Cited by 266Ion channel regulation and functionNerve injury and regenerationIon Channels and Receptors

Neurotrophin-evoked depolarization requires the sodium channel NaV1.9

Blum, Robert, Kafitz, Karl W., Konnerth, Arthur·2002·Nature

Abstract

Brain-derived neurotrophic factor (BDNF) and other neurotrophins are essential for normal brain function. Many types of neurons in the central nervous system are excited by BDNF or neurotrophin-4/5, an action that has recently been implicated in synaptic plasticity. The mechanisms involved in this transmitter-like action of neurotrophins remains unclear. Here, by screening candidate genes with an antisense messenger RNA expression approach and by co-expressing the receptor tyrosine kinase TrkB and various sodium channels, we demonstrate that the tetrodotoxin-insensitive sodium channel Na(V)1.9 underlies the neurotrophin-evoked excitation. These results establish the molecular basis of neurotrophin-evoked depolarization and reveal a mechanism of ligand-mediated sodium channel activation.

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Crossref · 10.1038/nature01085

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  • Bath application of a low concentration (20 ng/ml) of BDNF did not by itself induce spine-head enlargement (n=30).

    “Bath application of a low concentration (20 ng/ ml) of BDNF did not by itself induce spine-head enlargement (n = 30) (Fig. 4A) or inward currents (0.5 ± 1.2 pA, n = 5) (Fig. 4B) (19, 20).”
  • Bath application of 20 ng/ml BDNF did not by itself induce inward currents (0.5 ± 1.2 pA, n=5).

    “Bath application of a low concentration (20 ng/ ml) of BDNF did not by itself induce spine-head enlargement (n = 30) (Fig. 4A) or inward currents (0.5 ± 1.2 pA, n = 5) (Fig. 4B) (19, 20).”

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Authors
Blum, R., Kafitz, K. W., & Konnerth, A.
Affiliations
Physiologisches Institut (DE)
Corresponding author
Konnerth, Arthur
Venue
Nature
Published
2002-10
Volume
419
Issue
6908
Pages
687-693
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2070568755
Cited by
266
References
45
Citations by year
2026: 1 · 2025: 4 · 2024: 7 · 2023: 5 · 2022: 5 · 2021: 6 · 2020: 6 · 2019: 3 · 2018: 9 · 2017: 6 · 2016: 10 · 2015: 9 · 2014: 11 · 2013: 10 · 2012: 15
FWCI
10.08
Type
journal article
Language
en
Open access
closed
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ion channel regulation and function
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Nerve injury and regeneration
  • Life Sciences › Neuroscience › Sensory Systems › Ion Channels and Receptors
Keywords
neurotrophins, brain-derived neurotrophic factor, neurotrophin-4/5, TrkB receptor, synaptic plasticity, neuronal excitation
MeSH terms
Animals, Cell Line, Cells, Cultured, Cloning, Molecular, Electric Conductivity, Hippocampus, Humans, Molecular Sequence Data, Nerve Growth Factors, Neuroblastoma, Neurons, Neuropeptides, RNA, Messenger, Saxitoxin, Sodium, Sodium Channels, RNA, Antisense, Rats, Wistar, Brain-Derived Neurotrophic Factor, Receptor, trkB, Rats, NAV1.9 Voltage-Gated Sodium Channel

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