What question did this study set out to answer?

To determine whether soluble amyloid beta oligomers represent an obligate intermediate on the pathway to fibril assembly or arise via a distinct, independent assembly route.

February 7, 2007Journal of Biological ChemistryOpen Access

Small Molecule Inhibitors of Aggregation Indicate That Amyloid β Oligomerization and Fibrillization Pathways Are Independent and Distinct

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Authors

MNMihaela NeculaPetroleum & Gas University of Ploieşti RKRakez KayedUniversity of Stuttgart SMSaskia MiltonUniversity of California, Irvine

Discussion

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Implication

In vitro mechanistic analysis demonstrates separate inhibition of amyloid beta oligomer and fibril formation, indicating that oligomerization is not required for fibrillization.

Key Points

To determine whether soluble amyloid beta oligomers represent an obligate intermediate on the pathway to fibril assembly or arise via a distinct, independent assembly route.
Characterized the mechanism of action of small molecule aggregation inhibitors against amyloid beta assembly.
Evaluated compound efficacy across both oligomer and fibril formation pathways, assessing potency down to substoichiometric and low nanomolar concentrations relative to monomeric amyloid beta.
Small molecule inhibitors segregated into three distinct functional classes: compounds that selectively inhibit oligomerization, compounds that selectively inhibit fibrillization, and compounds that inhibit both processes.
Multiple compounds selectively suppressed oligomerization at substoichiometric concentrations in the low nanomolar range without arresting fibrillization.
Dissociation of inhibitory activity demonstrates that amyloid beta oligomers are not an obligate intermediate required for amyloid fibril formation.

Cite This Study

Necula et al. (2007) studied this question.

synapsesocial.com/papers/6a8824ce580ea41f0158349e https://doi.org/10.1074/jbc.m608207200

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Implication

In vitro mechanistic analysis demonstrates separate inhibition of amyloid beta oligomer and fibril formation, indicating that oligomerization is not required for fibrillization.

Small Molecule Inhibitors of Aggregation Indicate That Amyloid β Oligomerization and Fibrillization Pathways Are Independent and Distinct

Discussion

Member takes

Implication

Key Points

Cite This Study

Small Molecule Inhibitors of Aggregation Indicate That Amyloid β Oligomerization and Fibrillization Pathways Are Independent and Distinct

Discussion

Member takes

Implication

Key Points

Cite This Study

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