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α-Synuclein Pathology in PRKN-Linked Parkinson's Disease: New Insights from a Blood-Based Seed Amplification Assay

Annika Kluge, Max Borsche, Linn Streubel-Gallasch, Tuğçe Gül, Susen Schaake, Alexander Balck, Jannik Prasuhn, Philip Campbell, Huw R. Morris, Anthony H. Schapira, Katja Lohmann, Norbert Brüggemann, Aleksandar Rakovic, Philip Seibler, A. Nazlı Başak, Daniela Berg*, Christine Klein*

*Korrespondierende/r Autor/-in für diese Arbeit

Abstract

Pathogenic variants in PRKN cause early-onset Parkinson's disease (PD), while the role of alpha-synuclein in PRKN-PD remains uncertain. One study performed a blood-based alpha-synuclein seed amplification assay (SAA) in PRKN-PD, not detecting seed amplification in 17 PRKN-PD patients. By applying a methodologically different SAA focusing on neuron-derived extracellular vesicles, we demonstrated alpha-synuclein seed amplification in 8 of 13 PRKN-PD patients, challenging the view of PRKN-PD as a non-synucleinopathy. Moreover, we performed blinded replication of the neuron-derived extracellular vesicles-dependent SAA in idiopathic PD patients and healthy controls. In conclusion, blood-based neuron-derived extracellular vesicles-dependent SAA represents a promising biomarker to elucidate the underpinnings of (monogenic) PD. ANN NEUROL 2024;95:1173–1177.

OriginalspracheEnglisch
ZeitschriftAnnals of Neurology
Jahrgang95
Ausgabenummer6
Seiten (von - bis)1173-1177
Seitenumfang5
ISSN0364-5134
DOIs
PublikationsstatusVeröffentlicht - 06.2024

Fördermittel

We thank the participants for generously donating their time and biomaterials. This project was supported by SysMedPD (European Union's Horizon 2020 research and innovation program under grant agreement 668738), Research Unit FOR2488 (DFG), and the EU Joint Programme–Neurodegenerative Disease Research (JPND). Moreover, the study was supported by the Suna and Inan Kıraç Foundation, the Michael J. Fox Foundation (MJFF), and by a grant of the Else Kröner‐Fresenius‐Stiftung (to M.B.).

TrägerTrägernummer
Suna ve İnan Kıraç Vakfı
Else Kröner-Fresenius-Stiftung
EU Joint Programme – Neurodegenerative Disease Research
Deutsche Forschungsgemeinschaft
SysMedPD
Michael J. Fox Foundation for Parkinson's Research
Horizon 2020
Horizon 2020 Framework Programme668738

    UN SDGs

    Dieser Output leistet einen Beitrag zu folgendem(n) Ziel(en) für nachhaltige Entwicklung

    1. SDG 3 – Gesundheit und Wohlergehen
      SDG 3 – Gesundheit und Wohlergehen

    Strategische Forschungsbereiche und Zentren

    • Querschnittsbereich: Medizinische Genetik

    DFG-Fachsystematik

    • 2.23-06 Molekulare und zelluläre Neurologie und Neuropathologie

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