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Cited by 279

The DOI matches its Crossref record; 32 of the 32 references it cites were found in a registry or an index.

Depressing Mitochondria-Reticulum Interactions Protects Cardiomyocytes From Lethal Hypoxia-Reoxygenation Injury

Paillard, Melanie, Tubbs, Emily, Thiebaut, Pierre-Alain, Gomez, Ludovic, Fauconnier, Jeremy, Crola Da Silva, Claire, Teixeira, Geoffrey, Mewton, Nathan, Belaidi, Elise, Durand, Annie, Abrial, Maryline, Lacampagne, Alain, Rieusset, Jennifer, Ovize, Michel·2013·Circulation

Abstract

Background—: Under physiological conditions, Ca 2+ transfer from the endoplasmic reticulum (ER) to mitochondria might occur at least in part at contact points between the 2 organelles and involves the VDAC1/Grp75/IP3R1 complex. Accumulation of Ca 2+ into the mitochondrial matrix may activate the mitochondrial chaperone cyclophilin D (CypD) and trigger permeability transition pore opening, whose role in ischemia/reperfusion injury is well recognized. We questioned here whether the transfer of Ca 2+ from ER to mitochondria might play a role in cardiomyocyte death after hypoxia-reoxygenation. Methods and Results—: We report that CypD interacts with the VDAC1/Grp75/IP3R1 complex in cardiomyocytes. Genetic or pharmacological inhibition of CypD in both H9c2 cardiomyoblasts and adult cardiomyocytes decreased the Ca 2+ transfer from ER to mitochondria through IP3R under normoxic conditions. During hypoxia-reoxygenation, the interaction between CypD and the IP3R1 Ca 2+ channeling complex increased concomitantly with mitochondrial Ca 2+ content. Inhibition of either CypD, IP3R1, or Grp75 decreased protein interaction within the complex, attenuated mitochondrial Ca 2+ overload, and protected cells from hypoxia-reoxygenation. Genetic or pharmacological inhibition of CypD provided a similar effect in adult mice cardiomyocytes. Disruption of ER-mitochondria interaction via the downregulation of Mfn2 similarly reduced the interaction between CypD and the IP3R1 complex and protected against hypoxia-reoxygenation injury. Conclusions—: Our data (1) point to a new role of CypD at the ER-mitochondria interface and (2) suggest that decreasing ER-mitochondria interaction at reperfusion can protect cardiomyocytes against lethal reperfusion injury through the reduction of mitochondrial Ca 2+ overload via the CypD/VDAC1/Grp75/IP3R1 complex.

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Metadata

Authors
Paillard, M., Tubbs, E., Thiebaut, P.-A., Gomez, L., Fauconnier, J., Crola Da Silva, C., Teixeira, G., Mewton, N., Belaidi, E., Durand, A., Abrial, M., Lacampagne, A., Rieusset, J., & Ovize, M.
Venue
Circulation
Published
2013-10
Volume
128
Issue
14
Pages
1555-1565
ISSN
  • 0009-7322 (ISSN-L)
  • 1524-4539
OpenAlex
W1996146434
Cited by
279
References
32
FWCI
11.56
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Depressing Mitochondria-Reticulum Interactions Protects Cardiomyocytes From Lethal Hypoxia-Reoxygenation Injury. https://app.cochat.ai/papers/10.1161/circulationaha.113.001225
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Paillard, M., Tubbs, E., Thiebaut, P.-A., Gomez, L., Fauconnier, J., Crola Da Silva, C., Teixeira, G., Mewton, N., Belaidi, E., Durand, A., Abrial, M., Lacampagne, A., Rieusset, J., & Ovize, M. (2013). Depressing Mitochondria-Reticulum Interactions Protects Cardiomyocytes From Lethal Hypoxia-Reoxygenation Injury. Circulation. https://doi.org/10.1161/circulationaha.113.001225

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