Neuronal spreading and plaque induction of intracellular Aβ and its disruption of Aβ homeostasis.
Neuronal spreading and plaque induction of intracellular Aβ and its disruption of Aβ homeostasis.
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DOI:
10.1007/s00401-021-02345-9
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发表时间:
2021-10
影响因子:
12.7
通讯作者:
Gouras GK
中科院分区:
文献类型:
--
作者:
Roos TT;Garcia MG;Martinsson I;Mabrouk R;Israelsson B;Deierborg T;Kobro-Flatmoen A;Tanila H;Gouras GK
The amyloid-beta peptide (Aβ) is thought to have prion-like properties promoting its spread throughout the brain in Alzheimer’s disease (AD). However, the cellular mechanism(s) of this spread remains unclear. Here, we show an important role of intracellular Aβ in its prion-like spread. We demonstrate that an intracellular source of Aβ can induce amyloid plaques in vivo via hippocampal injection. We show that hippocampal injection of mouse AD brain homogenate not only induces plaques, but also damages interneurons and affects intracellular Aβ levels in synaptically connected brain areas, paralleling cellular changes seen in AD. Furthermore, in a primary neuron AD model, exposure of picomolar amounts of brain-derived Aβ leads to an apparent redistribution of Aβ from soma to processes and dystrophic neurites. We also observe that such neuritic dystrophies associate with plaque formation in AD-transgenic mice. Finally, using cellular models, we propose a mechanism for how intracellular accumulation of Aβ disturbs homeostatic control of Aβ levels and can contribute to the up to 10,000-fold increase of Aβ in the AD brain. Our data indicate an essential role for intracellular prion-like Aβ and its synaptic spread in the pathogenesis of AD. The online version contains supplementary material available at 10.1007/s00401-021-02345-9.
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DOI:
10.1523/jneurosci.3088-11.2011
发表时间:
2011-10-12
期刊:
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子:
--
作者:
Langer F;Eisele YS;Fritschi SK;Staufenbiel M;Walker LC;Jucker M
通讯作者:
Jucker M
影响因子:
15.1
作者:
Kayed R;Head E;Sarsoza F;Saing T;Cotman CW;Necula M;Margol L;Wu J;Breydo L;Thompson JL;Rasool S;Gurlo T;Butler P;Glabe CG
通讯作者:
Glabe CG
影响因子:
56.9
作者:
Brody, David L.;Magnoni, Sandra;Schwetye, Kate E.;Spinner, Michael L.;Esparza, Thomas J.;Stocchetti, Nino;Zipfel, Gregory J.;Holtzman, David M.
通讯作者:
Holtzman, David M.
影响因子:
5.3
作者:
Janelidze S;Zetterberg H;Mattsson N;Palmqvist S;Vanderstichele H;Lindberg O;van Westen D;Stomrud E;Minthon L;Blennow K;Swedish BioFINDER study group;Hansson O
通讯作者:
Hansson O
影响因子:
5.5
作者:
Mori, C;Spooner, ET;Lemere, CA
通讯作者:
Lemere, CA