4.7 Article

Chondroitin sulfate-capped super-paramagnetic iron oxide nanoparticles as potential carriers of doxorubicin hydrochloride

Journal

CARBOHYDRATE POLYMERS
Volume 151, Issue -, Pages 546-556

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2016.05.102

Keywords

Chondroitin sulfate; Glycosaminoglycan; Super-paramagnetic iron oxide; nanoparticle; Doxorubicin; Drug loading; Box-Behnken design

Funding

  1. Council of Scientific and Industrial Research, India [09/591(0122)/2012EMR-1]

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Chondroitin-4-sulfate (CS), a glycosaminoglycan, was used to prepare CS-capped super-paramagnetic iron oxide nanoparticles, which were further employed for loading a water-soluble chemotherapeutic agent (doxorubicin hydrochloride, DOX). CS-capped SPIONs have potential biomedical application in cancer targeting. The optimized formulation had a hydrodynamic size of 91.2 +/- 0.8 nm (PDI; 0.228 +/- 0.004) and zeta potential of -49.1 +/- 1.66 mV. DOX was loaded onto the formulation up to 2% (w/w) by physical interaction with CS. TEM showed nano-sized particles having a core-shell structure. XRD confirmed crystal phase of iron oxide. FT-IR conceived the interaction of iron oxide with CS as bidentate chelation and also confirmed DOX loading. Vibration sample magnetometry confirmed super-paramagnetic nature of nanoparticles, with saturation magnetization of 0.238 emu g(-1). In vitro release profile at pH 7.4 showed that 96.67% of DOX was released within 24 h (first order kinetics). MTT assay in MCF7 cells showed significantly higher (p < 0.0001) cytotoxicity for DOX in SPIONs than DOX solution (IC50 values 6.294 +/- 0.4169 and 11.316 +/- 0.1102 mu g mL(-1), respectively). (C) 2016 Elsevier Ltd. All rights reserved.

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