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Published on: March 31, 2023
LRRK2 at the interface of autophagosomes, endosomes and lysosomes
Dorien A Roosen1,2, Mark R Cookson3
1Cell Biology and Gene Expression Section, Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bldg. 35, 35 Convent Drive, Bethesda, MD, 20892-3707, USA.
Abstract:
Over the past 20 years, substantial progress has been made in identifying the underlying genetics of Parkinson's disease (PD). Of the known genes, LRRK2 is a major genetic contributor to PD. However, the exact function of LRRK2 remains to be elucidated. In this review, we discuss how familial forms of PD have led us to hypothesize that alterations in endomembrane trafficking play a role in the pathobiology of PD. We will discuss the major observations that have been made to elucidate the role of LRRK2 in particular, including LRRK2 animal models and high-throughput proteomics approaches. Taken together, these studies strongly support a role of LRRK2 in vesicular dynamics. We also propose that targeting these pathways may not only be beneficial for developing therapeutics for LRRK2-driven PD, but also for other familial and sporadic cases.
Insights
Genetic mutations in LRRK2 are a significant cause of Parkinson's disease (PD). Research suggests LRRK2 influences vesicular dynamics, offering potential therapeutic targets for PD.
Area of Science:
- Neurogenetics
- Cellular Biology
- Molecular Medicine
Background:
- Parkinson's disease (PD) genetics research has identified LRRK2 as a major contributor.
- The precise function of LRRK2 in PD pathogenesis remains unclear.
- Familial PD cases suggest a role for endomembrane trafficking in disease development.
Purpose of the Study:
- To review the role of LRRK2 in Parkinson's disease.
- To explore the connection between LRRK2, endomembrane trafficking, and vesicular dynamics.
- To identify potential therapeutic strategies targeting LRRK2 pathways.
Main Methods:
- Review of existing literature on LRRK2 genetics and PD.
- Analysis of findings from LRRK2 animal models.
- Examination of high-throughput proteomics data.
Main Results:
- Studies strongly implicate LRRK2 in regulating vesicular dynamics.
- Alterations in endomembrane trafficking are hypothesized to be central to PD pathobiology.
- LRRK2's function is closely linked to cellular transport mechanisms.
Conclusions:
- LRRK2 plays a critical role in vesicular dynamics, impacting Parkinson's disease.
- Targeting LRRK2-associated pathways may offer therapeutic benefits for various PD forms.
- Understanding LRRK2's function is key to developing novel PD treatments.
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