What question did this study set out to answer?

To identify how solution conditions and peptide sequences influence the transition of unaggregated amyloid-β 1-42 into oligomeric versus fibrillar structural assemblies.

March 1, 2003Journal of Biological ChemistryOpen Access

In Vitro Characterization of Conditions for Amyloid-β Peptide Oligomerization and Fibrillogenesis

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Authors

WSW. Blaine StineEmory University KDKarie N. DahlgrenNorthShore University HealthSystem GKGrant A. KrafftAcumen Pharmaceuticals (United States)

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Implication

In vitro study reveals solution conditions regulating amyloid-beta peptide oligomerization and assembly, highlighting specific conformational species driving neurotoxicity.

Key Points

To identify how solution conditions and peptide sequences influence the transition of unaggregated amyloid-β 1-42 into oligomeric versus fibrillar structural assemblies.
Utilized a chemically and structurally homogeneous, unaggregated Aβ1-42 starting preparation.
Systematically tested peptide conformational shifts across varying incubation times, concentrations, temperatures, pH levels, ionic strengths, and familial mutation variants.
Environmental parameters—including time, concentration, temperature, pH, ionic strength, and sequence variation—determine the generation of oligomers, fibrils, and fibrillar aggregates.
Oligomeric assemblies inhibit neuronal viability 10-fold more than fibrils and approximately 40-fold more than unaggregated peptide, exhibiting significant neurotoxicity at 10 nM.
Wild-type Aβ1-42 and familial Alzheimer's disease mutants resolve into structurally and neurotoxically distinct conformational profiles.

Cite This Study

Stine et al. (2003) studied this question.

synapsesocial.com/papers/69daa2cae6ab964fb0836694 https://doi.org/10.1074/jbc.m210207200

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Implication

In vitro study reveals solution conditions regulating amyloid-beta peptide oligomerization and assembly, highlighting specific conformational species driving neurotoxicity.

In Vitro Characterization of Conditions for Amyloid-β Peptide Oligomerization and Fibrillogenesis

Discussion

Member takes

Implication

Key Points

Cite This Study

In Vitro Characterization of Conditions for Amyloid-β Peptide Oligomerization and Fibrillogenesis

Discussion

Member takes

Implication

Key Points

Cite This Study

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