ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2021
Pioneer Axons Utilize a
Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
What it found
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Who cites it
7 citing papers in PubMed, 15 citations in OpenAlex.
- The regenerative period of somatosensory nerves is closed by a DCC signaling axis.PLoS genetics · 2026Article
- An ultrastructural map of a spinal sensorimotor circuit reveals the potential of astroglia modulation.Cell reports · 2026Article
- Article
- Multiple Guidance Mechanisms Control Axon Growth to Generate Precise T-shaped Bifurcation during Dorsal Funiculus Development in the Spinal Cord.bioRxiv : the preprint server for biology · 2024Article
- Piezo1-mediated spontaneous calcium transients in satellite glia impact dorsal root ganglia development.PLoS biology · 2023Article
- The embryonic zebrafish brain is seeded by a lymphatic-dependent population of mrc1Nature neuroscience · 2022Article
- A Subset of Oligodendrocyte Lineage Cells Interact With the Developing Dorsal Root Entry Zone During Its Genesis.Frontiers in cellular neuroscience · 2022Article
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Authors and funding
8 authors at 3 institutions in 2 countries.
Funding
Abstract
Axons navigate through the embryo to construct a functional nervous system. A missing part of the axon navigation puzzle is how a single axon traverses distinct anatomic choice points through its navigation. The dorsal root ganglia (DRG) neurons experience such choice points. First, they navigate to the dorsal root entry zone (DREZ), then halt navigation in the peripheral nervous system to invade the spinal cord, and then reinitiate navigation inside the CNS. Here, we used time-lapse super-resolution imaging in zebrafish DRG pioneer neurons to investigate how embryonic axons control their cytoskeleton to navigate to and invade at the correct anatomic position. We found that invadopodia components form in the growth cone even during filopodia-based navigation, but only stabilize when the axon is at the spinal cord entry location. Further, we show that intermediate levels of DCC and cAMP, as well as Rac1 activation, subsequently engage an axon invasion brake. Our results indicate that actin-based invadopodia components form in the growth cone and disruption of the invasion brake causes axon entry defects and results in failed behavioral responses, thereby demonstrating the importance of regulating distinct actin populations during navigational challenges.
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Registered trials
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.