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Xenopus laevis

ABSTRACT: On the relationship of protein and mRNA dynamics in vertebrate embryonic development [RiboZero]

OTHER RELATED OMICS DATASETS IN: PXD002349

PROVIDER: PRJNA298393 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR2614100_1.fastq.gz	Fastqsanger.gz
	SRR2614100_2.fastq.gz	Fastqsanger.gz
	SRR2614110_1.fastq.gz	Fastqsanger.gz
	SRR2614110_2.fastq.gz	Fastqsanger.gz
	SRR2614101_1.fastq.gz	Fastqsanger.gz

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Xenopus laevis

Project description:On the relationship of protein and mRNA dynamics in vertebrate embryonic development [polyA]

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Xenopus laevis

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On the relationship of protein and mRNA dynamics in vertebrate embryonic development

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Xenopus laevis kidney-induced animal caps nanoLC-MS/MS - Xenopus Ssbp2 is required for embryonic pronephros morphogenesis and terminal differentiation.

Project description:The nephron, functional unit of the vertebrate kidney, is specialized in metabolic wastes excretion and body fluids osmoregulation. Given the high evolutionary conservation of gene expression and segmentation patterning between mammalian and amphibian nephrons, the Xenopus laevis pronephric kidney offers a simplified model for studying nephrogenesis. The Lhx1 transcription factor plays critical roles in kidney development, regulating target gene expression by forming multiprotein complexes with LIM binding protein 1 (Ldb1). However, few Lhx1-Ldb1 cofactors have been identified for this organ formation. By tandem- affinity purification from kidney-induced Xenopus animal caps, we identified single-stranded DNA binding protein 2 (Ssbp2) to interact with the Ldb1-Lhx1 complex. Ssbp2 is expressed in the Xenopus pronephros, and knockdown prevents normal morphogenesis and differentiation of the glomus and the convoluted renal tubules. We demonstrate a role for a member of the Ssbp family in kidney organogenesis and provide evidence of a fundamental function for the Ldb1-Lhx1-Ssbp transcriptional complexes in embryonic development.

2023-10-24 | PXD041761 | Pride

Geminin-regulated genes in the Xenopus laevis embryonic ectoderm

Project description:Geminin cooperates with Polycomb to restrain multi-lineage commitment in the early embryo: Transient maintenance of a pluripotent embryonic cell population followed by the onset of multi-lineage commitment is a fundamental aspect of development. However, molecular regulation of this transition is not well characterized in vivo. Here we demonstrate that the nuclear protein Geminin is required to restrain commitment and spatially restrict mesoderm, endoderm, and non-neural ectoderm to their proper locations in the Xenopus embryo. We used microarray analyses to demonstrate that Geminin overexpression represses many genes associated with cell commitment and differentiation, while elevating expression levels of genes that maintain pluripotent early and immature neurectodermal cell states. We characterized Geminin’s relationship to cell signaling and found that Geminin broadly represses Activin-, FGF-, and BMP-mediated cell commitment. Conversely, Geminin knockdown enhances commitment responses to growth factor signaling and causes ectopic mesodermal, endodermal, and epidermal fate commitment in the embryo. We also characterized Geminin’s functional relationship with transcription factors that had similar activities and found that Geminin represses commitment independent of Oct4 ortholog (Oct25/60) activities, but depends upon intact Polycomb repressor function. Consistent with this, chromatin immunoprecipitation assays directed at mesodermal genes demonstrate that Geminin promotes Polycomb binding and Polycomb-mediated repressive histone modifications, while inhibiting modifications associated with gene activation. This work defines Geminin as an essential regulator of the embryonic transition from pluripotency through early multi-lineage commitment, and demonstrates that functional cooperativity between Geminin and Polycomb contributes to this process.

2010-12-06 | GSE25158 | GEO

Xenopus laevis

Project description:Studies on Xenopus laevis intestine reveal biological pathways underlying vertebrate gut adaptation from embryo to adult

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[E-MTAB-369] Transcription profiling by array of Xenopus laevis embryos at 15 different stages

Project description:Transcription profiling of X.laevis development. The experiment were perfomed as a part of our Vertebrate Evo-Devo project. The aim of the project is to compare transcription profiles of normal (unmanipulated, wild-type, whole embryo) vertebrate embryos.

2011-04-05 | GSE28390 | GEO

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