Cell Reports (Apr 2024)

Generation of human cerebral organoids with a structured outer subventricular zone

  • Ryan M. Walsh,
  • Raffaele Luongo,
  • Elisa Giacomelli,
  • Gabriele Ciceri,
  • Chelsea Rittenhouse,
  • Antonietta Verrillo,
  • Maura Galimberti,
  • Vittoria Dickinson Bocchi,
  • Youjun Wu,
  • Nan Xu,
  • Simone Mosole,
  • James Muller,
  • Elena Vezzoli,
  • Johannes Jungverdorben,
  • Ting Zhou,
  • Roger A. Barker,
  • Elena Cattaneo,
  • Lorenz Studer,
  • Arianna Baggiolini

Journal volume & issue
Vol. 43, no. 4
p. 114031

Abstract

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Summary: Outer radial glia (oRG) emerge as cortical progenitor cells that support the development of an enlarged outer subventricular zone (oSVZ) and the expansion of the neocortex. The in vitro generation of oRG is essential to investigate the underlying mechanisms of human neocortical development and expansion. By activating the STAT3 signaling pathway using leukemia inhibitory factor (LIF), which is not expressed in guided cortical organoids, we define a cortical organoid differentiation method from human pluripotent stem cells (hPSCs) that recapitulates the expansion of a progenitor pool into the oSVZ. The oSVZ comprises progenitor cells expressing specific oRG markers such as GFAP, LIFR, and HOPX, closely matching human fetal oRG. Finally, incorporating neural crest-derived LIF-producing cortical pericytes into cortical organoids recapitulates the effects of LIF treatment. These data indicate that increasing the cellular complexity of the organoid microenvironment promotes the emergence of oRG and supports a platform to study oRG in hPSC-derived brain organoids routinely.

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