Single nucleus RNA-seq of cardiomyocytes from neonatal mouse hearts after injury
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA541000 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR9007780.fastq.gz | Fastqsanger.gz | |||
| SRR9007790.fastq.gz | Fastqsanger.gz | |||
| SRR9007800.fastq.gz | Fastqsanger.gz | |||
| SRR9007810.fastq.gz | Fastqsanger.gz | |||
| SRR9007820.fastq.gz | Fastqsanger.gz |
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Project description:The adult mammalian heart is incapable of regeneration following injury. In contrast, the neonatal mouse heart can efficiently regenerate during the first week of life. The molecular mechanisms that mediate the regenerative response and its blockade in later life are not understood. Here, by single-nucleus RNA sequencing, we map the dynamic transcriptional landscape of five distinct cardiomyocyte populations in healthy, injured and regenerating mouse hearts. We identify immature cardiomyocytes that enter the cell-cycle following injury and disappear as the heart loses the ability to regenerate. These proliferative neonatal cardiomyocytes display a unique transcriptional program dependent on NFYa and NFE2L1 transcription factors, which exert proliferative and protective functions, respectively. Cardiac overexpression of these two factors conferred protection against ischemic injury in mature mouse hearts that were otherwise non-regenerative. These findings advance our understanding of the cellular basis of neonatal heart regeneration and reveal a transcriptional landscape for heart repair following injury.
2020-03-18 | GSE130699 | GEO
Project description:The adult mammalian heart is incapable of regeneration following injury. In contrast, the neonatal mouse heart has a transient ability to regenerate, however the molecular mechanism that mediates this regenerative response is not fully understood. Here, by single-nucleus RNA sequencing we map the transcriptome landscape of cardiomyocytes in neonatal mouse hearts at healthy, regenerative, and remodeling conditions. We show that an immature cardiomyocyte population enters cell-cycle in response to injury. Absence of this cardiomyocyte population overtime is associated with the loss of the ability of the heart to regenerate. We show a defined injury response in these cardiomyocytes, including activation of transcription factors NFYa and NFE2L1, which play proliferative and protective roles, respectively. We further show that overexpression of these two factors in vivo promotes heart regeneration. Thus, these findings refined our understanding of cellular basis of neonatal heart regeneration and reveal dynamic transcriptome landscape of cardiomyocytes in response to injury.
2020-03-18 | GSE142365 | GEO
Project description:Single cell ATAC-seq of cardiomyocytes from neonatal mouse hearts after injury
| PRJNA596869 | ENA
Project description:The adult mammalian heart is incapable of regeneration following injury. In contrast, the neonatal mouse heart has a transient ability to regenerate, however the molecular mechanism that mediates this regenerative response is not fully understood. Here, by single-nucleus RNA sequencing we map the transcriptome landscape of cardiomyocytes in neonatal mouse hearts at healthy, regenerative, and remodeling conditions. We show that an immature cardiomyocyte population enters cell-cycle in response to injury. Absence of this cardiomyocyte population overtime is associated with the loss of the ability of the heart to regenerate. We show a defined injury response in these cardiomyocytes, including activation of transcription factors NFYa and NFE2L1, which play proliferative and protective roles, respectively. We further show that overexpression of these two factors in vivo promotes heart regeneration. Thus, these findings refined our understanding of cellular basis of neonatal heart regeneration and reveal dynamic transcriptome landscape of cardiomyocytes in response to injury.
2020-03-18 | GSE142364 | GEO
Project description:Adult mammalian hearts do not regenerate following ischemic injury, causing permanent damage to the myocardium, often leading to heart failure. In contrast, neonatal mouse hearts can fully regenerate after injury, however this ability is lost shortly after birth. Loss of regenerative capacity coincides with profound changes in the epigenetic landscape. Yet, the mechanisms controlling cardiomyocyte proliferation remain poorly understood. To identify epigenetic mechanisms that underlie cardiomyocyte regeneration in response to ischemic injury, we subjected mice to sham or ischemia-reperfusion injury (IR) and performed RNA-Seq at multiple timepoints after injury. Multiple SWI/SNF chromatin remodeling complex subunits were upregulated after IR, including the AT-rich interactive domain-containing protein 1A (Arid1a), which has previously been implicated in tissue regeneration. Here, we show that Arid1a is abundantly expressed in cardiomyocytes during development, and is reactivated in a subset of adult cardiomyocytes after IR. Moreover, ARID1A is highly expressed in cardiomyocytes in human failing hearts, suggesting an important function in injury response. Cardiomyocyte-specific Arid1a ablation in neonatal mice induced cardiomyocyte hyperplasia, and severe cardiac enlargement at 2 weeks of age. Arid1a mutant hearts display increased expression of key cell cycle genes. Using ChIP-Seq and protein interaction studies we show that Arid1a functionally interacts with HIPPO signaling, thereby regulating neonatal cardiomyocyte proliferation. Furthermore, suppression of Arid1a in adult cardiomyocytes after IR induced cell cycle activity in border zone cardiomyocytes. These data suggest that Arid1a regulates cardiomyocyte proliferation and function. Upregulation of Arid1a in cardiomyocytes after injury may suppress proliferation and regeneration. Modulation of ARID1A after ischemic injury may be a novel therapeutic target to enhance cardiac regeneration.
