Extraction and detection of DNA from Bacillus anthracis spores and the vegetative cells within 1 min

Anal Chem. 2008 Jun 1;80(11):4125-32. doi: 10.1021/ac800519r. Epub 2008 May 7.

Abstract

The use of a combination of low-cost technologies to both extract and detect anthrax DNA from spores and vegetative cells in two steps within 1 min is described. In a cavity, microwave energy is highly focused using thin-film aluminum "bow-tie" structures, to extract DNA from whole spores within 20 s. The detection of the released DNA, from less than 1000 vegetative cells, without additional preprocessing steps is accomplished in an additional 30 s by employing the microwave-accelerated metal-enhanced fluorescence technique. The new platform technology presented here is a highly attractive alternative method for DNA extraction and the fast detection of gram-positive bacteria and potentially other pathogenic species and cells as well.

Publication types

  • Research Support, N.I.H., Extramural

MeSH terms

  • Aluminum / chemistry
  • Animals
  • Bacillus anthracis / cytology*
  • DNA / analysis*
  • DNA / chemistry
  • DNA / isolation & purification*
  • DNA, Bacterial / analysis*
  • DNA, Bacterial / chemistry
  • DNA, Bacterial / isolation & purification*
  • Electrophoresis, Agar Gel
  • Fluorescence
  • Metals / chemistry
  • Microscopy, Electron, Transmission
  • Microwaves
  • Spores, Bacterial / chemistry
  • Time Factors

Substances

  • DNA, Bacterial
  • Metals
  • DNA
  • Aluminum