage.
- QTPOX nanoparticles effectively inhibited key inflammatory mediators (iNOS, COX-2, IL-1, TNF-α, NO) in LPS-induced inflammation models.
Conclusions:
- H2O2-responsive QTPOX nanoparticles offer a potent and versatile drug delivery system for skin diseases.
- The selective and intensive drug release mechanism targets damaged cells, providing antioxidant and anti-inflammatory benefits.
- QTPOX nanoparticles show significant therapeutic potential for treating abnormal and inflammatory skin conditions.
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