Pharmacological Inhibition of Epac1 Averts Ferroptosis Cell Death by Preserving Mitochondrial Integrity

Nshunge Musheshe*, Asmaa Oun, Angélica María Sabogal-Guáqueta, Marina Trombetta-Lima, Sarah C Mitchel, Ahmed Adzemovic, Oliver Speek, Francesca Morra, Christina H J T van der Veen, Frank Lezoualc'h, Xiaodong Cheng, Martina Schmidt, Amalia M Dolga*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

Exchange proteins directly activated by cAMP (Epac) proteins are implicated in a wide range of cellular functions including oxidative stress and cell survival. Mitochondrial-dependent oxidative stress has been associated with progressive neuronal death underlying the pathology of many neurodegenerative diseases. The role of Epac modulation in neuronal cells in relation to cell survival and death, as well as its potential effect on mitochondrial function, is not well established. In immortalized hippocampal (HT-22) neuronal cells, we examined mitochondria function in the presence of various Epac pharmacological modulators in response to oxidative stress due to ferroptosis. Our study revealed that selective pharmacological modulation of Epac1 or Epac2 isoforms, exerted differential effects in erastin-induced ferroptosis conditions in HT-22 cells. Epac1 inhibition prevented cell death and loss of mitochondrial integrity induced by ferroptosis, while Epac2 inhibition had limited effects. Our data suggest Epac1 as a plausible therapeutic target for preventing ferroptosis cell death associated with neurodegenerative diseases.

Original languageEnglish
Article number314
Number of pages20
JournalAntioxidants (Basel, Switzerland)
Volume11
Issue number2
DOIs
Publication statusPublished - 4-Feb-2022

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