Cited by 735Alzheimer's disease research and treatmentsHeat shock proteins researchUbiquitin and proteasome pathways

CHIP and Hsp70 regulate tau ubiquitination, degradation and aggregation

Petrucelli, L.·2004·Human Molecular Genetics

Abstract

Molecular chaperones, ubiquitin ligases and proteasome impairment have been implicated in several neurodegenerative diseases, including Alzheimer's and Parkinson's disease, which are characterized by accumulation of abnormal protein aggregates (e.g. tau and alpha-synuclein respectively). Here we report that CHIP, an ubiquitin ligase that interacts directly with Hsp70/90, induces ubiquitination of the microtubule associated protein, tau. CHIP also increases tau aggregation. Consistent with this observation, diverse of tau lesions in human postmortem tissue were found to be immunopositive for CHIP. Conversely, induction of Hsp70 through treatment with either geldanamycin or heat shock factor 1 leads to a decrease in tau steady-state levels and a selective reduction in detergent insoluble tau. Furthermore, 30-month-old mice overexpressing inducible Hsp70 show a significant reduction in tau levels. Together these data demonstrate that the Hsp70/CHIP chaperone system plays an important role in the regulation of tau turnover and the selective elimination of abnormal tau species. Hsp70/CHIP may therefore play an important role in the pathogenesis of tauopathies and also represents a potential therapeutic target.

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Crossref · 10.1093/hmg/ddh083

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  • Induction of Hsp70 by geldanamycin promotes tau degradation both in vitro and in vivo, whereas deletion of CHIP increases the accumulation of phosphorylated tau and caspase-3 cleaved tau.

    “Induction of Hsp70 by geldanamycin promotes tau degradation both in vitro and in vivo, whereas deletion of CHIP increases the accumulation of phosphorylated tau and caspase-3 cleaved tau [167, 171].”

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Authors
Petrucelli, L.
Affiliations
Mayo Clinic in Florida (US)
Corresponding author
Petrucelli, L.
Venue
Human Molecular Genetics
Published
2004-01-28
Volume
13
Issue
7
Pages
703-714
ISSN
  • 0964-6906 (ISSN-L)
  • 1460-2083
OpenAlex
W2168079270
Cited by
735
References
41
Citations by year
2026: 25 · 2025: 34 · 2024: 32 · 2023: 35 · 2022: 39 · 2021: 37 · 2020: 35 · 2019: 25 · 2018: 33 · 2017: 30 · 2016: 30 · 2015: 38 · 2014: 34 · 2013: 28 · 2012: 32
FWCI
19.08
Type
journal article
Language
en
Open access
closed
Locations
  • Human Molecular Genetics (publishedVersion)
  • PubMed (publishedVersion)
  • UCL Discovery (University College London) (submittedVersion)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Heat shock proteins research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ubiquitin and proteasome pathways
Keywords
CHIP, HSP70, tau protein, ubiquitination, protein degradation, tau aggregation, molecular chaperones, ubiquitin ligase
MeSH terms
Heat Shock Transcription Factors, Animals, Cell Line, Detergents, DNA-Binding Proteins, Genetic Vectors, Humans, Immunohistochemistry, Lac Operon

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