Cookies help us deliver our services. By using our services, you agree to our use of cookies. More information

Tripodi 2018 Biochim Biophys Acta Mol Cell Res

From Bioblast
The printable version is no longer supported and may have rendering errors. Please update your browser bookmarks and please use the default browser print function instead.
Publications in the MiPMap
Tripodi F, Castoldi A, Nicastro R, Reghellin V, Lombardi L, Airoldi C, Falletta E, Maffioli E, Scarcia P, Palmieri L, Alberghina L, Agrimi G, Tedeschi G, Coccetti P (2018) Methionine supplementation stimulates mitochondrial respiration. Biochim Biophys Acta Mol Cell Res 1865:1901-13.

Β» PMID: 30290237

Tripodi F, Castoldi A, Nicastro R, Reghellin V, Lombardi L, Airoldi C, Falletta E, Maffioli E, Scarcia P, Palmieri L, Alberghina L, Agrimi G, Tedeschi G, Coccetti P (2018) Biochim Biophys Acta Mol Cell Res

Abstract: Mitochondria play essential metabolic functions in eukaryotes. Although their major role is the generation of energy in the form of ATP, they are also involved in maintenance of cellular redox state, conversion and biosynthesis of metabolites and signal transduction. Most mitochondrial functions are conserved in eukaryotic systems and mitochondrial dysfunctions trigger several human diseases. By using multi-omics approach, we investigate the effect of methionine supplementation on yeast cellular metabolism, considering its role in the regulation of key cellular processes. Methionine supplementation induces an up-regulation of proteins related to mitochondrial functions such as TCA cycle, electron transport chain and respiration, combined with an enhancement of mitochondrial pyruvate uptake and TCA cycle activity. This metabolic signature is more noticeable in cells lacking Snf1/AMPK, the conserved signalling regulator of energy homeostasis. Remarkably, snf1Ξ” cells strongly depend on mitochondrial respiration and suppression of pyruvate transport is detrimental for this mutant in methionine condition, indicating that respiration mostly relies on pyruvate flux into mitochondrial pathways. These data provide new insights into the regulation of mitochondrial metabolism and extends our understanding on the role of methionine in regulating energy signalling pathways. β€’ Keywords: MPC (mitochondrial pyruvate carrier), Metabolomics, S-adenosyl-methionine, Saccharomyces cerevisiae, Shotgun proteomics, Snf1/AMPK β€’ Bioblast editor: Plangger M β€’ O2k-Network Lab: IT Bari Palmieri L


Labels: MiParea: Respiration, Genetic knockout;overexpression, Pharmacology;toxicology 


Organism: Saccharomyces cerevisiae 

Preparation: Isolated mitochondria  Enzyme: Inner mt-membrane transporter, TCA cycle and matrix dehydrogenases  Regulation: Amino acid  Coupling state: LEAK, OXPHOS  Pathway: N, S  HRR: Oxygraph-2k 

2018-11