Answering the Bell
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We were pleased to receive a recently published study from Dr. Mahendran Subramanian of Keele University. In this study, researchers showed that oscillating nanomagnetic gene transfection could be used to successfully transfect SH‐SY5Y cells as well as our primary hippocampal and cortical neurons on different days in vitro. This novel technique was used to effectively deliver genetic material into various cell types, resulting in high transfection efficiency and viability. Mahendran Subramanian, Aimee‐Jayne Tyler, Eva Maria Luther, Elena Di Daniel, Jenson Lim and Jon Dobson. Oscillating Magnet Array−Based Nanomagnetic Gene Transfection: A Valuable Tool for Molecular Neurobiology Studies. Nanomaterials 2017, 7, 28; doi:10.3390/nano7020028...Primary rat hippocampal and cortical neurons were obtained from Neuromics (Edina, MN, USA) and disassociated using papain disassociation kit (Worthington, NJ, USA) according to the manufacturer’s instructions. Isolated neurons were maintained using neurobasal medium supplemented with 5% FBS, 0.5 mM Glutamax, 2% B27 supplement, 25 μM L‐glutamine and seeded onto poly‐D‐lysine–coated cells culture plates...
Figure 1. Oscillating magnet array−based nanomagnetic gene transfection experimental setup. (A) Representation of a 96‐well oscillating magnet array–based nanomagnetic transfection setup using NdFeB magnetic array (nanotherics); (B) Dimensions of the permanent magnets and magnetostatic (vectorpotential) algorithm based magnetic field density |B| distribution (T) contour plot for the NdFeB magnetic array.
Figure 2. Gene delivery by oscillating nanomagnetic gene transfection in primary cortical neurons. Images of pmaxGFP plasmid expressed in primary neurons using fluorescence microscopy and its corresponding Hoechst 33,342 stained counterpart of transfected DIV 1 (A,C) and DIV 5 (B,D) mature neurons were taken 48 h post transfection.
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