Document Detail

Multi-walled carbon nanotubes for plasmid delivery into Escherichia coli cells.
MedLine Citation:
PMID:  15856091     Owner:  NLM     Status:  MEDLINE    
Introduction of foreign genes into bacterial cells (transformation) is used for supplementing defective genes or providing additional biological functions. Transformation can be achieved using either chemical or physical methods, e.g., electroporation. Bulk electroporation offers several advantages over chemical methods, including high transformation efficiency, but its application is limited due to the high numbers of cells and plasmids needed as a result of the high death rate of cells during this process, and the difficulty in electroporating single cells. Synthetic inorganic gene nanocarriers have received limited attention in the transformation of bacterial cells. Here we present a plasmid delivery system based on water dispersible multi-walled carbon nanotubes (CNTs) that can simultaneously target the bacterial surface and deliver the plasmids into the cells via temporary nanochannels across the cell envelope. Transformation experiments performed on E. coli provide evidence for the high potential of CNTs for nanoscale cell electroporation.
Jose Rojas-Chapana; Julia Troszczynska; Izabela Firkowska; Christian Morsczeck; Michael Giersig
Publication Detail:
Type:  Journal Article     Date:  2005-03-10
Journal Detail:
Title:  Lab on a chip     Volume:  5     ISSN:  1473-0197     ISO Abbreviation:  Lab Chip     Publication Date:  2005 May 
Date Detail:
Created Date:  2005-04-27     Completed Date:  2005-07-11     Revised Date:  2006-05-01    
Medline Journal Info:
Nlm Unique ID:  101128948     Medline TA:  Lab Chip     Country:  England    
Other Details:
Languages:  eng     Pagination:  536-9     Citation Subset:  IM    
Department of Nanoparticle Technology, Center of Advanced European Studies and Research, Bonn, Germany.
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MeSH Terms
Escherichia coli / cytology*,  physiology
Gene Transfer Techniques
Gold / chemistry
Nanotubes, Carbon / chemistry*
Plasmids / chemistry*,  physiology
Sensitivity and Specificity
Surface Properties
Water / chemistry
Reg. No./Substance:
0/Nanotubes, Carbon; 7440-57-5/Gold; 7732-18-5/Water

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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