Evidence map›Paper›PMID 21304885›Full record

ArticlePLoS pathogens2011

In situ photodegradation of incorporated polyanion does not alter prion infectivity.

Justin R Piro, Brent T Harris, Surachai Supattapone

Open access · goldAbstract readEvaluation Study
In one paragraph

Article in PLoS pathogens, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
1.6field-weighted citation impact, top 18% 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

14 citing papers in PubMed, 22 citations in OpenAlex.

  1. Cofactor molecules: Essential partners for infectious prions.Progress in molecular biology and translational science · 2020
    Review
  2. Review
  3. Article
  4. Molecular dynamics simulations of early steps in RNA-mediated conversion of prions.Protein science : a publication of the Protein Society · 2017
    Article
  5. Prion Strain Diversity.Cold Spring Harbor perspectives in medicine · 2016
    Review
  6. Article
  7. Article
  8. Changes in prion replication environment cause prion strain mutation.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2013
    Article
  9. Role of lipid in forming an infectious prion?Acta biochimica et biophysica Sinica · 2013
    Review
  10. Cofactor molecules maintain infectious conformation and restrict strain properties in purified prions.Proceedings of the National Academy of Sciences of the United States of America · 2012
    Article
  11. Review
  12. Article
  13. Review
  14. Review
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 at 1 institution in 1 country.

Justin R PiroDepartment of Biochemistry, Dartmouth Medical School, Hanover, New Hampshire, USA.
Brent T Harris
Surachai Supattapone
Dartmouth College · US

Funding

HOST-MICROBE INTERACTIONST32AI007519 · NIAID · DARTMOUTH COLLEGE · PI DEBORAH A HOGAN · 1997 to 2026
$5.9M
Origin and Mechanism of Promiscuous Prion StrainsR01NS046478 · NINDS · DARTMOUTH COLLEGE · PI SUPATTAPONE, SURACHAI · 2004 to 2017
$5.0M
Biochemistry of Infectious PrionsR01NS055875 · NINDS · DARTMOUTH COLLEGE · PI SUPATTAPONE, SURACHAI · 2007 to 2011
$1.4M
NIAID NIH HHS T32 AI007519NINDS NIH HHS 2R01 NS046478NINDS NIH HHS R01 NS046478NINDS NIH HHS R01 NS055875
6 · The paper itself

Abstract

Single-stranded polyanions ≥40 bases in length facilitate the formation of hamster scrapie prions in vitro, and polyanions co-localize with PrP(Sc) aggregates in vivo. To test the hypothesis that intact polyanionic molecules might serve as a structural backbone essential for maintaining the infectious conformation(s) of PrP(Sc), we produced synthetic prions using a photocleavable, 100-base oligonucleotide (PC-oligo). In serial Protein Misfolding Cyclic Amplification (sPMCA) reactions using purified PrP(C) substrate, PC-oligo was incorporated into physical complexes with PrP(Sc) molecules that were resistant to benzonase digestion. Exposure of these nuclease-resistant prion complexes to long wave ultraviolet light (315 nm) induced degradation of PC-oligo into 5 base fragments. Light-induced photolysis of incorporated PC-oligo did not alter the infectivity of in vitro-generated prions, as determined by bioassay in hamsters and brain homogenate sPMCA assays. Neuropathological analysis also revealed no significant differences in the neurotropism of prions containing intact versus degraded PC-oligo. These results show that polyanions >5 bases in length are not required for maintaining the infectious properties of in vitro-generated scrapie prions, and indicate that such properties are maintained either by short polyanion remnants, other co-purified cofactors, or by PrP(Sc) molecules alone.

Indexed as

PhotolysisAnimalsBase SequenceBrain StemCricetinaeFemaleHippocampusLightMesocricetusModels, BiologicalPolyelectrolytesPolymersPoly TPrionsProtein FoldingScrapiePolyelectrolytesPolymersPoly TPrions

Identifiers

PMID21304885
PMCPMC3033378
OpenAlexW2008973197

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.