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An Lgr5-independent developmental lineage is involved in mouse intestinal regeneration

ABSTRACT: An Lgr5-independent developmental lineage is involved in mouse intestinal regeneration

PROVIDER: PRJNA1092561 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR28469932_1.fastq.gz	Fastqsanger.gz
	SRR28469932_2.fastq.gz	Fastqsanger.gz
	SRR28469933_1.fastq.gz	Fastqsanger.gz
	SRR28469933_2.fastq.gz	Fastqsanger.gz
	SRR28469934_1.fastq.gz	Fastqsanger.gz

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An Lgr5-independent developmental lineage is involved in mouse intestinal regeneration

Project description:Collagenase/dispase treatment of intestinal tissue from adult mice generates cells growing in matrigel as immortal cystic spheroids in addition to differentiated organoids. Contrary to classical EDTA-derived organoids, these spheroids display poor intestinal differentiation and are independent of Rspondin/Noggin/EGF for growth. Their transcriptome resembles strikingly that of fetal intestinal spheroids, with downregulation of crypt base columnar cell (CBC) markers (Lgr5, Ascl2, Smoc2, Olfm4). In addition, they display upregulation of inflammatory and mesenchymal genetic programs, together with robust expression of YAP target genes. Lineage tracing, cell-sorting and single cell RNA sequencing experiments demonstrate that adult spheroid-generating cells belong to a hitherto undescribed developmental lineage, independent of Lgr5+ve CBCs, and are involved in regeneration of the epithelium following CBC ablation

2025-03-19 | GSE262572 | GEO

An Lgr5-independent developmental lineage is involved in mouse intestinal regeneration II

Project description:Collagenase/dispase (CD fraction) treatment of intestinal tissue from adult mice generates cells growing in matrigel as immortal cystic spheroids in addition to differentiated organoids. Contrary to classical EDTA-derived organoids, these spheroids display poor intestinal differentiation and are independent of Rspondin/Noggin/EGF for growth. Their transcriptome resembles strikingly that of fetal intestinal spheroids, with downregulation of crypt base columnar cell (CBC) markers (Lgr5, Ascl2, Smoc2, Olfm4). In addition, they display upregulation of inflammatory and mesenchymal genetic programs, together with robust expression of YAP target genes. Lineage tracing, cell-sorting and single cell RNA sequencing experiments demonstrate that adult spheroid-generating cells belong to a hitherto undescribed developmental lineage, independent of Lgr5+ve CBCs, and are involved in regeneration of the epithelium following CBC ablation

2025-03-19 | GSE262855 | GEO

An Lgr5-independent developmental lineage is involved in mouse intestinal regeneration II

Project description:An Lgr5-independent developmental lineage is involved in mouse intestinal regeneration II

| PRJNA1093487 | ENA

An Lgr5-independent developmental lineage is involved in mouse intestinal regeneration [scRNA-Seq]

2025-03-19 | GSE262537 | GEO

An Lgr5-independent developmental lineage is involved in mouse intestinal regeneration (ATAC seq)

2025-03-19 | GSE262871 | GEO

An Lgr5-independent developmental lineage is involved in mouse intestinal regeneration [scRNA-Seq]

Project description:An Lgr5-independent developmental lineage is involved in mouse intestinal regeneration [scRNA-Seq]

| PRJNA1092252 | ENA

An Lgr5-independent developmental lineage is involved in mouse intestinal regeneration (ATAC seq)

Project description:An Lgr5-independent developmental lineage is involved in mouse intestinal regeneration (ATAC seq)

| PRJNA1094423 | ENA

An Lgr5-independent developmental lineage is involved in mouse intestinal regeneration [Organoids vs Spheroids in sandwich protocol]

2025-03-19 | GSE262657 | GEO

An Lgr5-independent developmental lineage is involved in mouse intestinal regeneration [Organoids vs Spheroids in sandwich protocol]

Project description:An Lgr5-independent developmental lineage is involved in mouse intestinal regeneration [Organoids vs Spheroids in sandwich protocol]

| PRJNA1092731 | ENA

Conditional Overexpression of Serpine2 Promotes Hair Cell Regeneration from Lgr5+ Progenitors in the Neonatal Mouse Cochlea

Project description:Neonatal cochlear Lgr5+ progenitors can regenerate hair cells (HCs), and this process is regulated by several genes and signaling pathways. However, this regeneration ability is limited, and whether additional genes are involved in this process remains unknown. Serpine2 was shown to participate in regulating proliferation and differentiation of cochlear Lgr5+ progenitors in our previous in vitro study. Here, we explored the expression pattern and in vivo roles of Serpine2 in HC regeneration by constructing transgenic mice in which Serpine2 is conditionally overexpressed in cochlear Lgr5+ progenitors. We found that Serpine2 is expressed in the mouse cochlea after birth with a downward trend as the mice aged. In addition, Serpine2 conditional overexpression in vivo in Lgr5+ progenitors of neonatal mice cochlea resulted in an increase number of ectopic HCs in a dose-dependent manner. And Serpine2 knockdown ex vivo and in vivo can inhibit HC regeneration. EdU assay and lineage tracing assay demonstrated that these ectopic HCs likely originated from Lgr5+ progenitors through direct trans-differentiation rather than through mitotic regeneration. Moreover, snRNA-seq analysis and RT-qPCR results revealed that Serpine2 cOE likely induces HC regeneration via inhibiting sonic hedgehog (SHH) signal pathway and inducing Atoh1 and Pou4f3 transcription factor. In brief, our data indicate that Serpine2 plays a pivotal role in HC regeneration from Lgr5+ progenitors in the neonatal mouse cochlea, and this suggests a new avenue for future research into HC regeneration.

2025-05-04 | GSE289514 | GEO

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