Effect of varying magnetic fields on targeted gene delivery of nucleic acid-based molecules

Oral, Özlem and Çıkım, Taha Abdullah and Zuvin, Merve and Ünal, Özlem and Yağcı-Acar, Havva and Gözüaçık, Devrim and Koşar, Ali (2015) Effect of varying magnetic fields on targeted gene delivery of nucleic acid-based molecules. Annals of Biomedical Engineering, 43 (11). pp. 2816-2826. ISSN 0090-6964 (Print) 1573-9686 (Online)

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Several physical methods have been developed to introduce nucleic acid expression vectors into mammalian cells. Magnetic transfection (magnetofection) is one such transfection method, and it involves binding of nucleic acids such as DNA, RNA or siRNA to magnetic nanoparticles followed by subsequent exposure to external magnetic fields. However, the challenge between high efficiency of nucleic acid uptake by cells and toxicity was not totally resolved. Delivery of nucleic acids and their transport to the target cells require carefully designed and controlled systems. In this study, we introduced a novel magnetic system design providing varying magnet turn speeds and magnetic field directions. The system was tested in the magnetofection of human breast (MCF-7), prostate (DU-145, PC-3) and bladder (RT-4) cancer cell lines using green fluorescent protein DNA as a reporter. Polyethylenimine coated superparamagnetic iron oxide nanoparticles (SPIONs) were used as nucleic acid carriers. Adsorption of PEI on SPION improved the cytocompatibility dramatically. Application of external magnetic field increased intracellular uptake of nanoparticles and transfection efficiency without any additional cytotoxicity. We introduce our novel magnetism-based method as a promising tool for enhanced nucleic acid delivery into mammalian cells.
Item Type: Article
Uncontrolled Keywords: Ferrofluid; Magnetic actuation; Vertical and horizontal magnetic field; Polyethyleneimine (PEI); Super-paramagnetic iron oxide nanoparticles (SPIONs); Magnetofection; Green fluorescent protein (GFP)-DNA; MCF-7; PC-3; DU-145; RT-4
Subjects: T Technology > TJ Mechanical engineering and machinery
R Medicine > R Medicine (General)
T Technology > TK Electrical engineering. Electronics Nuclear engineering
R Medicine > RM Therapeutics. Pharmacology
Divisions: Faculty of Engineering and Natural Sciences > Academic programs > Biological Sciences & Bio Eng.
Faculty of Engineering and Natural Sciences > Academic programs > Mechatronics
Faculty of Engineering and Natural Sciences
Depositing User: Devrim Gözüaçık
Date Deposited: 20 Nov 2015 14:57
Last Modified: 26 Apr 2022 09:24
URI: https://research.sabanciuniv.edu/id/eprint/27516

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