Evidence map›Paper›PMID 22251432›Full record

ArticleThe FEBS journal2012

Role of α-synuclein penetration into the membrane in the mechanisms of oligomer pore formation.

Igor F Tsigelny, Yuriy Sharikov, Wolfgang Wrasidlo, Tania Gonzalez, Paula A Desplats, Leslie Crews, Brian Spencer, Eliezer Masliah

Abstract read
In one paragraph

Article in The FEBS journal, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 101 papers.

0numbers the graph read from it
0cells of the map it votes in
101citing papers in PubMed
6.0field-weighted citation impact, top 4% 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

101 citing papers in PubMed, 170 citations in OpenAlex.

  1. Article
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  12. Associations Between Diabetes Mellitus and Neurodegenerative Diseases.International journal of molecular sciences · 2025
    Review
  13. Review
  14. The Contribution of Type 2 Diabetes to Parkinson's Disease Aetiology.International journal of molecular sciences · 2024
    Review
  15. Liquid-liquid phase separation and conformational strains ofFrontiers in molecular neuroscience · 2024
    Review
  16. International journal of molecular sciences · 2023
    Review
  17. Article
  18. Article
  19. Review
  20. Article

41 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.

Igor F TsigelnySan Diego Supercomputer Center, University of California, San Diego, La Jolla, CA, USA.
Yuriy Sharikov
Wolfgang Wrasidlo
Tania Gonzalez
Paula A Desplats
Leslie Crews
Brian Spencer
Eliezer Masliah
University of California, San Diego · USSan Diego Supercomputer Center · US

Funding

Tissue Culture CoreP01AG022074 · NIA · J. DAVID GLADSTONE INSTITUTES · PI MASLIAH, ELIEZER · 2003 to 2012
$27.0M
B-Synuclein as a Treatment for Lewy Body DiseaseR01AG018440 · NIA · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI RISSMAN, ROBERT · 2001 to 2021
$5.2M
Capacitative Ca2+ Entry in Pulmonary Myocyte GrowthR01HL066012 · NHLBI · UNIVERSITY OF ILLINOIS AT CHICAGO · PI YUAN, JASON X J · 2002 to 2016
$5.2M
Transgenic Models to Study Alzheimer's DiseaseR37AG011385 · NIA · J. DAVID GLADSTONE INSTITUTES · PI MUCKE, LENNART · 2002 to 2011
$4.9M
Project-002P30NS076411 · NINDS · SCINTILLON INSTITUTE FOR PHOTOBIOLOGY · PI LIPTON, STUART A · 2011 to 2016
$4.5M
TRANSGENIC MODELS TO SUDY ALZHEIMERS DISEASER01AG011385 · NIA · SCRIPPS RESEARCH INSTITUTE · PI MUCKE, LENNART · 1992 to 2017
$3.2M
a-synuclein clearance strategies for the treatment of Lewy body disease.R37AG018440 · NIA · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI MASLIAH, ELIEZER · 2006 to 2014
$2.7M
NHLBI NIH HHS HL066012NHLBI NIH HHS R01 HL066012NIA NIH HHS AG022074NIA NIH HHS AG11385NIA NIH HHS AG18440NIA NIH HHS P01 AG022074NIA NIH HHS R01 AG018440NIA NIH HHS R37 AG018440NINDS NIH HHS P30 NS076411PHS HHS NSO44233
6 · The paper itself

Abstract

Parkinson's disease (PD) and dementia with Lewy bodies are common disorders of the aging population and characterized by the progressive accumulation of α-synuclein (α-syn) in the central nervous system. Aggregation of α-syn into oligomers with a ring-like appearance has been proposed to play a role in toxicity. However, the molecular mechanisms and the potential sequence of events involved in the formation of pore-like structures are unclear. We utilized computer modeling and cell-based studies to investigate the process of oligomerization of wild-type and A53T mutant α-syn in membranes. The studies suggest that α-syn penetrates the membrane rapidly, changing its conformation from α-helical towards a coiled structure. This penetration facilitates the incorporation of additional α-syn monomers in the complex, and the subsequent displacement of phospholipids and the formation of oligomers in the membrane. This process occurred more rapidly, and with a more favorable energy of interaction, for mutant A53T compared with wild-type α-syn. After 4 ns of simulation of the protein-membrane model, α-syn had penetrated through two-thirds of the membrane. By 9 ns, the penetration of the annular α-syn oligomers can result in the formation of pore-like structures that fully perforate the lipid bilayer. Experimental incubation of recombinant α-syn in synthetic membranes resulted in the formation of similar pore-like complexes. Moreover, mutant (A53T) α-syn had a greater tendency to accumulate in neuronal membrane fractions in cell cultures, resulting in greater neuronal permeability, as demonstrated with the calcein efflux assay. These studies provide a sequential molecular explanation for the process of α-syn oligomerization in the membrane, and support the role of formation of pore-like structures in the pathogenesis of the neurodegenerative process in PD.

Indexed as

alpha-SynucleinAnimalsCell MembraneLewy Body DiseaseLipid BilayersNeuronsParkinson DiseaseProtein Structure, SecondaryRatsTumor Cells, Culturedalpha-SynucleinLipid Bilayers

Identifiers

PMID22251432
PMCPMC3925782
OpenAlexW1535963221

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.