Evidence map›Paper›PMID 28610619›Full record

ArticleMolecular brain2017

Amyotrophic lateral sclerosis patient iPSC-derived astrocytes impair autophagy via non-cell autonomous mechanisms.

Martin Madill, Katya McDonagh, Jun Ma, Alice Vajda, Paul McLoughlin, Timothy O'Brien, Orla Hardiman, Sanbing Shen

Open access · goldAbstract read
In one paragraph

Article in Molecular brain, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 83 papers.

0numbers the graph read from it
0cells of the map it votes in
83citing papers in PubMed
9.7field-weighted citation impact, top 1% 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

83 citing papers in PubMed, 132 citations in OpenAlex.

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  14. Molecular hallmarks of ageing in amyotrophic lateral sclerosis.Cellular and molecular life sciences : CMLS · 2024
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  19. Therapeutic targeting of ALS pathways: Refocusing an incomplete picture.Annals of clinical and translational neurology · 2023
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23 more citing papers are in PubMed but not listed here.

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

8 authors at 2 institutions in 1 country.

Martin MadillRegenerative Medicine Institute (REMEDI), School of Medicine, National University of Ireland Galway, Galway, Ireland.
Katya McDonaghRegenerative Medicine Institute (REMEDI), School of Medicine, National University of Ireland Galway, Galway, Ireland.
Jun MaRegenerative Medicine Institute (REMEDI), School of Medicine, National University of Ireland Galway, Galway, Ireland.
Alice VajdaAcademic Unit of Neurology, Trinity Biomedical Sciences Institute, Trinity College Dublin, 152-160 Pearse Street, Dublin 2, Ireland.
Paul McLoughlinRegenerative Medicine Institute (REMEDI), School of Medicine, National University of Ireland Galway, Galway, Ireland.
Timothy O'BrienRegenerative Medicine Institute (REMEDI), School of Medicine, National University of Ireland Galway, Galway, Ireland.
Orla HardimanAcademic Unit of Neurology, Trinity Biomedical Sciences Institute, Trinity College Dublin, 152-160 Pearse Street, Dublin 2, Ireland. orla@hardiman.net.
Sanbing ShenRegenerative Medicine Institute (REMEDI), School of Medicine, National University of Ireland Galway, Galway, Ireland. sanbing.shen@nuigalway.ie.
Ollscoil na Gaillimhe – University of Galway · IETrinity College Dublin · IE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Amyotrophic lateral sclerosis, a devastating neurodegenerative disease, is characterized by the progressive loss of motor neurons and the accumulation of misfolded protein aggregates. The latter suggests impaired proteostasis may be a key factor in disease pathogenesis, though the underlying mechanisms leading to the accumulation of aggregates is unclear. Further, recent studies have indicated that motor neuron cell death may be mediated by astrocytes. Herein we demonstrate that ALS patient iPSC-derived astrocytes modulate the autophagy pathway in a non-cell autonomous manner. We demonstrate cells treated with patient derived astrocyte conditioned medium demonstrate decreased expression of LC3-II, a key adapter protein required for the selective degradation of p62 and ubiquitinated proteins targeted for degradation. We observed an increased accumulation of p62 in cells treated with patient conditioned medium, with a concomitant increase in the expression of SOD1, a protein associated with the development of ALS. Activation of autophagic mechanisms with Rapamycin reduces the accumulation of p62 puncta in cells treated with patient conditioned medium. These data suggest that patient astrocytes may modulate motor neuron cell death by impairing autophagic mechanisms, and the autophagy pathway may be a useful target in the development of novel therapeutics.

Indexed as

AutophagyAmyotrophic Lateral SclerosisAnimalsAstrocytesAutophagy-Related ProteinsCell SurvivalCellular ReprogrammingCulture Media, ConditionedFemaleHEK293 CellsHumansInduced Pluripotent Stem CellsMaleMiceMiddle AgedMotor NeuronsAutophagy-Related ProteinsCulture Media, ConditionedSequestosome-1 ProteinSirolimusSQSTM1 protein, humanSuperoxide Dismutase-1

Identifiers

PMID28610619
PMCPMC5470320
OpenAlexW2624682934

What OpenQuestion holds

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Registered trials

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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.