Loss of VPS13C function in autosomal-recessive Parkinsonism causes mitochondrial dysfunction and increases PINK1/parkin-dependent mitophagy

Suzanne Lesage, Valérie Drouet, Elisa Majounie, Vincent Deramecourt, Maxime Jacoupy, Aude Nicolas, Florence Cormier-Dequaire, Sidi Mohamed Hassoun, Claire Pujol, Sorana Ciura, Zoi Erpapazoglou, Tatiana Usenko, Claude-Alain Maurage, Mourad Sahbatou, Stefan Liebau, Jinhui Ding, Basar Bilgic, Murat Emre, Nihan Erginel-Unaltuna, Gamze GuvenFrançois Tison, Christine Tranchant, Marie Vidailhet, Jean-Christophe Corvol, Paul Krack, Anne-Louise Leutenegger, Michael A. Nalls, Dena G. Hernandez, Peter Heutink, J. Raphael Gibbs, John Hardy, Nicholas W. Wood, Thomas Gasser, Alexandra Durr, Jean-François Deleuze, Meriem Tazir, Alain Destée, Ebba Lohmann, Edor Kabashi, Andrew Singleton, Olga Corti, Alexis Brice, Karen Morrison

Research output: Contribution to journalArticlepeer-review

143 Citations (Scopus)

Abstract

Autosomal-recessive early-onset parkinsonism is clinically and genetically heterogeneous. The genetic causes of approximately 50% of autosomal-recessive early-onset forms of Parkinson disease (PD) remain to be elucidated. Homozygozity mapping and exome sequencing in 62 isolated individuals with early-onset parkinsonism and confirmed consanguinity followed by data mining in the exomes of 1,348 PD-affected individuals identified, in three isolated subjects, homozygous or compound heterozygous truncating mutations in vacuolar protein sorting 13C (VPS13C). VPS13C mutations are associated with a distinct form of early-onset parkinsonism characterized by rapid and severe disease progression and early cognitive decline; the pathological features were striking and reminiscent of diffuse Lewy body disease. In cell models, VPS13C partly localized to the outer membrane of mitochondria. Silencing of VPS13C was associated with lower mitochondrial membrane potential, mitochondrial fragmentation, increased respiration rates, exacerbated PINK1/Parkin-dependent mitophagy, and transcriptional upregulation of PARK2 in response to mitochondrial damage. This work suggests that loss of function of VPS13C is a cause of autosomal-recessive early-onset parkinsonism with a distinctive phenotype of rapid and severe progression.
Original languageEnglish
Pages (from-to)500-513
Number of pages14
JournalThe American Journal of Human Genetics
Volume98
Issue number3
DOIs
Publication statusPublished - 03 Mar 2016

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