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@ARTICLE{Zhang:843873,
author = {Zhang, Tao and Pauly, Thomas and Nagel-Steger, Luitgard},
title = {{S}toichiometric {Z}n 2+ interferes with the
self-association of {A}β42: {I}nsights from size
distribution analysis},
journal = {International journal of biological macromolecules},
volume = {113},
issn = {0141-8130},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2018-01403},
pages = {631-639},
year = {2018},
abstract = {The abnormal aggregation of amyloid β (Aβ) peptides in
the brain has been recognized as a central event in
Alzheimer's disease (AD). Divalent metal ions such as Zn2+
have been shown to be closely involved in modulating Aβ
self-association. Although the link between Zn2+
dyshomeostasis and brain Aβ deposition has been
established, the effect of Zn2+ on the aggregation of Aβ is
still incompletely clarified. By combining analytical
ultracentrifugation (AUC), circular dichroism (CD)
spectroscopy, thioflavin T (ThT) assay and atomic force
microscopy (AFM) imaging, we analyzed the impact of
stoichiometric Zn2+ on the aggregation process of Aβ42, the
main toxic isoform of Aβ species in the brain. Aβ42
aggregates found in the presence of Zn2+ were smaller in
size, non-fibrillary and showed less β-sheet structures
than aggregates formed in absence of Zn2+. AUC showed that
Zn2+ was capable of retaining monomeric Aβ42 in solution.
Zn2+ chelation by EDTA totally reversed the inhibitory
effect of Zn2+ on Aβ42 fibrillation. Our results provide
further evidence that Zn2+ shifts the self-association of
Aβ42 toward a non-fibrillary pathway by interfering with
the aggregation process at multiple levels.},
cin = {ICS-6},
ddc = {540},
cid = {I:(DE-Juel1)ICS-6-20110106},
pnm = {553 - Physical Basis of Diseases (POF3-553)},
pid = {G:(DE-HGF)POF3-553},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:29476859},
UT = {WOS:000432503100074},
doi = {10.1016/j.ijbiomac.2018.02.123},
url = {https://juser.fz-juelich.de/record/843873},
}