A study of Caenorhabditis elegans DAF-2 mutants by metabolomics and differential correlation networks
Cecilia Castro,Jan Krumsiek,Steven A. Murfitt
Molecular BioSystems Pub Date : 01/30/2013 00:00:00 , DOI:10.1039/C3MB25539E
Abstract

daf-2 is one of the most studied mutants in C. elegans: it contains a deletion in the gene orthologue of the insulin/insulin-like growth factor (IGF) receptor. Using high resolution 1H NMR spectroscopy, metabolomics has helped to dissect the metabolic consequences of altered daf-2 signalling. Here, we present a detailed metabolomic analysis of daf-2, using NMR spectroscopy, gas chromatography mass spectrometry (GC-MS) and liquid chromatography mass spectrometry (LC-MS) to integrate information from different pathways. We have then used Pearson and partial correlation analysis to build networks to explore the central role of daf-2 in regulating fatty acid and amino acid metabolism. The results show the tight regulation between these two parts of the metabolome.

Graphical abstract: A study of Caenorhabditis elegans DAF-2 mutants by metabolomics and differential correlation networks