Evidence map›Paper›PMID 30952881›Full record

ArticleScientific reports2019

Metabolic resistance of the D-peptide RD2 developed for direct elimination of amyloid-β oligomers.

Anne Elfgen, Michelle Hupert, Kevin Bochinsky, Markus Tusche, Estibaliz González de San Román Martin, Ian Gering, Silvia Sacchi, Loredano Pollegioni, Pitter F Huesgen, Rudolf Hartmann and 3 more

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
2.7field-weighted citation impact, top 11% 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

17 citing papers in PubMed, 28 citations in OpenAlex.

  1. Article
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  3. Ribosomal incorporation of negatively charged d-α- andPhilosophical transactions of the Royal Society of London. Series B, Biological sciences · 2023
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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

13 authors at 2 institutions in 2 countries.

Anne ElfgenInstitute of Complex Systems, Structural Biochemistry (ICS-6), Research Center Jülich, 52428, Jülich, Germany.
Michelle HupertCentral Institute for Engineering, Electronics and Analytics (ZEA-3), Research Center Jülich, 52428, Jülich, Germany.
Kevin BochinskyInstitute of Complex Systems, Structural Biochemistry (ICS-6), Research Center Jülich, 52428, Jülich, Germany.
Markus TuscheInstitute of Complex Systems, Structural Biochemistry (ICS-6), Research Center Jülich, 52428, Jülich, Germany.ORCID http://orcid.org/0000-0003-0530-7469
Estibaliz González de San Román MartinCentral Institute for Engineering, Electronics and Analytics (ZEA-3), Research Center Jülich, 52428, Jülich, Germany.
Ian GeringInstitute of Complex Systems, Structural Biochemistry (ICS-6), Research Center Jülich, 52428, Jülich, Germany.
Silvia SacchiDipartimento di Biotecnologie e Scienze della Vita, Università dell'Insubria, 21100, Varese, Italy.ORCID http://orcid.org/0000-0002-2338-2561
Loredano PollegioniDipartimento di Biotecnologie e Scienze della Vita, Università dell'Insubria, 21100, Varese, Italy.ORCID http://orcid.org/0000-0003-1733-7243
Pitter F HuesgenCentral Institute for Engineering, Electronics and Analytics (ZEA-3), Research Center Jülich, 52428, Jülich, Germany.ORCID http://orcid.org/0000-0002-0335-2242
Rudolf HartmannInstitute of Complex Systems, Structural Biochemistry (ICS-6), Research Center Jülich, 52428, Jülich, Germany.ORCID http://orcid.org/0000-0001-7807-6273
Beatrix Santiago-SchübelCentral Institute for Engineering, Electronics and Analytics (ZEA-3), Research Center Jülich, 52428, Jülich, Germany.
Janine KutzscheInstitute of Complex Systems, Structural Biochemistry (ICS-6), Research Center Jülich, 52428, Jülich, Germany. j.kutzsche@fz-juelich.de.
Dieter WillboldInstitute of Complex Systems, Structural Biochemistry (ICS-6), Research Center Jülich, 52428, Jülich, Germany. d.willbold@fz-juelich.de.ORCID http://orcid.org/0000-0002-0065-7366
Forschungszentrum Jülich · DEUniversity of Insubria · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Alzheimer's disease (AD) is a neurodegenerative disorder leading to dementia. Aggregation of the amyloid-β peptide (Aβ) plays an important role in the disease, with Aβ oligomers representing the most toxic species. Previously, we have developed the Aβ oligomer eliminating therapeutic compound RD2 consisting solely of D-enantiomeric amino acid residues. RD2 has been described to have an oral bioavailability of more than 75% and to improve cognition in transgenic Alzheimer's disease mouse models after oral administration. In the present study, we further examined the stability of RD2 in simulated gastrointestinal fluids, blood plasma and liver microsomes. In addition, we have examined whether RD2 is a substrate for the human D-amino acid oxidase (hDAAO). Furthermore, metabolite profiles of RD2 incubated in human, rodent and non-rodent liver microsomes were compared across species to search for human-specific metabolites that might possibly constitute a threat when applying the compound in humans. RD2 was remarkably resistant against metabolization in all investigated media and not converted by hDAAO. Moreover, RD2 did not influence the activity of any of the tested enzymes. In conclusion, the high stability and the absence of relevant human-specific metabolites support RD2 to be safe for oral administration in humans.

Indexed as

Amyloid beta-PeptidesAnimalsCulture MediaGastrointestinal TractHumansLiverOligopeptidesRatsAmyloid beta-PeptidesCulture MediaOligopeptidesRD2 peptide

Identifiers

PMID30952881
PMCPMC6450887
OpenAlexW2928228510

What OpenQuestion holds

Textmetadata
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.