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Series GSE17993 Query DataSets for GSE17993
Status Public on Feb 25, 2010
Title Zebrafish heart regeneration
Organism Danio rerio
Experiment type Expression profiling by array
Summary Ischemic cardiopathy is the leading cause of death in the world, for which efficient regenerative therapy is not currently available. In mammals, after a myocardial infarction episode, the damaged myocardium is replaced by scar tissue featuring collagen deposition and tissue remodelling with negligible cardiomyocyte proliferation. Zebrafish, in contrast, display an extensive regenerative capacity as they are able to restore completely lost cardiac tissue after partial ventricular amputation. Due to the lack of genetic lineage tracing evidence, it is not yet clear if new cardiomyocytes arise from existing contractile cells or from an uncharacterised set of progenitors cells. Nonetheless, several genes and molecules have been shown to participate in this process, some of them being cardiomyocyte mitogens in vitro. Though questions as what are the early signals that drive the regenerative response and what is the relative role of each cardiac cell in this process still need to be answered, the zebrafish is emerging as a very valuable tool to understand heart regeneration and devise strategies that may be of potential value to treat human cardiac disease. Here, we performed a genome-wide transcriptome profile analysis focusing on the early time points of zebrafish heart regeneration and compared our results with those of previously published data. Our analyses confirmed the differential expression of several transcripts, and identified additional genes the expression of which is differentially regulated during zebrafish heart regeneration. We validated the microarray data by conventional and/or quantitative RT-PCR. For a subset of these genes, their expression pattern was analyzed by in situ hybridization and shown to be upregulated in the regenerating area of the heart. The specific role of these new transcripts during zebrafish heart regeneration was further investigated ex vivo using primary cultures of zebrafish cardiomyocytes and/or epicardial cells. Our results offer new insights into the biology of heart regeneration in the zebrafish and, together with future experiments in mammals, may be of potential interest for clinical applications.
Overall design In order to study zebrafish heart regeneration, a time course experiment was realized where amputated heart regenerating were compared to control heart. Samples in triplicate were extracted at 1, 3, 5 and 7 days post-amputation.
Contributor(s) Sleep E, Boue S, Fernandez C, Raya M, Richaud Y, Raya A, Izpisua-Belmonte J
Citation(s) 20179605
Submission date Sep 07, 2009
Last update date Jan 25, 2018
Contact name Stephanie Boue
Organization name CMRB
Street address Dr Aiguader 88
City Barcelona
ZIP/Postal code 08003
Country Spain
Platforms (1)
GPL1319 [Zebrafish] Affymetrix Zebrafish Genome Array
Samples (15)
GSM450363 Control heart - rep 1
GSM450364 Control heart - rep 2
GSM450365 Control heart - rep 3
BioProject PRJNA119275

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Series Matrix File(s) TXTHelp

Supplementary file Size Download File type/resource
GSE17993_RAW.tar 30.9 Mb (http)(custom) TAR (of CEL)
Raw data provided as supplementary file
Processed data included within Sample table

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