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Aristaless-like homeobox-3 is wound induced in muscle and stem cells and is required for planarian head regeneration

ABSTRACT: aristaless-like homeobox-3 is wound induced in muscle and stem cells and is required for planarian head regeneration

PROVIDER: PRJNA1008560 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR25740100_1.fastq.gz	Fastqsanger.gz
	SRR25740100_2.fastq.gz	Fastqsanger.gz
	SRR25740101_1.fastq.gz	Fastqsanger.gz
	SRR25740101_2.fastq.gz	Fastqsanger.gz
	SRR25740102_1.fastq.gz	Fastqsanger.gz

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aristaless-like homeobox-3 is wound induced in muscle and stem cells and is required for planarian head regeneration

Project description:To investigate the role of alx-3 in activating wound-induced transciptional programs during anterior regneneraiton, control(RNAi) and alx-3(RNAi) planarians were amputated below the pharynx and were allowed to regenerate for 0.5 hours post-amputation (HPA), 6HPA, 24HPA, 48HPA and 72HPA. Intact animals were are also included.Tissue from tail fragments and intact animals was collected at each time point for RNA extraction and cDNA synthesis. Gene expression profiling analysis was performed using data obtained from RNA-seq of planarian tissues at 5 timepoints after regeneraiton and in uninjured animals .

2023-09-04 | GSE241516 | 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

aristaless-like homeobox-3 is wound induced and promotes a low-Wnt environment required for planarian head regeneration.

Project description:The planarian Schmidtea mediterranea is a well-established model of adult regeneration, which is dependent on a large population of adult stem cells called neoblasts. Upon amputation, planarians undergo transcriptional wounding programs and coordinated stem cell proliferation to give rise to missing tissues. Interestingly, the Wnt signaling pathway is key to guiding what tissues are regenerated, yet less known are the transcriptional regulators that ensure proper activation and timing of signaling pathway components. Here, we have identified an aristaless-like homeobox transcription factor, alx-3, that is enriched in a population of putative neural-fated progenitor cells at homeostasis, and is also upregulated in stem cells and muscle cells at anterior-facing wounds upon amputation. Knockdown of alx-3 results in failure of head regeneration and patterning defects in amputated tail fragments. alx-3 is required for the expression of several early wound-induced genes, including the Wnt inhibitor notum, which is required to establish anterior polarity during regeneration. Together, these findings reveal a role for alx-3 as an early wound-response transcriptional regulator in both muscle cells and stem cells that is required for anterior regeneration by promoting a low-Wnt environment.

| S-EPMC10560571 | biostudies-literature

Vu2019 - Planarian double-head regeneration

Project description:This spatio-temporal model explores tissue polarity re-organization during planarian double-head formation upon regeneration with beta-catenin-1 RNAi treatment. Initial conditions for A and M polarity fields are chosen near the wild type pattern and the first 100 time steps are used to establish the typical wild type splay pattern. The induction of the ectopic head occurs at time-step 100 (interpreted as tail amputation time) at the position where the former tail was (right end), subsequently affects the nearby tissue with some lag and then re-polarizes the posterior half of the tissue from time-step 200 onward. Of these polarity fields, A represents the anterior-posterior polarization system provided by the core PCP pathway, M represents the medio-lateral polarization system provided by the Ft/Ds pathway and P represents the resulting superimposed and normalized polarization. P can be compared to the observable polarity data of ciliary rootlets. This simulation reproduces Figure 4D of the referenced paper. Parameter values correspond to the beta-catenin-1(RNAi) pattern as given in Table S2 of the referenced paper. The model file is in MorpheusML format and can be opened in the free, open-source multicellular modeling software Morpheus (https://morpheus.gitlab.io) to simulate the time course (movie) of the spatio-temporal dynamics.

