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Preparation and Characterization of Individual and Multi-drug Loaded Physically Entrapped Polymeric Micelles
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Dual-Stimuli Responsive Polymeric Micelles for the Effective Treatment of Rheumatoid Arthritis
Liming He1, Xianyan Qin1, Donghao Fan1
1Key Laboratory of Advanced Technologies of Materials, Ministry of Education and School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
ACS Applied Materials & Interfaces
|April 29, 2021
Summary
Researchers developed dual-stimuli responsive polymeric micelles for targeted rheumatoid arthritis (RA) treatment. These micelles deliver dexamethasone (Dex) to inflamed joints and release it on demand, improving therapeutic efficacy.
Area of Science:
- Biomaterials Science
- Drug Delivery
- Rheumatology
Background:
- Nontargeted drug distribution and uncontrolled release limit the efficacy of rheumatoid arthritis (RA) treatments.
- Targeted delivery to arthritic joints and on-demand drug release offer a promising strategy for effective RA therapy.
Purpose of the Study:
- To develop dual-stimuli responsive polymeric micelles for targeted delivery of dexamethasone (Dex) to arthritic joints.
- To control the release of Dex in response to inflammatory stimuli for enhanced RA treatment.
Main Methods:
- Assembly of dual-stimuli responsive polymeric micelles using polyethylene glycol-phenylboric acid-triglycerol monostearate (PEG-PBA-TGMS, PPT) conjugates.
- Evaluation of Dex release kinetics under acidic pH and in the presence of matrix metalloproteinases.
- Assessment of micelle accumulation and therapeutic efficacy in an adjuvant-induced arthritis model.
Main Results:
- The PPT micelles demonstrated accelerated release of Dex in response to acidic pH and matrix metalloproteinases.
- Intravenous administration of PPT micelles resulted in preferential accumulation in arthritic joints.
- Significant therapeutic efficacy was observed in the adjuvant-induced arthritis model.
Conclusions:
- Dual-stimuli responsive micelles show potential for targeted drug delivery in inflammatory diseases.
- This approach offers a promising strategy for improving the treatment of rheumatoid arthritis.
- On-demand drug release from polymeric micelles enhances therapeutic outcomes for inflammatory conditions.
