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@ARTICLE{Kaji:275846,
author = {Kaji, Seiji and Berghoff, Stefan A and Spieth, Lena and
Schlaphoff, Lennart and Sasmita, Andrew O and Vitale, Simona
and Büschgens, Luca and Kedia, Shreeya and Zirngibl, Martin
and Nazarenko, Taisiia and Damkou, Alkmini and Hosang, Leon
and Depp, Constanze and Kamp, Frits and Scholz, Patricia and
Ewers, David and Giera, Martin and Ischebeck, Till and
Wurst, Wolfgang and Wefers, Benedikt and Schifferer, Martina
and Willem, Michael and Nave, Klaus-Armin and Haass,
Christian and Arzberger, Thomas and Jäkel, Sarah and
Wirths, Oliver and Saher, Gesine and Simons, Mikael},
title = {{A}polipoprotein {E} aggregation in microglia initiates
{A}lzheimer's disease pathology by seeding β-amyloidosis.},
journal = {Immunity},
volume = {57},
number = {11},
issn = {1074-7613},
address = {[Cambridge, Mass.]},
publisher = {Cell Press},
reportid = {DZNE-2025-00081},
pages = {2651 - 2668.e12},
year = {2024},
abstract = {The seeded growth of pathogenic protein aggregates
underlies the pathogenesis of Alzheimer's disease (AD), but
how this pathological cascade is initiated is not fully
understood. Sporadic AD is linked genetically to
apolipoprotein E (APOE) and other genes expressed in
microglia related to immune, lipid, and endocytic functions.
We generated a transgenic knockin mouse expressing
HaloTag-tagged APOE and optimized experimental protocols for
the biochemical purification of APOE, which enabled us to
identify fibrillary aggregates of APOE in mice with
amyloid-β (Aβ) amyloidosis and in human AD brain
autopsies. These APOE aggregates that stained positive for
β sheet-binding dyes triggered Aβ amyloidosis within the
endo-lysosomal system of microglia, in a process influenced
by microglial lipid metabolism and the JAK/STAT signaling
pathway. Taking these observations together, we propose a
model for the onset of Aβ amyloidosis in AD, suggesting
that the endocytic uptake and aggregation of APOE by
microglia can initiate Aβ plaque formation.},
keywords = {Animals / Alzheimer Disease: metabolism / Alzheimer
Disease: pathology / Microglia: metabolism / Mice / Humans /
Mice, Transgenic / Amyloid beta-Peptides: metabolism /
Amyloidosis: metabolism / Amyloidosis: pathology /
Amyloidosis: genetics / Apolipoproteins E: metabolism /
Apolipoproteins E: genetics / Signal Transduction / Plaque,
Amyloid: metabolism / Plaque, Amyloid: pathology / Brain:
metabolism / Brain: pathology / Disease Models, Animal /
Lipid Metabolism / Protein Aggregation, Pathological / STAT
Transcription Factors: metabolism / Janus Kinases:
metabolism / Alzheimer’s disease (Other) / ApoE (Other) /
inflammation (Other) / lipids (Other) / microglia (Other) /
Amyloid beta-Peptides (NLM Chemicals) / Apolipoproteins E
(NLM Chemicals) / STAT Transcription Factors (NLM Chemicals)
/ Janus Kinases (NLM Chemicals)},
cin = {AG Simons / AG Wurst / AG Misgeld / AG Haass},
ddc = {610},
cid = {I:(DE-2719)1110008 / I:(DE-2719)1140001 /
I:(DE-2719)1110000-4 / I:(DE-2719)1110007},
pnm = {351 - Brain Function (POF4-351) / 352 - Disease Mechanisms
(POF4-352)},
pid = {G:(DE-HGF)POF4-351 / G:(DE-HGF)POF4-352},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:39419029},
doi = {10.1016/j.immuni.2024.09.014},
url = {https://pub.dzne.de/record/275846},
}