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Transcriptomic Profiling of Vagal and Sacral Level Neural Crest Cell from Mouse Embryos Using Next Generation Sequencing

ABSTRACT: Transcriptomic Profiling of Vagal and Sacral Level Neural Crest Cell from Mouse Embryos Using Next Generation Sequencing

PROVIDER: PRJNA741217 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR14904532_1.fastq.gz	Fastqsanger.gz
	SRR14904532_2.fastq.gz	Fastqsanger.gz
	SRR14904533_1.fastq.gz	Fastqsanger.gz
	SRR14904533_2.fastq.gz	Fastqsanger.gz
	SRR14904534_1.fastq.gz	Fastqsanger.gz

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Transcriptomic Profiling of Vagal and Sacral Level Neural Crest Cell from Mouse Embryos Using Next Generation Sequencing

Project description:The ENS of vertebrates develops from neural crest cell (NCC) deriving from mainly the vagal neural crest, while NCCs from the sacral level to a less extent. In mouse embryos, the vagal NCCs emigrate from the neural tube adjacent to the somite level from 1-7 at Embryonic day (E)9.0, and sacral NCCs emigrate from the neural tube adjacent to the level of somites caudal to somite 24 in the mouse (in the chick, caudal to somite 28) at E9.5. The spatial difference in cell colonization between vagal and sacral NCCs is that vagal NCCs completely colonize the whole gut, while the distribution of sacral NCCs is only restricted to the hindgut segment. To determine the differences between these two groups of cells, we isolated vagal and sacral NCCs by neural tube explant culture and then performed high-throughput RNA-seq to examine the transcriptional variation. We analyzed that differentially expressed genes (DEGs) by gene ontology (GO) analysis in which the DEGs were enriched in cell adherin, proliferation, transcriptional regulation, et al. This study might help to explore the underlying basis for the different cell behaviors between vagal and sacral NCCs during mouse embryonic development.

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Single-cell profiling coupled with lineage analysis reveals vagal and sacral neural crest contributions to the developing enteric nervous system

Project description:During development, much of the enteric nervous system (ENS) arises from the vagal neural crest that emerges from the caudal hindbrain and colonizes the entire gastrointestinal tract. However, a second contribution to the ENS comes from the sacral neural crest that arises in the caudal neural tube and populates the post-umbilical gut. By coupling single cell transcriptomics with axial-level specific lineage tracing in avian embryos, we compared the contributions of embryonic vagal and sacral neural crest cells to the pre-umbilical and post-umbilical chick ENS and the associated peripheral ganglia (the Nerve of Remak and pelvic plexuses) at embryonic day (E) 10.

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hPSC-derived Sacral Neural Crest Enables Rescue in a Severe Model of Hirschsprung’s Disease [ATAC-seq]

Project description:The enteric nervous system (ENS) is derived from both the vagal and sacral component of the neural crest (NC). Here, we present the derivation of sacral ENS precursors from human PSCs via timed exposure to FGF, WNT and to GDF11 to enable posterior patterning and transition from posterior trunk to sacral NC identity respectively. Using a SOX2::H2B-tdTomato/ T::H2B-GFP dual reporter hPSC line, we demonstrate that both trunk and sacral NC emerge from a double-positive neuro-mesodermal progenitor (NMP). Vagal and sacral NC precursors yield distinct neuronal subtypes and migratory behaviors in vitro and in vivo. Remarkably, xenografting of both vagal and sacral NC lineages is required to rescue a mouse model of total aganglionosis, suggesting novel opportunities in the treatment of severe forms of Hirschsprung’s disease.

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Project description:Ectoderm-derived neural crest is a transient structure arising during early embryogenesis in vertebrates. Neural crest consists of four derivatives based on their anterior- to posterior location along the body axis; cranial, vagal, trunk and sacral, respectively. We recently showed that trunk neural crest-specific gene MOXD1 functions as a tumor suppressor in trunk neural crest-derived childhood cancer form neuroblastoma and is essential for proper development of healthy adrenal glands. However, the role of MOXD1 during early embryogenesis is not known. Here, we conditionally knocked out MOXD1 in trunk neural crest cells before they become lineage-committed, using a CRISPR/Cas9 approach in chick embryos. Assessment of embryo growth showed that knockout of MOXD1 delayed development with knockout embryos being smaller. RNA sequencing of trunk-derived neural crest cells from control and knockout embryos showed enrichment of genes connected to gland development, copper ion metabolism and neuroblastoma progression. In conclusion, MOXD1 is important during early and prolonged embryonic development with effects on gland formation, possibly mediated via its role in copper metabolism.

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Project description:Neural crest cells are multipotent embryonic progenitors that give rise to a large number of cell types in a vertebrate embryo, thus, sometimes being considered as a 4th germ layer. Neural crest cells originate within the dorsal neural tube at the time of its closure, delaminate and migrate to multiple destinations. The paths of fate selection and differentiation in the neural crest cells are not fully understood. The analysis of open chromatin regions at single cell level will help to clarify the genetic programs behind the development of a vagal neural crest stream.

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Project description:Neural crest cells exemplify cellular diversification from a multipotent progenitor population. However, the full sequence of molecular choices governing the emergence of neural crest heterogeneity from the ectoderm remains elusive. Gene regulatory networks govern these steps of embryonic development and cell specification towards definitive neural crest. Here, we combine ultra-dense single cell transcriptomes with machine-learning strategies and experimental validation to provide a comprehensive gene regulatory network driving vertebrate neural crest fate diversification, from induction to early migration stages. Transcription factor connectome and bifurcation analyses demonstrate emergence of early neural crest fates at the neural plate stage, alongside an unbiased multipotent neural crest lineage persisting until after epithelial-mesenchymal transition. We also define a new and transient neural border zone state, preceding choice between neural crest and placodes during gastrulation. Theis combination of experimental tests, with Machine Learning broadly applicable to single cell transcriptomics, deciphers the circuits driving cranial and vagal neural crest formation and provides a general model for investigating vertebrate GRNs in development, evolution and disease.

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