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Title

Transcriptional Dysregulation in Postnatal Glutamatergic Progenitors Contributes to Closure of the Cortical Neurogenic Period

Authors
Donega, Vanessa
Marcy, Guillaume
Zweifel, Stefan
Angonin, Diane
Fiorelli, Roberto
Abrous, Djoher Nora
Rival-Gervier, Sylvie
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Published in Cell Reports. 2018, vol. 22, no. 10, p. 2567-2574
Abstract Progenitors of cortical glutamatergic neurons (Glu progenitors) are usually thought to switch fate before birth to produce astrocytes. We used fate-mapping approaches to show that a large fraction of Glu progenitors persist in the postnatal forebrain after closure of the cortical neurogenesis period. Postnatal Glu progenitors do not accumulate during embryonal development but are produced by embryonal radial glial cells that persist after birth in the dorsal subventricular zone and continue to give rise to cortical neurons, although with low efficiency. Single-cell RNA sequencing reveals a dysregulation of transcriptional programs, which parallels changes in m6A methylation and correlates with the gradual decline in cortical neurogenesis observed in vivo. Rescuing experiments show that postnatal progenitors are partially permissive to genetic and pharmacological manipulations. Our study provides an in-depth characterization of postnatal Glu progenitors and identifies potential therapeutic targets for promoting brain repair.
Identifiers
PMID: 29514086
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Article (Published version) (3.5 MB) - public document Free access
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Research group Neurobiologie développementale et plasticité (880)
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DONEGA, Vanessa et al. Transcriptional Dysregulation in Postnatal Glutamatergic Progenitors Contributes to Closure of the Cortical Neurogenic Period. In: Cell Reports, 2018, vol. 22, n° 10, p. 2567-2574. https://archive-ouverte.unige.ch/unige:114256

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Deposited on : 2019-02-13

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