Related Experiment Video

Updated: Sep 6, 2025

Quantitative Immunofluorescence Assay to Measure the Variation in Protein Levels at Centrosomes
09:39

Quantitative Immunofluorescence Assay to Measure the Variation in Protein Levels at Centrosomes

Published on: December 20, 2014

15.4K

The LRRK2 signaling network converges on a centriolar phospho-Rab10/RILPL1 complex to cause deficits in centrosome

Antonio Jesús Lara Ordóñez1, Rachel Fasiczka2, Belén Fernández1

  • 1Department of Molecular Biology, Institute of Parasitology and Biomedicine "López-Neyra", Consejo Superior de Investigaciones Científicas (CSIC), 18016 Granada, Spain.

Biology Open
|July 1, 2022
PubMed

Insights

Parkinson

Area of Science:

  • Cell Biology
  • Molecular Biology
  • Neuroscience

Background:

  • The leucine-rich repeat kinase 2 (LRRK2) gene is associated with Parkinson's disease.
  • LRRK2 phosphorylates Rab GTPases, affecting cellular functions.
  • Dysregulation of LRRK2 signaling is implicated in neurodegenerative processes.

Purpose of the Study:

  • To investigate the role of LRRK2-mediated phosphorylation of Rab GTPases in centrosome cohesion and ciliogenesis.
  • To identify the molecular mechanisms linking LRRK2 signaling to centrosomal deficits.
  • To explore the impact of these deficits on cell polarization.

Main Methods:

  • In vitro and in vivo assays to study ciliogenesis and centrosome cohesion.
  • Analysis of protein-protein interactions between LRRK2, Rab GTPases, and RILPL proteins.
  • Cell polarization assays (scratch wound assays) and LRRK2 kinase inhibition.

Main Results:

  • Phosphorylation of Rab10 by LRRK2 enhances its binding to RILPL1, blocking ciliogenesis.
  • This interaction also disrupts centrosome cohesion in dividing cells.
  • LRRK2 pathway regulators converge on centrosomal deficits, impairing cell polarization.

Conclusions:

  • Enhanced LRRK2 kinase activity leads to centrosomal deficits via Rab10 phosphorylation and RILPL1 interaction.
  • These deficits disrupt essential cellular processes like ciliogenesis and cell polarization.
  • Targeting LRRK2 kinase activity may offer therapeutic potential for Parkinson's disease-related cellular dysfunction.
Keywords:
CentrosomeLRRK2PPM1HRILPL1Rab GTPaseVps35

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