Evidence map›Paper›PMID 33951536›Full record

ArticleProgress in neurobiology2021

α-synuclein aggregates induce c-Abl activation and dopaminergic neuronal loss by a feed-forward redox stress mechanism.

Soumitra Ghosh, Seok Joon Won, Jiejie Wang, Rebecca Fong, Nicholas J M Butler, Arianna Moss, Candance Wong, June Pan, Jennifer Sanchez, Annie Huynh and 3 more

Open access · greenAbstract read
In one paragraph

Article in Progress in neurobiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 2 pooled it
2.7field-weighted citation impact, top 8% 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

26 citing papers in PubMed, 2 syntheses or guidelines pooled it, 41 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Review
  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. Review
  17. Review
  18. Article
  19. Review
  20. 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

13 authors at 3 institutions in 1 country.

Soumitra GhoshDepartment of Neurology, University of California San Francisco, United States; Neurology Service, San Francisco Veterans Affairs Health Care System, United States.
Seok Joon WonDepartment of Neurology, University of California San Francisco, United States; Neurology Service, San Francisco Veterans Affairs Health Care System, United States.
Jiejie WangDepartment of Neurology, University of California San Francisco, United States; Neurology Service, San Francisco Veterans Affairs Health Care System, United States.
Rebecca FongDepartment of Neurology, University of California San Francisco, United States; Neurology Service, San Francisco Veterans Affairs Health Care System, United States.
Nicholas J M ButlerDepartment of Neurology, University of California San Francisco, United States; Neurology Service, San Francisco Veterans Affairs Health Care System, United States.
Arianna MossDepartment of Neurology, University of California San Francisco, United States; Neurology Service, San Francisco Veterans Affairs Health Care System, United States.
Candance WongDepartment of Neurology, University of California San Francisco, United States; Neurology Service, San Francisco Veterans Affairs Health Care System, United States.
June PanDepartment of Neurology, University of California San Francisco, United States; Neurology Service, San Francisco Veterans Affairs Health Care System, United States.
Jennifer SanchezDepartment of Neurology, University of California San Francisco, United States; Neurology Service, San Francisco Veterans Affairs Health Care System, United States.
Annie HuynhDepartment of Neurology, University of California San Francisco, United States; Neurology Service, San Francisco Veterans Affairs Health Care System, United States.
Long WuDepartment of Neurology, University of California San Francisco, United States; Neurology Service, San Francisco Veterans Affairs Health Care System, United States.
Fredric P ManfredssonParkinson's Disease Research Unit, Department of Neurobiology, Barrow Neurological Institute, Phoenix, AZ, 85013, United States.
Raymond A SwansonDepartment of Neurology, University of California San Francisco, United States; Neurology Service, San Francisco Veterans Affairs Health Care System, United States. Electronic address: raymond.swanson@ucsf.edu.
University of California, San Francisco · USBarrow Neurological Institute · USSan Francisco VA Medical Center · US

Funding

Clinical and Translational Science InstituteUL1TR001872 · NCATS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI COLLARD, HAROLD R, JACOBY, VANESSA · 2016 to 2025
$112.1M
SF BUILD: Enabling Students to Represent in ScienceTL4GM118986 · NIGMS · SAN FRANCISCO STATE UNIVERSITY · PI MARQUEZ-MAGANA, LETICIA MARIA, MORRIS, MEGHAN D · 2015 to 2022
$5.4M
Gut-Brain Axis in Alzheimer's DiseaseR01DK108798 · NIDDK · ST. JOSEPH'S HOSPITAL AND MEDICAL CENTER · PI MANFREDSSON, FREDRIC · 2017 to 2021
$2.1M
Integrating pathogenic mechanisms in Parkinson's diseaseR01NS105774 · NINDS · NORTHERN CALIFORNIA INSTITUTE/RES/EDU · PI SWANSON, RAYMOND A · 2018 to 2022
$1.8M
Thiol repletion therapy for Parkinson's diseaseI01BX003249 · VA · VETERANS AFFAIRS MED CTR SAN FRANCISCO · PI SWANSON, RAYMOND A · 2017 to 2020
–
BLRD VA I01 BX003249NCATS NIH HHS UL1 TR001872NIDDK NIH HHS R01 DK108798NIGMS NIH HHS TL4 GM118986NINDS NIH HHS R01 NS105774
6 · The paper itself

Abstract

Oxidative stress and α-synuclein aggregation both drive neurodegeneration in Parkinson's disease, and the protein kinase c-Abl provides a potential amplifying link between these pathogenic factors. Suppressing interactions between these factors may thus be a viable therapeutic approach for this disorder. To evaluate this possibility, pre-formed α-synuclein fibrils (PFFs) were used to induce α-synuclein aggregation in neuronal cultures. Exposure to PFFs induced oxidative stress and c-Abl activation in wild-type neurons. By contrast, α-synuclein - deficient neurons, which cannot form α-synuclein aggregates, failed to exhibit either oxidative stress or c-Abl activation. N-acetyl cysteine, a thiol repletion agent that supports neuronal glutathione metabolism, suppressed the PFF - induced redox stress and c-Abl activation in the wild-type neurons, and likewise suppressed α-synuclein aggregation. Parallel findings were observed in mouse brain: PFF-induced α-synuclein aggregation in the substantia nigra was associated with redox stress, c-Abl activation, and dopaminergic neuronal loss, along with microglial activation and motor impairment, all of which were attenuated with oral N-acetyl cysteine. Similar results were obtained using AAV-mediated α-synuclein overexpression as an alternative means of driving α-synuclein aggregation in vivo. These findings show that α-synuclein aggregates induce c-Abl activation by a redox stress mechanism. c-Abl activation in turn promotes α-synuclein aggregation, in a feed-forward interaction. The capacity of N-acetyl cysteine to interrupt this interaction adds mechanistic support its consideration as a therapeutic in Parkinson's disease.

Indexed as

alpha-SynucleinParkinson DiseaseAnimalsCysteineDopamineDopaminergic NeuronsMiceOxidation-ReductionSubstantia Nigraalpha-SynucleinCysteineDopamineExcitatory amino acid transporter 3Gene-Environment interactionGlutathioneParkinson’s diseaseSLC1A1

Identifiers

PMID33951536
PMCPMC8210833
OpenAlexW3158344187

What OpenQuestion holds

Textmetadata
LicenceTDM
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.