Proteome dataset of the fission yeast during glucose starvation
Ontology highlight
ABSTRACT:
INSTRUMENT(S): timsTOF Pro
ORGANISM(S): Schizosaccharomyces Pombe 972h- (ncbitaxon:284812)
SUBMITTER: 
Josephine Galipon
PROVIDER: MSV000092327 | MassIVE | Sat Jul 01 15:11:00 BST 2023
SECONDARY ACCESSION(S): PXD043446
REPOSITORIES: MassIVE
Similar Datasets
Project description:Inorganic phosphate is an essential nutrient acquired by cells from their environment and assimilated into myriad intracellular metabolites and macromolecules. Here we characterize the metabolic responses of fission yeast to a 24-h interval of phosphate starvation, during which cells enter a state of G0 quiescence. Time-resolved profiling revealed that many key phosphometabolites were progressively depleted, including: (i) NTPs, NDPs, and dNTPs; (ii) coenzyme A, NAD+, NADP+, NADH, and ADP-ribose; (iii) glycolysis pathway intermediates upstream of pyruvate; (iv) pentose phosphate pathway intermediates from 6-phosphogluconate to sedoheptulose-7-phosphate; (v) nucleotide sugars GDP-glucose/mannose, UDP-glucose/galactose, and UDP-GalNAc/GluNAc; and (vi) phospholipid precursors glycerol-3-phosphate, CDP-choline, and glycerophosphocholine. By contrast, early Krebs cycle intermediates accumulated during phosphate starvation. Other metabolic changes included: (i) interdiction of de novo pyrimidine synthesis; (ii) depletion of S-adenosylmethionine and S-adenosylhomocysteine; (iii) transient accumulation of polyamine biosynthetic intermediates putrescine, S-adenosylmethioninamine and 5-methylthioadenosine; (iv) accumulation of betaine (correlating with an increase in expression of atd1 mRNA encoding aldehyde dehydrogenase); and (v) depletion of aminoadipate pathway intermediates 2-oxoadipate, 2-aminoadipate and saccharopine. Replenishing phosphate after 24 h of starvation resulted in restoration of the metabolite levels to similar levels as non-starved controls (over 2 to 12 h) as cells exited quiescence and resumed growth.
2024-12-17 | MSV000096678 | MassIVE
Project description:Rheb, a ras-like small GTPase conserved from human to yeast, controls Tor kinase and plays a central role in regulation of cell growth depending on extracellular conditions. Fission yeast Rheb regulates amino acid uptake as well as response to nitrogen starvation. In this study we generated two mutants of Rheb, rhb1-DA4 and rhb1-DA8, and characterized them genetically. V17A mutation within the G1 box defined for the ras-like GTPases was responsible for rhb1-DA4, and Q52R I76F within the switch II domain for rhb1-DA8. In fission yeast, two events, induction of a meiosis initiating gene mei2+ and cell division without cell growth, are a typical response to nitrogen starvation. Under nitrogen-rich conditions, Rheb stimulates Tor kinase, which, in turn, suppresses the response to nitrogen starvation. While amino acid uptake was prevented by both rhb1-DA4 and rhb1-DA8 in a dominant fashion, the response to nitrogen starvation was prevented only by rhb1-DA4. rhb1-DA8 thereby allowed genetic dissection of the Rheb-dependent signaling cascade. We postulate that Rheb in fission may have two downstream elements, Tor kinase for regulation of the response to nitrogen starvation and the other element for regulation of amino acid uptake.
2009-09-29 | GSE14626 | GEO
Project description:Glucose as a source of energy is centrally important to our understanding of life. We investigated the cell division-quiescence behavior of the fission yeast Schizosaccharomyces pombe under a wide range of glucose concentrations (0-111 mM). The mode of S. pombe cell division under a microfluidic perfusion system was surprisingly normal under highly diluted glucose concentrations (5.6 mM, 1/20 of the standard medium, within human blood sugar levels). Division became stochastic, accompanied by a curious division-timing inheritance, in 2.2-4.4 mM glucose. A critical transition from division to quiescence occurred within a narrow range of concentrations (2.2-1.7 mM). Under starvation (1.1 mM) conditions, cells were mostly quiescent and only a small population of cells divided. Under fasting (0 mM) conditions, division was immediately arrested with a short chronological lifespan (16 h). When cells were first glucose starved prior to fasting, they possessed a substantially extended lifespan (∼14 days). We employed a quantitative metabolomic approach for S. pombe cell extracts, and identified specific metabolites (e.g. biotin, trehalose, ergothioneine, S-adenosyl methionine and CDP-choline), which increased or decreased at different glucose concentrations, whereas nucleotide triphosphates, such as ATP, maintained high concentrations even under starvation. Under starvation, the level of S-adenosyl methionine increased sharply, accompanied by an increase in methylated amino acids and nucleotides. Under fasting, cells rapidly lost antioxidant and energy compounds, such as glutathione and ATP, but, in fasting cells after starvation, these and other metabolites ensuring longevity remained abundant. Glucose-starved cells became resistant to 40 mM H(2)O(2) as a result of the accumulation of antioxidant compounds.
