کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1269044 972438 2008 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Gene delivery by electroporation after dielectrophoretic positioning of cells in a non-uniform electric field
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Gene delivery by electroporation after dielectrophoretic positioning of cells in a non-uniform electric field
چکیده انگلیسی

We report the use of dielectrophoresis (DEP) to position U-937 monocytes within a non-uniform electric field, prior to electroporation (EP) for gene delivery. DEP positioning and EP pulsing were both accomplished using a common set of inert planar electrodes, micro-fabricated on a glass substrate. A single-shell model of the cell's dielectric properties and finite-element modeling of the electric field distribution permitted us to predict the major features of cell positioning. The extent to which electric pulses increased the permeability of the cell membranes to florescent molecules and to pEGFPLuc DNA plasmids were found to depend on prior positioning. For a given set of pulse parameters, EP was either irreversible (resulting in cytolysis), reversible (leading to gene delivery), or not detectable, depending on where cells were positioned. Our results clearly demonstrate that position-dependent EP of cells in a non-uniform electric field can be controlled by DEP.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioelectrochemistry - Volume 72, Issue 2, April 2008, Pages 141–148
نویسندگان
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