Citation: Dan-Hua Zhou, Guan Zhang, Qing-Song Yu, Zhi-Hua Gan. Folic Acid Modified Polymeric Micelles for Intravesical Instilled Chemotherapy[J]. Chinese Journal of Polymer Science, ;2018, 36(4): 479-487. doi: 10.1007/s10118-018-2009-y shu

Folic Acid Modified Polymeric Micelles for Intravesical Instilled Chemotherapy

a.
National University of Singapore Environmental Research Institute(NERI), National University of Singapore, Singapore 117576, Singapore
b.
Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-inorganic Composite Materials, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
c.
Department of Urology, China-Japan Friendship Hospital, Beijing 100029, China

Corresponding author: Qing-Song Yu, yuqs@mail.buct.edu.cn Zhi-Hua Gan, zhgan@mail.buct.edu.cn
Received Date: 28 June 2017
Accepted Date: 12 July 2017
Available Online: 20 December 2018

In this study, a targeting micellar drug delivery system was developed for intravesical instilled chemotherapy of bladder cancer. The amphiphilic diblock copolymer poly(ε-caprolactone)-block-poly(ethylene glycol) (PCL-b-PEO) with functional amino group (NH₂) at the end of PEO block was synthesized. Then the copolymer was conjugated with folic acid (FA) and fluorescein isothiocyannate (FITC) via the PEO-NH₂ terminus, and then assembled into micelles with the target moiety and fluorescence labeling. In addition, drug loaded micelles were also fabricated with anticancer drug doxorubicin (DOX) encapsulated in the hydrophobic core. The micelles were characterized in terms of size, drug loaded efficiency and critical micellization concentration (CMC) by means of DLS, UV and fluorescence spectra. In vitro cellular uptake and cytotoxicity studies showed that FA modified PCL-b-PEO-FA micelles have a greater targeting efficiency to human bladder cancer cell (T-24 cell) compared to PCL-b-PEO-NH₂ micelles due to the conjugation of FA on the surface, while no targeting effect to normal tissue originated human embryonic kidney 293 (HEK-293) cells was observed, enabling the micelles a promising drug carrier for intravesical instilled chemotherapy of bladder cancer.
- Targeted drug delivery,
- Superficial bladder cancer,
- Intravesical instilled chemotherapy,
- Folic acid,
- Micelles
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1.
沈阳化工大学材料科学与工程学院沈阳 110142