Evidence map›Paper›PMID 25882706›Full record

ArticleHuman molecular genetics2015

The active Hsc70/tau complex can be exploited to enhance tau turnover without damaging microtubule dynamics.

Sarah N Fontaine, Mackenzie D Martin, Elias Akoury, Victoria A Assimon, Sergiy Borysov, Bryce A Nordhues, Jonathan J Sabbagh, Matt Cockman, Jason E Gestwicki, Markus Zweckstetter and 1 more

Open access · bronzeAbstract read
In one paragraph

Article in Human molecular genetics, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
2.0field-weighted citation impact, top 14% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

27 citing papers in PubMed, 36 citations in OpenAlex.

  1. Neuroinflammation and Tauopathies.Molecular biology reports · 2026
    Review
  2. Review
  3. Article
  4. Article
  5. DnaJs are enriched in tau regulators.International journal of biological macromolecules · 2023
    Article
  6. ACS chemical biology · 2023
    Article
  7. Article
  8. Review
  9. Article
  10. Review
  11. Article
  12. Review
  13. Article
  14. Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Therapeutic Strategies for Restoring Tau Homeostasis.Cold Spring Harbor perspectives in medicine · 2018
    Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors at 5 institutions in 2 countries.

Sarah N FontaineDepartment of Molecular Medicine, College of Medicine, Byrd Alzheimer's Institute, University of South Florida, Tampa, FL 33613, USA, James A. Haley Veteran's Hospital, 13000 Bruce B. Downs Blvd, Tampa, FL 33612, USA.
Mackenzie D MartinDepartment of Molecular Medicine, College of Medicine, Byrd Alzheimer's Institute, University of South Florida, Tampa, FL 33613, USA.
Elias AkouryDepartment for NMR-Based Structural Biology, Max Planck Institute for Biophysical Chemistry, Göttingen 37077, Germany, German Center for Neurodegenerative Diseases (DZNE), Göttingen 37077, Germany, Center for Nanoscale Microscopy and Molecular Physiology of the Brain (CNMPB), University Medical Center, Göttingen 37073, Germany and.
Victoria A AssimonInstitute for Neurodegenerative Disease, University of California at San Francisco, San Francisco, CA 94158, USA.
Sergiy BorysovDepartment of Molecular Medicine, College of Medicine, Byrd Alzheimer's Institute, University of South Florida, Tampa, FL 33613, USA.
Bryce A NordhuesDepartment of Molecular Medicine, College of Medicine, Byrd Alzheimer's Institute, University of South Florida, Tampa, FL 33613, USA, James A. Haley Veteran's Hospital, 13000 Bruce B. Downs Blvd, Tampa, FL 33612, USA.
Jonathan J SabbaghDepartment of Molecular Medicine, College of Medicine, Byrd Alzheimer's Institute, University of South Florida, Tampa, FL 33613, USA, James A. Haley Veteran's Hospital, 13000 Bruce B. Downs Blvd, Tampa, FL 33612, USA.
Matt CockmanDepartment of Molecular Medicine, College of Medicine, Byrd Alzheimer's Institute, University of South Florida, Tampa, FL 33613, USA.
Jason E GestwickiInstitute for Neurodegenerative Disease, University of California at San Francisco, San Francisco, CA 94158, USA.
Markus ZweckstetterDepartment for NMR-Based Structural Biology, Max Planck Institute for Biophysical Chemistry, Göttingen 37077, Germany, German Center for Neurodegenerative Diseases (DZNE), Göttingen 37077, Germany, Center for Nanoscale Microscopy and Molecular Physiology of the Brain (CNMPB), University Medical Center, Göttingen 37073, Germany and.
Chad A DickeyDepartment of Molecular Medicine, College of Medicine, Byrd Alzheimer's Institute, University of South Florida, Tampa, FL 33613, USA, James A. Haley Veteran's Hospital, 13000 Bruce B. Downs Blvd, Tampa, FL 33612, USA, cdickey@health.usf.edu.
University of South Florida · USUSF Health Byrd Alzheimer's Institute · USInstitute for Neurodegenerative Disorders · USGerman Center for Neurodegenerative Diseases · DEMax Planck Institute for Biophysical Chemistry · DE

Funding

Molecular Chaperones and Small MoleculesR01NS059690 · NINDS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI Jason E Gestwicki · 2008 to 2026
$7.9M
The Hsp90 cochaperone FKBP51 regulates tau structure and functionR01NS073899 · NINDS · UNIVERSITY OF SOUTH FLORIDA · PI Laura J Blair · 2011 to 2026
$6.9M
Chemical Probes and Chaperone-Accelerated Turnover of TauR21AG042813 · NIA · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI GESTWICKI, JASON E · 2012 to 2013
$429k
Hsp70_DNAJ interface as a drug target for Alzheimers disease and TBII01BX001637 · VA · JAMES A. HALEY VA MEDICAL CENTER · PI BICKFORD, PAULA C · 2013 to 2017
–
BLRD VA I01 BX001637NIA NIH HHS AG042813NIA NIH HHS R21 AG042813NINDS NIH HHS 2R01NS059690NINDS NIH HHS NS073899NINDS NIH HHS R01 NS059690
6 · The paper itself

Abstract

The pathological accumulation of abnormally hyperphosphorylated and aggregated tau, a neuronal microtubule (MT)-associated protein that functions to maintain MT stability, is implicated in a number of hereditary and sporadic neurodegenerative diseases including frontotemporal dementia and Alzheimer's disease. Targeting tau for the treatment of these diseases is an area of intense interest and toward that end, modulation of cellular molecular chaperones is a potential therapeutic target. In particular, the constitutive Hsp70 isoform, Hsc70, seems highly interconnected with tau, preserving tau protein levels and synergizing with it to assemble MTs. But the relationship between tau and Hsc70, as well as the impact of this interaction in neurons and its therapeutic implications remain unknown. Using a human dominant negative Hsc70 that resembles isoform selective inhibition of this important chaperone, we found for the first time that Hsc70 activity is required to stimulate MT assembly in cells and brain. However, surprisingly, active Hsc70 also requires active tau to regulate MT assembly in vivo, suggesting that tau acts in some ways as a co-chaperone for Hsc70 to coordinate MT assembly. This was despite tau binding to Hsc70 as substrate, as determined biochemically. Moreover, we show that while chronic Hsc70 inhibition damaged MT dynamics, intermittent treatment with a small molecule Hsp70 inhibitor lowered tau in brain tissue without disrupting MT integrity. Thus, in tauopathies, where MT injury would be detrimental to neurons, the unique relationship of tau with the Hsc70 machinery can be exploited to deplete tau levels without damaging MT networks.

Indexed as

AnimalsBrainGene Expression RegulationHEK293 CellsHSC70 Heat-Shock ProteinsHumansMagnetic Resonance SpectroscopyMice, KnockoutMicrotubulesNeuronsOocytesPhosphorylationProtein IsoformsTauopathiestau ProteinsXenopusHSC70 Heat-Shock ProteinsMAPT protein, humanProtein Isoformstau Proteins

Identifiers

PMID25882706
PMCPMC4560066
OpenAlexW1970845408

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.