High-throughput analysis of multiple stress pathways using GFP reporters in C. elegans

D. De Pomerai, C. Anbalagan, I. Lafayette, D. Rajagopalan, M. Loose, M. Haque, J. King

Research output: Chapter in Book/Conference proceedingBook Chapterpeer-review

3 Citations (Scopus)

Abstract

Stress-responsive genes belonging to multiple defensive pathways in the nematode C. elegans are cross-regulated by kinase signalling (AKT-1/-2, p38 MAPK) and transcription factors (DAF-16, SKN-1). This cross-talk between stress pathways implies that they are best regarded as a stress-response network (SRN), whose behaviour as a whole should be amenable to mathematical modelling. We have used GFP reporter strains to provide a rapid readout of expression levels for 24 genes, representing principal outputs and transcription factors in the heat-shock, metal-binding, oxidative stress, phase I & phase II detoxification, and genotoxic stress pathways. Acute toxicity data (up to ∼24 h) has been generated for selected metal (presented here) and pesticide toxicants across a wide range of doses, and common response patterns identified. Mathematical modelling of these response data, informed by an understanding of the underlying genetic circuitry, should allow our model to predict the likely toxicity of pollutant mixtures. Future work will test the accuracy of such predictions, leading to an iterative process of model refinement.

Original languageEnglish
Title of host publicationEnvironmental Toxicology III
PublisherWITPress
Pages177-187
Number of pages11
Volume132
ISBN (Print)9781845644383
DOIs
Publication statusPublished - 2010
Externally publishedYes

Keywords

  • caenorhabditis elegans
  • high-throughput GFP reporter assays
  • mathematical modelling
  • metal toxicity
  • mixture toxicity
  • stress-response network

ASJC Scopus subject areas

  • Environmental Science (all)

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