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@ARTICLE{Zempel:137121,
author = {Zempel, Hans and Luedtke, Julia and Kumar, Yatender and
Biernat, Jacek and Dawson, Hana and Mandelkow, Eckhard and
Mandelkow, Eva-Maria},
title = {{A}myloid-β oligomers induce synaptic damage via
{T}au-dependent microtubule severing by {TTLL}6 and
spastin.},
journal = {The EMBO journal},
volume = {32},
number = {22},
issn = {0261-4189},
address = {Hoboken, NJ [u.a.]},
publisher = {Wiley},
reportid = {DZNE-2020-03443},
pages = {2920-2937},
year = {2013},
abstract = {Mislocalization and aggregation of Aβ and Tau combined
with loss of synapses and microtubules (MTs) are hallmarks
of Alzheimer disease. We exposed mature primary neurons to
Aβ oligomers and analysed changes in the Tau/MT system. MT
breakdown occurs in dendrites invaded by Tau (Tau
missorting) and is mediated by spastin, an MT-severing
enzyme. Spastin is recruited by MT polyglutamylation,
induced by Tau missorting triggered translocalization of
TTLL6 (Tubulin-Tyrosine-Ligase-Like-6) into dendrites.
Consequences are spine loss and mitochondria and
neurofilament mislocalization. Missorted Tau is not axonally
derived, as shown by axonal retention of photoconvertible
Dendra2-Tau, but newly synthesized. Recovery from Aβ insult
occurs after Aβ oligomers lose their toxicity and requires
the kinase MARK (Microtubule-Affinity-Regulating-Kinase). In
neurons derived from Tau-knockout mice, MTs and synapses are
resistant to Aβ toxicity because TTLL6 mislocalization and
MT polyglutamylation are prevented; hence no spastin
recruitment and no MT breakdown occur, enabling faster
recovery. Reintroduction of Tau re-establishes Aβ-induced
toxicity in TauKO neurons, which requires phosphorylation of
Tau's KXGS motifs. Transgenic mice overexpressing Tau show
TTLL6 translocalization into dendrites and decreased MT
stability. The results provide a rationale for MT
stabilization as a therapeutic approach.},
keywords = {Adenosine Triphosphatases: physiology / Amyloid
beta-Peptides: chemistry / Amyloid beta-Peptides: physiology
/ Animals / Cells, Cultured / Glutamic Acid: metabolism /
Mice / Mice, Knockout / Microtubules: physiology / Peptide
Synthases: physiology / Rats / Spastin / Synapses: pathology
/ tau Proteins: genetics / tau Proteins: physiology /
Amyloid beta-Peptides (NLM Chemicals) / Mapt protein, mouse
(NLM Chemicals) / tau Proteins (NLM Chemicals) / Glutamic
Acid (NLM Chemicals) / Adenosine Triphosphatases (NLM
Chemicals) / Spastin (NLM Chemicals) / Spast protein, mouse
(NLM Chemicals) / Peptide Synthases (NLM Chemicals) / TTLL6
protein, mouse (NLM Chemicals)},
cin = {AG Mandelkow 1 / AG Mandelkow 2},
ddc = {570},
cid = {I:(DE-2719)1013014 / I:(DE-2719)1013015},
pnm = {342 - Disease Mechanisms and Model Systems (POF3-342)},
pid = {G:(DE-HGF)POF3-342},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:24065130},
pmc = {pmc:PMC3831312},
doi = {10.1038/emboj.2013.207},
url = {https://pub.dzne.de/record/137121},
}