Aggregation Mechanisms and Molecular Structures of Amyloid‐β in Alzheimer's Disease

Abstract: Amyloid plaques are a major pathological hallmark involved in Alzheimer's disease and consist of deposits of the amyloid‐β peptide (Aβ). The aggregation process of Aβ is highly complex, which leads to polymorphous aggregates with different structures. In addition to aberrant aggregation, Aβ oligomers can undergo liquid‐liquid phase separation (LLPS) and form dynamic condensates. It has been hypothesized that these amyloid liquid droplets affect and modulate amyloid fibril formation. In this review, we briefly introduce the relationship between stress granules and amyloid protein aggregation that is associated with neurodegenerative diseases. Then we highlight the regulatory role of LLPS in Aβ aggregation and discuss the potential relationship between Aβ phase transition and aggregation. Furthermore, we summarize the current structures of Aβ oligomers and amyloid fibrils, which have been determined using nuclear magnetic resonance (NMR) and cryo‐electron microscopy (cryo‐EM). The structural variations of Aβ aggregates provide an explanation for the different levels of toxicity, shed light on the aggregation mechanism and may pave the way towards structure‐based drug design for both clinical diagnosis and treatment.

Location
Deutsche Nationalbibliothek Frankfurt am Main
Extent
Online-Ressource
Language
Englisch

Bibliographic citation
Aggregation Mechanisms and Molecular Structures of Amyloid‐β in Alzheimer's Disease ; day:02 ; month:08 ; year:2024 ; extent:15
Chemistry - a European journal ; (02.08.2024) (gesamt 15)

Creator
Niu, Zheng
Gui, Xinrui
Feng, Shuang
Reif, Bernd

DOI
10.1002/chem.202400277
URN
urn:nbn:de:101:1-2408031407200.710109334726
Rights
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Last update
14.08.2025, 10:53 AM CEST

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