2023-07-06 | GSE155101 | GEO
Project description:Adult mammalian hearts do not regenerate following ischemic injury, causing permanent damage to the myocardium, often leading to heart failure. In contrast, neonatal mouse hearts can fully regenerate after injury, however this ability is lost shortly after birth. Loss of regenerative capacity coincides with profound changes in the epigenetic landscape. Yet, the mechanisms controlling cardiomyocyte proliferation remain poorly understood. To identify epigenetic mechanisms that underlie cardiomyocyte regeneration in response to ischemic injury, we subjected mice to sham or ischemia-reperfusion injury (IR) and performed RNA-Seq at multiple timepoints after injury. Multiple SWI/SNF chromatin remodeling complex subunits were upregulated after IR, including the AT-rich interactive domain-containing protein 1A (Arid1a), which has previously been implicated in tissue regeneration. Here, we show that Arid1a is abundantly expressed in cardiomyocytes during development, and is reactivated in a subset of adult cardiomyocytes after IR. Moreover, ARID1A is highly expressed in cardiomyocytes in human failing hearts, suggesting an important function in injury response. Cardiomyocyte-specific Arid1a ablation in neonatal mice induced cardiomyocyte hyperplasia, and severe cardiac enlargement at 2 weeks of age. Arid1a mutant hearts display increased expression of key cell cycle genes. Using ChIP-Seq and protein interaction studies we show that Arid1a functionally interacts with HIPPO signaling, thereby regulating neonatal cardiomyocyte proliferation. Furthermore, suppression of Arid1a in adult cardiomyocytes after IR induced cell cycle activity in border zone cardiomyocytes. These data suggest that Arid1a regulates cardiomyocyte proliferation and function. Upregulation of Arid1a in cardiomyocytes after injury may suppress proliferation and regeneration. Modulation of ARID1A after ischemic injury may be a novel therapeutic target to enhance cardiac regeneration.
2023-07-06 | GSE155100 | GEO
Project description:This is the dataset used in the paper: Zhang et al. Identifying the Key Regulators that Promote Cell-cycle Activity in the Hearts of Early Neonatal Pigs after Myocardial Injury. PloS One.
2020-02-07 | GSE144883 | GEO
Project description:The heart of a newborn mouse has an exceptional capacity to regenerate from myocardial injury but lose it after a week of life, which has been utilized as a valuable model to explore the cues for heart regeneration. More and more researches indicated that glycoprotein played an important role in cardiac regeneration. Elucidating the glycosylation processes associated with heart regeneration will be beneficial for the molecular mechanism studies of heart regeneration as well as discovery of potential therapeutic strategies for human cardiac diseases. In this work, an integrated glycoproteomic and proteomic analysis were performed to investigate the differences in glycoprotein abundances and site-specific glycosylation occupancy between neonatal day 1 (P1) and day 7 (P7) of mouse hearts. The intact glycoepeptides were enriched and identified in both P1 and P7 hearts. To screen for differentially regulated glycoproteins, we compared the expression levels of intact glycopeptides between P1 and P7 hearts using label free quantification. Eventually, the glycosylation occupancy of site-specific N-glycans were obtained by comparing the alterations of intact glycopeptides with their corresponding protein expression levels obtained from global proteomic analysis. These altered glycosylation patterns among proteins between P1 and P7 mouse hearts have a significant potential to aid our understanding of the regenerative capacity loss in neonatal mouse hearts during the first week, thus leading to novel therapeutic approaches to recover the capacity.
2020-05-26 | PXD017139 | Pride
Project description:Expression profiles of microRNAs in neonatal (isolated from day0 newborn rats) and adult rat cardiomyocytes (isolated from 2month old rats) Two condition experiment; Biological replicates: 7 samples of cardiomyocytes from neonatal rats (from independent isolations); 6 samples of cardiomyocytes isolated from adult animals (from independent isolations)
2012-10-13 | E-GEOD-41537 | biostudies-arrayexpress
Project description:We addressed the question of which protein kinases are expressed in cardiomyocytes. We assessed the changes during postnatal development, comparing profiles in rat neonatal ventricular cardiomyocytes (NVMs) with adult ventricular cardiomyocytes (AVMs). Neonatal and adult rat ventricular cardiomyocytes prepared according to established procedures (Marshall et al. PLoS ONE 2010 5(4):e10027; Fuller and Sugden, FEBs Lett. 1989 247:209-12; Rodrigues and Severson In Biochemical Techniques in the Heart (McNeill, J. H., Ed.) pp 101-115, CRC Press, New York.). mRNA expression profiles compared using Affymetrix rat genome 230 2.0 arrays.
2015-01-01 | E-MTAB-2832 | biostudies-arrayexpress