1. MicroRNA profiling of mouse cortical progenitors and neurons reveals miR-486-5p as a regulator of neurogenesis.
- Author
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Dori M, Cavalli D, Lesche M, Massalini S, Alieh LHA, de Toledo BC, Khudayberdiev S, Schratt G, Dahl A, and Calegari F
- Subjects
- Animals, Blotting, Northern, Computational Biology methods, Electroporation, Female, Gene Expression Profiling methods, High-Throughput Nucleotide Sequencing methods, Immunohistochemistry, In Situ Hybridization, Mice, Mice, Inbred C57BL, MicroRNAs genetics, Neurogenesis genetics, Neurogenesis physiology, MicroRNAs metabolism, Neural Stem Cells cytology, Neural Stem Cells metabolism, Neurons cytology, Neurons metabolism
- Abstract
MicroRNAs (miRNAs) are short (∼22 nt) single-stranded non-coding RNAs that regulate gene expression at the post-transcriptional level. Over recent years, many studies have extensively characterized the involvement of miRNA-mediated regulation in neurogenesis and brain development. However, a comprehensive catalog of cortical miRNAs expressed in a cell-specific manner in progenitor types of the developing mammalian cortex is still missing. Overcoming this limitation, here we exploited a double reporter mouse line previously validated by our group to allow the identification of the transcriptional signature of neurogenic commitment and provide the field with the complete atlas of miRNA expression in proliferating neural stem cells, neurogenic progenitors and newborn neurons during corticogenesis. By extending the currently known list of miRNAs expressed in the mouse brain by over twofold, our study highlights the power of cell type-specific analyses for the detection of transcripts that would otherwise be diluted out when studying bulk tissues. We further exploited our data by predicting putative miRNAs and validated the power of our approach by providing evidence for the involvement of miR-486 in brain development., Competing Interests: Competing interestsThe authors declare no competing or financial interests., (© 2020. Published by The Company of Biologists Ltd.)
- Published
- 2020
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