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MetabolomicsLipidFrag: Improving reliability of in silico fragmentation of lipids and application to the Caenorhabditis elegans lipidome
Lipid identification is a major bottleneck in high-throughput lipidomics studies. We combined the in silico fragmentation tool MetFrag with LipidMaps lipid-class specific classifiers which calculate probabilities for lipid class assignments. The LipidFrag approach was then applied to MS/MS spectra o...
2017-03-09 | MTBLS291 | MetaboLights
MetabolomicsEnergy-stress-mediated AMPK activation inhibits ferroptosis

Energy stress depletes ATP and induces cell death. Here we identify an unexpected inhibitory role of energy stress on ferroptosis, a form of regulated cell death induced by iron-dependent lipid peroxidation. We found that ferroptotic cell death and lipid peroxidation can be inhibited by treatment...

2023-01-31 | MTBLS1399 | MetaboLights
MetabolomicsComparison of lipidome profiles of Caenorhabditis elegans—results from an inter-laboratory ring trial

Introduction

Lipidomic profiling allows 100s if not 1000s of lipids in a sample to be detected and quantified. Modern lipidomics techniques are ultra-sensitive assays that enable the discovery of novel biomarkers in a variety of fields and provide new insight in mechanistic investigations. D...
2022-02-21 | MTBLS2016 | MetaboLights
MetabolomicsMulti-omics analysis of xylem sap uncovers dynamic modulation of poplar defenses by ammonium and nitrate
Xylem sap is the major transport route for nutrients from roots to shoots. In the present study, we investigated how variations in nitrogen (N) nutrition affected the metabolome and proteome of xylem sap and the growth of the xylem endophyte Brennaria salicis, and we also report transcriptional re-w...
2022-07-04 | MTBLS2305 | MetaboLights
MetabolomicsLipid Data Analyzer: Analysis of a complex biological system from murine liver samples (Murine liver lipidome experiment)
Lipid Data Analyzer (LDA; http://genome.tugraz.at/lda2) provides automated and reliable annotation of lipid species and their molecular structures in high-throughput data from chromatography-coupled tandem mass spectrometry using embedded rule sets. Using various low- and high-resolution mass spectr...
2017-11-07 | MTBLS396 | MetaboLights
MetabolomicsLipid Data Analyzer: The LDA algorithm against the in silico library LipidBlast (LipidBlast benchmarking experiment)
Lipid Data Analyzer (LDA; http://genome.tugraz.at/lda2) provides automated and reliable annotation of lipid species and their molecular structures in high-throughput data from chromatography-coupled tandem mass spectrometry using embedded rule sets. Using various low- and high-resolution mass spectr...
2017-11-07 | MTBLS397 | MetaboLights
MetabolomicsLipid Data Analyzer: Novel lipid species and identification of regio-isomeric lipid species (HCD characterization and regioisomer detection)
Lipid Data Analyzer (LDA; http://genome.tugraz.at/lda2) provides automated and reliable annotation of lipid species and their molecular structures in high-throughput data from chromatography-coupled tandem mass spectrometry using embedded rule sets. Using various low- and high-resolution mass spectr...
2017-11-07 | MTBLS462 | MetaboLights
MetabolomicsLipidomic analysis of lipid droplets from murine hepatocytes reveals distinct signatures for nutritional stress
Liver steatosis can be induced by fasting or high-fat diet. We investigated by lipidomic analysis whether such metabolic states are reflected in the lipidome of hepatocyte lipid droplets (LDs) from mice fed normal chow diet (FED), fasted (FAS), or fed a high-fat diet (HFD). LC-MS/MS at levels of lip...
2014-08-19 | MTBLS26 | MetaboLights
MetabolomicsMAVEN2: An Updated Open-Source Mass Spectrometry Exploration Platform

MAVEN, an open-source software program for analysis of LC-MS metabolomics data, was originally released in 2010. As mass spectrometry has advanced in the intervening years, MAVEN has been periodically updated to reflect this advancement. This manuscript describes a major update to the program, MA...

2024-07-22 | MTBLS3097 | MetaboLights
MetabolomicsGlycerophospholipid remodeling is critical for orthoflavivirus infection

Flavivirus infection is tightly connected to host lipid metabolism. Here, we performed shotgun lipidomics of cells infected with neurotropic Zika, West Nile and tick-borne encephalitis viruses, as well as dengue and yellow fever virus. Early in infection specific lipids accumulated, e.g., neutral...

2025-02-24 | MTBLS11030 | MetaboLights
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