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@ARTICLE{Saidi:137778,
author = {Saidi, Laiq-Jan and Polydoro, Manuela and Kay, Kevin R and
Sanchez, Laura and Mandelkow, Eva-Maria and Hyman, Bradley T
and Spires-Jones, Tara L},
title = {{C}arboxy terminus heat shock protein 70 interacting
protein reduces tau-associated degenerative changes.},
journal = {Journal of Alzheimer's disease},
volume = {44},
number = {3},
issn = {1875-8908},
address = {Amsterdam},
publisher = {IOS Press},
reportid = {DZNE-2020-04100},
pages = {937-947},
year = {2015},
abstract = {One of the hallmarks of Alzheimer's disease is the
formation of neurofibrillary tangles, intracellular
aggregates of hyperphosphorylated, mislocalized tau protein,
which are associated with neuronal loss. Changes in tau are
known to impair cellular transport (including that of
mitochondria) and are associated with cell death in cell
culture and mouse models of tauopathy. Thus clearing
pathological forms of tau from cells is a key therapeutic
strategy. One critical modulator in the degradation and
clearance of misfolded proteins is the co-chaperone CHIP
(Carboxy terminus Hsp70 interacting Protein), which is known
to play a role in refolding and clearance of
hyperphosphorylated tau. Here, we tested the hypothesis that
CHIP could ameliorate pathological changes associated with
tau. We find that co-expressing CHIP with full-length tau,
tau truncated at D421 mimicking caspase cleavage, or the
short tauRDΔK280 tau construct containing only the tau
repeat domain with a tauopathy mutation, decreases tau
protein levels in human H4 neuroglioma cells in a manner
dependent on the Hsp70-binding TPR domain of CHIP. The
observed reduction in tau levels by CHIP is associated with
a decrease of tau phosphorylation and reduced levels of
cleaved Caspase 3 indicating that CHIP plays an important
role in preventing tau-induced pathological changes.
Furthermore, tau-associated mitochondrial transport deficits
are rescued by CHIP co-expression in H4 cells. Together,
these data suggest that the co-chaperone CHIP can rescue the
pathological effects of tau, and indicate that other
diseases of protein misfolding and accumulation may also
benefit from CHIP upregulation.},
keywords = {Caspase 3: pharmacology / Cell Line, Tumor / Cell
Proliferation: genetics / Gene Expression Regulation: drug
effects / Gene Expression Regulation: genetics / Green
Fluorescent Proteins: genetics / Green Fluorescent Proteins:
metabolism / HSP70 Heat-Shock Proteins: genetics / HSP70
Heat-Shock Proteins: metabolism / Humans / Mitochondria:
metabolism / Mutation: genetics / Neuroblastoma: pathology /
Protein Binding: drug effects / Transfection /
Ubiquitin-Protein Ligases: genetics / Ubiquitin-Protein
Ligases: metabolism / tau Proteins: genetics / tau Proteins:
metabolism / HSP70 Heat-Shock Proteins (NLM Chemicals) / tau
Proteins (NLM Chemicals) / Green Fluorescent Proteins (NLM
Chemicals) / STUB1 protein, human (NLM Chemicals) /
Ubiquitin-Protein Ligases (NLM Chemicals) / Caspase 3 (NLM
Chemicals)},
cin = {AG Mandelkow 2},
ddc = {610},
cid = {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:25374103},
doi = {10.3233/JAD-142094},
url = {https://pub.dzne.de/record/137778},
}