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Uncoupling of EphA/ephrinA Signaling and Spontaneous Activity in Neural Circuit Wiring

Overview
Journal J Neurosci
Specialty Neurology
Date 2013 Nov 15
PMID 24227729
Citations 18
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Abstract

Classic studies have proposed that genetically encoded programs and spontaneous activity play complementary but independent roles in the development of neural circuits. Recent evidence, however, suggests that these two mechanisms could interact extensively, with spontaneous activity affecting the expression and function of guidance molecules at early developmental stages. Here, using the developing chick spinal cord and the mouse visual system to ectopically express the inwardly rectifying potassium channel Kir2.1 in individual embryonic neurons, we demonstrate that cell-intrinsic blockade of spontaneous activity in vivo does not affect neuronal identity specification, axon pathfinding, or EphA/ephrinA signaling during the development of topographic maps. However, intrinsic spontaneous activity is critical for axon branching and pruning once axonal growth cones reach their correct topographic position in the target tissues. Our experiments argue for the dissociation of spontaneous activity from hard-wired developmental programs in early phases of neural circuit formation.

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References
1.
Spitzer N . Electrical activity in early neuronal development. Nature. 2006; 444(7120):707-12. DOI: 10.1038/nature05300. View

2.
Kastanenka K, Landmesser L . In vivo activation of channelrhodopsin-2 reveals that normal patterns of spontaneous activity are required for motoneuron guidance and maintenance of guidance molecules. J Neurosci. 2010; 30(31):10575-85. PMC: 2934783. DOI: 10.1523/JNEUROSCI.2773-10.2010. View

3.
Goodman C, Shatz C . Developmental mechanisms that generate precise patterns of neuronal connectivity. Cell. 1993; 72 Suppl:77-98. DOI: 10.1016/s0092-8674(05)80030-3. View

4.
Xu H, Furman M, Mineur Y, Chen H, King S, Zenisek D . An instructive role for patterned spontaneous retinal activity in mouse visual map development. Neuron. 2011; 70(6):1115-27. PMC: 3119851. DOI: 10.1016/j.neuron.2011.04.028. View

5.
Gartz Hanson M, Landmesser L . Normal patterns of spontaneous activity are required for correct motor axon guidance and the expression of specific guidance molecules. Neuron. 2004; 43(5):687-701. DOI: 10.1016/j.neuron.2004.08.018. View