Nano Archive

Mesoporous silica nanoparticles deliver DNA and chemicals into plants

Torney, Francois and Trewyn, Brian G. and Lin, Victor S. -Y. and Wang, Kan (2007) Mesoporous silica nanoparticles deliver DNA and chemicals into plants. NATURE NANOTECHNOLOGY, 2 (5). pp. 295-300.

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Surface-functionalized silica nanoparticles can deliver DNA(1-8) and drugs(9-15) into animal cells and tissues. However, their use in plants is limited by the cell wall present in plant cells. Here we show a honeycomb mesoporous silica nanoparticle (MSN) system with 3-nm pores that can transport DNA and chemicals into isolated plant cells and intact leaves. We loaded the MSN with the gene and its chemical inducer and capped the ends with gold nanoparticles to keep the molecules from leaching out. Uncapping the gold nanoparticles released the chemicals and triggered gene expression in the plants under controlled-release conditions. Further developments such as pore enlargement and multifunctionalization of these MSNs may offer new possibilities in target-specific delivery of proteins, nucleotides and chemicals in plant biotechnology.

Item Type:Article
Subjects:Physical Science > Nano objects
Biomedical Science > Nanoscale biological processes
Biomedical Science > Nanobiotechnology
ID Code:2595
Deposited By:Anuj Seth
Deposited On:09 Jan 2009 17:53
Last Modified:20 Jan 2009 11:48

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