Next generation human brain models: engineered flat brain organoids featuring gyrification: Note

Theresa S.P. Rothenbücher*, Hakan Gürbüz, Marta P. Pereira*, Arto Heiskanen, Jenny Emnéus, Alberto Martinez-Serrano

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Brain organoids are considered to be a highly promising in vitro model for the study of the human brain and, despite their various shortcomings, have already been used widely in neurobiological studies. Especially for drug screening applications, a highly reproducible protocol with simple tissue culture steps and consistent output, is required. Here we present an engineering approach that addresses several existing shortcomings of brain organoids. By culturing brain organoids with a polycaprolactone scaffold, we were able to modify their shape into a flat morphology. Engineered flat brain organoids (efBOs) possess advantageous diffusion conditions and thus their tissue is better supplied with oxygen and nutrients, preventing the formation of a necrotic tissue core. Moreover, the efBO protocol is highly simplified and allows to customize the organoid size directly from the start. By seeding cells onto 12 by 12 mm scaffolds, the brain organoid size can be significantly increased. In addition, we were able to observe folding reminiscent of gyrification around day 20, which was self-generated by the tissue. To our knowledge, this is the first study that reports intrinsically caused gyrification of neuronal tissue in vitro. We consider our efBO protocol as a next step towards the generation of a stable and reliable human brain model for drug screening applications and spatial patterning experiments.
Original languageEnglish
Article number011001
JournalBiofabrication
Volume13
Issue number1
Number of pages1
ISSN1758-5082
DOIs
Publication statusPublished - 2021

Keywords

  • Tissue engineering
  • Neurobiology
  • 3D-printing
  • Brain organoids
  • Biomaterials

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