Nests of dividing neuroblasts sustain interneuron production for the developing human brain

  • Mercedes F. Paredes
  • , Cristina Mora
  • , Quetzal Flores-Ramirez
  • , Arantxa Cebrian-Silla
  • , Ashley Del Dosso
  • , Phil Larimer
  • , Jiapei Chen
  • , Gugene Kang
  • , Susana Gonzalez Granero
  • , Eric Garcia
  • , Julia Chu
  • , Ryan Delgado
  • , Jennifer A. Cotter
  • , Vivian Tang
  • , Julien Spatazza
  • , Kirsten Obernier
  • , Jaime Ferrer Lozano
  • , Maximo Vento
  • , Julia Scott
  • , Colin Studholme
  • Tomasz J. Nowakowski, Arnold R. Kriegstein, Michael C. Oldham, Andrea Hasenstaub, Jose Manuel Garcia-Verdugo, Arturo Alvarez-Buylla, Eric J. Huang

Research output: Contribution to journalArticlepeer-review

37 Scopus citations

Abstract

The human cortex contains inhibitory interneurons derived from the medial ganglionic eminence (MGE), a germinal zone in the embryonic ventral forebrain. How this germinal zone generates sufficient interneurons for the human brain remains unclear. We found that the human MGE (hMGE) contains nests of proliferative neuroblasts with ultrastructural and transcriptomic features that distinguish them from other progenitors in the hMGE. When dissociated hMGE cells are transplanted into the neonatal mouse brain, they reform into nests containing proliferating neuroblasts that generate young neurons that migrate extensively into the mouse forebrain and mature into different subtypes of functional interneurons. Together, these results indicate that the nest organization and sustained proliferation of neuroblasts in the hMGE provide a mechanism for the extended production of interneurons for the human forebrain.

Original languageEnglish
Article numbereabk2346
JournalScience
Volume375
Issue number6579
DOIs
StatePublished - Jan 28 2022

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