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Schmidtea mediterranea

ABSTRACT: Single-muscle-cell transcriptome profiling along the planarian anteroposterior axis

PROVIDER: PRJNA299816 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR2815350.fastq.gz	Fastqsanger.gz
	SRR2815360.fastq.gz	Fastqsanger.gz
	SRR2815370.fastq.gz	Fastqsanger.gz
	SRR2815380.fastq.gz	Fastqsanger.gz
	SRR2815390.fastq.gz	Fastqsanger.gz

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Schmidtea mediterranea

Project description:Gene expression domains along the planarian A/P axis

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Cell type transcriptome atlas for the planarian Schmidtea mediterranea

Project description:The transcriptome of a cell dictates its unique cell-type biology. We used single-cell RNA sequencing to determine the transcriptomes for essentially every cell type of a complete animal: the regenerative planarian Schmidtea mediterranea. Planarians contain a diverse array of cell types, possess lineage progenitors for differentiated cells (including pluripotent stem cells), and constitutively express positional information, making them ideal for this undertaking. We generated data for 66,783 cells, defining transcriptomes for known and many previously unknown planarian cell types and for putative transition states between stem and differentiated cells. We also uncovered regionally expressed genes in muscle, which harbors positional information. Identifying the transcriptomes for potentially all cell types for many organisms should be readily attainable and is a powerful new approach to metazoan biology.

2018-04-17 | GSE111764 | GEO

Schmidtea mediterranea

Project description:Planarian stem cell transcriptome

| PRJNA167022 | ENA

Transcriptional profiling of laser captured intestinal tissue from the planarian Schmidtea mediterranea

Project description:Proper function and repair of the digestive system are vital to most animals. Deciphering the mechanisms involved in these processes requires an atlas of gene expression and cell types. Here, we applied laser-capture microdissection (LCM) and RNA-seq to characterize the intestinal transcriptome of Schmidtea mediterranea, a planarian flatworm that can regenerate all organs, including the gut. We identified hundreds of genes with intestinal expression undetected by previous approaches. Systematic analyses revealed extensive conservation of digestive physiology and cell types with other animals, including humans. Furthermore, spatial LCM enabled us to uncover previously unappreciated regionalization of gene expression in the planarian intestine along the medio-lateral axis, especially among intestinal goblet cells. Finally, we identified two intestine-enriched transcription factors that specifically regulate regeneration (hedgehog signaling effector gli-1) or maintenance (RREB2) of goblet cells. Altogether, this work provides resources for further investigation of mechanisms involved in gastrointestinal function, repair and regeneration.

2020-03-20 | GSE135351 | GEO

The head-regeneration transcriptome of the planarian Schmidtea mediterranea

Project description:The head-regeneration transcriptome of the planarian Schmidtea mediterranea

2011-07-15 | E-MTAB-607 | biostudies-arrayexpress

HOX gene complement and expression in the planarian Schmidtea mediterranea

Project description:Background: Freshwater planarians are well known for their regenerative abilities. Less well known is how planarians maintain spatial patterning in long-lived adult animals or how they re-pattern tissues during regeneration. HOX genes are good candidates to regulate planarian spatial patterning, yet the full complement or genomic clustering of planarian HOX genes has not yet been described, primarily because only a few have been detectable by in situ hybridization, and none have given morphological phenotypes when knocked down by RNAi. Results: Because the planarian Schmidtea mediterranea (S. med) is unsegmented, appendage-less, and morphologically simple, it has been proposed that it may have a simplified HOX gene complement. Here we argue against this hypothesis and show that S. med has a total of 13 HOX genes, which represent homologs to all major axial categories, and can be detected by whole-mount in situ hybridization using a highly-sensitive method. In addition, we show that planarian HOX genes do not cluster in the genome, yet 5/13 have retained aspects of axially-restricted expression. Finally, we confirm HOX gene axial expression by RNA-deep-sequencing 6 anterior-to-posterior “zones” of the animal, which we provide as a dataset to the community to discover other axially-restricted transcripts. Conclusions: Freshwater planarians have an unappreciated HOX gene complexity, with all major axial categories represented. However, we conclude based on adult expression patterns that planarians have a derived body plan and their asexual lifestyle may have allowed for large changes in HOX expression from the last common ancestor between arthropods, flatworms, and vertebrates. Using our in situ method and axial zone RNAseq data, it should be possible to further understand the pathways that pattern the anterior-posterior axis of adult planarians.

2016-03-08 | GSE78937 | GEO

Schmidtea mediterranea

Project description:Gene expression profiling of regenerating planarian tails after inhibition of myoD and follistatin

| PRJNA387024 | ENA

Schmidtea mediterranea

Project description:A mex3 homolog is required for differentiation during planarian stem cell lineage development

| PRJNA283132 | ENA

RNA sequencing of single cells from the midline posterior extremity in planarian Schmidtea mediterranea

Project description:RNA sequencing of single cells from the midline posterior tip of the tail and posterior blastema in planarian Schmidtea mediterranea identified new posterior-pole enriched genes

2019-05-25 | GSE121047 | GEO

Transcriptome analysis reveals strain-specific and conserved stemness genes in Schmidtea mediterranea

Project description:The transcriptome of the planarian Schmidtea mediterranea is not well characterized. We have used RNA-Seq to characterize the transcriptome in both sexual and asexual strains of S. mediterranea from both untreated and irradiated animals. Moreover, we have performed RNA-Seq on RNA purified from FACS sorted neoblasts and differentiated cells. Together these studies expand our understanding of the planarian transcriptome and have identified strain-specific, neoblast-specific, and conserved transcripts. RNA-Seq was performed on RNA isolated from untreated and irradiated S. mediterranea animals from both the sexual and asexual strains, on FACS purified X1 neoblasts, X2 neoblasts, and Xins differentiated cells. One of the raw data files for GSM847465 is missing. The fasta file is provided at http://genome.vcell.uchc.edu/GenomeData02/Graveley_Lab_Public_Data/Planarian/S.mediterranea_SexNIRmRNA3.fa.gz

2012-04-24 | E-GEOD-34326 | biostudies-arrayexpress

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