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Wound-induced neoblast specialization in S. mediterranea

ABSTRACT: We report the expression of mRNA transcripts in X1 neoblast isolated by FACS followin amputation of the head (anterior wounding) and amputation of the pharyx and tail (posterior wounding) at 0 and 48 hours

ORGANISM(S): Schmidtea mediterranea

PROVIDER: GSE57226 | GEO | 2014/08/19

SECONDARY ACCESSION(S): PRJNA245936

REPOSITORIES: GEO

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Wound-induced neoblast specialization in S. mediterranea

Project description:We report the expression of mRNA transcripts in X1 neoblast isolated by FACS followin amputation of the head (anterior wounding) and amputation of the pharyx and tail (posterior wounding) at 0 and 48 hours RNA-sequencing of pre-pharyngeal X1 cells from anterior and posterior facing wounds at 0 and 48 hrs after wounding in S. mediterranea

2014-08-19 | E-GEOD-57226 | biostudies-arrayexpress

Neoblast expression in head and tail regeneration

Project description:X1 neoblasts (G2/S/M cells) were isolated by FACS from injury site-proximal tissue in a timeseries during head (anterior) and tail (posterior) regeneration in Schmidtea mediterranea 24 samples: 2 treatments (head versus tail regeneration), 3 timepoints (0,24,48,72 hours post amputation), 3 biological replicates each condition

2014-05-01 | E-GEOD-56178 | biostudies-arrayexpress

Neoblast expression in head and tail regeneration

2014-05-01 | GSE56178 | GEO

Digital Gene Expression profiling of Schmidtea mediterranea stem cells.

Project description:The freshwater planarian Schmidtea mediterranea is well known by its amazing regeneration capabilities thanks to the presence of adult stem cells, the neoblasts, the only proliferative cells and responsible for the differentiation in all the cell types of the organism. This study involves the creation of separated transcript libraries from both, isolated neoblasts and differentiated cells, as well as their posterior sequencing and quantification through Digital Gene Expression (DGE) for the characterization of the neoblast transcriptome. Three DGE libraries were produced from FACS isolated cell populations X1 (proliferating stem cells, S/G2/M), X2 (a mix of proliferating stem cells and stem cell progeny, G0/G1) and Xin (differentiated cells, G0/G1). Cells were isolated from a pool of 32 regenerating animals two days after being cut off pre- and post-pharingeally to trigger regeneration and neoblast proliferation.

2015-05-07 | E-GEOD-51681 | biostudies-arrayexpress

Neoblast specialization in regeneration of the planarian Schmidtea mediterranea.

Project description: Not available

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Schmidtea mediterranea

Project description:Neoblast expression in head and tail regeneration

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RNA Seq analysis of neoblasts from Schmidtea mediterranea treated with RNAi against zfp1, p53, or unc22 to identify factors involved in neoblast differentiation.

Project description:Epidermis is essential for animal survival, providing both a protective barrier and cellular sensor to the external environment. Interestingly, the epidermes of different species show broad morphological and functional diversity yet it is unclear whether this diversity came from modification of an existing gene regulatory network or de novo innovation of new genes. Here we identify the transcriptional regulators underlying the differentiation program of planarian epidermal lineage. We classify Smed-p53 as the most upstream molecule in this transcriptional cascade, suggesting a potentially conserved role for this gene in epidermal differentiation similar to TP63 in vertebrates. Moreover, we find that homologs of Sox and Pax family transcription factors, Smed-soxP-3 and Smed-pax-5, act cooperatively to activate the expression of epidermal markers. Together, these data show that planarian epidermal differentiation is regulated by a combination of conserved elements (p53/p63), recruitment of a non-conventional transcription module (soxP-3/pax-5), and novel genes (prog); they also suggest that specialized adpatations, such as epidermal mucus-secretion, arise from complex changes to gene networks. This experiment aims to identify regulators involved in epidermal differentiation at the neoblast stage by using RNA Seq to examine transcriptional changes in neoblasts (X1 population) isolated from animals treated with zfp-1 or p53 dsRNA.

2016-09-01 | GSE80544 | GEO

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

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Digital Gene Expression profiling of Schmidtea mediterranea stem cells.

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