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Comparative Transcriptomics of Limb Regeneration: Identification of Conserved Expression Changes Among Three Species of Ambystoma [RNA-Seq]

ABSTRACT: Comparative Transcriptomics of Limb Regeneration: Identification of Conserved Expression Changes Among Three Species of Ambystoma [RNA-Seq]

PROVIDER: PRJNA480225 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR7499350_1.fastq.gz	Fastqsanger.gz
	SRR7499350_2.fastq.gz	Fastqsanger.gz
	SRR7499360_1.fastq.gz	Fastqsanger.gz
	SRR7499360_2.fastq.gz	Fastqsanger.gz
	SRR7499351_1.fastq.gz	Fastqsanger.gz

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Comparative Transcriptomics of Limb Regeneration: Identification of Conserved Expression Changes Among Three Species of Ambystoma [microarray]

Project description:Transcriptome studies are revealing the complex gene expression basis of limb regeneration in the primary salamander model – Ambystoma mexicanum (axolotl). To better understand this complexity, there is need to extend analyses to additional salamander species. Using microarray and RNA-Seq, we performed a comparative transcriptomic study using A. mexicanum and two other ambystomatid salamanders: A. andersoni, and A. maculatum. Salamanders were administered forelimb amputations and RNA was isolated and analyzed to identify 405 non-redundant genes that were commonly, differentially expressed 24 hours post amputation. Many of the upregulated genes are predicted to function in wound healing and developmental processes, while many of the downregulated genes are typically expressed in muscle. The conserved transcriptional changes identified in this study provide a high-confidence dataset for identifying factors that simultaneous orchestrate wound healing and regeneration processes in response to injury, and more generally for identifying genes that are essential for salamander limb regeneration.

2018-07-04 | GSE116615 | GEO

Comparative Transcriptomics of Limb Regeneration: Identification of Conserved Expression Changes Among Three Species of Ambystoma [RNA-Seq]

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Project description:Comparative Transcriptomics of Limb Regeneration in Ambystoma salamanders

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Comparative Transcriptomics of Limb Regeneration: Identification of Conserved Expression Changes Among Three Species of Ambystoma [microarray]

Project description:Comparative Transcriptomics of Limb Regeneration: Identification of Conserved Expression Changes Among Three Species of Ambystoma [microarray]

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Bolitoglossa ramosi differential expressed genes during limb regeneration

Project description:Tissue regeneration is widely distributed across the tree of life. Among vertebrates, salamanders possess an exceptional ability to regenerate amputated limbs and other complex structures. Thus far, molecular insights about limb regeneration have come from a relatively limited number of species from two closely related salamander families. To gain broader perspective on the molecular basis of limb regeneration and enhance the molecular toolkit of an emerging plethodontid salamander (Bolitoglossa ramosi), we used RNA-seq to generate transcript sequence data and identify 602 genes that are differentially expressed during limb regeneration. This list was further processed to identify a core set of genes that exhibit conserved expression changes between B. ramosi and the Mexican axolotl (Ambystoma mexicanum), and presumably their common ancestor approximately 180 million years ago. Our study highlights the importance of developing comparative gene expression data for studies of limb regeneration among salamanders. All animals used in this work were collected under the Contract on Genetic Access for scientific research for non commercial profit (Contrato de acceso a recursos genéticos para la investigación científica sin interés commercial) to Resources number 118–2015.

2018-09-26 | GSE105232 | GEO

Comparative transcriptomics of limb regeneration: Identification of conserved expression changes among three species of Ambystoma.

Project description:Transcriptome studies are revealing the complex gene expression basis of limb regeneration in the primary salamander model - Ambystoma mexicanum (axolotl). To better understand this complexity, there is need to extend analyses to additional salamander species. Using microarray and RNA-Seq, we performed a comparative transcriptomic study using A. mexicanum and two other ambystomatid salamanders: A. andersoni, and A. maculatum. Salamanders were administered forelimb amputations and RNA was isolated and analyzed to identify 405 non-redundant genes that were commonly, differentially expressed 24?h post amputation. Many of the upregulated genes are predicted to function in wound healing and developmental processes, while many of the downregulated genes are typically expressed in muscle. The conserved transcriptional changes identified in this study provide a high-confidence dataset for identifying factors that simultaneous orchestrate wound healing and regeneration processes in response to injury, and more generally for identifying genes that are essential for salamander limb regeneration.

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Comparative Transcriptional Profiling of the Axolotl Limb Identifies a Tripartite Regeneration-Specific Gene Program

Project description:Identifying the genetic program that induces limb regeneration in salamanders is an important resource for regenerative medicine, which currently lacks tools to promote regeneration of functional body structures. The genetic network underlying limb regeneration has been elusive due to the complexity of the injury response that occurs concomitant to blastema formation. Here we performed parallel expression profile time courses of non-regenerative lateral wounds versus amputated limbs in axolotl. We show that limb regeneration occurs in three distinguishable phases--early wound healing followed by a transition phase leading to establishment of the limb development program. By focusing on the transition phase, we identified 93 strictly regeneration-associated genes involved in oxidative stress response, chromatin modification, epithelial development and limb development. The specific expression of the genes was confirmed by in situ hybridization. Regeneration-specific expression databases are critical resources for understanding how regeneration-relevant phenotypes can be induced from adult cells Regeneration of the axolotl forelimb lower arm was compared with the healing of a deep lateral injury in a high density timecourse (uncut, 3h, 6h, 9h, 12h, 24h, 36h, 52h, 72h, 120h, 168h, 288h and 528h after injury). Three independent biological replicates were performed using separate cluches of animals. Amputated and lateral wound samples were made as matched contralateral samples of four pooled animals per timepoint.

2013-01-01 | E-GEOD-36451 | biostudies-arrayexpress

Identification of conserved and novel microRNAs during tail regeneration in the Mexican Axolotl

Project description:The Mexican axolotl (Ambystoma mexicanum) is one member of a select group of vertebrate animals that has retained the amazing ability to regenerate multiple body parts. In addition to being an important model system for regeneration, the axolotl is also a leading model system for developmental biologists. Many genes used in development have been identified to be reused again during regeneration, however how this molecular circuitry is controlled during regeneration is unknown. In recent years microRNAs have been identified as key regulators of gene expression during development, in many diseases and also in regeneration. Here we have used deep sequencing combined with qRT-PCR to identify microRNAs that are involved in regulating regeneration in axolotl. This approach has enabled us to identify well known families of microRNAs and in addition to identify putative novel microRNAs that differentially regulated in the regenerating tissue. These findings suggest that microRNAs may play key roles in managing the spatial and temporal expression of genes important for ensuring that the correct tissues are regenerated. small RNA Sequencing (2 samples) in Ambystoma Mexicanum

2015-09-11 | E-GEOD-72057 | biostudies-arrayexpress

Comparative Transcriptional Profiling of the Axolotl Limb Identifies a Tripartite Regeneration-Specific Gene Program

2013-01-01 | GSE36451 | GEO

Ambystoma mexicanum

Project description:Ambystoma mexicanum regeneration map

| PRJNA300706 | ENA