Direct intranuclear injection of cDNA is an effective transfection technique for post-mitotic cells. This method provides high levels of heterologous protein expression from single or multiple cDNA constructs and enables protein function to be studied in a physiologically relevant environment with a variety of single cell assays.
Lu, V. B., Williams, D. J., Won, Y., Ikeda, S. R. Intranuclear Microinjection of DNA into Dissociated Adult Mammalian Neurons. J. Vis. Exp. (34), e1614, doi:10.3791/1614 (2009).