Cell stress in cortical organoids impairs molecular subtype specification

Aparna Bhaduri, Madeline G. Andrews, Walter Mancia Leon, Diane Jung, David Shin, Denise Allen, Dana Jung, Galina Schmunk, Maximilian Haeussler, Jahan Salma, Alex A. Pollen, Tomasz J. Nowakowski and Arnold R. Kriegstein ()
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Aparna Bhaduri: University of California, San Francisco (UCSF)
Madeline G. Andrews: University of California, San Francisco (UCSF)
Walter Mancia Leon: University of California, San Francisco (UCSF)
Diane Jung: University of California, San Francisco (UCSF)
David Shin: University of California, San Francisco (UCSF)
Denise Allen: University of California, San Francisco (UCSF)
Dana Jung: University of California, San Francisco (UCSF)
Galina Schmunk: University of California, San Francisco (UCSF)
Maximilian Haeussler: University of California, Santa Cruz
Jahan Salma: The Aga Khan University
Alex A. Pollen: University of California, San Francisco (UCSF)
Tomasz J. Nowakowski: University of California, San Francisco (UCSF)
Arnold R. Kriegstein: University of California, San Francisco (UCSF)

Nature, 2020, vol. 578, issue 7793, 142-148

Abstract: Abstract Cortical organoids are self-organizing three-dimensional cultures that model features of the developing human cerebral cortex1,2. However, the fidelity of organoid models remains unclear3–5. Here we analyse the transcriptomes of individual primary human cortical cells from different developmental periods and cortical areas. We find that cortical development is characterized by progenitor maturation trajectories, the emergence of diverse cell subtypes and areal specification of newborn neurons. By contrast, organoids contain broad cell classes, but do not recapitulate distinct cellular subtype identities and appropriate progenitor maturation. Although the molecular signatures of cortical areas emerge in organoid neurons, they are not spatially segregated. Organoids also ectopically activate cellular stress pathways, which impairs cell-type specification. However, organoid stress and subtype defects are alleviated by transplantation into the mouse cortex. Together, these datasets and analytical tools provide a framework for evaluating and improving the accuracy of cortical organoids as models of human brain development.

Date: 2020
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DOI: 10.1038/s41586-020-1962-0

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