2017-07-06 | MTBLS316 | MetaboLights
Project description:RNA-seq analysis compares gene expression of the fission yeast (Schizossacharomyces pombe) ecl123∆ mutant at various times after phosphate starvation (4, 8, 12, 24, 36 and 48h) to the ecl123∆ mutant fission yeast strain grown in phosphate replete conditions (0h, prior to phosphate starvation).
2024-01-27 | GSE247922 | GEO
Project description:This RNA-Seq analysis compares gene expression of the pho7∆ fission yeast (Schizosaccharomyces pombe) strain prior to phosphate starvation (0 HR), i.e. in phosphate replete conditions, and at various times after phosphate starvation (4, 8, 12, 24, 36, and 48 HR) contrasting to the WT fission yeast S. pombe cells grown in phosphate replete conditions (WT 0HR)
2024-01-27 | GSE247799 | GEO
Project description:Rheb, a ras-like small GTPase conserved from human to yeast, controls Tor kinase and plays a central role in regulation of cell growth depending on extracellular conditions. Fission yeast Rheb regulates amino acid uptake as well as response to nitrogen starvation. In this study we generated two mutants of Rheb, rhb1-DA4 and rhb1-DA8, and characterized them genetically. V17A mutation within the G1 box defined for the ras-like GTPases was responsible for rhb1-DA4, and Q52R I76F within the switch II domain for rhb1-DA8. In fission yeast, two events, induction of a meiosis initiating gene mei2+ and cell division without cell growth, are a typical response to nitrogen starvation. Under nitrogen-rich conditions, Rheb stimulates Tor kinase, which, in turn, suppresses the response to nitrogen starvation. While amino acid uptake was prevented by both rhb1-DA4 and rhb1-DA8 in a dominant fashion, the response to nitrogen starvation was prevented only by rhb1-DA4. rhb1-DA8 thereby allowed genetic dissection of the Rheb-dependent signaling cascade. We postulate that Rheb in fission may have two downstream elements, Tor kinase for regulation of the response to nitrogen starvation and the other element for regulation of amino acid uptake. Gene expression profile under nitrogen starvation in fission yeast. Type of experiment: Comparing between vegetatively-growing control cells and cells 3 hrs after nitrogen starvation. Experimental factor: Gene expression profile after nitrogen starvation in the rhb1-D4 or rhb1-D8 cells. Quality control steps taken: All experiments were repeated more than twice except for the tsc2D which was previously reported. Keywards: Nitrogen starvation, rhb1-D4, rhb1-D8
2009-09-28 | E-GEOD-14626 | biostudies-arrayexpress
Project description:RNA changes upon glucose starvation
| PRJNA1059633 | ENA
Project description:This RNA-Seq analysis compares gene expression of fission yeast (Schizosaccharomyces pombe) strains prior to phosphate starvation (0 HR) and at various times after phosphate starvation (4, 8, 12, 24, 36, and 48 HR) contrasting to the WT fission yeast S. pombe cells grown in phosphate replete conditions (WT 0HR)
2023-01-19 | GSE213459 | GEO
Project description:The adaptation of tumor cells to metabolic stress is crucial for tumor development. We demonstrate that the translation of NRF2, a master regulator of antioxidant response, is controlled by the OGDH-METTL3 axis in melanoma for glucose starvation adaptation. To elucidate the regulatory mechanism of the OGDH-METTL3 axis during glucose starvation, we conducted co-immunoprecipitation and mass spectrometry analysis to identify the binding partner of OGDH that governs both the OGDH-METTL3 axis and tumor cell adaptation to glucose deprivation.
2025-01-01 | GSE252314 | GEO
Project description:Microorganisms naturally respond to changes in nutritional conditions by adjusting their morphology and physiology. The cellular response of the fission yeast S. pombe to nitrogen starvation has been extensively studied. Here, we report time course metabolomic analysis during one hour immediately after nitrogen starvation, prior to any visible changes in cell morphology except for a tiny increase of cell length per division cycle. We semi-quantitatively measured 75 distinct metabolites, 60% of which changed their level over 2-fold. The most significant changes occurred during the first 15 min, when trehalose, 2-oxoglutarate, and succinate increased, while purine biosynthesis intermediates rapidly diminished. At 30–60 min, free amino acids decreased, although several modified amino acids—including hercynylcysteine sulfoxide, a precursor to ergothioneine—accumulated. Most high-energy metabolites such as ATP, S-adenosyl-methionine or NAD+ remained stable during the whole time course. Very rapid metabolic changes such as the shut-off of purine biosynthesis and the rise of 2-oxoglutarate and succinate can be explained by the depletion of NH4Cl. The changes in the levels of key metabolites, particularly 2-oxoglutarate, might represent an important mechanistic step to trigger subsequent cellular regulations.
2013-11-26 | MTBLS67 | MetaboLights