2021-10-06 | MODEL2110050001 | BioModels

[E-MTAB-607] Transcription profiling by high throughput sequencing of the planarian Schmidtea mediterranea during head regeneration

Project description:The head-regeneration transcriptome of the planarian Schmidtea mediterranea ArrayExpress Release Date: 2011-07-15 Publication Title: The head-regeneration transcriptome of the planarian Schmidtea mediterranea Publication Author List: Thomas Sandmann, Matthias C. Vogg, Suthira Owlarn, Michael Boutros, and Kerstin Bartscherer Person Roles: submitter Person Last Name: Sandmann Person First Name: Thomas Person Mid Initials: Person Email: t.sandmann@dkfz.de Person Phone: +49 6221 42 1954 Person Address: Deutsches Krebsforschungszentrum, Im Neuenheimer Feld 580, D-69120 Heidelberg, Germany Person Affiliation: German Cancer Research Center

2012-01-20 | GSE30996 | GEO

The head-regeneration transcriptome of the planarian Schmidtea mediterranea

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

| PRJEB2469 | ENA

equinox is a planarian wound epidermis gene required for the initiation of regeneration

Project description:equinox is a planarian wound epidermis gene required for the initiation of regeneration

| PRJNA743075 | ENA

Large-scale, quantitative proteomics reveals key proteins required for planarian regeneration initiation

Project description:Multi-omics studies are increasingly used to decipher the mechanisms underlying tissue regeneration. However, the use of proteomics for such studies has been limited due to the high cost and relatively low throughput and reproducibility. The genes required for planarian regeneration have primarily been identified based on changes in mRNA transcripts; previous studies have not addressed the possibility of protein upregulation prior to detectable increases in transcript abundance during the early stages of planarian regeneration. Here, we used in-depth high-throughput proteomics approaches to analyze the model planarian Schmidtea mediterranea during regeneration and discovered 13 proteins that are essential regulators of key regeneration steps. Two of these proteins, Troponin T and MRPL18, are key regulators of regeneration initiation and showed increases in protein abundance prior to upregulation at the mRNA level. Extensive comparisons between proteomic and transcriptomic datasets suggested the critical mechanisms beyond the transcriptional level, such as the translational and post-translational levels. In summary, this study revealed key regulators of regeneration in a model organism; furthermore, it established an adaptable spectral library and comprehensive proteomics datasets, enabling future in-depth and multi-omics analyses of planarian biology.

2025-05-18 | GSE232894 | GEO

iTRAQ-Based Quantitative Proteomic Analysis of the Initiation of Head Regeneration in Planarians

Project description:The planarian Dugesia japonica has amazing ability to regenerate a head from the anterior ends of the amputated stump with maintenance of the original anterior-posterior polarity. Although planarians present an attractive system for molecular investigation of regeneration and research has focused on clarifying the molecular mechanism of regeneration initiation in planarians, but proteomic studies are still in the early stages. Here, a global proteomics analysis of regenerating head fragments in planarians at 0h, 2h and 6h after amputation was performed using isobaric tags for relative and absolute quantitation (iTRAQ)-based quantitative proteomics coupled with LC-MS/MS strategy. Then the significantly changed proteins were identified. The correlation betwwen protein expression profiles and signaling pathways/biological processes was analyzed by bioinformatics and systems biology.

2015-07-07 | PXD002100 | Pride

The planarian wound epidermis gene equinox is required for blastema formation in regeneration.

Project description:Regeneration often involves the formation of a blastema, an outgrowth or regenerative bud formed at the plane of injury where missing tissues are produced. The mechanisms that trigger blastema formation are therefore fundamental for regeneration. Here, we identify a gene, which we named equinox, that is expressed within hours of injury in the planarian wound epidermis. equinox encodes a predicted secreted protein that is conserved in many animal phyla. Following equinox inhibition, amputated planarians fail to maintain wound-induced gene expression and to subsequently undergo blastema outgrowth. Associated with these defects is an inability to reestablish lost positional information needed for missing tissue specification. Our findings link the planarian wound epidermis, through equinox, to regeneration of positional information and blastema formation, indicating a broad regulatory role of the wound epidermis in diverse regenerative contexts.

| S-EPMC9117669 | biostudies-literature

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