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Release mechanism studies on TFu nanoparticles-in-microparticles system
1The Pharmaceutical College of Jiamusi University, Key Laboratory of Biological Medicine, Preparations of Heilongjiang Province, Jiamusi, China. swt0820@yahoo.com.cn
Colloids and Surfaces. B, Biointerfaces
|March 20, 2012
Summary
A novel nanoparticles-in-microparticles system for N(3)-O-toluyl-5-fluorouracil (TFu) was developed. This TFu delivery system demonstrates controlled release properties, enhancing potential therapeutic efficacy for antitumor applications.
Area of Science:
- Pharmaceutical Sciences
- Drug Delivery Systems
- Nanotechnology
Background:
- 5-fluorouracil (5-Fu) is a key chemotherapeutic agent.
- N(3)-O-toluyl-5-fluorouracil (TFu) is a novel prodrug of 5-Fu with potential antitumor activity.
- Improving the delivery and efficacy of TFu is crucial for cancer treatment.
Purpose of the Study:
- To develop a nanoparticles-in-microparticles (NiMS) delivery system for TFu.
- To optimize the formulation for enhanced drug encapsulation, release properties, and bioavailability.
- To evaluate the potential of TFu-NiMS for improved therapeutic efficacy.
Main Methods:
- Preparation of TFu-loaded nanoparticles-in-microparticles (TFu-NiMS) using ionotropic gelation.
- Optimization of formulation and manufacturing parameters for drug encapsulation efficiency.
- Characterization of TFu-NiMS for particle size, zeta potential, drug loading, and physical stability.
- In vitro drug release studies and kinetic analysis to explore release mechanisms.
Main Results:
- Optimized TFu-NiMS exhibited uniform particle size (350.5 ± 12.6 nm) and positive zeta potential (13.4 ± 0.9 mV).
- High drug entrapment efficiency (75.58 ± 3.25%) and loading (10.19 ± 0.24%) were achieved.
- In vitro release followed Weibull or Ritger-Peppas kinetics, indicating a combination of diffusion and matrix dissolution mechanisms.
- TFu-NiMS demonstrated controlled release properties compared to TFu solutions.
Conclusions:
- The developed TFu-NiMS is a promising drug delivery system for TFu.
- The system offers controlled release, potentially improving bioavailability and therapeutic outcomes.
- TFu-NiMS holds potential for practical oral or intravenous administration in cancer therapy.
