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SILACE - Enhanced energy metabolism contributes to the extended life span of calorie-restricted Caenorhabditis elegans

ABSTRACT: WT worm is unlabeled and eat-2 knock out worm is labeled with 13C6-Lysine. Mixed 1 to 1 by wet weight. Fractionated to 20 fractions by off line 2D-LC.

INSTRUMENT(S): LTQ Orbitrap, instrument model

ORGANISM(S): Caenorhabditis Elegans

SUBMITTER: Masaru Miyagi

PROVIDER: PRD000517 | Pride | 2012-12-06

REPOSITORIES: Pride

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			Action	DRS
	PRIDE_Exp_Complete_Ac_18340.pride.mgf.gz	Mgf
	PRIDE_Exp_Complete_Ac_18340.pride.mztab.gz	Mztab
	PRIDE_Exp_Complete_Ac_18340.xml.gz	Xml
	PRIDE_Exp_Complete_Ac_18341.pride.mgf.gz	Mgf
	PRIDE_Exp_Complete_Ac_18341.pride.mztab.gz	Mztab

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Publications

Enhanced energy metabolism contributes to the extended life span of calorie-restricted Caenorhabditis elegans.

Yuan Yiyuan Y Kadiyala Chandra S CS Ching Tsui-Ting TT Hakimi Parvin P Saha Sudipto S Xu Hua H Yuan Chao C Mullangi Vennela V Wang Liwen L Fivenson Elayne E Hanson Richard W RW Ewing Rob R Ewing Rob R Hsu Ao-Lin AL Miyagi Masaru M Feng Zhaoyang Z

The Journal of biological chemistry 20120718 37

Caloric restriction (CR) markedly extends life span and improves the health of a broad number of species. Energy metabolism fundamentally contributes to the beneficial effects of CR, but the underlying mechanisms that are responsible for this effect remain enigmatic. A multidisciplinary approach that involves quantitative proteomics, immunochemistry, metabolic quantification, and life span analysis was used to determine how CR, which occurs in the Caenorhabditis elegans eat-2 mutants, modifies e ...[more]

PMID: 22810224

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Enhanced energy metabolism contributes to the extended life span of calorie-restricted Caenorhabditis elegans.

Project description:Caloric restriction (CR) markedly extends life span and improves the health of a broad number of species. Energy metabolism fundamentally contributes to the beneficial effects of CR, but the underlying mechanisms that are responsible for this effect remain enigmatic. A multidisciplinary approach that involves quantitative proteomics, immunochemistry, metabolic quantification, and life span analysis was used to determine how CR, which occurs in the Caenorhabditis elegans eat-2 mutants, modifies energy metabolism of the worm, and whether the observed modifications contribute to the CR-mediated physiological responses. A switch to fatty acid metabolism as an energy source and an enhanced rate of energy metabolism by eat-2 mutant nematodes were detected. Life span analyses validated the important role of these previously unknown alterations of energy metabolism in the CR-mediated longevity of nematodes. As observed in mice, the overexpression of the gene for the nematode analog of the cytosolic form of phosphoenolpyruvate carboxykinase caused a marked extension of the life span in C. elegans, presumably by enhancing energy metabolism via an altered rate of cataplerosis of tricarboxylic acid cycle anions. We conclude that an increase, not a decrease in fuel consumption, via an accelerated oxidation of fuels in the TCA cycle is involved in life span regulation; this mechanism may be conserved across phylogeny.

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Effect of cellular and viral miRNAs on target RNA half-life in three human B-cell lines

Project description:Total, nascent and unlabeled RNA were prepared following 1h of labeling with 100 µM 4-thiouridine and 3 replicates analyzed by Affymetrix Gene ST 1.0 arrays Transcript half-lives were determined in DG75-eGFP, DG75-10/12 and BCBL-1 based on nascent/total RNA ratios; unlabeled RNA was analyzed in addition

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786-O ubiquitiome - Loss of BAP1 Results in Growth Inhibition and Enhances Mesenchymal-Epithelial Transition in Kidney Tumor Cells

Project description:786-O WT and BAP1-KO cells were cultured in heavy (13C6-L-arginine, 13C6-L-lysine, Cambridge Isotope Lab) and light (unlabeled L-arginine and L-lysine) SILAC RPMI-1640 medium (Thermo Fisher Scienific), respectively. After more than 10 passages, cells were lysed with 8 M urea and 5 mg protein from each group were mix. The ubiquitinated peptide enrichment was performed using PTMScan® (Cell Signaling Technology, #5562) following the manufacturer’s instructions.

