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J Neurosci Methods. 2001 Dec 15;112(2):95-9.

Improving the transfection efficiency of post-mitotic neurons.

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GIBCO Cell Culture R&D, Invitrogen Corporation, 3175, Staley Road, Grand Island, NY 14072, USA.


The transfection of post-mitotic cells, including primary cortical and hippocampal neurons, has proven for the most part to be inefficient. Methods such as DNA/Ca++ phosphate co-precipitation, electroporation, cationic lipids and micro-injection are often toxic to the cell and rarely give a transfection efficiency exceeding 3% of the surviving culture. Virus transfection methods using modified viruses such as adeno and semliki-forest virus have been shown to be more efficient but the procedures are often time consuming and virus infections may interfere with protein processing. In this study, we evaluated the transfection efficiency of cells from E18 rat embryonic cortical and hippocampal tissues using three cationic lipids: LIPOFECTAMINE, LIPOFECTAMINE Plus, and LIPOFECTAMINE 2000. The method of transfection was by a traditional reporter gene beta-galactosidase (pCMV.SPORT-beta-gal). Results show that out of the three cationic lipids tested, LIPOFECTAMINE 2000 allows for a significantly higher transfection efficiency. Transfection efficiency with LIPOFECTAMINE or LIPOFECT-AMINE Plus was <3%. In contrast, transfection efficiency with LIPOFECT-AMINE 2000 was approximately 20-25% with the cortical neurons and 25-30% with the hippocampal neurons.

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