Evidence map›Paper›PMID 26379503›Full record

ArticleFrontiers in cellular neuroscience2015

Cdc42 and RhoA reveal different spatio-temporal dynamics upon local stimulation with Semaphorin-3A.

Federico Iseppon, Luisa M R Napolitano, Vincent Torre, Dan Cojoc

Open access · goldAbstract read
In one paragraph

Article in Frontiers in cellular neuroscience, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
0.3field-weighted citation impact, top 48% 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

8 citing papers in PubMed, 29 citations in OpenAlex.

  1. Review
  2. Article
  3. Review
  4. Review
  5. Article
  6. Actin dynamics in cell migration.Essays in biochemistry · 2019
    Review
  7. Article
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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

4 authors at 3 institutions in 1 country.

Federico IsepponNeurobiology Sector, International School for Advanced Studies Trieste, Italy.
Luisa M R NapolitanoNeurobiology Sector, International School for Advanced Studies Trieste, Italy ; Structural Biology Laboratory, Elettra-Sincrotrone Trieste S.C.p.A. Trieste, Italy.
Vincent TorreNeurobiology Sector, International School for Advanced Studies Trieste, Italy.
Dan CojocInstitute of Materials - National Research Council Trieste, Italy.
Scuola Internazionale Superiore di Studi Avanzati · ITAREA Science Park · ITElettra-Sincrotrone Trieste S.C.p.A. · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Small RhoGTPases, such as Cdc42 and RhoA, are key players in integrating external cues and intracellular signaling pathways that regulate growth cone (GC) motility. Indeed, Cdc42 is involved in actin polymerization and filopodia formation, whereas RhoA induces GC collapse and neurite retraction through actomyosin contraction. In this study we employed Förster Resonance Energy Transfer (FRET) microscopy to study the spatio-temporal dynamics of Cdc42 and RhoA in GCs in response to local Semaphorin-3A (Sema3A) stimulation obtained with lipid vesicles filled with Sema3A and positioned near the selected GC using optical tweezers. We found that Cdc42 and RhoA were activated at the leading edge of NG108-15 neuroblastoma cells during spontaneous cycles of protrusion and retraction, respectively. The release of Sema3A brought to a progressive activation of RhoA within 30 s from the stimulus in the central region of the GC that collapsed and retracted. In contrast, the same stimulation evoked waves of Cdc42 activation propagating away from the stimulated region. A more localized stimulation obtained with Sema3A coated beads placed on the GC, led to Cdc42 active waves that propagated in a retrograde manner with a mean period of 70 s, and followed by GC retraction. Therefore, Sema3A activates both Cdc42 and RhoA with a complex and different spatial-temporal dynamics.

Indexed as

Cdc42FRETGC retractionlocal stimulationNG108-15 cell lineRhoASemaphorin-3A

Identifiers

PMID26379503
PMCPMC4549648
OpenAlexW1812527793

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Registered trials

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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.