Publication detail

Isotachophoresis for rapid transformation of Escherichia coli

ALVES, M. NAI, Y.H. POWELL, S.M. MACKA, M. BREADMORE, M.

Original Title

Isotachophoresis for rapid transformation of Escherichia coli

Type

journal article in Web of Science

Language

English

Original Abstract

A frequent limitation of electroporation (EP) and chemical transformation (CT) are the need of tedious and time-consuming procedures for inducing transformation competence, the substantial number of cells required, and the low transformation yields typically achieved. Here, we show a new and rapid electrokinetic method for transformation of small number of noncompetent Escherichia coli TOP10 cells (2-3 x 10(5)) at room temperature. Escherichia coli TOP10 cells and plasmid DNA are sequentially injected into a 50 mu m ID capillary and focused into 11.5 nL by isotachophoresis (ITP) induced by application of high DC voltage (-16 kV). Through ITP, a large excess of plasmid DNA is brought in contact with the cell surface, with the contact time adjusted by application of a counter-pressure (1.3 psi) opposing the ITP movement. The transformation rate was more than 1000-fold higher compared to EP and CT at survival rates greater than 60%.

Keywords

Bacteria; CE; Isotachophoresis; Plasmid; Transformation

Authors

ALVES, M.; NAI, Y.H.; POWELL, S.M.; MACKA, M.; BREADMORE, M.

Released

24. 2. 2022

ISBN

0173-0835

Periodical

Electrophoresis

Year of study

43

Number

4

State

Federal Republic of Germany

Pages from

543

Pages to

547

Pages count

5

URL

https://pubmed.ncbi.nlm.nih.gov/34837243/

BibTex

@article{BUT176764,
  author="ALVES, M. and NAI, Y.H. and POWELL, S.M. and MACKA, M. and BREADMORE, M.",
  title="Isotachophoresis for rapid transformation of Escherichia coli",
  journal="Electrophoresis",
  year="2022",
  volume="43",
  number="4",
  pages="543--547",
  doi="10.1002/elps.202100095",
  issn="0173-0835",
  url="https://pubmed.ncbi.nlm.nih.gov/34837243/"
}