Evidence map›Paper›PMID 27532547›Full record

ArticlePloS one2016

A Robust and Efficient Production and Purification Procedure of Recombinant Alzheimers Disease Methionine-Modified Amyloid-β Peptides.

Marie Hoarau, Yannick Malbert, Romain Irague, Christelle Hureau, Peter Faller, Emmanuel Gras, Isabelle André, Magali Remaud-Siméon

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in PloS one, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
0.8field-weighted citation impact, top 25% 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, 10 citations in OpenAlex.

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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 4 institutions in 1 country.

Marie HoarauLaboratoire d'Ingénierie des Systèmes Biologiques et Procédés, Université de Toulouse, CNRS, INRA, INSA, Toulouse, France.
Yannick MalbertLaboratoire d'Ingénierie des Systèmes Biologiques et Procédés, Université de Toulouse, CNRS, INRA, INSA, Toulouse, France.
Romain IragueLaboratoire d'Ingénierie des Systèmes Biologiques et Procédés, Université de Toulouse, CNRS, INRA, INSA, Toulouse, France.
Christelle HureauLaboratoire de Chimie de Coordination, CNRS, Université de Toulouse, INPT, Toulouse, France.
Peter FallerLaboratoire de Chimie de Coordination, CNRS, Université de Toulouse, INPT, Toulouse, France.
Emmanuel GrasLaboratoire de Chimie de Coordination, CNRS, Université de Toulouse, INPT, Toulouse, France.
Isabelle AndréLaboratoire d'Ingénierie des Systèmes Biologiques et Procédés, Université de Toulouse, CNRS, INRA, INSA, Toulouse, France.
Magali Remaud-SiméonLaboratoire d'Ingénierie des Systèmes Biologiques et Procédés, Université de Toulouse, CNRS, INRA, INSA, Toulouse, France.
Laboratoire d'Ingénierie des Systèmes Biologiques et des Procédés · FRUniversité Fédérale de Toulouse Midi-Pyrénées · FRInstitut National Polytechnique de Toulouse · FRLaboratoire de Chimie de Coordination · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

An improved production and purification method for Alzheimer's disease related methionine-modified amyloid-β 1-40 and 1-42 peptides is proposed, taking advantage of the formation of inclusion body in Escherichia coli. A Thioflavin-S assay was set-up to evaluate inclusion body formation during growth and optimize culture conditions for amyloid-β peptides production. A simple and fast purification protocol including first the isolation of the inclusion bodies and second, two cycles of high pH denaturation/ neutralization combined with an ultrafiltration step on 30-kDa cut-off membrane was established. Special attention was paid to purity monitoring based on a rational combination of UV spectrophotometry and SDS-PAGE analyses at the various stages of the process. It revealed that this chromatography-free protocol affords good yield of high quality peptides in term of purity. The resulting peptides were fully characterized and are appropriate models for highly reproducible in vitro aggregation studies.

Indexed as

Alzheimer DiseaseAmyloid beta-PeptidesBenzothiazolesElectrophoresis, Polyacrylamide GelEscherichia coliHumansInclusion BodiesMethioninePeptide FragmentsRecombinant ProteinsSpectrophotometry, UltravioletStaining and LabelingThiazolesAmyloid beta-Peptidesamyloid beta-protein (1-40)amyloid beta-protein (1-42)BenzothiazolesMethioninePeptide FragmentsRecombinant ProteinsThiazolesthioflavin T

Identifiers

PMID27532547
PMCPMC4988814
OpenAlexW2507595737

What OpenQuestion holds

Textmetadata
LicenceCC BY
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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.