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Long-term maturation of human cortical organoids matches key early postnatal transitions
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Long-term maturation of human cortical organoids matches key early postnatal transitions
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Journal Article
Long-term maturation of human cortical organoids matches key early postnatal transitions
2021
Overview
Human stem-cell-derived models provide the promise of accelerating our understanding of brain disorders, but not knowing whether they possess the ability to mature beyond mid- to late-fetal stages potentially limits their utility. We leveraged a directed differentiation protocol to comprehensively assess maturation in vitro. Based on genome-wide analysis of the epigenetic clock and transcriptomics, as well as RNA editing, we observe that three-dimensional human cortical organoids reach postnatal stages between 250 and 300 days, a timeline paralleling in vivo development. We demonstrate the presence of several known developmental milestones, including switches in the histone deacetylase complex and NMDA receptor subunits, which we confirm at the protein and physiological levels. These results suggest that important components of an intrinsic in vivo developmental program persist in vitro. We further map neurodevelopmental and neurodegenerative disease risk genes onto in vitro gene expression trajectories to provide a resource and webtool (Gene Expression in Cortical Organoids, GECO) to guide disease modeling.
Gordon et al. use genome-wide unbiased approaches to show that human cerebral cortical organoids, when cultured for many months, start to resemble stages of postnatal brain development, with a timeline that parallels in vivo development.
Publisher
Nature Publishing Group US,Nature Publishing Group
Subject
/ 13/106
/ 38/39
/ Animal Genetics and Genomics
/ Biomedical and Life Sciences
/ Brain
/ Cell Differentiation - physiology
/ DNA Methylation - physiology
/ Fetuses
/ Genomes
/ Glutamic acid receptors (ionotropic)
/ Humans
/ Induced Pluripotent Stem Cells - cytology
/ Infants
/ N-Methyl-D-aspartic acid receptors
/ Neurodegenerative Diseases - genetics
/ Neurodevelopmental disorders
/ Switches
