High-efficient nonviral transfection of the rat thyroid cell line FRTL-5 |
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Authors: | Klagge A Krause K Müller K Haag J Fuhrer D |
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Institution: | Department of Internal Medicine, Division of Endocrinology and Nephrology, University of Leipzig, Leipzig, Germany. |
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Abstract: | FRTL-5 cells are used in many laboratories as an in vitro system of thyroid follicular cells since they share many properties of human thyrocytes. However, the use of FRTL-5 cells for experimental modifications is limited by low transfection efficiencies of lipid-based transfections and the need for cumbersome viral transduction protocols. A new technology - nucleofection - has become available for cell lines that are difficult to transfect. Here, we report the application and optimization of this method in FRTL-5 cells. Using the green fluorescent protein (GFP) as a reporter gene, FRTL-5 cells were easily transfectable with efficiencies over 60%. In addition, the simultaneous transfer of siRNA against GFP was feasible and allowed suppression of GFP over at least 4 days. Furthermore nucleofection was successful for establishing stable FRTL-5 cell clones. In conclusion, this optimized fast and efficient nucleofection protocol offers new properties for the experimental use of FRTL-5 cells. |
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