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Stable Isotopic Profiling of Intermediary Metabolic Flux in Developing and Adult Stage Caenorhabditis elegans
Published on: February 27, 2011
Profiling the anaerobic response of C. elegans using GC-MS
Jeffrey A Butler1, Robert J Mishur, Alex F Bokov
1The Barshop Institute for Longevity and Aging Studies, University of Texas Health Science Center at San Antonio, United States of America.
Plos One
|October 3, 2012
Summary
This study reveals Caenorhabditis elegans are mixed acid fermenters under anoxia. They use unconventional metabolic pathways, including branched-chain amino acid catabolism reversal and glyoxylate pathway, to manage reducing equivalents.
Area of Science:
- * Biochemistry
- * Metabolomics
- * Nematology
Background:
- * Caenorhabditis elegans is a widely used model organism in biological research.
- * Understanding metabolic responses to environmental stress, such as anoxia, is crucial.
Purpose of the Study:
- * To investigate the metabolic response of Caenorhabditis elegans to acute anoxia.
- * To characterize the exometabolome of C. elegans under anoxic conditions.
- * To detail methods for exometabolome analysis applicable to other species.
Main Methods:
- * Gas-chromatography mass-spectrometry (GC-MS) was employed to analyze excreted metabolites.
- * Specific protocols were developed for collecting exometabolites and volatile compounds from C. elegans.
- * A mass spectral library of identified metabolites was generated.
Main Results:
- * C. elegans exhibits mixed acid fermentation during acute anoxia.
- * Unconventional metabolic pathways are utilized to remove reducing equivalents.
- * Observed pathways include partial reversal of branched-chain amino acid catabolism and potential novel glyoxylate pathway use.
Conclusions:
- * Caenorhabditis elegans employs unique metabolic strategies for survival under anoxia.
- * The study provides valuable methodological insights for exometabolome analysis in nematodes and potentially other species.
- * Dissemination of the mass spectral library aims to advance metabolomics research.
