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Activating transcription factors Atf3/4 drive early molecular events during neural stem cell differentiation and control neuron formation [RNA-seq]

ABSTRACT: The generation of new neurons from neural stem cells is tightly controlled by transcriptional programs. To induce cell fate switches that establish neuronal identities, differentiating neural precursor cells (NPCs) must undergo rapid and dynamic gene expression changes. However, the neuronal fate-determining molecular events that precede NPC differentiation are incompletely understood. Using high temporal resolution transcriptional profiling of adult hippocampal NPC differentiation, we here identified the activating transcription factors Atf3 and Atf4 as early switch regulators that drive NPC fate and control neuron formation. We found that Atf3/4 are rapidly upregulated in NPCs upon induction of differentiation and drive dynamic gene expression changes associated with neurogenesis. Pharmacological and genetic perturbation of Atf4 demonstrated its importance for neuron formation. Sustained overexpression of Atf3 hampered neurogenesis by repressing long non-coding RNA Miat. Our results demonstrate the critical role of an Atf3/Atf4-controlled transcriptional network in driving early molecular events during neurogenesis.

ORGANISM(S): Mus musculus

PROVIDER: GSE253374 | GEO | 2024/01/18

REPOSITORIES: GEO

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Activating transcription factors Atf3/Atf4 drive early molecular events preceding neural stem cell differentiation and control neuron formation [Short]

Project description:The generation of new neurons from neural stem cells is tightly controlled by transcriptional programs. To induce cell fate switches that establish neuronal identities, differentiating neural precursor cells (NPCs) must undergo rapid and dynamic gene expression changes. However, the neuronal fate-determining molecular events that precede NPC differentiation are incompletely understood. Using high temporal resolution transcriptional profiling of adult hippocampal NPC differentiation, we here identified the activating transcription factors Atf3 and Atf4 as early switch regulators that drive NPC fate and control neuron formation. We found that Atf3/4 are rapidly upregulated in NPCs upon induction of differentiation and drive dynamic gene expression changes associated with neurogenesis. Pharmacological and genetic perturbation of Atf4 demonstrated its importance for neuron formation. Sustained overexpression of Atf3 hampered neurogenesis by repressing long non-coding RNA Miat. Our results demonstrate the critical role of an Atf3/Atf4-controlled transcriptional network in driving early molecular events during neurogenesis.

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Activating transcription factors Atf3/Atf4 drive early molecular events preceding neural stem cell differentiation and control neuron formation [Long]

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BET Bromodomain inhibition promotes neurogenesis while inhibiting gliogenesis in neural progenitor cells

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JMJD3 and UTX Determine Fidelity and Lineage Specification of Human Neural Progenitor Cells [UTX ChIP]

Project description:Neurogenesis entails a highly orchestrated process from pluripotent to neural cell fates including progenitors (NPCs) and various neural subtypes. However, the precise epigenetic mechanisms underlying the fate decision remain poorly understood. Here, we deleted KDM6s (JMJD3 or/and UTX), the demethylases for H3K27me3, in human embryonic stem cells (hESCs) and show that their deletion does not impede NPC generation from hESCs. However, KDM6-deficient NPCs exhibit poor proliferation and fail to become neurons and glia. Mechanistically, KDM6 deficiency leads to H3K27me3 accumulation and blockade of DNA accessibility at loci essential for neurogenesis, thus hinder the fate transition from NPCs to neural subtypes. Our findings uncover an essential role of KDM6s in neurogenesis and highlight the contribution of individual epigenetic regulators in specifying lineage fidelity and fate decision during human development.

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JMJD3 and UTX Determine Fidelity and Lineage Specification of Human Neural Progenitor Cells [ATAC-seq]

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