Evidence map›Paper›PMID 21876182›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2011

Observation of spatial propagation of amyloid assembly from single nuclei.

Tuomas P J Knowles, Duncan A White, Adam R Abate, Jeremy J Agresti, Samuel I A Cohen, Ralph A Sperling, Erwin J De Genst, Christopher M Dobson, David A Weitz

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 66 papers.

0numbers the graph read from it
0cells of the map it votes in
66citing papers in PubMed
–field-weighted citation impact
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

66 citing papers in PubMed.

  1. Review
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Amyloid-β modulates the phase separation and aggregation of α-synuclein.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  8. Review
  9. Article
  10. Article
  11. Article
  12. Review
  13. Review
  14. Toward the quantification of α-synuclein aggregates with digital seed amplification assays.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  15. Engineering synthetic biomolecular condensates.Nature reviews bioengineering · 2023
    Review
  16. Article
  17. Review
  18. Review
  19. Article
  20. Amyloid Formation in Nanoliter Droplets.International journal of molecular sciences · 2022
    Article

6 more citing papers are in PubMed but not listed here.

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

9 authors.

Tuomas P J KnowlesDepartment of Physics and School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA.
Duncan A White
Adam R Abate
Jeremy J Agresti
Samuel I A Cohen
Ralph A Sperling
Erwin J De Genst
Christopher M Dobson
David A Weitz

Funding

Biotechnology and Biological Sciences Research Council BB/H003843/1Medical Research Council G1002272Medical Research Council MC_G1000734Wellcome Trust 089703
6 · The paper itself

Abstract

The crucial early stages of amyloid growth, in which normally soluble proteins are converted into fibrillar nanostructures, are challenging to study using conventional techniques yet are critical to the protein aggregation phenomena implicated in many common pathologies. As with all nucleation and growth phenomena, it is difficult to track individual nuclei in traditional macroscopic experiments, which probe the overall temporal evolution of the sample, but do not yield detailed information on the primary nucleation step as they mix independent stochastic events into an ensemble measurement. To overcome this limitation, we have developed microdroplet assays enabling us to detect single primary nucleation events and to monitor their subsequent spatial as well as temporal evolution, both of which we find to be determined by secondary nucleation phenomena. By deforming the droplets to high aspect ratio, we visualize in real-time propagating waves of protein assembly emanating from discrete primary nucleation sites. We show that, in contrast to classical gelation phenomena, the primary nucleation step is characterized by a striking dependence on system size, and the filamentous protein self-assembly process involves a highly nonuniform spatial distribution of aggregates. These findings deviate markedly from the current picture of amyloid growth and uncover a general driving force, originating from confinement, which, together with biological quality control mechanisms, helps proteins remain soluble and therefore functional in nature.

Indexed as

Models, ChemicalAmyloidAnimalsHumansSolubilityAmyloid

Identifiers

PMID21876182
PMCPMC3169119

What OpenQuestion holds

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Registered trials

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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.