Evidence map›Paper›PMID 34555357›Full record

ArticleCell2021

Microglia jointly degrade fibrillar alpha-synuclein cargo by distribution through tunneling nanotubes.

Hannah Scheiblich, Cira Dansokho, Dilek Mercan, Susanne V Schmidt, Luc Bousset, Lena Wischhof, Frederik Eikens, Alexandru Odainic, Jasper Spitzer, Angelika Griep and 5 more

Open access · hybridAbstract read
In one paragraph

Article in Cell, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 230 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
230citing papers in PubMed, 2 pooled it
21.0field-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

230 citing papers in PubMed, 2 syntheses or guidelines pooled it, 327 citations in OpenAlex.

  1. Pooled it
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  10. Multiple system atrophy: cure and care.Journal of neural transmission (Vienna, Austria : 1996) · 2026
    Review
  11. Microglia extract neuronal proteolytic organelles via skoupocytosis.bioRxiv : the preprint server for biology · 2026
    Article
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  20. The molecular architecture of tunneling nanotubes.bioRxiv : the preprint server for biology · 2026
    Article

170 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

15 authors at 3 institutions in 3 countries.

Hannah ScheiblichDepartment of Neurodegenerative Disease and Geriatric Psychiatry/Neurology, University of Bonn Medical Center, 53127 Bonn, Germany; German Center for Neurodegenerative Diseases (DZNE), 53127 Bonn, Germany.
Cira DansokhoDepartment of Neurodegenerative Disease and Geriatric Psychiatry/Neurology, University of Bonn Medical Center, 53127 Bonn, Germany; German Center for Neurodegenerative Diseases (DZNE), 53127 Bonn, Germany.
Dilek MercanDepartment of Neurodegenerative Disease and Geriatric Psychiatry/Neurology, University of Bonn Medical Center, 53127 Bonn, Germany; German Center for Neurodegenerative Diseases (DZNE), 53127 Bonn, Germany.
Susanne V SchmidtInstitute of Innate Immunity, University of Bonn Medical Center, 53127 Bonn, Germany.
Luc BoussetInstitut François Jacob, MIRCen, CEA and Laboratory of Neurodegenerative Diseases, CNRS, 92265 Fontenay-aux-Roses, France.
Lena WischhofGerman Center for Neurodegenerative Diseases (DZNE), 53127 Bonn, Germany.
Frederik EikensDepartment of Neurodegenerative Disease and Geriatric Psychiatry/Neurology, University of Bonn Medical Center, 53127 Bonn, Germany; German Center for Neurodegenerative Diseases (DZNE), 53127 Bonn, Germany.
Alexandru OdainicInstitute of Innate Immunity, University of Bonn Medical Center, 53127 Bonn, Germany.
Jasper SpitzerInstitute of Innate Immunity, University of Bonn Medical Center, 53127 Bonn, Germany.
Angelika GriepGerman Center for Neurodegenerative Diseases (DZNE), 53127 Bonn, Germany.
Stephanie SchwartzDepartment of Neurodegenerative Disease and Geriatric Psychiatry/Neurology, University of Bonn Medical Center, 53127 Bonn, Germany.
Daniele BanoGerman Center for Neurodegenerative Diseases (DZNE), 53127 Bonn, Germany.
Eicke LatzGerman Center for Neurodegenerative Diseases (DZNE), 53127 Bonn, Germany; Institute of Innate Immunity, University of Bonn Medical Center, 53127 Bonn, Germany.
Ronald MelkiInstitut François Jacob, MIRCen, CEA and Laboratory of Neurodegenerative Diseases, CNRS, 92265 Fontenay-aux-Roses, France.
Michael T HenekaDepartment of Neurodegenerative Disease and Geriatric Psychiatry/Neurology, University of Bonn Medical Center, 53127 Bonn, Germany; German Center for Neurodegenerative Diseases (DZNE), 53127 Bonn, Germany; Divison of Infectious Diseases and Immunology, University of Massachusetts Medical School, 01605 Worcester, MA, USA. Electronic address: michael.heneka@ukbonn.de.
University of Bonn · DEGerman Center for Neurodegenerative Diseases · DECentre National de la Recherche Scientifique · FR

Funding

Role of inflammasomes in Alzheimer's DiseaseR01AG059752 · NIA · UNIV OF MASSACHUSETTS MED SCH WORCESTER · PI GOLENBOCK, DOUGLAS T, HENEKA, MICHAEL T · 2018 to 2022
$4.3M
NIA NIH HHS R01 AG059752
6 · The paper itself

Abstract

Microglia are the CNS resident immune cells that react to misfolded proteins through pattern recognition receptor ligation and activation of inflammatory pathways. Here, we studied how microglia handle and cope with α-synuclein (α-syn) fibrils and their clearance. We found that microglia exposed to α-syn establish a cellular network through the formation of F-actin-dependent intercellular connections, which transfer α-syn from overloaded microglia to neighboring naive microglia where the α-syn cargo got rapidly and effectively degraded. Lowering the α-syn burden attenuated the inflammatory profile of microglia and improved their survival. This degradation strategy was compromised in cells carrying the LRRK2 G2019S mutation. We confirmed the intercellular transfer of α-syn assemblies in microglia using organotypic slice cultures, 2-photon microscopy, and neuropathology of patients. Together, these data identify a mechanism by which microglia create an "on-demand" functional network in order to improve pathogenic α-syn clearance.

Indexed as

ProteolysisActinsAgedAged, 80 and overalpha-SynucleinAnimalsApoptosisCell Membrane StructuresCytoskeletonDown-RegulationFemaleHumansInflammationLeucine-Rich Repeat Serine-Threonine Protein Kinase-2MaleMiceActinsalpha-SynucleinLeucine-Rich Repeat Serine-Threonine Protein Kinase-2Protein AggregatesReactive Oxygen SpeciesTunneling Nanotubesalpha-synucleincell-to-cell transferclearancedegradationLRRK2microgliasynucleinopathiestunneling nanotubes

Identifiers

PMID34555357
PMCPMC8527836
OpenAlexW3199862549

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.