Cholesterol catalyses Aβ42 aggregation through a heterogeneous nucleation pathway in the presence of lipid membranes
(2018) In Nature Chemistry 10(6). p.673-683- Abstract
Alzheimer’s disease is a neurodegenerative disorder associated with the aberrant aggregation of the amyloid-β peptide. Although increasing evidence implicates cholesterol in the pathogenesis of Alzheimer’s disease, the detailed mechanistic link between this lipid molecule and the disease process remains to be fully established. To address this problem, we adopt a kinetics-based strategy that reveals a specific catalytic role of cholesterol in the aggregation of Aβ42 (the 42-residue form of the amyloid-β peptide). More specifically, we demonstrate that lipid membranes containing cholesterol promote Aβ42 aggregation by enhancing its primary nucleation rate by up to 20-fold through a heterogeneous nucleation pathway. We further show that... (More)
Alzheimer’s disease is a neurodegenerative disorder associated with the aberrant aggregation of the amyloid-β peptide. Although increasing evidence implicates cholesterol in the pathogenesis of Alzheimer’s disease, the detailed mechanistic link between this lipid molecule and the disease process remains to be fully established. To address this problem, we adopt a kinetics-based strategy that reveals a specific catalytic role of cholesterol in the aggregation of Aβ42 (the 42-residue form of the amyloid-β peptide). More specifically, we demonstrate that lipid membranes containing cholesterol promote Aβ42 aggregation by enhancing its primary nucleation rate by up to 20-fold through a heterogeneous nucleation pathway. We further show that this process occurs as a result of cooperativity in the interaction of multiple cholesterol molecules with Aβ42. These results identify a specific microscopic pathway by which cholesterol dramatically enhances the onset of Aβ42 aggregation, thereby helping rationalize the link between Alzheimer’s disease and the impairment of cholesterol homeostasis.
(Less)
- author
- organization
- publishing date
- 2018-06
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Nature Chemistry
- volume
- 10
- issue
- 6
- pages
- 673 - 683
- publisher
- Nature Publishing Group
- external identifiers
-
- pmid:29736006
- scopus:85046548678
- ISSN
- 1755-4330
- DOI
- 10.1038/s41557-018-0031-x
- language
- English
- LU publication?
- yes
- id
- d8cc9f84-9235-4bab-9823-80c04ff10d22
- date added to LUP
- 2018-05-24 13:16:07
- date last changed
- 2024-04-15 08:18:29
@article{d8cc9f84-9235-4bab-9823-80c04ff10d22,
abstract = {{<p>Alzheimer’s disease is a neurodegenerative disorder associated with the aberrant aggregation of the amyloid-β peptide. Although increasing evidence implicates cholesterol in the pathogenesis of Alzheimer’s disease, the detailed mechanistic link between this lipid molecule and the disease process remains to be fully established. To address this problem, we adopt a kinetics-based strategy that reveals a specific catalytic role of cholesterol in the aggregation of Aβ42 (the 42-residue form of the amyloid-β peptide). More specifically, we demonstrate that lipid membranes containing cholesterol promote Aβ42 aggregation by enhancing its primary nucleation rate by up to 20-fold through a heterogeneous nucleation pathway. We further show that this process occurs as a result of cooperativity in the interaction of multiple cholesterol molecules with Aβ42. These results identify a specific microscopic pathway by which cholesterol dramatically enhances the onset of Aβ42 aggregation, thereby helping rationalize the link between Alzheimer’s disease and the impairment of cholesterol homeostasis.</p>}},
author = {{Habchi, Johnny and Chia, Sean and Galvagnion, Céline and Michaels, Thomas C.T. and Bellaiche, Mathias M.J. and Ruggeri, Francesco Simone and Sanguanini, Michele and Idini, Ilaria and Kumita, Janet R. and Sparr, Emma and Linse, Sara and Dobson, Christopher M. and Knowles, Tuomas P.J. and Vendruscolo, Michele}},
issn = {{1755-4330}},
language = {{eng}},
number = {{6}},
pages = {{673--683}},
publisher = {{Nature Publishing Group}},
series = {{Nature Chemistry}},
title = {{Cholesterol catalyses Aβ42 aggregation through a heterogeneous nucleation pathway in the presence of lipid membranes}},
url = {{http://dx.doi.org/10.1038/s41557-018-0031-x}},
doi = {{10.1038/s41557-018-0031-x}},
volume = {{10}},
year = {{2018}},
}