Transcriptome sequencing during mouse brain development identifies long non-coding RNAs functionally involved in neurogenic commitment

Autor: Martina Dori, Mathias Lesche, Simone Massalini, Andreas Dahl, Dimitra Alexopoulou, Elke Wessendorf, Tanay Ghosh, Federico Calegari, Silvia Prenninger, Michael Hiller, Laura Sebastian Monasor, Julieta Aprea, Matthias Groszer, Sara Zocher
Rok vydání: 2013
Předmět:
Zdroj: The EMBO Journal. 32:3145-3160
ISSN: 0261-4189
DOI: 10.1038/emboj.2013.245
Popis: Transcriptome analysis of somatic stem cells and their progeny is fundamental to identify new factors controlling proliferation versus differentiation during tissue formation. Here, we generated a combinatorial, fluorescent reporter mouse line to isolate proliferating neural stem cells, differentiating progenitors and newborn neurons that coexist as intermingled cell populations during brain development. Transcriptome sequencing revealed numerous novel long non-coding (lnc)RNAs and uncharacterized protein-coding transcripts identifying the signature of neurogenic commitment. Importantly, most lncRNAs overlapped neurogenic genes and shared with them a nearly identical expression pattern suggesting that lncRNAs control corticogenesis by tuning the expression of nearby cell fate determinants. We assessed the power of our approach by manipulating lncRNAs and protein-coding transcripts with no function in corticogenesis reported to date. This led to several evident phenotypes in neurogenic commitment and neuronal survival, indicating that our study provides a remarkably high number of uncharacterized transcripts with hitherto unsuspected roles in brain development. Finally, we focussed on one lncRNA, Miat, whose manipulation was found to trigger pleiotropic effects on brain development and aberrant splicing of Wnt7b. Hence, our study suggests that lncRNA-mediated alternative splicing of cell fate determinants controls stem-cell commitment during neurogenesis.
Databáze: OpenAIRE
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