Evidence map›Paper›PMID 21209925›Full record

ArticlePloS one2010

Prion protein misfolding affects calcium homeostasis and sensitizes cells to endoplasmic reticulum stress.

Mauricio Torres, Karen Castillo, Ricardo Armisén, Andrés Stutzin, Claudio Soto, Claudio Hetz

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in PloS one, 2010. 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 51 papers.

0numbers the graph read from it
0cells of the map it votes in
51citing papers in PubMed
3.5field-weighted citation impact, top 7% 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

51 citing papers in PubMed, 86 citations in OpenAlex.

  1. Article
  2. Article
  3. Modeling neurodegenerative and neurodevelopmental disorders in theLearning & memory (Cold Spring Harbor, N.Y.) · 2024
    Review
  4. Review
  5. Article
  6. Astrocyte in prion disease: a double-edged sword.Neural regeneration research · 2022
    Review
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 3 institutions in 2 countries.

Mauricio TorresCenter for Molecular Studies of the Cell, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, Santiago, Chile.
Karen Castillo
Ricardo Armisén
Andrés Stutzin
Claudio Soto
Claudio Hetz
University of Chile · CLNeurounion Biomedical Foundation · CLThe University of Texas Health Science Center at Houston · US

Funding

NINDS NIH HHS R01 NS05349
6 · The paper itself

Abstract

Prion-related disorders (PrDs) are fatal neurodegenerative disorders characterized by progressive neuronal impairment as well as the accumulation of an abnormally folded and protease resistant form of the cellular prion protein, termed PrP(RES). Altered endoplasmic reticulum (ER) homeostasis is associated with the occurrence of neurodegeneration in sporadic, infectious and familial forms of PrDs. The ER operates as a major intracellular calcium store, playing a crucial role in pathological events related to neuronal dysfunction and death. Here we investigated the possible impact of PrP misfolding on ER calcium homeostasis in infectious and familial models of PrDs. Neuro2A cells chronically infected with scrapie prions showed decreased ER-calcium content that correlated with a stronger upregulation of UPR-inducible chaperones, and a higher sensitivity to ER stress-induced cell death. Overexpression of the calcium pump SERCA stimulated calcium release and increased the neurotoxicity observed after exposure of cells to brain-derived infectious PrP(RES). Furthermore, expression of PrP mutants that cause hereditary Creutzfeldt-Jakob disease or fatal familial insomnia led to accumulation of PrP(RES) and their partial retention at the ER, associated with a drastic decrease of ER calcium content and higher susceptibility to ER stress. Finally, similar results were observed when a transmembrane form of PrP was expressed, which is proposed as a neurotoxic intermediate. Our results suggest that alterations in calcium homeostasis and increased susceptibility to ER stress are common pathological features of both infectious and familial PrD models.

Indexed as

AnimalsCalciumCell MembraneCreutzfeldt-Jakob SyndromeEndoplasmic ReticulumHomeostasisHumansMiceMolecular ChaperonesPrionsProtein DenaturationProtein FoldingSarcoplasmic Reticulum Calcium-Transporting ATPasesScrapieUp-RegulationCalciumMolecular ChaperonesPrionsSarcoplasmic Reticulum Calcium-Transporting ATPases

Identifiers

PMID21209925
PMCPMC3012133
OpenAlexW2147009403

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.