Transcriptomic profiles reveal differences between the right and left ventricle (RV and LV) in both normoxia and hypoxia
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ABSTRACT:
PROVIDER: PRJNA551403 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR9606550.fastq.gz | Fastqsanger.gz | |||
| SRR9606560.fastq.gz | Fastqsanger.gz | |||
| SRR9606551.fastq.gz | Fastqsanger.gz | |||
| SRR9606561.fastq.gz | Fastqsanger.gz | |||
| SRR9606552.fastq.gz | Fastqsanger.gz |
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Project description:Background: Right ventricular (RV) and left ventricular (LV) myocardium differ in their response to pressure-overload hypertrophy (POH). In this report we use microarray and proteomic analyses to identify pathways modulated by LV-, and RV-POH in the immature heart. Methods: Newborn New Zealand White rabbits underwent banding of the descending thoracic aorta (LV-POH; n=6). RV-POH was achieved by banding the pulmonary artery (n=6). Sham–control animals (SC; n=6 each) were sham-manipulated. Following 4 (LV-POH) and 6 weeks (RV-POH) recovery, the hearts were removed and matched sample RNA and proteins were isolated for microarray and proteomic analysis. Results: There was no difference in body weight in RV-, LV-POH vs. SC but there was a significant increase vs. SC in RV (3.2±0.8g vs. 1.2±0.3g; P<0.01) and LV weight (7.08±0.6g vs. 4.02±0.2g; P<0.01). Fractional area change (RV-POH) and shortening fraction (LV-POH) decreased significantly (23±6 vs. 47±6 and 21±4 vs.44±2, respectively, P<0.01). Microarray analysis demonstrated that LV-POH enriched pathways for oxidative phosphorylation, mitochondria energy pathways, actin, ILK, hypoxia, calcium and protein kinase-A signalling. RV-POH enriched pathways for cardiac oxidative phosphorylation. Proteomic analysis revealed 19 proteins were uniquely expressed in LV-POH vs. SC. Functional annotation clustering analysis indicated significant enrichment for the mitochondrion, cellular macromolecular complex assembly and oxidative phosphorylation. RV-POH had 15 uniquely expressed proteins vs. SC. Functional annotation clustering analysis indicated significant enrichment in structural constituents of muscle, cardiac muscle tissue development and calcium handling. Conclusion: Our results identify unique transcript and protein expression profiles in LV, RV-POH and provide new insight into the biological basis of ventricular specific hypertrophy. 3 different conditions: PAB-RV vs. Sham-control RV, PAB-RV [test] vs. PAB-LV [control], AOB-LV vs. Sham-control LV.
2011-06-24 | E-GEOD-30194 | biostudies-arrayexpress
Project description:Background: Right ventricular (RV) and left ventricular (LV) myocardium differ in their response to pressure-overload hypertrophy (POH). In this report we use microarray and proteomic analyses to identify pathways modulated by LV-, and RV-POH in the immature heart. Methods: Newborn New Zealand White rabbits underwent banding of the descending thoracic aorta (LV-POH; n=6). RV-POH was achieved by banding the pulmonary artery (n=6). Sham–control animals (SC; n=6 each) were sham-manipulated. Following 4 (LV-POH) and 6 weeks (RV-POH) recovery, the hearts were removed and matched sample RNA and proteins were isolated for microarray and proteomic analysis. Results: There was no difference in body weight in RV-, LV-POH vs. SC but there was a significant increase vs. SC in RV (3.2±0.8g vs. 1.2±0.3g; P<0.01) and LV weight (7.08±0.6g vs. 4.02±0.2g; P<0.01). Fractional area change (RV-POH) and shortening fraction (LV-POH) decreased significantly (23±6 vs. 47±6 and 21±4 vs.44±2, respectively, P<0.01). Microarray analysis demonstrated that LV-POH enriched pathways for oxidative phosphorylation, mitochondria energy pathways, actin, ILK, hypoxia, calcium and protein kinase-A signalling. RV-POH enriched pathways for cardiac oxidative phosphorylation. Proteomic analysis revealed 19 proteins were uniquely expressed in LV-POH vs. SC. Functional annotation clustering analysis indicated significant enrichment for the mitochondrion, cellular macromolecular complex assembly and oxidative phosphorylation. RV-POH had 15 uniquely expressed proteins vs. SC. Functional annotation clustering analysis indicated significant enrichment in structural constituents of muscle, cardiac muscle tissue development and calcium handling. Conclusion: Our results identify unique transcript and protein expression profiles in LV, RV-POH and provide new insight into the biological basis of ventricular specific hypertrophy.
