Design, Characterization, and Use of a Novel Amyloid β-Protein Control for Assembly, Neurotoxicity, and Gene Expression Studies.
@article{Yamin2016DesignCA,
title={Design, Characterization, and Use of a Novel Amyloid $\beta$-Protein Control for Assembly, Neurotoxicity, and Gene Expression Studies.},
author={Ghiam Yamin and Giovanni Coppola and David B. Teplow},
journal={Biochemistry},
year={2016},
volume={55 36},
pages={
5049-60
}
}A key pathogenic agent in Alzheimer's disease (AD) is the amyloid β-protein (Aβ), which self-assembles into a variety of neurotoxic structures. Establishing structure-activity relationships for these assemblies, which is critical for proper therapeutic target identification and design, requires aggregation and neurotoxicity experiments that are properly controlled with respect to the Aβ peptide itself. "Reverse" Aβ or non-Aβ peptides suffer from the fact that their biophysical properties are…
4 Citations
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References
SHOWING 1-10 OF 52 REFERENCES
Amyloid β-protein (Aβ) assembly: Aβ40 and Aβ42 oligomerize through distinct pathways
- Biology, ChemistryProceedings of the National Academy of Sciences of the United States of America
- 2002
PICUP, size-exclusion chromatography, dynamic light scattering, circular dichroism spectroscopy, and electron microscopy have been combined to elucidate fundamental features of the early assembly of Aβ40 and Aβ42, demonstrating that A β42 assembly involves formation of several distinct transient structures that gradually rearrange into protofibrils.
Structure‐Activity Relationships for a Series of Compounds that Inhibit Aggregation of the Alzheimer's Peptide, Aβ42
- Biology, ChemistryChemical biology & drug design
- 2014
The ability of a compound to inhibit Aβ aggregation was a good predictor of its efficacy in prolonging the life span and locomotive ability of transgenic flies expressing human Aβ42 in the central nervous system.
Spherical aggregates of β-amyloid (amylospheroid) show high neurotoxicity and activate tau protein kinase I/glycogen synthase kinase-3β
- Biology, ChemistryProceedings of the National Academy of Sciences of the United States of America
- 2003
The identification and characterization of ASPD is described and its possible role in the neurodegeneration in Alzheimer's disease is discussed and inhibition experiments with lithium suggest the involvement of tau protein kinase I/glycogen synthase kinase-3β in the early stages of ASD-induced neurodegenersation.
Oligomeric and Fibrillar Species of Amyloid-β Peptides Differentially Affect Neuronal Viability*
- Biology, ChemistryThe Journal of Biological Chemistry
- 2002
Data demonstrate that protocols developed to produce oligomeric and fibrillar Aβ-(1–42) are useful in distinguishing the structural and functional differences between A β-(1-42) and Aβ-1–40 and genetic mutations of Aβ.
Amyloid beta-protein fibrillogenesis. Structure and biological activity of protofibrillar intermediates.
- BiologyThe Journal of biological chemistry
- 1999
Alzheimer's disease is characterized by extensive cerebral amyloid deposition. Amyloid deposits associated with damaged neuropil and blood vessels contain abundant fibrils formed by the amyloid…
Fibril formation by primate, rodent, and Dutch-hemorrhagic analogues of Alzheimer amyloid beta-protein.
- BiologyBiochemistry
- 1992
The three N-terminal amino acid differences between Pm(1-40) and Ro(1 -40) had virtually no effect on the morphology or organization of the fibrils formed by these peptides, indicating that the lack of amyloid deposits in rodent brain is not due directly to specific changes in its beta/A4 sequence.
Amyloid β-protein oligomers and Alzheimer’s disease
- Biology, ChemistryAlzheimer's Research & Therapy
- 2013
The results of in vivo, in vitro and in silico studies of amyloid β-protein oligomers are reviewed, and important caveats are discussed that should be considered in the evaluation of these results.
Aβ Oligomers – a decade of discovery
- BiologyJournal of neurochemistry
- 2007
Accumulating evidence suggests that soluble forms of Aβ are indeed the proximate effectors of synapse loss and neuronal injury in Alzheimer’s disease.
The Cell-Selective Neurotoxicity of the Alzheimer's Aβ Peptide Is Determined by Surface Phosphatidylserine and Cytosolic ATP Levels. Membrane Binding Is Required for Aβ Toxicity
- Biology, ChemistryThe Journal of Neuroscience
- 2007
The response to Aβ by the cells with high Aβ binding affinity was characterized by a larger calcium response and increased mortality, lactate dehydrogenase release, caspase activation, and DNA fragmentation, and the distinctive sensitivity or resistance of the different subpopulations was maintained even after multiple cell divisions.