Evidence map›Paper›PMID 24849351›Full record

ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2014

Steering neuronal growth cones by shifting the imbalance between exocytosis and endocytosis.

Takuro Tojima, Rurika Itofusa, Hiroyuki Kamiguchi

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
2.5field-weighted citation impact, top 12% 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

24 citing papers in PubMed, 47 citations in OpenAlex.

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  15. Revisiting Netrin-1: One Who Guides (Axons).Frontiers in cellular neuroscience · 2018
    Review
  16. Article
  17. Review
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  19. Review
  20. Cyclic Nucleotide Control of Microtubule Dynamics for Axon Guidance.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2016
    Article
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

3 authors at 1 institution in 1 country.

Takuro TojimaLaboratory for Neuronal Growth Mechanisms, RIKEN Brain Science Institute, Wako, Saitama 351-0198, Japan, and PRESTO, Japan Science and Technology Agency, Kawaguchi, Saitama 332-0012, Japan.
Rurika ItofusaLaboratory for Neuronal Growth Mechanisms, RIKEN Brain Science Institute, Wako, Saitama 351-0198, Japan, and.
Hiroyuki KamiguchiLaboratory for Neuronal Growth Mechanisms, RIKEN Brain Science Institute, Wako, Saitama 351-0198, Japan, and kamiguchi@brain.riken.jp.
RIKEN Center for Brain Science · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Extracellular molecular cues guide migrating growth cones along specific routes during development of axon tracts. Such processes rely on asymmetric elevation of cytosolic Ca(2+) concentrations across the growth cone that mediates its attractive or repulsive turning toward or away from the side with Ca(2+) elevation, respectively. Downstream of these Ca(2+) signals, localized activation of membrane trafficking steers the growth cone bidirectionally, with endocytosis driving repulsion and exocytosis causing attraction. However, it remains unclear how Ca(2+) can differentially regulate these opposite membrane-trafficking events. Here, we show that growth cone turning depends on localized imbalance between exocytosis and endocytosis and identify Ca(2+)-dependent signaling pathways mediating such imbalance. In embryonic chicken dorsal root ganglion neurons, repulsive Ca(2+) signals promote clathrin-mediated endocytosis through a 90 kDa splice variant of phosphatidylinositol-4-phosphate 5-kinase type-1γ (PIPKIγ90). In contrast, attractive Ca(2+) signals facilitate exocytosis but suppress endocytosis via Ca(2+)/calmodulin-dependent protein kinase II (CaMKII) and cyclin-dependent kinase 5 (Cdk5) that can inactivate PIPKIγ90. Blocking CaMKII or Cdk5 leads to balanced activation of both exocytosis and endocytosis that causes straight growth cone migration even in the presence of guidance signals, whereas experimentally perturbing the balance restores the growth cone's turning response. Remarkably, the direction of this resumed turning depends on relative activities of exocytosis and endocytosis, but not on the type of guidance signals. Our results suggest that navigating growth cones can be redirected by shifting the imbalance between exocytosis and endocytosis, highlighting the importance of membrane-trafficking imbalance for axon guidance and, possibly, for polarized cell migration in general.

Indexed as

AnimalsCalcium SignalingCells, CulturedChick EmbryoClathrinEgtazic AcidEndocytosisEnzyme InhibitorsExocytosisGanglia, SpinalGrowth ConesMyelin-Associated GlycoproteinNeuronsOrganophosphonatesPhosphotransferases (Alcohol Group Acceptor)Photolysis2-nitrophenyl-EGTAcarboxypiperazinyl propylphosphonic acidClathrinEgtazic AcidEnzyme InhibitorsMyelin-Associated GlycoproteinOrganophosphonatesPhosphotransferases (Alcohol Group Acceptor)PiperazinesVesicle-Associated Membrane Protein 2axon guidanceCa2+endocytosisexocytosisgrowth cone

Identifiers

PMID24849351
PMCPMC6608195
OpenAlexW1991244803

What OpenQuestion holds

Textmetadata
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.