Ultra-small graphene oxide functionalized with polyethylenimine (PEI) for very efficient gene delivery in cell and zebrafish embryos

Zhou, Xiang, Laroche, Fabrice, Lamers, Gerda E. M., Torraca, V., Voskamp, Patrick, Lu, Tao, Chu, Fuqiang, Spaink, Herman P., Abrahams, Jan Pieter and Liu, Zunfeng 2012. Ultra-small graphene oxide functionalized with polyethylenimine (PEI) for very efficient gene delivery in cell and zebrafish embryos. Nano Research. 5, pp. 703-709. https://doi.org/10.1007/s12274-012-0254-x

TitleUltra-small graphene oxide functionalized with polyethylenimine (PEI) for very efficient gene delivery in cell and zebrafish embryos
TypeJournal article
AuthorsZhou, Xiang, Laroche, Fabrice, Lamers, Gerda E. M., Torraca, V., Voskamp, Patrick, Lu, Tao, Chu, Fuqiang, Spaink, Herman P., Abrahams, Jan Pieter and Liu, Zunfeng
Abstract

Efficient DNA delivery is essential for introducing new genes into living cells. However, effective virus-based systems carry risks and efficient synthetic systems that are non-toxic remain to be discovered. The bottle-neck in synthetic systems is cytotoxicity, caused by the high concentration of DNA-condensing compounds required for efficient uptake of DNA. Here we report a polyethyleneimine (PEI) grafted ultra-small graphene oxide (PEI-g-USGO) for transfection. By removing the free PEI and ensuring a high PEI density on small sized graphene, we obtained very high transfection efficiencies combined with very low cytotoxicity. Plasmid DNA could be transfected into mammalian cell lines with up to 95% efficiency and 90% viability. Transfection in zebrafish embryos was 90%, with high viability, compared to efficiencies of 30% or lower for established transfection technologies. This result suggests a novel approach to the design of synthetic gene delivery vehicles for research and therapy.

JournalNano Research
Journal citation5, pp. 703-709
ISSN1998-0000
1998-0124
Year2012
PublisherSpringer
Digital Object Identifier (DOI)https://doi.org/10.1007/s12274-012-0254-x
Publication dates
Published15 Sep 2012

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