Evidence map›Paper›PMID 26070139›Full record

ArticlePloS one2015

Structure-Based Peptide Design to Modulate Amyloid Beta Aggregation and Reduce Cytotoxicity.

Jitendra Kumar, Risa Namsechi, Valerie L Sim

Abstract read
In one paragraph

Article in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
–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

23 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. Article
  20. Article
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

3 authors.

Jitendra KumarCentre for Prions and Protein Folding Diseases, University of Alberta, Edmonton, Alberta, Canada; Department of Medicine (Neurology), University of Alberta, Edmonton, Alberta, Canada.
Risa NamsechiCentre for Prions and Protein Folding Diseases, University of Alberta, Edmonton, Alberta, Canada; Department of Medicine (Neurology), University of Alberta, Edmonton, Alberta, Canada.
Valerie L SimCentre for Prions and Protein Folding Diseases, University of Alberta, Edmonton, Alberta, Canada; Department of Medicine (Neurology), University of Alberta, Edmonton, Alberta, Canada; Neurosciences and Mental Health Institute, University of Alberta, Edmonton, Alberta, Canada.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The deposition of Aβ peptide in the brain is the key event in Alzheimer disease progression. Therefore, the prevention of Aβ self assembly into disease-associated oligomers is a logical strategy for treatment. π stacking is known to provide structural stability to many amyloids; two phenylalanine residues within the Aβ 14-23 self recognition element are in such an arrangement in many solved structures. Therefore, we targeted this structural stacking by substituting these two phenylalanine residues with their D-enantiomers. The resulting peptides were able to modulate Aβ aggregation in vitro and reduce Aβ cytotoxicity in primary neuronal cultures. Using kinetic analysis of fibril formation, electron microscopy and dynamic light scattering characterization of oligomer size distributions, we demonstrate that, in addition to altering fibril structural characteristics, these peptides can induce the formation of larger amorphous aggregates which are protective against toxic oligomers, possibly because they are able to sequester the toxic oligomers during co-incubation. Alternatively, they may alter the surface structure of the oligomers such that they can no longer interact with cells to induce toxic pathways.

Indexed as

Drug DesignQuantitative Structure-Activity RelationshipAmyloid beta-PeptidesHumansKineticsModels, MolecularPeptide FragmentsProtein AggregatesProtein Aggregation, PathologicalProtein ConformationProtein MultimerizationAmyloid beta-PeptidesPeptide FragmentsProtein Aggregates

Identifiers

PMID26070139
PMCPMC4466325

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.