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Amyloid Fibrils

Amyloid Fibrils

Amyloid fibrils are aggregates of misfolded proteins. Under most circumstances, misfolded proteins are either refolded by chaperone proteins or degraded by the proteasome. However, in the case of a mutation or a disease, these proteins can accumulate to form large clusters and often further assemble to form elongated fibers, called fibrils.
Amyloid deposits were observed as early as 1639 in the liver and the spleen. In 1854, Rudolph Virchow performed iodine staining,...

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Updated: May 22, 2025

Detecting Amyloid-β Accumulation via Immunofluorescent Staining in a Mouse Model of Alzheimer's Disease

Detecting Amyloid-β Accumulation via Immunofluorescent Staining in a Mouse Model of Alzheimer's Disease

Published on: April 19, 2021

Experimental methods for studying amyloid cross-interactions.

Aleksandra Kalitnik¹, Anna Lassota², Oliwia Polańska¹

¹Department of Biomedical Engineering, Faculty of Fundamental Problems of Technology, Wroclaw University of Science and Technology, Wrocław, Poland.

Protein Science : a Publication of the Protein Society

|May 19, 2025

Summary

This summary is machine-generated.

Studying amyloid protein interactions is key to understanding diseases like prion conversion and amyloidosis. Combining multiple experimental methods provides a comprehensive view of these complex cross-interactions.

Keywords:

cross‐interactions cross‐seeding fibril polymorphism high‐resolution microscopy thioflavin T

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Published on: March 16, 2016

Area of Science:

Biochemistry
Molecular Biology
Neuroscience

Background:

Amyloid protein interactions are central to diseases such as prion conversion and systemic amyloidosis.
Understanding these cross-interactions is crucial for elucidating disease mechanisms.

Purpose of the Study:

To review common experimental methods for studying amyloid cross-interactions in vitro and in vivo.
To emphasize the necessity of a hybrid approach for a complete understanding of amyloid cross-interactions.

Main Methods:

Fluorescence-based techniques (e.g., thioflavin T).
High-resolution imaging (e.g., atomic force microscopy, Cryo-EM).
Spectroscopic methods, immuno-electron microscopy, mass spectrometry, and solid-state NMR.

Main Results:

Various methods offer distinct insights into amyloid cross-interactions, affecting self-assembly from acceleration to inhibition.
No single method fully captures the complexity of amyloid cross-interactions.
A combination of techniques is essential for a comprehensive portrayal.

Conclusions:

A hybrid strategy combining fluorescence, high-resolution imaging, and other techniques is necessary to fully characterize amyloid cross-interactions.
This integrated approach is vital for understanding pathogenic pathways involving amyloid proteins.