Article (Scientific journals)
Alpha synuclein determines ferroptosis sensitivity in dopaminergic neurons via modulation of ether-phospholipid membrane composition.
Mahoney-Sanchez, Laura; Bouchaoui, Hind; BOUSSAAD, Ibrahim et al.
2022In Cell Reports, 40 (8), p. 111231
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Keywords :
Dopaminergic Neurons/metabolism; Ferroptosis; Humans; Parkinson Disease/metabolism; Phospholipid Ethers/metabolism; alpha-Synuclein/metabolism; CP: Molecular biology; CP: Neuroscience; Parkinson's disease; alpha synuclein; cell death; ether phospholipids; lipid peroxidation
Abstract :
[en] There is a continued unmet need for treatments that can slow Parkinson's disease progression due to the lack of understanding behind the molecular mechanisms underlying neurodegeneration. Since its discovery, ferroptosis has been implicated in several diseases and represents a therapeutic target in Parkinson's disease. Here, we use two highly relevant human dopaminergic neuronal models to show that endogenous levels of α-synuclein can determine the sensitivity of dopaminergic neurons to ferroptosis. We show that reducing α-synuclein expression in dopaminergic neurons leads to ferroptosis evasion, while elevated α-synuclein expression in patients' small-molecule-derived neuronal precursor cells with SNCA triplication causes an increased vulnerability to lipid peroxidation and ferroptosis. Lipid profiling reveals that ferroptosis resistance is due to a reduction in ether-linked phospholipids, required for ferroptosis, in neurons depleted of α-synuclein (α-syn). These results provide a molecular mechanism linking α-syn levels to the sensitivity of dopaminergic neurons to ferroptosis, suggesting potential therapeutic relevance.
Disciplines :
Neurology
Author, co-author :
Mahoney-Sanchez, Laura
Bouchaoui, Hind
BOUSSAAD, Ibrahim ;  University of Luxembourg > Luxembourg Centre for Systems Biomedicine (LCSB) > Scientific Central Services
Jonneaux, Aurélie
Timmerman, Kelly
Berdeaux, Olivier
Ayton, Scott
KRÜGER, Rejko ;  University of Luxembourg > Luxembourg Centre for Systems Biomedicine (LCSB) > Translational Neuroscience
Duce, James A.
Devos, David
Devedjian, Jean-Christophe
External co-authors :
yes
Language :
English
Title :
Alpha synuclein determines ferroptosis sensitivity in dopaminergic neurons via modulation of ether-phospholipid membrane composition.
Publication date :
23 August 2022
Journal title :
Cell Reports
eISSN :
2211-1247
Publisher :
Elsevier, Amsterdam, Netherlands
Volume :
40
Issue :
8
Pages :
111231
Peer reviewed :
Peer Reviewed verified by ORBi
Focus Area :
Systems Biomedicine
Commentary :
Copyright © 2022 The Author(s). Published by Elsevier Inc. All rights reserved.
Available on ORBilu :
since 16 January 2023

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