Evidence map›Paper›PMID 34612142›Full record

ArticleAutophagy2022

LGALS3 (galectin 3) mediates an unconventional secretion of SNCA/α-synuclein in response to lysosomal membrane damage by the autophagic-lysosomal pathway in human midbrain dopamine neurons.

Kevin Burbidge, David J Rademacher, Jessica Mattick, Stephanie Zack, Andrea Grillini, Luc Bousset, Ochan Kwon, Konrad Kubicki, Alexander Simon, Ronald Melki and 1 more

Open access · bronzeAbstract read
In one paragraph

Article in Autophagy, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed
5.9field-weighted citation impact, top 3% 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

43 citing papers in PubMed, 67 citations in OpenAlex.

  1. Article
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  11. Pleiotropic regulatory mechanisms and targeted therapeutic prospects of Galectin-3 in aging-related diseases.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2025
    Review
  12. Article
  13. Review
  14. Endocytic tethers modulate unconventional GAPDH secretion.Cell surface (Amsterdam, Netherlands) · 2025
    Article
  15. Article
  16. Review
  17. Review
  18. Article
  19. Article
  20. Lysosome quality control in health and neurodegenerative diseases.Cellular & molecular biology letters · 2024
    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

11 authors at 2 institutions in 2 countries.

Kevin BurbidgeGraduate Program in Neuroscience, Stritch School of Medicine, Loyola University Chicago, Maywood, Illinois, USA.
David J RademacherCore Imaging Facility and Department of Microbiology and Immunology, Loyola University of Chicago, Maywood, Illinois, USA.
Jessica MattickDepartment of Microbiology and Immunology, Stritch School of Medicine, Loyola University, Chicago, Maywood, Illinois, USA.
Stephanie ZackDepartment of Microbiology and Immunology, Stritch School of Medicine, Loyola University, Chicago, Maywood, Illinois, USA.
Andrea GrilliniStritch School of Medicine, Loyola University Chicago, Maywood, Illinois, USA.
Luc BoussetInstitut Francois Jacob (Mircen), Cea and Laboratory of Neurodegenerative Diseases, Cnrs, Fontenay-Aux-Roses Cedex, France.
Ochan KwonStritch School of Medicine, Loyola University Chicago, Maywood, Illinois, USA.
Konrad KubickiStritch School of Medicine, Loyola University Chicago, Maywood, Illinois, USA.
Alexander SimonStritch School of Medicine, Loyola University Chicago, Maywood, Illinois, USA.
Ronald MelkiInstitut Francois Jacob (Mircen), Cea and Laboratory of Neurodegenerative Diseases, Cnrs, Fontenay-Aux-Roses Cedex, France.
Edward M CampbellGraduate Program in Neuroscience, Stritch School of Medicine, Loyola University Chicago, Maywood, Illinois, USA.
Loyola University Chicago · USDirection de la Recherche Fondamentale · FR

Funding

Summer Research Experience for Medical Students in Inflammation and Infectious DiseasesT35AI125220 · NIAID · LOYOLA UNIVERSITY CHICAGO · PI Edward M. Campbell, Simon Kaja · 2017 to 2026
$510k
NIAID NIH HHS T35 AI125220
6 · The paper itself

Abstract

Numerous lines of evidence support the premise that the misfolding and subsequent accumulation of SNCA/α-synuclein (synuclein alpha) is responsible for the underlying neuronal pathology observed in Parkinson disease (PD) and other synucleinopathies. Moreover, the cell-to-cell transfer of these misfolded SNCA species is thought to be responsible for disease progression and the spread of cellular pathology throughout the brain. Previous work has shown that when exogenous, misfolded SNCA fibrils enter cells through endocytosis, they can damage and rupture the membranes of their endocytotic vesicles in which they are trafficked. Rupture of these vesicular membranes exposes intralumenal glycans leading to galectin protein binding, subsequent autophagic protein recruitment, and, ultimately, their introduction into the autophagic-lysosomal pathway. Increasing evidence indicates that both pathological and non-pathological SNCA species undergo autophagy-dependent unconventional secretion. While other proteins have also been shown to be secreted from cells by autophagy, what triggers this release process and how these specific proteins are recruited to a secretory autophagic pathway is largely unknown. Here, we use a human midbrain dopamine (mDA) neuronal culture model to provide evidence in support of a cellular mechanism that explains the cell-to-cell transfer of pathological forms of SNCA that are observed in PD. We demonstrate that LGALS3 (galectin 3) mediates the release of SNCA following vesicular damage. SNCA release is also dependent on TRIM16 (tripartite motif containing 16) and ATG16L1 (autophagy related 16 like 1), providing evidence that secretion of SNCA is mediated by an autophagic secretory pathway.

Indexed as

alpha-SynucleinDopaminergic NeuronsGalectin 3Parkinson DiseaseAutophagyBlood ProteinsGalectinsHumansLysosomesMesencephalonTripartite Motif ProteinsUbiquitin-Protein Ligasesalpha-SynucleinBlood ProteinsGalectin 3GalectinsLGALS3 protein, humanSNCA protein, humanTRIM16 protein, humanTripartite Motif ProteinsUbiquitin-Protein Ligasesalpha-synuclein (synuclein alpha)Autophagyextracellular vesiclesgalectinsinduced pluripotent stem cellslysosomesParkinson diseasetripartite motif proteinsunconventional secretion

Identifiers

PMID34612142
PMCPMC9196737
OpenAlexW3203274698

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.