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Related Experiment Video

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A Method to Study α-Synuclein Toxicity and Aggregation Using a Humanized Yeast Model

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Published on: November 25, 2022

Cyclized NDGA modifies dynamic α-synuclein monomers preventing aggregation and toxicity.

Malcolm J Daniels¹, J Brucker Nourse², Hanna Kim²

¹Pharmacology Graduate Group, Raymond and Ruth Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA.

Scientific Reports

|March 1, 2019

Summary

Novel nordihydroguaiaretic acid (NDGA) analogs prevent toxic α-synuclein aggregation, a key process in Parkinson's disease (PD). These compounds stabilize non-aggregating protein forms, offering a potential therapeutic strategy for PD and related neurodegenerative disorders.

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Generation of Alpha-Synuclein Preformed Fibrils from Monomers and Use In Vivo

Generation of Alpha-Synuclein Preformed Fibrils from Monomers and Use In Vivo

Published on: June 2, 2019

Area of Science:

Neuroscience
Biochemistry
Pharmacology

Background:

α-synuclein aggregation is a central mechanism in Parkinson's disease (PD) pathogenesis.
Inhibiting this aggregation is a key therapeutic goal for PD and related disorders.

Purpose of the Study:

To explore the molecular mechanisms by which novel nordihydroguaiaretic acid (NDGA) analogs inhibit α-synuclein aggregation.
To assess the therapeutic potential of NDGA analogs in a model of Parkinson's disease.

Main Methods:

Biochemical and biophysical assays to study α-synuclein aggregation.
In vitro studies using NDGA analogs and α-synuclein.
Neurodegeneration assays in Caenorhabditis elegans.

Main Results:

NDGA analogs induced compaction of monomeric α-synuclein, preventing amyloid fibril formation.
Oxidation-dependent cyclization of NDGA was crucial for its interaction with α-synuclein.
NDGA-pretreated α-synuclein resisted aggregation and inhibited aggregation of untreated α-synuclein.
Cyclized NDGA reduced α-synuclein-induced neurodegeneration in C. elegans.

Conclusions:

NDGA analogs stabilize aggregation-resistant α-synuclein monomers.
These compounds preserve functional α-synuclein conformations.
NDGA analogs represent a promising platform for developing novel Parkinson's disease therapies.