Evidence map›Paper›PMID 23576546›Full record

ArticleMolecular biology of the cell2013

Mutation of SIMPLE in Charcot-Marie-Tooth 1C alters production of exosomes.

Hong Zhu, Sara Guariglia, Raymond Y L Yu, Wenjing Li, Deborah Brancho, Hector Peinado, David Lyden, James Salzer, Craig Bennett, Chi-Wing Chow

Open access · greenAbstract read
In one paragraph

Article in Molecular biology of the cell, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 64 papers.

0numbers the graph read from it
0cells of the map it votes in
64citing papers in PubMed
3.0field-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

64 citing papers in PubMed, 94 citations in OpenAlex.

  1. Review
  2. Extracellular Vesicles and Immune Activation in Solid Organ Transplantation: The Impact of Immunosuppression.BioDrugs : clinical immunotherapeutics, biopharmaceuticals and gene therapy · 2025
    Review
  3. Review
  4. Review
  5. Review
  6. Review
  7. Review
  8. Article
  9. Review
  10. Exosome-Autophagy Crosstalk in Enveloped Virus Infection.International journal of molecular sciences · 2023
    Review
  11. Review
  12. The Machinery of Exosomes: Biogenesis, Release, and Uptake.International journal of molecular sciences · 2023
    Review
  13. Review
  14. Review
  15. Review
  16. The Influence of Proteins on Fate and Biological Role of Circulating DNA.International journal of molecular sciences · 2022
    Review
  17. Review
  18. Article
  19. Review
  20. Review

4 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

10 authors at 5 institutions in 1 country.

Hong ZhuDepartment of Molecular Pharmacology, Albert Einstein College of Medicine, New York, NY 10461, USA.
Sara Guariglia
Raymond Y L Yu
Wenjing Li
Deborah Brancho
Hector Peinado
David Lyden
James Salzer
Craig Bennett
Chi-Wing Chow
Albert Einstein College of Medicine · USCornell University · USCollege of Staten Island · USNYU Langone Health · USUniversity of Washington · US

Funding

Regulation of Schwann cell ensheathment and myelination by type III Neuregulin 1R01NS026001 · NINDS · NEW YORK UNIVERSITY SCHOOL OF MEDICINE · PI SALZER, JAMES · 1988 to 2016
$6.5M
Molecular Signaling in AdipocytesR01DK090481 · NIDDK · ALBERT EINSTEIN COLLEGE OF MEDICINE, INC · PI CHOW, CHI-WING · 2011 to 2014
$1.5M
NIDDK NIH HHS R01 DK090481NINDS NIH HHS R01 NS026001
6 · The paper itself

Abstract

Charcot-Marie-Tooth (CMT) disease is an inherited neurological disorder. Mutations in the small integral membrane protein of the lysosome/late endosome (SIMPLE) account for the rare autosomal-dominant demyelination in CMT1C patients. Understanding the molecular basis of CMT1C pathogenesis is impeded, in part, by perplexity about the role of SIMPLE, which is expressed in multiple cell types. Here we show that SIMPLE resides within the intraluminal vesicles of multivesicular bodies (MVBs) and inside exosomes, which are nanovesicles secreted extracellularly. Targeting of SIMPLE to exosomes is modulated by positive and negative regulatory motifs. We also find that expression of SIMPLE increases the number of exosomes and secretion of exosome proteins. We engineer a point mutation on the SIMPLE allele and generate a physiological mouse model that expresses CMT1C-mutated SIMPLE at the endogenous level. We find that CMT1C mouse primary embryonic fibroblasts show decreased number of exosomes and reduced secretion of exosome proteins, in part due to improper formation of MVBs. CMT1C patient B cells and CMT1C mouse primary Schwann cells show similar defects. Together the data indicate that SIMPLE regulates the production of exosomes by modulating the formation of MVBs. Dysregulated endosomal trafficking and changes in the landscape of exosome-mediated intercellular communications may place an overwhelming burden on the nervous system and account for CMT1C molecular pathogenesis.

Indexed as

Point MutationAllelesAmino Acid MotifsAnimalsBase SequenceBiological TransportB-LymphocytesCell CommunicationCharcot-Marie-Tooth DiseaseDisease Models, AnimalDNA-Binding ProteinsEmbryo, MammalianExosomesFibroblastsGene ExpressionHumansDNA-Binding ProteinsLITAF protein, humanLitaf protein, mouseNuclear ProteinsTranscription Factors

Identifiers

PMID23576546
PMCPMC3667717
OpenAlexW2125240837

What OpenQuestion holds

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LicenceCC BY-NC-SA
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.