Evidence map›Paper›PMID 17576799›Full record

ArticleThe Journal of cell biology2007

Beta1 integrin activates Rac1 in Schwann cells to generate radial lamellae during axonal sorting and myelination.

Alessandro Nodari, Desirée Zambroni, Angelo Quattrini, Felipe A Court, Alessandra D'Urso, Alessandra Recchia, Victor L J Tybulewicz, Lawrence Wrabetz, M Laura Feltri

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of cell biology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 111 papers.

0numbers the graph read from it
0cells of the map it votes in
111citing papers in PubMed
4.1field-weighted citation impact, top 5% 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

111 citing papers in PubMed, 187 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. Review
  8. Schwann Cell Development and Myelination.Cold Spring Harbor perspectives in biology · 2024
    Review
  9. Article
  10. Peripheral glia diversity.Journal of anatomy · 2022
    Review
  11. Review
  12. Article
  13. Article
  14. Peripheral Nerve Development and the Pathogenesis of Peripheral Neuropathy: the Sorting Point.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2021
    Review
  15. Review
  16. Review
  17. Article
  18. Article
  19. Review
  20. αGlia · 2021
    Article

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

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors at 2 institutions in 1 country.

Alessandro NodariDepartment of Biological and Technological Research, San Raffaele Scientific Institute, 20132 Milan, Italy.
Desirée Zambroni
Angelo Quattrini
Felipe A Court
Alessandra D'Urso
Alessandra Recchia
Victor L J Tybulewicz
Lawrence Wrabetz
M Laura Feltri
San Raffaele University of Rome · ITUniversity of Modena and Reggio Emilia · IT

Funding

Laminin Receptors and Signals in Schwann CellsR01NS045630 · NINDS · STATE UNIVERSITY OF NEW YORK AT BUFFALO · PI SIM, FRASER JAMES · 2003 to 2024
$5.9M
Pathogenesis of Myelin Protein Zero Neuropathies in Transgenic MiceR01NS055256 · NINDS · ISTITUTO SCIENTIFICO SAN RAFFAELE · PI WRABETZ, LAWRENCE · 2006 to 2010
$1.2M
Medical Research Council MC_U117527252NINDS NIH HHS NS045630NINDS NIH HHS NS055256NINDS NIH HHS R01 NS045630NINDS NIH HHS R01 NS055256Telethon GGP030074
6 · The paper itself

Abstract

Myelin is a multispiraled extension of glial membrane that surrounds axons. How glia extend a surface many-fold larger than their body is poorly understood. Schwann cells are peripheral glia and insert radial cytoplasmic extensions into bundles of axons to sort, ensheath, and myelinate them. Laminins and beta1 integrins are required for axonal sorting, but the downstream signals are largely unknown. We show that Schwann cells devoid of beta1 integrin migrate to and elongate on axons but cannot extend radial lamellae of cytoplasm, similar to cells with low Rac1 activation. Accordingly, active Rac1 is decreased in beta1 integrin-null nerves, inhibiting Rac1 activity decreases radial lamellae in Schwann cells, and ablating Rac1 in Schwann cells of transgenic mice delays axonal sorting and impairs myelination. Finally, expressing active Rac1 in beta1 integrin-null nerves improves sorting. Thus, increased activation of Rac1 by beta1 integrins allows Schwann cells to switch from migration/elongation to the extension of radial membranes required for axonal sorting and myelination.

Indexed as

AxonsMyelin SheathAnimalsCell MovementCell Surface ExtensionsIntegrin beta1LamininMiceMice, TransgenicNeuropeptidesrac1 GTP-Binding Proteinrac GTP-Binding ProteinsRatsSchwann CellsIntegrin beta1LamininNeuropeptidesrac1 GTP-Binding ProteinRac1 protein, mouseRac1 protein, ratrac GTP-Binding Proteins

Identifiers

PMID17576799
PMCPMC2064366
OpenAlexW2012896016

What OpenQuestion holds

Textmetadata
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.