期刊
DRUG DELIVERY
卷 29, 期 1, 页码 1437-1446出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/10717544.2022.2072413
关键词
Microsphere; microfluidics; insoluble small-molecule drug; poly(lactic-co-glycolic acid); pharmacokinetics
资金
- Project of Hunan Science and Technology [2020JJ9011, 2020JJ9020, 2021JJ80078]
- Graduate Independent Exploration and Innovation Project Foundation of Central South University [2020zzts817]
- Hunan Graduate Research and Innovation Project Foundation [CX20200119]
A new microfluidic device was used to prepare sustained-release microspheres loaded with bicalutamide, showing a smooth surface and uniform size with a releasing duration of up to 40 days in vitro and 30 days in vivo. The sustained-release microspheres have good application prospects in precise delivery and sustainable release of insoluble small-molecule drugs.
Microspheres play an important role in controlling drug delivery and release rate accurately. To realize the sustainable release of insoluble small-molecule drugs, a new three-phase flow-focusing microfluidic device was developed to produce the drug-loaded sustained-release microspheres which were prepared with bicalutamide (BCS class-II) as the model drug and poly(lactide-co-glycolide) (PLGA) as the carrier material. Under optimized prescription conditions, the microspheres showed a smooth surface and uniform size of 51.33 mu m with a CV value of 4.43%. Sustained-release microspheres had a releasing duration of around 40 days in vitro without any initial burst release. The drug release mechanism of the microspheres was drug diffusion and polymer erosion. Meanwhile, the drug release of microspheres in vivo could be up to 30 days. Briefly, the microfluidic device in this study provides a new solution for the preparation of sustained-release microspheres for insoluble small-molecule drugs. PLGA sustained-release microspheres developed by the microfluidic device have good application prospects in precise delivery and sustainable release of insoluble small-molecule drugs.
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