Mus musculus
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ABSTRACT:
PROVIDER: PRJNA213626 | ENA |
REPOSITORIES: ENA
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Project description:Genome-wide gene expression analysis of new cardiomyocytes (CMs) derived from resident c-kitpos endogenous cardiac stem cells (eCSCs) after myocardial injury by Isoproterenol (ISO) in mice. These data show that of new CMs derived from resident c-kitpos eCSCs have a gene expression profile that closely resembles the specific gene expression of adult cardiomyocytes. This result supports a role of c-kitpos eCSCs in the regeneration and repair of myocardial damage. To test the identity and the degree of differentiation of new cardiomyocytes (CMs) derived from resident c-kitpos endogenous cardiac stem cells (eCSCs) after myocardial injury by Isoproterenol (ISO) in mice. Global gene expression profiles by microarray was obtained in c-kitpos eCSCs, c-kitpos eCSC-derived YFPpos CMs and normal adult CMs. c-kitposCD45neg eCSCs were isolated from B6.129X1-Gt(ROSA)26Sortm1(EYFP)Cos/J mice and harvested at 4th passage (n=3). YFPpos cardiomyocytes were FACS sorted from left ventricle apex of Lentirius-c-kit/cre recombined B6.129X1-Gt(ROSA)26Sortm1(EYFP)Cos/J mice 28 days after ISO (N=3). Normal adult CMs were isolated from B6.129X1-Gt(ROSA)26Sortm1(EYFP)Cos/J mice (n=3).
2013-07-30 | E-GEOD-49318 | biostudies-arrayexpress
Project description:Genome-wide gene expression analysis of new cardiomyocytes (CMs) derived from resident c-kitpos endogenous cardiac stem cells (eCSCs) after myocardial injury by Isoproterenol (ISO) in mice. These data show that of new CMs derived from resident c-kitpos eCSCs have a gene expression profile that closely resembles the specific gene expression of adult cardiomyocytes. This result supports a role of c-kitpos eCSCs in the regeneration and repair of myocardial damage.
2013-07-30 | GSE49318 | GEO
Project description:Cardiac hypertrophy consists in the enlargement of cardiomyocytes and alteration of the extracellular matrix organization in response to physiological or pathological stress. In pathological hypertrophy ocuurs myocardial damage, loss of cardiomyocytes, fibrosis, inflammation, sarcomere disorganization and metabolic impairment, leading to cardiac dysfunction.The rodent model treated with isoproterenol induces cardiac hypertrophy due the constant activation of β-adrenergic receptors. We conducted a quantitative label-free proteomic analysis of cardiomyocytes isolated from hearts of mice treated or not with isoproterenol to better understand the molecular bases of cellular response due to isoproterenol-induced injury.
2020-05-27 | PXD013020 | Pride
Project description:Heart failure (HF) is a leading cause of morbidity and mortality. As adult cardiomyocytes (CMs) have little regenerative capacity, after myocardial infarction (MI), resident cardiac fibroblasts (CFs) synthesize extracellular matrix to form scar tissues, resulting in myocardial remodeling and HF. Thus, both cardiac regeneration and fibrosis are therapeutic targets for chronic MI. We previously reported that fibroblasts were directly reprogrammed into induced CMs (iCMs) by overexpression of cardiogenic transcription factors in vitro and in vivo in acute MI. Here we show that in vivo cardiac reprogramming generated iCMs from resident CFs, improved cardiac function, and reversed fibrosis in chronic MI using a novel transgenic mouse system. Transcriptome analysis revealed that in vivo cardiac reprogramming altered the interstitial cell landscape, suppressed signs of fibrosis and inflammation, and activated the angiogenic program. Thus, in vivo cardiac reprogramming may be a promising approach for chronic HF.
2022-12-12 | GSE183932 | GEO
Project description:Heart failure (HF) is a leading cause of morbidity and mortality. As adult cardiomyocytes (CMs) have little regenerative capacity, after myocardial infarction (MI), resident cardiac fibroblasts (CFs) synthesize extracellular matrix to form scar tissues, resulting in myocardial remodeling and HF. Thus, both cardiac regeneration and fibrosis are therapeutic targets for chronic MI. We previously reported that fibroblasts were directly reprogrammed into induced CMs (iCMs) by overexpression of cardiogenic transcription factors in acute and chronic MI. Here we show that in vivo cardiac reprogramming improved cardiac function, and reversed cardiac remodeling in chronic MI using a novel transgenic mouse system. Transcriptome analysis revealed that in vivo cardiac reprogramming suppressed signs of fibrosis and inflammation. Thus, in vivo cardiac reprogramming may be a promising approach for chronic HF.
2024-07-01 | GSE240310 | GEO
Project description:Heart failure (HF) is a leading cause of morbidity and mortality. As adult cardiomyocytes (CMs) have little regenerative capacity, after myocardial infarction (MI), resident cardiac fibroblasts (CFs) synthesize extracellular matrix to form scar tissues, resulting in myocardial remodeling and HF. Thus, both cardiac regeneration and fibrosis are therapeutic targets for chronic MI. We previously reported that fibroblasts were directly reprogrammed into induced CMs (iCMs) by overexpression of cardiogenic transcription factors in vitro and in vivo in acute MI. Here we show that in vivo cardiac reprogramming generated iCMs from resident CFs, improved cardiac function, and reversed fibrosis in chronic MI using a novel transgenic mouse system. Single-cell transcriptome analysis revealed that cardiac reprogramming shifted matrix-producing CFs, matrifibrocytes, to a quiescent state and changed the interstitial cell landscape, suppressing fibrotic and inflammatory signatures and activating angiogenic program. Thus, in vivo cardiac reprogramming may be a promising approach for chronic HF.
