pH-responsive glycol chitosan-cross-linked carboxymethyl-β-cyclodextrin nanoparticles for controlled release of anticancer drugs
Yiwen Wang,* Fei Qin,* Haina Tan, Yan Zhang, Miao Jiang, Mei Lu, Xin Yao School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing, People’s Republic of China *These authors contributed equally to this work Abstract: Carboxymethyl-&bet...
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| Autores principales: | , , , , , , |
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| Formato: | article |
| Lenguaje: | EN |
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Dove Medical Press
2015
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| Acceso en línea: | https://doaj.org/article/2f5ba908b5c5432f8307b6493a96102b |
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| Sumario: | Yiwen Wang,* Fei Qin,* Haina Tan, Yan Zhang, Miao Jiang, Mei Lu, Xin Yao School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing, People’s Republic of China *These authors contributed equally to this work Abstract: Carboxymethyl-β-cyclodextrin (CMβ-CD)-modified glycol chitosan (GCS) nanoparticles (GCS-CMβ-CD NPs) were synthesized, and their pH-sensitive drug-release properties were investigated. GCS-CMβ-CD NPs could encapsulate doxorubicin hydrochloride (DOX), and the encapsulation efficiency and loading capacity increased with the amount of CMβ-CD. Drug-release studies indicate that DOX released was greater in acidic medium (pH 5.0) than in weakly basic medium (pH 7.4). The mechanism underlying the pH-sensitive properties of the carrier was analyzed. Finally, the MCF-7 (human breast cancer) and SW480 cell lines (human colon cancer) were used to evaluate the cytotoxicity of the NPs. The drug-loaded carriers show good inhibition of the growth of cancer cells compared with free DOX, and the carriers have good biocompatibility. In addition, the drug-loaded NPs have sustained drug-release properties. All these properties of the newly synthesized GCS-CMβ-CD NPs suggest a promising potential as an effective anticancer drug-delivery system for controlled drug release. Keywords: MCF-7, SW480, surface plasmon resonance, encapsulation efficiency, loading capacity, cell viability |
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