標題: | Overcoming Multidrug Resistance of Breast Cancer Cells by the Micellar Drug Carriers of mPEG-PCL-graft-cellulose |
作者: | Chen, Yung-Tsung Chen, Chao-Hsuan Hsieh, Ming-Fa Chan, Ann Shireen Liau, Ian Tai, Wan-Yu 應用化學系分子科學碩博班 Institute of Molecular science |
關鍵字: | methoxy-poly (ethylene glycol);poly (epsilon-caprolactone);multidrug resistance;P-glycoprotein |
公開日期: | 2009 |
摘要: | The amphiphilic block copolymers methoxypoly (ethylene glycol)-poly (epsilon-caprolactone) (mPEG-PCL) was grafted to 2-hydroxyethyl cellulose (HEC) to produce water-soluble copolymers. Doxorubicin (DOX)-loaded nanoparticles were prepared by dialysis method and the sizes of nanoparticles were determined by dynamic light scattering (DLS) in solution. The size of the nanoparticles was in the range of 197.4 to 340.7 nm. Rhodamine 123 was used to probe the relative P-glycoprotein (P-gp) expression in human breast cancer cell lines MCF-7/WT and MCF-7/ADR. Confocal laser scanning microscopy (CLSM) showed a difference between the fluorescence images of DOX-loaded micelles and free DOX. For a quantitative basis, flow cytometry was done on both cell lines treated with DOX-loaded micelles and free DOX to compare a difference in effect. The amount of DOX-loaded micelles in MCF-7/ADR increased compared to that in the MCF-7/WT cells. This gives insight into how the micellar system developed in this study overcomes the multidrug resistance (MDR) effect. |
URI: | http://hdl.handle.net/11536/134900 |
ISBN: | 978-3-540-92840-9 |
ISSN: | 1680-0737 |
期刊: | 13TH INTERNATIONAL CONFERENCE ON BIOMEDICAL ENGINEERING, VOLS 1-3 |
Volume: | 23 |
Issue: | 1-3 |
起始頁: | 1224 |
結束頁: | + |
Appears in Collections: | Conferences Paper |