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Differential Nodal level promotes mesendoderm cell fate segregation mediated by chromatin organization

ABSTRACT: Purpose: To investigate the mechanism of prechordal plate and anterior endoderm separation . Methods: Nodal injected explants (injected with 10pg ndr2 mRNA) constructed from lft1 mutants and ndr1 morphants were harvested at 6hpf. Libraries were prepared using Chromium Controller and Chromium Single Cell 3’Library & Gel Bead Kit v3 (10x Genomics, PN-1000075) according to the manufacturer’s protocol for 10000 cells recovery. For single-cell multiomics, zebrafish embryos at 6 hpf were harvested. Libraries were prepared using Chromium Next GEM Single Cell Multiome ATAC + Gene Expression Reagent Bundle (10x Genomics, 4 rxns PN-1000285) according to the manufacturer’s protocol for 10000 cells recovery. Results: A total of 10,614 single-cell transcriptomes and 4,335 multiomics were collected after stringent quality control measures. Conclusions: A slight bias in Nodal signaling promotes a differential chromatin structure between prechordal plate and endoderm, which drives a differential expression of those key regulators, such as gsc and ripply1 in these two cell lineages, and further regulates mesendoderm cell fate separation.

ORGANISM(S): Danio rerio

PROVIDER: GSE223636 | GEO | 2023/01/28

REPOSITORIES: GEO

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