Dataset Information

Real-Time BODIPY-Binding Assay To Screen Inhibitors of the Early Oligomerization Process of A?1-42 Peptide.

ABSTRACT: Misfolding and aggregation of amyloid ?1-42 peptide (A?1-42) play a central role in the pathogenesis of Alzheimer's disease (AD). Targeting the highly cytotoxic oligomeric species formed during the early stages of the aggregation process represents a promising therapeutic strategy to reduce the toxicity associated with A?1-42. Currently, the thioflavin?T (ThT) assay is the only established spectrofluorometric method to screen aggregation inhibitors. The success of the ThT assay is that it can detect A?1-42 aggregates with high ?-sheet content, such as protofibrils or fibrils, which appear in the late aggregation steps. Unfortunately, by using the ThT assay, the detection of inhibitors of early soluble oligomers that present a low ?-sheet character is challenging. Herein, a new, facile, and robust boron-dipyrromethene (BODIPY) real-time assay suitable for 96-well plate format, which allows screening of compounds as selective inhibitors of the formation of A?1-42 oligomers, is reported. These inhibitors decrease the cellular toxicity of A?1-42, although they fail in the ThT assay. The findings have been confirmed and validated by structural analysis and cell viability assays under comparable experimental conditions. It is demonstrated that the BODIPY assay is a convenient method to screen and discover new candidate compounds that slow down or stop the pathological early oligomerization process and are active in the cellular assay. Therefore, it is a suitable complementary screening method of the current ThT assay.

SUBMITTER: Tonali N

PROVIDER: S-EPMC7217026 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature

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Real-Time BODIPY-Binding Assay To Screen Inhibitors of the Early Oligomerization Process of Aβ1-42 Peptide.

Tonali Nicolo N Dodero Veronica I VI Kaffy Julia J Hericks Loreen L Ongeri Sandrine S Sewald Norbert N

Chembiochem : a European journal of chemical biology 20200109 8

Misfolding and aggregation of amyloid β1-42 peptide (Aβ1-42) play a central role in the pathogenesis of Alzheimer's disease (AD). Targeting the highly cytotoxic oligomeric species formed during the early stages of the aggregation process represents a promising therapeutic strategy to reduce the toxicity associated with Aβ1-42. Currently, the thioflavin T (ThT) assay is the only established spectrofluorometric method to screen aggregation inhibitors. The success of the ThT assay is that it can de ...[more]

PMID: 31702868

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Dataset Information

Real-Time BODIPY-Binding Assay To Screen Inhibitors of the Early Oligomerization Process of A?1-42 Peptide.

Publications

Real-Time BODIPY-Binding Assay To Screen Inhibitors of the Early Oligomerization Process of Aβ1-42 Peptide.

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