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Input-dependent Regulation of Excitability Controls Dendritic Maturation in Somatosensory Thalamocortical Neurons

Overview
Journal Nat Commun
Specialty Biology
Date 2017 Dec 10
PMID 29222517
Citations 16
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Abstract

Input from the sensory organs is required to pattern neurons into topographical maps during development. Dendritic complexity critically determines this patterning process; yet, how signals from the periphery act to control dendritic maturation is unclear. Here, using genetic and surgical manipulations of sensory input in mouse somatosensory thalamocortical neurons, we show that membrane excitability is a critical component of dendritic development. Using a combination of genetic approaches, we find that ablation of N-methyl-D-aspartate (NMDA) receptors during postnatal development leads to epigenetic repression of Kv1.1-type potassium channels, increased excitability, and impaired dendritic maturation. Lesions to whisker input pathways had similar effects. Overexpression of Kv1.1 was sufficient to enable dendritic maturation in the absence of sensory input. Thus, Kv1.1 acts to tune neuronal excitability and maintain it within a physiological range, allowing dendritic maturation to proceed. Together, these results reveal an input-dependent control over neuronal excitability and dendritic complexity in the development and plasticity of sensory pathways.

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References
1.
Guan D, Lee J, Tkatch T, Surmeier D, Armstrong W, Foehring R . Expression and biophysical properties of Kv1 channels in supragranular neocortical pyramidal neurones. J Physiol. 2005; 571(Pt 2):371-89. PMC: 1796796. DOI: 10.1113/jphysiol.2005.097006. View

2.
Ewald R, Van Keuren-Jensen K, Aizenman C, Cline H . Roles of NR2A and NR2B in the development of dendritic arbor morphology in vivo. J Neurosci. 2008; 28(4):850-61. PMC: 6671013. DOI: 10.1523/JNEUROSCI.5078-07.2008. View

3.
Lee L, Erzurumlu R . Altered parcellation of neocortical somatosensory maps in N-methyl-D-aspartate receptor-deficient mice. J Comp Neurol. 2005; 485(1):57-63. PMC: 3556571. DOI: 10.1002/cne.20514. View

4.
Flor H, Nikolajsen L, Jensen T . Phantom limb pain: a case of maladaptive CNS plasticity?. Nat Rev Neurosci. 2006; 7(11):873-81. DOI: 10.1038/nrn1991. View

5.
Whitford K, Dijkhuizen P, Polleux F, Ghosh A . Molecular control of cortical dendrite development. Annu Rev Neurosci. 2002; 25:127-49. DOI: 10.1146/annurev.neuro.25.112701.142932. View