PXD028516 is an
original dataset announced via ProteomeXchange.
Dataset Summary
Title | importance of MTFP1 for mitochondrial function in the heart |
Description | Mitochondria are paramount to the metabolism and survival of cardiomyocytes. Here we show that Mitochondrial Fission Process 1 (MTFP1) is essential for cardiac structure and function. Constitutive knockout of cardiomyocyte MTFP1 in mice resulted in adult-onset dilated cardiomyopathy (DCM) characterized by sterile inflammation and cardiac fibrosis that progressed to heart failure and middle-aged death. Failing hearts from cardiomyocyte-restricted knockout mice displayed a general decline in mitochondrial gene expression and oxidative phosphorylation (OXPHOS) activity. Pre-DCM, we observed no defects in mitochondrial morphology, content, gene expression, OXPHOS assembly nor phosphorylation dependent respiration. However, knockout cardiac mitochondria displayed reduced membrane potential and increased non-phosphorylation dependent respiration, which could be rescued by pharmacological inhibition of the adenine nucleotide translocase ANT. Primary cardiomyocytes from pre-symptomatic knockout mice exhibited normal excitation-contraction coupling but increased sensitivity to programmed cell death (PCD), which was accompanied by an opening of the mitochondrial permeability transition pore (mPTP). Intriguingly, mouse embryonic fibroblasts deleted for Mtfp1 recapitulated PCD sensitivity and mPTP opening, both of which could be rescued by pharmacological or genetic inhibition of the mPTP regulator Cyclophilin D. Collectively, our data demonstrate that contrary to previous in vitro studies, the loss of the MTFP1 promotes mitochondrial uncoupling and increases cell death sensitivity, causally mediating pathogenic cardiac remodeling |
HostingRepository | PRIDE |
AnnounceDate | 2022-10-06 |
AnnouncementXML | Submission_2022-10-06_10:21:31.443.xml |
DigitalObjectIdentifier | |
ReviewLevel | Peer-reviewed dataset |
DatasetOrigin | Original dataset |
RepositorySupport | Unsupported dataset by repository |
PrimarySubmitter | thibault chaze |
SpeciesList | scientific name: Mus musculus (Mouse); NCBI TaxID: 10090; |
ModificationList | No PTMs are included in the dataset |
Instrument | Q Exactive |
Dataset History
Revision | Datetime | Status | ChangeLog Entry |
0 | 2021-09-16 02:56:10 | ID requested | |
⏵ 1 | 2022-10-06 10:21:31 | announced | |
Publication List
Dataset with its publication pending |
Keyword List
submitter keyword: mouse, heart, mitochondria |
Contact List
Mariette matondo |
contact affiliation | Institut Pasteur 25 Rue du Docteur Roux Paris 75015 |
contact email | mariette.matondo@pasteur.fr |
lab head | |
thibault chaze |
contact affiliation | Institut Pasteur |
contact email | thibault.chaze@pasteur.fr |
dataset submitter | |
Full Dataset Link List
Dataset FTP location
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PRIDE project URI |
Repository Record List
[ + ]
[ - ]
- PRIDE
- PXD028516
- Label: PRIDE project
- Name: importance of MTFP1 for mitochondrial function in the heart