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Xenopus laevis

ABSTRACT: mRNA sequencing of interleukin-11 knocked down tadpoles in Xenopus tail regeneration

PROVIDER: PRJDB5211 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	DRR073105.fastq.gz	Fastqsanger.gz
	DRR073106.fastq.gz	Fastqsanger.gz
	DRR073107.fastq.gz	Fastqsanger.gz
	DRR073108.fastq.gz	Fastqsanger.gz
	DRR073109.fastq.gz	Fastqsanger.gz

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Single cell RNA-seq of tail tissue from regeneration-competent and -incompetent Xenopus laevis tadpoles

Project description:Xenopus laevis tadpoles differ in their regenerative potential according to their developmental stage. Here, we focus on tail regeneration following amputation. By comparing the regenerative response during the naturally occurring regeneration-competent and -incompetent stages, scRNAseq can reveal cell type changes that are required for successful regeneration.

2019-04-23 | E-MTAB-7716 | biostudies-arrayexpress

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Thyroid hormone induced resorption of tail in Xenopus laevis tadpole

Project description:Premetamorphic Xenopus laevis tadpole tail respond to thyroid hormone by resorption. The goal of this experiment is to identify the genes involved in the TH-induced resorption tadpole tail and compare it to TH-induced proliferation and differentiation program in tadpole limb and brain. Xenopus tadpoles (NF54) were treated with 100 nM T3 in 0.1 x MMR for another 24h and 48h or without T3 for 48h (control group). NF 61 tadpoles were in 0.1 X MMR till they reached NF stage 62. The tails were dissected after the experiment. Keywords: development or differentiation design,organism part comparison design,reference design,replicate design,time series design

2005-10-04 | GSE3405 | GEO

Transcription profiling of brains, hindlimbs and tails of Xenopus laevis tadpoles after treatment with thyroid hormone

Project description:Premetamorphic Xenopus laevis tadpole tail respond to thyroid hormone by resorption. The goal of this experiment is to identify the genes involved in the TH-induced resorption tadpole tail and compare it to TH-induced proliferation and differentiation program in tadpole limb and brain. Xenopus tadpoles (NF54) were treated with 100 nM T3(triioodthyronine) in 0.1 x MMR for another 24h and 48h or without T3 for 48h (control group). NF 61 tadpoles were in 0.1 X MMR till they reached NF stage 62. The tails were dissected after the experiment.

2006-11-08 | E-MNIA-94 | biostudies-arrayexpress

Xenopus laevis

Project description:Single cell RNA-seq of tail tip, tail stump and regenerating tails of Xenopus laevis tadpoles

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Single cell RNA-seq of limb tissue from regeneration-competent, -restricted and -incompetent Xenopus laevis tadpoles

Project description:Xenopus laevis tadpoles display a decreasing capacity to regenerate their limbs following injury according to developmental stage. By comparing the regenerative response during the naturally occurring regeneration-competent, -restricted and -incompetent stages, scRNAseq can reveal cell type changes that are required for successful regeneration.

2021-05-17 | E-MTAB-9104 | biostudies-arrayexpress

Evi5 is required for Xenopus limb and tail regeneration

Project description:Amphibians such as the salamanders and the African clawed frog Xenopus are great models for regeneration studies because they can fully regenerate their lost organs. While axolotl can regenerate damaged organs throughout its lifetime, Xenopus has a limited regeneration capacity after metamorphosis. The ecotropic viral integrative factor 5 (Evi5), a cell-cycle-regulated protein that prevents cells from entering mitosis prematurely, is of great interest for it is highly upregulated in the limb blastema of axolotls, but its expression level remains unchanged in the fibroblastema of postmetamorphic frogs. Yet, its role in regeneration competent context in Xenopus has not been fully analyzed. Here we show that Evi5 is also upregulated in Xenopus tadpoles after limb and tail amputation, as it is in axolotls. Down-regulation of Evi5 with morpholino antisense oligos (Mo) impairs wound healing and blastema formation in limbs and tails in both axolotls and Xenopus tadpoles, suggesting a conserved function for Evi5 in regeneration. Using skin punch as a healing model we show that Evi5 is also involved in cell migration during wound healing. RNA-sequencing analysis shows that in addition to reduced signaling of Lepr, Pdgfa, Gdf5, evi5 Mo also downregulate lysine demethylases kdm6b and kdm7a, which are also required for limb regeneration. Thus, our results demonstrate that Evi5 plays a critical role in the regeneration of multiple systems in amphibians.

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Xenopus laevis

Project description:Identification of genes associated with lens regeneration from the cornea in Xenopus laevis tadpoles

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Identification of genes associated with lens regeneration from the cornea in Xenopus laevis tadpoles

Project description:Surgical removal of the lens from larval Xenopus laevis results in a rapid transdifferention of central corneal cells to form a new lens. The trigger for this process is understood to be an induction event arising from the unprecedented contact between the cornea and the vitreous humour that occurs following lens removal. The identity of this trigger is unknown. Here, we have used a functional transgenic approach to show that BMP signalling is required for lens regeneration and a microarray approach to identify genes that are upregulated specifically during this process. Analysis of the array data strongly implicates Wnt signalling and Pitx transcription factors in this process. Pluripotency genes, in contrast, are not upregulated, supporting the idea that corneal cells transdifferentiate without returning to a stem cell state. Furthermore, several genes from the array were expressed in the forming lens during embryogenesis. One of these, nipsnap1, is a known direct target of BMP signalling. We suggest that, as with tail regeneration, activation of multiple developmental signalling pathways could drive lens regeneration from the cornea. Three biological replicates of each of three sample types were analysed. For each replicate, lens tissue (L) was derived from 5 lenses dissected from stage 50 tadpoles. Similarly, 7-8 corneas dissected from stage 50 tadpoles from which the lens had been removed 3 days previously were pooled for each biologocal replicate (R). These samples should contain tissue that is changing from cornea to lens, to regenerate the missing lens. Finally, 7-8 corneas from eyes of tadpoles at the same stage that had the cornea lifetd but the lens left in place 3 days earlier were pooled for each biological replicate (sham operated corneas, designated S).

2011-09-13 | E-GEOD-28014 | biostudies-arrayexpress

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