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Multilineage communication regulates human liver bud self-organization from pluripotency II

ABSTRACT: Conventional 2-D differentiation from pluripotency fails to recapitulate cell interactions occurring during organogenesis. 3-D organoids generate complex organ-like tissues, however it is unclear how heterotypic interactions impact lineage identity. Here we use single-cell RNA-seq to reconstruct hepatocyte-like lineage progression from pluripotency in 2-D culture. We then derive 3-D liver bud (LB) organoids by reconstituting hepatic, stromal, and endothelial interactions, and deconstruct heterogeneity during LB development. We find that LB hepatoblasts diverge from the 2-D lineage, and express epithelial migration signatures characteristic of organ budding. We benchmark 3-D LBs against fetal and adult human liver scRNA-seq data, and find a striking correspondence between the 3-D LB and fetal liver cells. We use a receptor-ligand pairing analysis and a high-throughput inhibitor assay to interrogate signaling in LBs, and show that VEGF crosstalk potentiates endothelial network formation and hepatoblast differentiation. Our molecular dissection reveals interlineage communication regulating organoid development, and illuminates previously inaccessible aspects of human liver development.

OTHER RELATED OMICS DATASETS IN: PRJNA322308PRJNA380268

ORGANISM(S): Mus musculus Homo sapiens

PROVIDER: GSE96981 | GEO | 2017/06/21

SECONDARY ACCESSION(S): PRJNA380268

REPOSITORIES: GEO

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Multilineage communication regulates human liver bud self-organization from pluripotency I

Project description:Conventional 2-D differentiation from pluripotency fails to recapitulate cell interactions occurring during organogenesis. 3-D organoids generate complex organ-like tissues, however it is unclear how heterotypic interactions impact lineage identity. Here we use single-cell RNA-seq to reconstruct hepatocyte-like lineage progression from pluripotency in 2-D culture. We then derive 3-D liver bud (LB) organoids by reconstituting hepatic, stromal, and endothelial interactions, and deconstruct heterogeneity during LB self-organization. We find that LB hepatoblasts differentiate towards hepatocyte fate, and in addition express epithelial migration signatures characteristic of organ budding. We identify hypoxia and inflammation signatures in endothelial and mesenchymal cells, which we suggest induce LB vasculogenesis. We use network analysis to predict autocrine and paracrine signaling in LBs, and show that VEGF crosstalk potentiates endothelial network formation and hepatoblast differentiation. Our molecular dissection reveals inter-lineage communication that is required for self-organization, and illuminates previously inaccessible aspects of human organ development and regeneration.

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Vascularised and functional human liver from an iPSC-derived organ bud transplant

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Vascularised and functional human liver from an iPSC-derived organ bud transplant

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Project description:Organ to organ interactions have not yet been modeled with human organoid cultures. This work demonstrates the coupling of intestinal and liver organoids recapitulates aspects of enterohepatic bile signaling. The integration of organoids can be used to probe intra-organ interactions. Single cell RNA-Seq studies were performed in human liver organoids to examine the heterogeneity of the cultures.

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2021-06-29 | PXD020099 | Pride

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