Synaptic dysfunction and extracellular matrix dysregulation in dopaminergic neurons from sporadic and E326K-GBA1 Parkinson’s disease patients

Rosh I, Tripathi U, Hussein Y, Rike WA, Djamus J, Shklyar B, Manole A, Houlden H, Winkler J, Gage FH, Stern S (2024)

Publication Type: Journal article

Publication year: 2024

Journal

npj Parkinson’s Disease Nature Publishing Group

Book Volume: 10

Article Number: 38

Journal Issue: 1

DOI: 10.1038/s41531-024-00653-x

Abstract

Parkinson’s disease (PD) is a neurodegenerative disease with both genetic and sporadic origins. In this study, we investigated the electrophysiological properties, synaptic activity, and gene expression differences in dopaminergic (DA) neurons derived from induced pluripotent stem cells (iPSCs) of healthy controls, sporadic PD (sPD) patients, and PD patients with E326K-GBA1 mutations. Our results demonstrate reduced sodium currents and synaptic activity in DA neurons derived from PD patients with E326K-GBA1 mutations, suggesting a potential contribution to PD pathophysiology. We also observed distinct electrophysiological alterations in sPD DA neurons, which included a decrease in synaptic currents. RNA sequencing analysis revealed unique dysregulated pathways in sPD neurons and E326K-GBA1 neurons, further supporting the notion that molecular mechanisms driving PD may differ between PD patients. In agreement with our previous reports, Extracellular matrix and Focal adhesion pathways were among the top dysregulated pathways in DA neurons from sPD patients and from patients with E326K-GBA1 mutations. Overall, our study further confirms that impaired synaptic activity is a convergent functional phenotype in DA neurons derived from PD patients across multiple genetic mutations as well as sPD. At the transcriptome level, we find that the brain extracellular matrix is highly involved in PD pathology across multiple PD-associated mutations as well as sPD.

Authors with CRIS profile

Jürgen Winkler Professur für Molekulare Neurologie

Involved external institutions

University of Haifa / אוניברסיטת חיפה IL Israel (IL) Salk Institute for Biological Studies US United States (USA) (US) University College London (UCL) GB United Kingdom (GB)

How to cite

APA:

Rosh, I., Tripathi, U., Hussein, Y., Rike, W.A., Djamus, J., Shklyar, B.,... Stern, S. (2024). Synaptic dysfunction and extracellular matrix dysregulation in dopaminergic neurons from sporadic and E326K-GBA1 Parkinson’s disease patients. npj Parkinson’s Disease, 10(1). https://doi.org/10.1038/s41531-024-00653-x

MLA:

Rosh, Idan, et al. "Synaptic dysfunction and extracellular matrix dysregulation in dopaminergic neurons from sporadic and E326K-GBA1 Parkinson’s disease patients." npj Parkinson’s Disease 10.1 (2024).

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