PXD035798

PXD035798 is an original dataset announced via ProteomeXchange.

Title	Chronic stress targets mitochondrial respiratory efficiency in the skeletal muscle of C57BL/6 mice.
Description	Episodes of chronic stress can result in psychic disorders like post-traumatic stress disorder, but also promote the development of metabolic syndrome and type 2 diabetes. We hypothesize that muscle, as main regulator of whole-body energy expenditure, is a central target of acute and adaptive molecular efects of stress in this context. Here, we investigate the immediate efect of a stress period on energy metabolism in Musculus gastrocnemius in our established C57BL/6 chronic variable stress (Cvs) mouse model. Cvs decreased lean body mass despite increased energy intake, reduced circadian energy expenditure (EE), and substrate utilization. Cvs altered the proteome of metabolic components but not of the oxidative phosphorylation system (OXPHOS), or other mitochondrial structural components. Functionally, Cvs impaired the electron transport chain (ETC) capacity of complex I and complex II, and reduces respiratory capacity of the ETC from complex I to ATP synthase. Complex I-OXPHOS correlated to diurnal EE and complex II-maximal uncoupled respiration correlated to diurnal and reduced nocturnal EE. Bioenergetics assessment revealed higher optimal thermodynamic efciencies (ƞ-opt) of mitochondria via complex II after Cvs. Interestingly, transcriptome and methylome were unafected by Cvs, thus excluding major contributions to supposed metabolic adaptation processes. In summary, the preclinical Cvs model shows that metabolic pressure by Cvs is initially compensated by adaptation of mitochondria function associated with high thermodynamic efciency and decreased EE to manage the energy balance. This counter-regulation of mitochondrial complex II may be the driving force to longitudinal metabolic changes of muscle physiological adaptation as the basis of stress memory.
HostingRepository	PRIDE
AnnounceDate	2023-11-14
AnnouncementXML	Submission_2023-11-14_08:44:29.303.xml
DigitalObjectIdentifier
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Unsupported dataset by repository
PrimarySubmitter	Birgit Knebel
SpeciesList	scientific name: Mus musculus (Mouse); NCBI TaxID: 10090;
ModificationList	No PTMs are included in the dataset
Instrument	Orbitrap Fusion Lumos

Revision	Datetime	Status	ChangeLog Entry
0	2022-08-04 07:48:13	ID requested
⏵ 1	2023-11-14 08:44:30	announced

Nikolic A, Fahlbusch P, Wahlers N, Riffelmann NK, Jacob S, Hartwig S, Kettel U, Dille M, Al-Hasani H, Kotzka J, Knebel B, Chronic stress targets mitochondrial respiratory efficiency in the skeletal muscle of C57BL/6 mice. Cell Mol Life Sci, 80(4):108(2023) [pubmed]

submitter keyword: chronic variable stress,mouse, gastrocnemius muscle, isolated mitochondria, mitochondrial function

Birgit Knebel
contact affiliation	Institute for Clinical Biochemistry and Pathobiochemistry, German Diabetes center (DDZ), Leibniz Center for Diabetes Research at the Heinrich-Heine University Duesseldorf, Germany
contact email	birgit.knebel@ddz.de
lab head
Birgit Knebel
contact affiliation	Institute for Clinical Biochemistry and Pathobiochemistry German Diabetes Center (DDZ) Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf
contact email	birgit.knebel@ddz.de
dataset submitter

Dataset FTP location NOTE: Most web browsers have now discontinued native support for FTP access within the browser window. But you can usually install another FTP app (we recommend FileZilla) and configure your browser to launch the external application when you click on this FTP link. Or otherwise, launch an app that supports FTP (like FileZilla) and use this address: ftp://ftp.pride.ebi.ac.uk/pride/data/archive/2023/03/PXD035798

PRIDE project URI

• PRIDE
  1. PXD035798
     1. Label: PRIDE project
     2. Name: Chronic stress targets mitochondrial respiratory efficiency in the skeletal muscle of C57BL/6 mice.