Related Experiment Video

Updated: Oct 29, 2025

Rab10 Phosphorylation Detection by LRRK2 Activity Using SDS-PAGE with a Phosphate-binding Tag
08:55

Rab10 Phosphorylation Detection by LRRK2 Activity Using SDS-PAGE with a Phosphate-binding Tag

Published on: December 14, 2017

15.6K

Multiple Pathways of LRRK2-G2019S/Rab10 Interaction in Dopaminergic Neurons

Alison Fellgett1, C Adam Middleton1, Jack Munns1

  • 1Department of Biology, University of York, York, UK.

Journal of Parkinson'S Disease
|July 12, 2021
PubMed
Abstract

Insights

Rab10 is implicated in some Parkinson's disease-related deficits caused by LRRK2 mutations in Drosophila dopaminergic neurons. This suggests Rab protein variations may influence neurodegeneration susceptibility in Parkinson's disease patients.

Area of Science:

  • Neuroscience
  • Genetics
  • Cell Biology

Background:

  • Mutations in Leucine-Rich Repeat Kinase 2 (LRRK2) are a common genetic cause of Parkinson's disease (PD).
  • The precise mechanisms linking increased LRRK2 kinase activity to PD pathology are not fully understood.
  • In vitro studies suggest LRRK2 phosphorylates Rab proteins, hinting at a potential role for these proteins in PD pathogenesis.

Purpose of the Study:

  • To investigate the necessity of Rab10 in LRRK2-G2019S-induced pathophysiological changes.
  • To examine LRRK2's effects on movement, vision, circadian activity, and memory, systems modulated by dopaminergic neurons.

Main Methods:

  • Expressed LRRK2-G2019S in Drosophila dopaminergic neurons.
  • Assessed the impact of Rab10 depletion on fly behavior, including proboscis extension, retinal neurophysiology, circadian rhythms, and courtship memory in aged flies.

Main Results:

  • Rab10 loss-of-function ameliorated LRRK2-G2019S-induced motor and visual deficits.
  • Rab10 depletion did not rescue the sleep phenotype associated with LRRK2-G2019S.
  • While LRRK2 did not affect courtship memory, Rab10 depletion significantly improved it.

Conclusions:

  • Rab10 plays a role in specific LRRK2-induced behavioral deficits in Drosophila dopaminergic neurons.
  • These findings suggest that Rab protein expression variability might contribute to the differential vulnerability of dopaminergic neurons in Parkinson's disease.
Keywords:
BradykinesiaDrosophilaLeucine-rich-repeat-kinase2circadian rhythmscourtship memorydopaminesleepvision

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