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Related Experiment Video

Updated: Mar 12, 2026

Investigating the Spreading and Toxicity of Prion-like Proteins Using the Metazoan Model Organism C. elegans

Investigating the Spreading and Toxicity of Prion-like Proteins Using the Metazoan Model Organism C. elegans

Published on: January 8, 2015

Cellular Models for the Study of Prions.

Brandon B Holmes^1,2, Marc I Diamond²

¹Medical Scientist Training Program, Washington University School of Medicine, St. Louis, Missouri 63110.

Cold Spring Harbor Perspectives in Medicine

|November 6, 2016

Summary

Researchers developed cellular biosensors to study prion-like behavior of neurodegenerative disease proteins like tau. These tools quantify protein seeding and transmission, offering new insights into diseases such as Alzheimer's.

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Protein Misfolding Cyclic Amplification of Prions

Protein Misfolding Cyclic Amplification of Prions

Published on: November 7, 2012

Area of Science:

Neuroscience
Biochemistry
Cell Biology

Background:

Amyloid proteins like tau and alpha-synuclein, implicated in neurodegenerative diseases, exhibit prion-like characteristics.
Prions are known for their ability to transmit cellular pathology in vivo.

Purpose of the Study:

To develop and utilize cellular biosensors for studying prion activity of neurodegenerative disease proteins.
To gain mechanistic insights into prion transmission and neurodegenerative disease progression.

Main Methods:

Development of genetically engineered cellular bioassays with quantitative fluorescence detection.
Measurement of tau seed binding and uptake into cultured cells.
Quantification of prion seeding activity in brain samples.
Propagation of tau prion strains in cell culture models.

Main Results:

Demonstrated the utility of cellular biosensors in measuring key features of prion activity.
Successfully quantified tau seed interactions with cells and seeding activity in brain tissue.
Established cell models capable of indefinitely propagating tau prion strains.

Conclusions:

Cellular biosensors provide a powerful tool for studying the mechanisms of prion transmission.
These biosensors facilitate a reductionist approach to understanding complex neurodegenerative diseases.
The developed assays enable quantitative analysis of prion-like protein behavior in vitro and in vivo.