PLGA 50:50 nanoparticles of paclitaxel: Development, in vitro anti-tumor activity in BT-549 cells and in vivo evaluation

Shavi, Gopal V and Gurram, Aravind K and Deshpande, Praful B and Arumugam, Karthik and Maliyakkal, Naseer and Meka, Sreenivasa R and Udupa, Nayanabhirama (2012) PLGA 50:50 nanoparticles of paclitaxel: Development, in vitro anti-tumor activity in BT-549 cells and in vivo evaluation. Bulletin of Materials Science, 35 (3). pp. 319-326.

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Abstract

Clinical administration of paclitaxel is hindered due to its poor solubility, which necessitates the formulation of novel drug delivery systems to deliver such extreme hydrophobic drug. To formulate nanoparticles which makes suitable to deliver hydrophobic drugs effectively (intravenous) with desired pharmacokinetic profile for breast cancer treatment; in this context in vitro cytotoxic activity was evaluated using BT-549 cell line. PLGA nanoparticles were prepared by emulsion solvent evaporation technique and evaluated for physicochemical parameters, in vitro anti-tumor activity and in vivo pharmacokinetic studies in rats. Particle size obtained in optimized formulation was <200 nm. Encapsulation efficiency was higher at polymer-to-drug ratio of 20:1. In vitro drug release exhibited biphasic pattern with initial burst release followed by slow and continuous release (15 days). In vitro anti-tumor activity of optimized formulation inhibited cell growth for a period of 168 h against BT-549 cells. AUC(0−∞) and t1/2 were found to be higher for nanoparticles with low clearance rate.

Item Type: Article
Uncontrolled Keywords: PLGA 50:50; paclitaxel; BT-549 cells; pharmacokinetics.
Subjects: Pharmacy > MCOPS Manipal > Pharmaceutics
Depositing User: KMC Manipal
Date Deposited: 07 Jul 2012 04:38
Last Modified: 07 Jul 2012 04:38
URI: http://eprints.manipal.edu/id/eprint/76796

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