In the Right Place at the Right Time: miRNAs as Key Regulators in Developing Axons.

In the Right Place at the Right Time: miRNAs as Key Regulators in Developing Axons.
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DOI:
10.3390/ijms21228726
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发表时间:
2020-11-18
影响因子:
5.6
通讯作者:
Baudet ML
Baudet ML
中科院分区:
生物学2区
文献类型:
--
作者:
Corradi E;Baudet ML

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During neuronal circuit formation, axons progressively develop into a presynaptic compartment aided by extracellular signals. Axons display a remarkably high degree of autonomy supported in part by a local translation machinery that permits the subcellular production of proteins required for their development. Here, we review the latest findings showing that microRNAs (miRNAs) are critical regulators of this machinery, orchestrating the spatiotemporal regulation of local translation in response to cues. We first survey the current efforts toward unraveling the axonal miRNA repertoire through miRNA profiling, and we reveal the presence of a putative axonal miRNA signature. We also provide an overview of the molecular underpinnings of miRNA action. Our review of the available experimental evidence delineates two broad paradigms: cue-induced relief of miRNA-mediated inhibition, leading to bursts of protein translation, and cue-induced miRNA activation, which results in reduced protein production. Overall, this review highlights how a decade of intense investigation has led to a new appreciation of miRNAs as key elements of the local translation regulatory network controlling axon development.
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