Evidence map›Paper›PMID 31533964›Full record

ArticleLife science alliance2019

Mechanistic insights into the protective roles of polyphosphate against amyloid cytotoxicity.

Justine Lempart, Eric Tse, James A Lauer, Magdalena I Ivanova, Alexandra Sutter, Nicholas Yoo, Philipp Huettemann, Daniel Southworth, Ursula Jakob

Open access · goldAbstract read
In one paragraph

Article in Life science alliance, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
1.6field-weighted citation impact, top 17% 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

21 citing papers in PubMed, 27 citations in OpenAlex.

  1. Review
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  5. Article
  6. Review
  7. Polyphosphate: a cellular Swiss army knife.Current opinion in biotechnology · 2025
    Review
  8. Article
  9. Article
  10. Article
  11. The Protein Scaffolding Functions of Polyphosphate.Journal of molecular biology · 2024
    Review
  12. Review
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  14. Article
  15. Article
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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

9 authors at 2 institutions in 2 countries.

Justine LempartGraduate Program in Biochemistry, Department of Chemistry, Technische Universität München, München, Germany.
Eric TseInstitute for Neurodegenerative Diseases, Department of Biochemistry and Biophysics, University of California, San Francisco, CA, USA.
James A LauerDepartment of Molecular, Cellular and Developmental Biology University of Michigan, Ann Arbor, MI, USA.
Magdalena I IvanovaBiophysics Program, University of Michigan, Ann Arbor, MI, USA.ORCID 0000-0002-7290-3327
Alexandra SutterBiophysics Program, University of Michigan, Ann Arbor, MI, USA.ORCID 0000-0003-1410-8605
Nicholas YooDepartment of Molecular, Cellular and Developmental Biology University of Michigan, Ann Arbor, MI, USA.
Philipp HuettemannDepartment of Molecular, Cellular and Developmental Biology University of Michigan, Ann Arbor, MI, USA.
Daniel SouthworthInstitute for Neurodegenerative Diseases, Department of Biochemistry and Biophysics, University of California, San Francisco, CA, USA.
Ursula JakobDepartment of Molecular, Cellular and Developmental Biology University of Michigan, Ann Arbor, MI, USA ujakob@umich.edu.ORCID 0000-0002-4020-4572
University of Michigan · USUniversity of California, San Francisco · US

Funding

Role of Molecular Chaperones in Stress Response and DiseaseR35GM122506 · NIGMS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI Ursula H. Jakob · 2017 to 2026
$6.8M
Role of polyphosphate in Alzheimer's DiseaseR21AG055090 · NIA · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI JAKOB, URSULA H. · 2017 to 2018
$439k
NIA NIH HHS R21 AG055090NIGMS NIH HHS R35 GM122506
6 · The paper itself

Abstract

The universally abundant polyphosphate (polyP) accelerates fibril formation of disease-related amyloids and protects against amyloid cytotoxicity. To gain insights into the mechanism(s) by which polyP exerts these effects, we focused on α-synuclein, a well-studied amyloid protein, which constitutes the major component of Lewy bodies found in Parkinson's disease. Here, we demonstrate that polyP is unable to accelerate the rate-limiting step of α-synuclein fibril formation but effectively nucleates fibril assembly once α-synuclein oligomers are formed. Binding of polyP to α-synuclein either during fibril formation or upon fibril maturation substantially alters fibril morphology and effectively reduces the ability of α-synuclein fibrils to interact with cell membranes. The effect of polyP appears to be α-synuclein fibril specific and successfully prevents the uptake of fibrils into neuronal cells. These results suggest that altering the polyP levels in the extracellular space might be a potential therapeutic strategy to prevent the spreading of the disease.

Indexed as

alpha-SynucleinCell Line, TumorCell MembraneExtracellular SpaceHumansPolyphosphatesProtein BindingProtein Multimerizationalpha-SynucleinPolyphosphatesSNCA protein, human

Identifiers

PMID31533964
PMCPMC6751573
OpenAlexW2974372823

What OpenQuestion holds

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LicenceCC BY
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.