title: A Novel Docetaxel-Loaded Poly (ε-Caprolactone)/Pluronic F68 Nanoparticle Overcoming Multidrug Resistance for Breast Cancer Treatment.
abstract: Multidrug resistance (MDR) in tumor cells is a significant obstacle to the success of chemotherapy in many cancers. The purpose of this research is to test the possibility of docetaxel-loaded poly (ε-caprolactone)/Pluronic F68 (PCL/Pluronic F68) nanoparticles to overcome MDR in docetaxel-resistance human breast cancer cell line. Docetaxel-loaded nanoparticles were prepared by modified solvent displacement method using commercial PCL and self-synthesized PCL/Pluronic F68, respectively. PCL/Pluronic F68 nanoparticles were found to be of spherical shape with a rough and porous surface. The nanoparticles had an average size of around 200 nm with a narrow size distribution. The in vitro drug release profile of both nanoparticle formulations showed a biphasic release pattern. There was an increased level of uptake of PCL/Pluronic F68 nanoparticles in docetaxel-resistance human breast cancer cell line, MCF-7 TAX30, when compared with PCL nanoparticles. The cytotoxicity of PCL nanoparticles was higher than commercial Taxotere®in the MCF-7 TAX30 cell culture, but the differences were not significant (p > 0.05). However, the PCL/Pluronic F68 nanoparticles achieved significantly higher level of cytotoxicity than both of PCL nanoparticles and Taxotere®(p < 0.05), indicating docetaxel-loaded PCL/Pluronic F68 nanoparticles could overcome multidrug resistance in human breast cancer cells and therefore have considerable potential for treatment of breast cancer.
authors.affiliation: The Shenzhen Key Lab of Gene and Antibody Therapy, Center for Biotech and Bio-Medicine and Division of Life Sciences, Graduate School at Shenzhen, Tsinghua University, L308, Tsinghua Campus, Xili University Town, 518055, Shenzhen, Guangdong, China. mei.lin@sz.tsinghua.edu.cn.
authors.forename: Lin
authors.initials: L
authors.lastname: Mei
authors.forename: Yangqing
authors.initials: Y
authors.lastname: Zhang
authors.forename: Yi
authors.initials: Y
authors.lastname: Zheng
authors.forename: Ge
authors.initials: G
authors.lastname: Tian
authors.forename: Cunxian
authors.initials: C
authors.lastname: Song
authors.forename: Dongye
authors.initials: D
authors.lastname: Yang
authors.forename: Hongli
authors.initials: H
authors.lastname: Chen
authors.forename: Hongfan
authors.initials: H
authors.lastname: Sun
authors.forename: Yan
authors.initials: Y
authors.lastname: Tian
authors.forename: Kexin
authors.initials: K
authors.lastname: Liu
authors.forename: Zhen
authors.initials: Z
authors.lastname: Li
authors.forename: Laiqiang
authors.initials: L
authors.lastname: Huang