Related Experiment Videos
Dysfunction of Cellular Proteostasis in Parkinson's Disease
Šárka Lehtonen1,2, Tuuli-Maria Sonninen1, Sara Wojciechowski1
1A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland.
Frontiers in Neuroscience
|May 29, 2019
Summary
Parkinson's disease (PD) treatments fail to stop disease progression. Targeting cellular proteostasis and the unfolded protein response (UPR) offers new therapeutic strategies to combat protein aggregation and neurodegeneration in PD.
Area of Science:
- Neuroscience
- Cell Biology
- Biochemistry
Background:
- Current Parkinson's disease (PD) therapies do not halt disease progression.
- Cellular proteostasis (protein homeostasis) is crucial for neuronal function and is impaired in neurodegenerative diseases like PD.
- Deficits in protein degradation pathways, such as the proteasome and autophagy, contribute to toxic protein aggregate accumulation, notably alpha-synuclein (α-SYN) in PD.
Purpose of the Study:
- To review the relationship between protein aggregation and imbalanced proteostasis in Parkinson's disease.
- To discuss emerging strategies for disease modification by targeting proteostasis pathways.
- To explore the role of endoplasmic reticulum (ER) stress and the unfolded protein response (UPR) in PD pathogenesis and potential therapeutic interventions.
Main Methods:
- Literature review and synthesis of current research on proteostasis, protein aggregation, and PD.
- Analysis of the mechanisms underlying ER stress and UPR activation in the context of PD.
- Discussion of potential therapeutic targets within proteostasis and UPR pathways.
Main Results:
- Imbalanced proteostasis, including impaired autophagy and ER stress, is a key feature of Parkinson's disease.
- Alpha-synuclein aggregation is linked to proteostasis deficits.
- Modulating molecular chaperones and the ER UPR pathway shows promise for disease modification.
Conclusions:
- Targeting cellular proteostasis mechanisms, particularly autophagy and the ER UPR pathway, represents a promising avenue for developing disease-modifying treatments for Parkinson's disease.
- Interventions aimed at restoring protein homeostasis and reducing toxic protein aggregation could ameliorate PD pathology and prevent dopaminergic neuron degeneration.