Evidence map›Paper›PMID 32414928›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2020

Liquid-liquid phase separation of type II diabetes-associated IAPP initiates hydrogelation and aggregation.

Lior Pytowski, Chiu Fan Lee, Alex C Foley, David J Vaux, Létitia Jean

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed, 1 pooled it
–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

39 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. QBP1 Peptide as a Potential Anti-Amyloidogenic Therapy for Type 2 Diabetes: An In Vitro Study.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
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  4. Review
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  9. Review
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  13. Phase Separation and Aggregation of α-Synuclein Diverge at Different Salt Conditions.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2024
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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

5 authors.

Lior PytowskiSir William Dunn School of Pathology, University of Oxford, OX1 3RE Oxford, United Kingdom.ORCID 0000-0002-8530-5123
Chiu Fan LeeDepartment of Bioengineering, Imperial College London, South Kensington Campus, SW7 2AZ London, United Kingdom.ORCID 0000-0003-4363-9050
Alex C FoleySir William Dunn School of Pathology, University of Oxford, OX1 3RE Oxford, United Kingdom.
David J VauxSir William Dunn School of Pathology, University of Oxford, OX1 3RE Oxford, United Kingdom; david.vaux@path.ox.ac.uk.ORCID 0000-0002-4901-9795
Létitia JeanSir William Dunn School of Pathology, University of Oxford, OX1 3RE Oxford, United Kingdom.ORCID 0000-0002-6450-7148

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Amyloidoses (misfolded polypeptide accumulation) are among the most debilitating diseases our aging societies face. Amyloidogenesis can be catalyzed by hydrophobic-hydrophilic interfaces (e.g., air-water interface in vitro [AWI]). We recently demonstrated hydrogelation of the amyloidogenic type II diabetes-associated islet amyloid polypeptide (IAPP), a hydrophobic-hydrophilic interface-dependent process with complex kinetics. We demonstrate that human IAPP undergoes AWI-catalyzed liquid-liquid phase separation (LLPS), which initiates hydrogelation and aggregation. Insulin modulates these processes but does not prevent them. Using nonamyloidogenic rat IAPP, we show that, whereas LLPS does not require the amyloidogenic sequence, hydrogelation and aggregation do. Interestingly, both insulin and rat sequence delayed IAPP LLPS, which may reflect physiology. By developing an experimental setup and analysis tools, we show that, within the whole system (beyond the droplet stage), macroscopic interconnected aggregate clusters form, grow, fuse, and evolve via internal rearrangement, leading to overall hydrogelation. As the AWI-adsorbed gelled layer matures, its microviscosity increases. LLPS-driven aggregation may be a common amyloid feature and integral to pathology.

Indexed as

AmyloidAmyloidogenic ProteinsAmyloidosisAnimalsDiabetes Mellitus, Type 2HydrogelsHydrophobic and Hydrophilic InteractionsInsulinIslet Amyloid PolypeptideProtein AggregatesRatsAmyloidAmyloidogenic ProteinsHydrogelsInsulinIslet Amyloid PolypeptideProtein AggregatesaggregationhydrogelationIAPPinsulinliquid–liquid phase separation

Identifiers

PMID32414928
PMCPMC7275713

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.