Metabolomics

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GNPS - Parallel host and microbial pathways regulate lipid desaturation


ABSTRACT: 4 datasets, each in their own subfolder. 1) acdh-11 comparative metabolomics. 4 genotypes (N2, fcmt-1, WT FAT-7::GFP, and acdh-11;FAT-7::GFP) grown at 3 temperatures (15, 20, 25). Conditioned media (exo-metabolome) and worm pellet (endo-metabolome) isolated and extracted separately. 2) acdh-11 comparative metabolomics re: diet. 2 genotypes (WT FAT-7::GFP, and acdh-11;FAT-7::GFP) and 2 diets (WT E. coli, BW25113, and cyclopropane-deficient E. Coli, JW1653-1). The cyclopropane-deficient strain was additionally supplemented with cyclopropane fatty acids lactobacillic acid (LBA) or dihydrosterculic acid (DHSA) at 20 uM. 3) fcmt-1 comparative metabolomics. 4 genotypes (N2, fcmt-1(gk155709), fcmt-1(tm2382), hacl-1(tm6725)) grown at 20C. Conditioned media (exo-metabolome) and worm pellet (endo-metabolome) isolated and extracted separately. 4) vaccenic acid isotope labeling. 2 genotypes (N2 and hacl-1(tm6725)) grown at 20C. Each genotype was supplemented with vehicle, cis-vaccenic acid (cis-VA), stable isotope labeled D13-cis-VA, trans-vaccenic acid (trans-VA), and stable isotope labeled D13-trans-VA. Conditioned media (exo-metabolome) and worm pellet (endo-metabolome) isolated and extracted separately.

INSTRUMENT(S): Q Exactive HF, Q Exactive

ORGANISM(S): Caenorhabditis Elegans (ncbitaxon:6239)

SUBMITTER: Frank Schroeder  

PROVIDER: MSV000092700 | GNPS | Sun Aug 20 07:50:00 BST 2023

REPOSITORIES: GNPS

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Publications


Fatty acid desaturation is central to metazoan lipid metabolism and provides building blocks of membrane lipids and precursors of diverse signaling molecules. Nutritional conditions and associated microbiota regulate desaturase expression, but the underlying mechanisms have remained unclear. Here, we show that endogenous and microbiota-dependent small molecule signals promote lipid desaturation via the nuclear receptor NHR-49/PPARα in C. elegans. Untargeted metabolomics of a β-oxidation mutant,  ...[more]

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