2022-12-12 | GSE185265 | GEO
Project description:The importance of regenerative potential of cardiac stem/progenitor cells (CSCs) after acute myocardial infarction (AMI) has been emphasized in the last decade. Several studies have demonstrated that this cell population has a relevant role in myocardial repair, supported by the establishment of a paracrine cross-talk between CSCs and the injured tissue. However, the majority of current in vitro strategies to study these cells fails to include important modulators of CSC activity, such as the paracrine effect of cardiomyocytes (CMs) and the physicochemical changes occurring in tissue during Ischemia/Reperfusion (I/R) injury. In this work, we established the first human in vitro heterotypic model of myocardial I/R injury with human CSCs (hCSCs) and human induced pluripotent cell-derived cardiomyocytes (hiPSC-CMs) using transwell inserts. hCSCs response to I/R was characterized using advanced whole proteomic mass spectrometry-based tools that allowed us to propose new pathways in hCSCs regenerative process, including: cell cycle regulation inhibition, proliferation through EGF signaling, gluthathione-mediated reactive oxygen species detoxification, and signaling through several paracrine growth factors. The model established in this work contributes with new insights regarding hCSC biology in response to AMI and provides an important tool to study and modulate molecular mechanisms involved in the regenerative potential of CSCs.
2019-02-18 | PXD008156 | Pride
Project description:Adult cardiomyocytes (CM) are terminally differentiated cells with minimal regenerative capacity, making cardiac tissue particularly vulnerable to injury. Thus, defining the roadblocks responsible for adult CM cell cycle arrest lies at the core of developing therapies to regenerate myocyte loss following injurious events such as myocardial infarction. We have previously shown that inactivating the p53/Mdm2 tumor suppressor circuitry, specifically in the heart (using the Cre-loxP recombination system of bacteriophage P1), can allow differentiated CMs to regain proliferative capacity, through an upregulation of factors involved in cell cycle re-entry. These factors are repressed in quiescent CMs, in part through the action of microRNAs (miRNAs). Notably, knockout of either p53 or Mdm2 individually was insufficient to promote CM proliferation. Therefore, we hypothesized that inactivation of p53/Mdm2-regulated miRNAs could promote the expression of cell cycle activators and induce proliferation of adult murine CMs. To identify miRNAs regulated by both p53 and Mdm2, total miRNA expression profiles from cardiac specific p53/Mdm2 double knockout (DKO) mouse hearts were compared with those from cardiac-specific single knockouts (p53KO and Mdm2KO), and vehicle-injected controls using the Nanostring nCounter mouse miRNA expression assay. This revealed a profile of 11 significantly downregulated miRNAs in the proliferative DKO hearts (versus vehicle-injected control), that were enriched for mRNA targets involved in cell cycle regulation. In vitro studies have demonstrated that knockdown of these 11 miRNAs in neonatal rat cardiomyocytes can increase the occurrence of cytokinetic events. Ultimately, we aim to inject antagomirs targeting these miRNAs into animals post-myocardial infarction to determine the effect of p53/Mdm2-regulated miRNAs on heart function and CM proliferation in vivo.
2017-03-22 | E-MTAB-5531 | biostudies-arrayexpress
Project description:<p>Isoproterenol (ISO) provides a simple and non-invasive method for inducing myocardial injury with lower mortality and higher reproducibility. Phlegm-damp syndrome, as known as “Tanshi” in Chinese, is one of Traditional Chinese Medicine (TCM) syndrome differentiation, which plays an important role in the development of cardiovascular diseases. However, the underlying mechanism remains unknown. In our present study, a myocardial injury mouse model was introduced by ISO administration combined with high temperature and high humidity and high fat diet to simulate phlegm-damp syndrome. Nontargeted metabolomics with LC-MS/MS was adopted to reveal serum metabolism profile for elucidating the possible molecular mechanism.</p>
2022-01-10 | MTBLS3886 | MetaboLights
Project description:Background: As a biological pump, the heart needs to consume a substantial amount of energy to maintain sustained beating. Myocardial energy metabolism was recently reported to be related to the loss of proliferative capacity in cardiomyocytes (CMs). However, the intrinsic relationship between beating rate and proliferation in CMs and whether energy metabolism can regulate this relationship is not known. In this study, we found that limited heart rate reserve (HRR) induced CM proliferation under physiological conditions and promoted cardiac regenerative repair after myocardial injury. However, the role of HRR in regulating CM proliferation and damaged heart repair has not been explored. Results: We found that the control and isoproterenol groups had more similar transcriptional profiles that clearly differed from those of the five groups treated with each anti-arrhythmic drug and thus were clustered together. With Gene Ontology (GO) analysis, we found that genes that commonly showed upregulated expression in various HRR drug-treated cells were related to proliferation and metabolic regulation, including the cell cycle process, heart process, and nucleoside triphosphate metabolic process, with a particular upregulation of the expression of glucose metabolic genes.
2022-10-23 | GSE186797 | GEO