Design and application of a biosensor for monitoring toxicity of compounds to eukaryotes

R P Hollis, K Killham, L A Glover

Research output: Contribution to journalArticle

66 Citations (Scopus)

Abstract

Here we describe an alternative approach to currently used cytotoxicity analyses through applying eukaryotic microbial biosensors. The yeast Saccharomyces cererisiae was genetically modified to express firefly luciferase, generating a bioluminescent yeast strain, The presence of any toxic chemical that interfered with the cells' metabolism resulted in a quantitative decrease in bioluminescence. In this study, it was demonstrated that the Luminescent yeast strain senses chemicals known to be toxic to eukaryotes in samples assessed as nontoxic by prokaryotic biosensors. As the cell wall and adaptive mechanisms of S. cerevisiae cells enhance stability and protect from extremes of pH, solvent exposure, and osmotic shock, these inherent properties were exploited to generate a biosensor that should detect a wide range of both organic and inorganic toxins under extreme conditions.

Original languageEnglish
Pages (from-to)1676-1679
Number of pages4
JournalApplied and Environmental Microbiology
Volume66
Publication statusPublished - 2000

Keywords

  • SACCHAROMYCES-CEREVISIAE
  • INTRACELLULAR PH
  • ACETIC-ACID
  • YEAST
  • ETHANOL
  • CELLS
  • DNA

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