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  • Undergraduate Student
  • Veterinary
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  • Director of Center
  • Director of Department
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Scientific Fields
Diseases
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Published in Nature communications - 04 Nov 2022

Donnarumma E, Kohlhaas M, Vimont E, Kornobis E, Chaze T, Gianetto QG, Matondo M, Moya-Nilges M, Maack C, Wai T,

Link to Pubmed [PMID] – 36333300

Link to DOI – 10.1038/s41467-022-34316-3

Nat Commun 2022 Nov; 13(1): 6634

Mitochondria are paramount to the metabolism and survival of cardiomyocytes. Here we show that Mitochondrial Fission Process 1 (MTFP1) is an inner mitochondrial membrane (IMM) protein that is dispensable for mitochondrial division yet essential for cardiac structure and function. Constitutive knockout of cardiomyocyte MTFP1 in mice resulted in a fatal, adult-onset dilated cardiomyopathy accompanied by extensive mitochondrial and cardiac remodeling during the transition to heart failure. Prior to the onset of disease, knockout cardiac mitochondria displayed specific IMM defects: futile proton leak dependent upon the adenine nucleotide translocase and an increased sensitivity to the opening of the mitochondrial permeability transition pore, with which MTFP1 physically and genetically interacts. Collectively, our data reveal new functions of MTFP1 in the control of bioenergetic efficiency and cell death sensitivity and define its importance in preventing pathogenic cardiac remodeling.