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Single-cell and spatial transcriptomics reveal somitogenesis in gastruloids
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Single-cell and spatial transcriptomics reveal somitogenesis in gastruloids
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Journal Article
Single-cell and spatial transcriptomics reveal somitogenesis in gastruloids
2020
Overview
Gastruloids are three-dimensional aggregates of embryonic stem cells that display key features of mammalian development after implantation, including germ-layer specification and axial organization
1
–
3
. To date, the expression pattern of only a small number of genes in gastruloids has been explored with microscopy, and the extent to which genome-wide expression patterns in gastruloids mimic those in embryos is unclear. Here we compare mouse gastruloids with mouse embryos using single-cell RNA sequencing and spatial transcriptomics. We identify various embryonic cell types that were not previously known to be present in gastruloids, and show that key regulators of somitogenesis are expressed similarly between embryos and gastruloids. Using live imaging, we show that the somitogenesis clock is active in gastruloids and has dynamics that resemble those in vivo. Because gastruloids can be grown in large quantities, we performed a small screen that revealed how reduced FGF signalling induces a short-tail phenotype in embryos. Finally, we demonstrate that embedding in Matrigel induces gastruloids to generate somites with the correct rostral–caudal patterning, which appear sequentially in an anterior-to-posterior direction over time. This study thus shows the power of gastruloids as a model system for exploring development and somitogenesis in vitro in a high-throughput manner.
Single-cell RNA sequencing and spatial transcriptomics reveal that the somitogenesis clock is active in mouse gastruloids, which can be induced to generate somites with the correct rostral–caudal patterning.
Publisher
Nature Publishing Group UK,Nature Publishing Group
Subject
/ 13/106
/ 13/107
/ 13/31
/ 14
/ 14/19
/ 14/32
/ 14/69
/ 38
/ 38/39
/ 38/91
/ 64/60
/ Analysis
/ Animals
/ Collagen
/ Datasets
/ Embryo, Mammalian - cytology
/ Embryo, Mammalian - embryology
/ Embryo, Mammalian - metabolism
/ Embryos
/ Female
/ Gene Expression Regulation, Developmental
/ Genes
/ Genomes
/ Humanities and Social Sciences
/ Laminin
/ Male
/ Methods
/ Mice
/ Mouse Embryonic Stem Cells - cytology
/ Mouse Embryonic Stem Cells - metabolism
/ RNA-Seq
/ Science
/ Somite
/ Somites
