Evidence map›Paper›PMID 24033133›Full record

ArticleBiochemistry2013

Conformational features of tau fibrils from Alzheimer's disease brain are faithfully propagated by unmodified recombinant protein.

Olga A Morozova, Zachary M March, Anne S Robinson, David W Colby

Erratum issuedAbstract read
In one paragraph

Article in Biochemistry, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 49 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed, 1 pooled it
3.5field-weighted citation impact, top 7% 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

49 citing papers in PubMed, 1 synthesis or guideline pooled it, 86 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Review
  4. Review
  5. Review
  6. Article
  7. Article
  8. Review
  9. Prion-like strain effects in tauopathies.Cell and tissue research · 2023
    Review
  10. Review
  11. Review
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. Review
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors at 1 institution in 1 country.

Olga A MorozovaDepartment of Chemical and Biomolecular Engineering, University of Delaware , Newark, Delaware 19716, United States.
Zachary M March
Anne S Robinson
David W Colby
University of Delaware · US

Funding

COBRE on Membrane Protein Production and CharacterizationP30GM103519 · NIGMS · UNIVERSITY OF DELAWARE · PI LENHOFF, ABRAHAM M · 2012 to 2014
$3.3M
An HIV Intervention for Black Men at RiskR34MH077550 · NIMH · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI WILLIAMS, JOHN K. · 2007 to 2009
$911k
Detection and structural analysis of misfolded proteins causing neurodegenerationR00NS064173 · NINDS · UNIVERSITY OF DELAWARE · PI COLBY, DAVID W · 2010 to 2012
$694k
Detection and structural analysis of misfolded proteins causing neurodegenerationK99NS064173 · NINDS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI COLBY, DAVID W · 2009 to 2010
$180k
NIGMS NIH HHS GM103519NIGMS NIH HHS P30 GM103519NIMH NIH HHS MH/NS077550NINDS NIH HHS K99 NS064173NINDS NIH HHS NS064173NINDS NIH HHS R00 NS064173
6 · The paper itself

Abstract

Fibrils composed of tau protein are a pathological hallmark of several neurodegenerative disorders including Alzheimer's disease (AD). Here we show that when recombinant tau protein is seeded with paired helical filaments (PHFs) isolated from AD brain, the amyloid formed shares many of the structural features of AD PHFs. In contrast, tau amyloids formed with heparin as an inducing agent-a common biochemical model of tau misfolding-are structurally distinct from brain-derived PHFs. Using ultrastructural analysis by electron microscopy, circular dichroism, and chemical denaturation, we found that AD seeded recombinant tau fibrils were not significantly different than tau fibrils isolated from AD brain tissue. Tau fibrils produced by incubating recombinant tau with heparin had significantly narrower fibrils with a longer periodicity, higher chemical stability, and distinct secondary structure compared to AD PHFs. The addition of heparin to the reaction of recombinant tau and AD PHFs also corrupted the templating process, resulting in a mixture of fibril conformations. Our results suggest that AD-isolated PHFs act as a conformational template for the formation of recombinant tau fibrils. Therefore, the use of AD PHFs as seeds to stimulate recombinant tau amyloid formation produces synthetic tau fibers that closely resemble those associated with AD pathology and provides a biochemical model of tau misfolding that may be of improved utility for structural studies and drug screening. These results also demonstrate that post-translational modifications such as phosphorylation are not a prerequisite for the propagation of the tau fibril conformation found in AD.

Indexed as

Alzheimer DiseaseBrainCircular DichroismHeparinMicroscopy, ElectronNeurofibrillary TanglesProtein ConformationRecombinant Proteinstau ProteinsHeparinRecombinant Proteinstau Proteins

Identifiers

PMID24033133
PMCPMC4142060
OpenAlexW2038831946

What OpenQuestion holds

Textmetadata
LicenceTDM
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.