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Genes Dev. 2007 Apr 1;21(7):744-9.

The microRNA miR-124 antagonizes the anti-neural REST/SCP1 pathway during embryonic CNS development.

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  • 1Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas 77030, USA.

Abstract

Neuronal gene expression is tightly regulated in developing CNS. Here, we demonstrate the anti-neural function of phosphatase SCP1 (small C-terminal domain phosphatase 1) during development. We further show that the neuron-enriched microRNA miR-124 directly targets SCP1-3' untranslated region (UTR) to suppress SCP1 expression. In developing spinal cord, expression of miR-124 and SCP1 is complementary, and miR-124 antagonism phenocopies SCP1 overexpression and vice versa. In P19 cells, miR-124 suppresses SCP1 expression and induces neurogenesis, and SCP1 counteracts this proneural activity of miR-124. Our results suggest that, during CNS development, timely down-regulation of SCP1 is critical for inducing neurogenesis, and miR-124 contributes to this process at least in part by down-regulating SCP1 expression.

PMID:
17403776
[PubMed - indexed for MEDLINE]
PMCID:
PMC1838526
Free PMC Article
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