Inputs from Sequentially Developed Parallel Fibers Are Required for Cerebellar Organization

Title
Inputs from Sequentially Developed Parallel Fibers Are Required for Cerebellar Organization
Authors
게이코 야마모토김진현유키오 야마모토김태곤박희연
Issue Date
2019-09
Publisher
Cell Reports
Citation
VOL 28-2954
Abstract
Neuronal activity is believed to be important for brain development; however, it remains unclear as to how spatiotemporal distributions of synaptic excitation contribute to neural network formation. Bifurcated axons of cerebellar granule cells, parallel fibers (PFs), are made in an orderly inside-out manner during postnatal development. In this study, we induced a blockade of neurotransmitter release from specific bundles of developing PFs and tested the effects of biased PF inputs on cerebellar development. The blockade of different layers of PFs at different developmental times results in varying degrees of abnormal cerebellar development. Furthermore, cerebellar network abnormalities are not restored when PF inputs are restored in adulthood and, hence, result in motor dysfunction. We thus conclude that spatiotemporally unbiased synaptic transmission from sequentially developed PFs is crucial for cerebellar network formation and motor function, supporting the idea that unbiased excitatory synaptic transmission is crucial for network formation.
URI
http://pubs.kist.re.kr/handle/201004/69949
ISSN
2211-1247
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KIST Publication > Article
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