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Effect of cellular and viral miRNAs on target RNA half-life in three human B-cell lines

Project description:Total, nascent and unlabeled RNA were prepared following 1h of labeling with 100 µM 4-thiouridine and 3 replicates analyzed by Affymetrix Gene ST 1.0 arrays

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Vitamin B12 deficiency in Caenorhabditis elegans results in loss of fertility, extended life cycle, and reduced lifespan.

Project description:Vitamin B12 (B12) deficiency has been linked to developmental disorders, metabolic abnormalities, and neuropathy; however, the mechanisms involved remain poorly understood. Caenorhabditis elegans grown under B12-deficient conditions for five generations develop severe B12 deficiency associated with various phenotypes that include decreased egg-laying capacity (infertility), prolonged life cycle (growth retardation), and reduced lifespan. These phenotypes resemble the consequences of B12 deficiency in mammals, and can be induced in C. elegans in only 15 days. Thus, C. elegans is a suitable animal model for studying the biological processes induced by vitamin deficiency.

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Labeling of Bacillus subtilis and Escherichia coli to saturation with different percentages of fully 13C labeled glucose for benchmarking of protein-based stable isotope probing proteomics (Protein-SIP)

Project description:This dataset is part of a study aimed at developing algorithms for the quantification of stable isotope content in microorganisms after labeling them with stable isotope-labeled substrates. In this dataset Escherichia coli and Bacillus subtilis cultures were labeled with different percentages of fully labeled 13C glucose (13C6). Cultures of B. subtilis and E. coli were grown in Bacillus minimal medium or M9 minimal medium (E. coli) in which a percentage of the glucose was replaced with 13C6 glucose for >10 generations to achieve close to complete labeling of cells. The following percentages of 13C6 glucose were added 0, 0.01, 0.025, 0.1, 0.25, 1, 5 and 10%. Triplicate cultures were grown for each percentage. Please note that the unlabeled glucose that was used of course had a natural content of 13C of around 1.1%, thus the 0% added label samples have an actual 13C content of 1.1% and all added label is on top of this value. We included a tab delimited table with this submission providing details on all raw files.

2022-12-30 | PXD023693 | Pride

Caenorhabditis elegans

Project description:H3K36 methylation promotes longevity by enhancing transcriptional fidelity [Worm RNA-Seq]

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Proteomic characterisation of Caenorhabditis elegans larval development

Project description:The nematode Caenorhabditis elegans (C. elegans) is often used as a model organism to study cell and developmental biology. Quantitative mass spectrometry has only recently been performed in C. elegans and, so far, most studies have been done on adult worm samples. Here we use quantitative mass spectrometry to characterise protein level changes across the four larval developmental stages (L1-L4) of C. elegans, in biological triplicate. In total, we identify 4,130 proteins and quantify 1,541 proteins that were identified across all four stages in all three biological repeats with at least 2 unique peptides per protein. Using hierarchical clustering and functional ontological analyses, we identify 21 protein groups containing proteins with similar protein profiles across the four stages, and highlight the most overrepresented biological functions in each of these protein clusters. In addition, we use the dataset to identify putative larval stage specific proteins in each individual developmental stage, as well as in the early and late developmental stages. In summary, this dataset provides a system-wide analysis of protein level changes across the four C. elegans larval developmental stages, which serves as a useful resource for the worm development research community.

2017-12-04 | PXD006676 | Pride

TF ChIP-seq Caenorhabditis elegans

Project description:A catalog of transcription factor (TF) binding sites in the genome is critical for deciphering regulatory relationships. Here we present the culmination of the efforts of the modENCODE (Model Organism ENCyclopedia Of DNA Elements) and modERN (model organism Encyclopedia of Regulatory Networks) consortia to systematically assay TF binding events in vivo in two major model organisms, Drosophila melanogaster (fly) and Caenorhabditis elegans (worm). These datasets comprise 605 TFs identifying 3.6M sites in the fly and 356 TFs identifying 0.9 M sites in the worm, and represent the majority of the regulatory space in each genome. We demonstrate that TFs associate with chromatin in clusters termed “metapeaks”, that larger metapeaks have characteristics of high occupancy target (HOT) regions, and that the importance of consensus sequence motifs bound by TFs depends on metapeak size and complexity. Combining ChIP-seq data with single cell RNA-seq data in a machine learning model identifies particular TFs with a prominent role in promoting target gene expression in specific cell types, even differentiating between parent-daughter cells during embryogenesis. These data are a rich resource for the community that should fuel and guide future investigations into TF function. To facilitate data accessibility and utility, all strains expressing GFP-tagged TFs are available at the stock centers for each organism. The chromatin immunoprecipitation sequencing data are available through the ENCODE Data Coordinating Center, GEO, and through a direct interface (http://epic.gs.washington.edu/modERN/) that provides rapid access to processed data sets and summary analyses, as well as widgets to probe the cell type-specific TF-target relationships.

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