Abstract
LRRK2 mutations are associated with the loss of neurons, that is to say toxicity, in patients and in experimental model systems. However, the mechanisms by which mutations can be linked to neurodegeneration are not fully defined. Here I will argue that mechanism in this context encompasses a variety of levels of information. Mutations or alterations in gene expression at a genetic level are one set of mechanisms that are reflected at the biochemical level likely in enhanced or persistent function of LRRK2. By impacting cellular pathways, prominently including changes in autophagy but also microtubule function, mitochondria and protein synthesis, in neurons and immune cells, the LRRK2 brain is primed for neurodegeneration in an age-dependent manner. These concepts have implications for not only modeling LRRK2 disease but also perhaps for Parkinson’s disease more generally, including the development of therapeutic modalities.
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Abbreviations
- BAC:
-
Bacterial artificial chromosome
- COR:
-
C-terminal of ROC
- GWAS:
-
Genome-wide association study
- LRRK2:
-
Leucine-rich repeat kinase 2
- MAPT:
-
Microtubule-associated protein tau
- PD:
-
Parkinson’s disease
- ROC:
-
Ras of complex proteins
- SNP:
-
Single-nucleotide polymorphism
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Acknowledgments
This research was supported entirely by the Intramural Research Program of the NIH and the National Institute on Aging.
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Cookson, M.R. (2017). Mechanisms of Mutant LRRK2 Neurodegeneration. In: Rideout, H. (eds) Leucine-Rich Repeat Kinase 2 (LRRK2). Advances in Neurobiology, vol 14. Springer, Cham. https://doi.org/10.1007/978-3-319-49969-7_12
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