Transcriptomics

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A single factor elicits multilineage reprogramming of astrocytes in the adult mouse striatum


ABSTRACT: Astrocytes in the adult brain show cellular plasticity; however, whether they have the potential to generate multiple lineages remains unclear. Here, we perform in vivo screens and identify DLX2 as a transcription factor that can unleash the multipotentiality of adult resident astrocytes. Genetic lineage tracing and time-course analyses reveal that DLX2 enables astrocytes to rapidly become ASCL1+ neural progenitor cells, which give rise to neurons, astrocytes, and oligodendrocytes in the adult mouse striatum. Single-cell transcriptomics and pseudotime trajectories further confirm a neural stem cell-like behavior of reprogrammed astrocytes, transitioning from quiescence to activation, proliferation, and neurogenesis. Gene regulatory networks and mouse genetics identify and confirm key nodes mediating DLX2-dependent fate reprogramming. These include activation of endogenous DLX family transcription factors and suppression of Notch signaling. Such reprogramming-induced multipotency of resident glial cells may be exploited for neural regeneration.

ORGANISM(S): Mus musculus

PROVIDER: GSE154213 | GEO | 2022/01/15

REPOSITORIES: GEO

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