Micro-and mesoscale aspects of neurodegeneration in engineered human neural networks carrying the LRRK2 G2019S mutation

Autor: Vibeke Devold Valderhaug, Ola Huse Ramstad, Rosanne van de Wijdeven, Kristine Heiney, Stefano Nichele, Axel Sandvig, Ioanna Sandvig
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Frontiers in Cellular Neuroscience, Vol 18 (2024)
Druh dokumentu: article
ISSN: 1662-5102
DOI: 10.3389/fncel.2024.1366098
Popis: Mutations in the leucine-rich repeat kinase 2 (LRRK2) gene have been widely linked to Parkinson’s disease, where the G2019S variant has been shown to contribute uniquely to both familial and sporadic forms of the disease. LRRK2-related mutations have been extensively studied, yet the wide variety of cellular and network events related to these mutations remain poorly understood. The advancement and availability of tools for neural engineering now enable modeling of selected pathological aspects of neurodegenerative disease in human neural networks in vitro. Our study revealed distinct pathology associated dynamics in engineered human cortical neural networks carrying the LRRK2 G2019S mutation compared to healthy isogenic control neural networks. The neurons carrying the LRRK2 G2019S mutation self-organized into networks with aberrant morphology and mitochondrial dynamics, affecting emerging structure–function relationships both at the micro-and mesoscale. Taken together, the findings of our study points toward an overall heightened metabolic demand in networks carrying the LRRK2 G2019S mutation, as well as a resilience to change in response to perturbation, compared to healthy isogenic controls.
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