eLife (Jul 2021)

Single-cell analysis of the ventricular-subventricular zone reveals signatures of dorsal and ventral adult neurogenesis

  • Arantxa Cebrian-Silla,
  • Marcos Assis Nascimento,
  • Stephanie A Redmond,
  • Benjamin Mansky,
  • David Wu,
  • Kirsten Obernier,
  • Ricardo Romero Rodriguez,
  • Susana Gonzalez-Granero,
  • Jose Manuel García-Verdugo,
  • Daniel A Lim,
  • Arturo Álvarez-Buylla

DOI
https://doi.org/10.7554/eLife.67436
Journal volume & issue
Vol. 10

Abstract

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The ventricular-subventricular zone (V-SVZ), on the walls of the lateral ventricles, harbors the largest neurogenic niche in the adult mouse brain. Previous work has shown that neural stem/progenitor cells (NSPCs) in different locations within the V-SVZ produce different subtypes of new neurons for the olfactory bulb. The molecular signatures that underlie this regional heterogeneity remain largely unknown. Here, we present a single-cell RNA-sequencing dataset of the adult mouse V-SVZ revealing two populations of NSPCs that reside in largely non-overlapping domains in either the dorsal or ventral V-SVZ. These regional differences in gene expression were further validated using a single-nucleus RNA-sequencing reference dataset of regionally microdissected domains of the V-SVZ and by immunocytochemistry and RNAscope localization. We also identify two subpopulations of young neurons that have gene expression profiles consistent with a dorsal or ventral origin. Interestingly, a subset of genes are dynamically expressed, but maintained, in the ventral or dorsal lineages. The study provides novel markers and territories to understand the region-specific regulation of adult neurogenesis.

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