Evidence map›Paper›PMID 31306510›Full record

ArticleProtein science : a publication of the Protein Society2019

Characterizing the inhibition of α-synuclein oligomerization by a pharmacological chaperone that prevents prion formation by the protein PrP.

Chunhua Dong, Craig R Garen, Pascal Mercier, Nils O Petersen, Michael T Woodside

Open access · bronzeAbstract read
In one paragraph

Article in Protein science : a publication of the Protein Society, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing 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

6 citing papers in PubMed, 13 citations in OpenAlex.

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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 at 2 institutions in 2 countries.

Chunhua DongDepartment of Physics, University of Alberta, Edmonton, Alberta, Canada.
Craig R GarenDepartment of Physics, University of Alberta, Edmonton, Alberta, Canada.
Pascal MercierNational High Field Nuclear Magnetic Resonance Centre (NANUC), Edmonton, Alberta, Canada.
Nils O PetersenDepartment of Chemistry, University of Alberta, Edmonton, Alberta, Canada.
Michael T WoodsideDepartment of Physics, University of Alberta, Edmonton, Alberta, Canada.ORCID 0000-0003-4695-0397
University of Alberta · CANational High Magnetic Field Laboratory · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Aggregation of the disordered protein α-synuclein into amyloid fibrils is a central feature of synucleinopathies, neurodegenerative disorders that include Parkinson's disease. Small, pre-fibrillar oligomers of misfolded α-synuclein are thought to be the key toxic entities, and α-synuclein misfolding can propagate in a prion-like way. We explored whether a compound with anti-prion activity that can bind to unfolded parts of the protein PrP, the cyclic tetrapyrrole Fe-TMPyP, was also active against α-synuclein aggregation. Observing the initial stages of aggregation via fluorescence cross-correlation spectroscopy, we found that Fe-TMPyP inhibited small oligomer formation in a dose-dependent manner. Fe-TMPyP also inhibited the formation of mature amyloid fibrils in vitro, as detected by thioflavin T fluorescence. Isothermal titration calorimetry indicated Fe-TMPyP bound to monomeric α-synuclein with a stoichiometry of 2, and two-dimensional heteronuclear single quantum coherence NMR spectra revealed significant interactions between Fe-TMPyP and the C-terminus of the protein. These results suggest commonalities among aggregation mechanisms for α-synuclein and the prion protein may exist that can be exploited as therapeutic targets.

Indexed as

alpha-SynucleinAmyloidBinding SitesDose-Response Relationship, DrugHumansMetalloporphyrinsPrion ProteinsProtein Multimerization5,10,15,20-tetrakis(N-methyl-4'-pyridyl)porphyrinato-iron(III)alpha-SynucleinAmyloidMetalloporphyrinsPrion Proteinscyclic tetrapyrrolefluorescence cross-correlation spectroscopyisothermal titration calorimetryprotein aggregation

Identifiers

PMID31306510
PMCPMC6699102
OpenAlexW2962329053

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.