Cited by 71Mitochondrial Function and PathologyCardiac Ischemia and ReperfusionATP Synthase and ATPases Research

Molecular nature and regulation of the mitochondrial permeability transition pore(s), drug target(s) in cardioprotection

Carraro, Michela, Carrer, Andrea, Urbani, Andrea, Bernardi, Paolo·2020·Journal of Molecular and Cellular Cardiology

Abstract

The mitochondrial permeability transition, an established mechanism for heart diseases, is a long-standing mystery of mitochondrial biology and a prime drug target for cardioprotection. Several hypotheses about its molecular nature have been put forward over the years, and the prevailing view is that permeabilization of the inner mitochondrial membrane follows opening of a high-conductance channel, the permeability transition pore, which is also called mitochondrial megachannel or multiconductance channel. The permeability transition strictly requires matrix Ca 2+ and is favored by the matrix protein cyclophilin D, which mediates the inhibitory effects of cyclosporin A. Here we provide a review of the field, with specific emphasis on the possible role of the adenine nucleotide translocator and of the F-ATP synthase in channel formation, and on currently available small molecule inhibitors. While the possible mechanisms through which the adenine nucleotide translocator and the F-ATP synthase might form high-conductance channels remain unknown, reconstitution experiments and site-directed mutagenesis combined to electrophysiology have provided important clues. The hypothesis that more than one protein may act as a permeability transition pore provides a reasonable explanation for current controversies in the field, and holds great promise for the solution of the mystery of the permeability transition.

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Crossref · 10.1016/j.yjmcc.2020.05.014

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  • Some combination of mitochondrial proteins (CypD, ANT, ATP synthase, VDAC, PiC, SPG-7) is necessary to fully exhibit the properties of mPTP.

    “The inescapable conclusion from these studies is that some combination of these proteins is necessary to fully exhibit the properties of mPTP [1,18,20,21].”

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Authors
Carraro, M., Carrer, A., Urbani, A., & Bernardi, P.
Affiliations
University of Padua (IT)
Corresponding author
Bernardi, Paolo
Venue
Journal of Molecular and Cellular Cardiology
Publisher
Elsevier BV
Published
2020-07
Volume
144
Pages
76-86
ISSN
0022-2828 (ISSN-L)
OpenAlex
W3028471616
Cited by
71
References
215
Citations by year
2026: 4 · 2025: 10 · 2024: 3 · 2023: 8 · 2022: 11 · 2021: 20 · 2020: 15
FWCI
4.38
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Molecular and Cellular Cardiology (publishedVersion)
  • PubMed (publishedVersion)
  • Padua Research Archive (University of Padova) (submittedVersion)
Funders
  • Fondazione Telethon
  • Ministero dell’Istruzione, dell’Università e della Ricerca
  • Fondation Leducq
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Cardiac Ischemia and Reperfusion
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › ATP Synthase and ATPases Research
Keywords
mitochondrial permeability transition, mitochondrial permeability transition pore, cardioprotection, cyclophilin D, cyclosporine, adenine nucleotide translocase, F-ATP synthase, mitochondrial matrix calcium, small molecule inhibitors, heart disease
MeSH terms
Mitochondrial Permeability Transition Pore, Animals, Cardiotonic Agents, Mitochondria, Heart, Permeability, Protein Binding, Biomarkers, Mice, Knockout, Mitochondrial Proton-Translocating ATPases, Organic Anion Transporters, Mice, Protein Interaction Domains and Motifs, Protein Multimerization, Drug Discovery

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