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Molecules 2016, 21(9), 1187; doi:10.3390/molecules21091187

Size-Dependent Photodynamic Anticancer Activity of Biocompatible Multifunctional Magnetic Submicron Particles in Prostate Cancer Cells

1
Plasma Bioscience Research Center, Kwangwoon University, 20 Kwangwoongil, Nowon-gu, Seoul 01897, Korea
2
Department of Medical Engineering, Dongguk University College of Medicine, Gyeonggi-do 10326, Korea
3
Advanced Materials Research Institute, University of New Orleans, New Orleans, LA 70148, USA
4
Department of Electrical & Biological Physics, Kwangwoon University, 20 Kwangwoongil, Nowon-gu, Seoul 01897, Korea
5
Department of Chemistry, Gangneung-Wonju National University, Gangneung 25457, Korea
*
Authors to whom correspondence should be addressed.
Academic Editor: Norbert Lange
Received: 7 July 2016 / Revised: 18 August 2016 / Accepted: 31 August 2016 / Published: 6 September 2016
(This article belongs to the Special Issue Photodynamic Therapy)
View Full-Text   |   Download PDF [3810 KB, uploaded 6 September 2016]   |  

Abstract

In this study, newly designed biocompatible multifunctional magnetic submicron particles (CoFe2O4-HPs-FAs) of well-defined sizes (60, 133, 245, and 335 nm) were fabricated for application as a photosensitizer delivery agent for photodynamic therapy in cancer cells. To provide selective targeting of cancer cells and destruction of cancer cell functionality, basic cobalt ferrite (CoFe2O4) particles were covalently bonded with a photosensitizer (PS), which comprises hematoporphyrin (HP), and folic acid (FA) molecules. The magnetic properties of the CoFe2O4 particles were finely adjusted by controlling the size of the primary CoFe2O4 nanograins, and secondary superstructured composite particles were formed by aggregation of the nanograins. The prepared CoFe2O4-HP-FA exhibited high water solubility, good MR-imaging capacity, and biocompatibility without any in vitro cytotoxicity. In particular, our CoFe2O4-HP-FA exhibited remarkable photodynamic anticancer efficiency via induction of apoptotic death in PC-3 prostate cancer cells in a particle size- and concentration-dependent manner. This size-dependent effect was determined by the specific surface area of the particles because the number of HP molecules increased with decreasing size and increasing surface area. These results indicate that our CoFe2O4-HP-FA may be applicable for photodynamic therapy (PDT) as a PS delivery material and a therapeutic agent for MR-imaging based PDT owing to their high saturation value for magnetization and superparamagnetism. View Full-Text
Keywords: biocompatible multifunctional submicron particles; hematoporphyrin; folic acid; cytotoxicity; photodynamic anticancer therapy; magnetic resonance imaging biocompatible multifunctional submicron particles; hematoporphyrin; folic acid; cytotoxicity; photodynamic anticancer therapy; magnetic resonance imaging
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Choi, K.-H.; Nam, K.C.; Malkinski, L.; Choi, E.H.; Jung, J.-S.; Park, B.J. Size-Dependent Photodynamic Anticancer Activity of Biocompatible Multifunctional Magnetic Submicron Particles in Prostate Cancer Cells. Molecules 2016, 21, 1187.

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