Evidence map›Paper›PMID 33217380›Full record

ArticleBiophysical journal2020

Atomic Force Microscopy Imaging and Nanomechanical Properties of Six Tau Isoform Assemblies.

Ali Makky, Luc Bousset, Karine Madiona, Ronald Melki

Open access · bronzeAbstract read
In one paragraph

Article in Biophysical journal, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
1.1field-weighted citation impact, top 22% 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

9 citing papers in PubMed, 16 citations in OpenAlex.

  1. Differential proteostasis imbalance and the molecular basis of distinct synucleinopathies and tauopathies.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2026
    Review
  2. From aggregate structure to disease trajectory: the role of the proteostasis network.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2026
    Review
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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

4 authors at 2 institutions in 1 country.

Ali MakkyInstitut Galien Paris-Sud, CNRS, Université Paris-Sud, Université Paris-Saclay, Châtenay-Malabry, France. Electronic address: ali.makky@universite-paris-saclay.fr.
Luc BoussetInstitut Fancois Jacob, CEA and Laboratory of Neurodegenerative Diseases, CNRS, Fontenay-Aux-Roses, France.
Karine MadionaInstitut Fancois Jacob, CEA and Laboratory of Neurodegenerative Diseases, CNRS, Fontenay-Aux-Roses, France.
Ronald MelkiInstitut Fancois Jacob, CEA and Laboratory of Neurodegenerative Diseases, CNRS, Fontenay-Aux-Roses, France. Electronic address: ronald.melki@cnrs.fr.
Centre National de la Recherche Scientifique · FRUniversité Paris-Sud · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The amyloid fibrillar form of the protein Tau is involved in a number of neurodegenerative diseases, also known as tauopathies. In this work, six different fibrillar Tau isoforms were assembled in vitro. The morphological and nanomechanical properties of these isoforms were studied using atomic force microscopy at high resolution in air and buffer. Our results demonstrate that all Tau isoform fibrils exhibit paired-helical-filament-like structures consisting of two protofibrils separated by a shallow groove. Interestingly, whereas the N-terminal inserts do not contribute to any morphological or mechanical difference between the isoforms with the same carboxyl-terminal microtubule-binding domain repeats, isoforms with four microtubule repeats (4R) exhibited a persistence length ranging from 2.0 to 2.8 μm, almost twofold higher than those with three repeats (3R). In addition, the axial Young's modulus values derived from the persistence lengths, as well as their radial ones determined via nanoindentation experiments, were very low compared to amyloid fibrils made of other proteins. This sheds light on the weak intermolecular interaction acting between the paired β-sheets within Tau fibrils. This may play an important role in their association into high molecular weight assemblies, their dynamics, their persistence, their clearance in cells, and their propagation.

Indexed as

Amyloidtau ProteinsMicroscopy, Atomic ForceMicrotubulesProtein IsoformsAmyloidProtein Isoformstau Proteins

Identifiers

PMID33217380
PMCPMC7822747
OpenAlexW3105703174

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.