2011-06-24 | GSE30194 | GEO
Project description:We performed RNA-seq to analyze gene expression in rat cardiac tissue from the left and right ventricle for animals in a) normoxia and b) exposed to hypoxia (10% O2) for 2 weeks
2020-02-03 | GSE133402 | GEO
Project description:The right ventricle (RV) differs in several aspects from the left ventricle (LV) including its embryonic origin, physiological role and anatomical design. In contrast to LV hypertrophy, little is known about the molecular circuits, which are activated upon RV hypertrophy (RVH). We established a highly reproducible model of RVH in mice using pulmonary artery clipping (PAC), which avoids detrimental RV pressure overload and thus allows long-term survival of operated mice. Magnetic resonance imaging revealed pathognomonic changes with striking similarities to human congenital heart disease- or pulmonary arterial hypertension- patients. Comparative, microarray based transcriptome analysis of right- and left-ventricular remodeling identified distinct transcriptional responses to pressure-induced hypertrophy of either ventricle, which were mainly characterized by stronger transcriptional responses of the RV compared to the LV myocardium. Hierarchic cluster analysis revealed a RV- and LV-specific pattern of gene activity after induction of hypertrophy, however, we did not find evidence for qualitatively distinct regulatory pathways in RV compared to LV. Data mining of nearly three thousand RV-enriched genes under PAC disclosed novel potential (co)-regulators of long-term RV remodeling and hypertrophy. We reason that specific inhibitory mechanisms in RV restrict excessive myocardial hypertrophy and thereby contribute to its vulnerability to pressure overload. Alternative splicing and gene expression analysis during development of the heart and cardiomyoyte differentiation.
2011-07-07 | E-GEOD-30428 | biostudies-arrayexpress
Project description:Cardiac fibrosis is a key aspect of heart failure, leading to reduced ventricular compliance and impaired electrical conduction in the myocardium. Various pathophysiologic conditions can lead to fibrosis in the left ventricle (LV) and/or right ventricle (RV). Despite growing evidence to support the transcriptomic heterogeneity of cardiac fibroblasts (CFs) in healthy and diseased states, there have been no direct comparisons of CFs in the LV and RV. Given the distinct natures of the ventricles, we hypothesized that LV and RV-derived CFs would display baseline transcriptomic differences that influence their proliferation and differentiation following injury. Bulk RNA sequencing of CFs isolated from healthy left and right cardiac ventricles indicated that left ventricle-derived CFs may be further along the myofibroblast transdifferentiation trajectory than cells isolated from the right ventricle. Single-cell RNA-sequencing (scRNA-seq) analysis of the two populations confirmed that Postn+ CFs are more enriched in the LV, whereas Igfbp3+ CFs were enriched in the RV at baseline. Notably, following pressure overload injury, the LV developed a larger subpopulation of pro-fibrotic Thbs4+/Cthrc1+ injury-induced CFs, while the RV showed unique expansion of two less-well characterized subpopulations of CFs (Igfbp3+ and Inmt+). These findings demonstrate that LV and RV-derived CFs display baseline subpopulation differences that may dictate their diverging responses to pressure overload injury. Further study of these subpopulations will elucidate their role in the development of fibrosis and inform whether LV and RV fibrosis require distinct treatments.
2024-02-28 | GSE254914 | GEO
Project description:Cardiac fibrosis is a key aspect of heart failure, leading to reduced ventricular compliance and impaired electrical conduction in the myocardium. Various pathophysiologic conditions can lead to fibrosis in the left ventricle (LV) and/or right ventricle (RV). Despite growing evidence to support the transcriptomic heterogeneity of cardiac fibroblasts (CFs) in healthy and diseased states, there have been no direct comparisons of CFs in the LV and RV. Given the distinct natures of the ventricles, we hypothesized that LV and RV-derived CFs would display baseline transcriptomic differences that influence their proliferation and differentiation following injury. Bulk RNA sequencing of CFs isolated from healthy left and right cardiac ventricles indicated that left ventricle-derived CFs may be further along the myofibroblast transdifferentiation trajectory than cells isolated from the right ventricle. Single-cell RNA-sequencing (scRNA-seq) analysis of the two populations confirmed that Postn+ CFs are more enriched in the LV, whereas Igfbp3+ CFs were enriched in the RV at baseline. Notably, following pressure overload injury, the LV developed a larger subpopulation of pro-fibrotic Thbs4+/Cthrc1+ injury-induced CFs, while the RV showed unique expansion of two less-well characterized subpopulations of CFs (Igfbp3+ and Inmt+). These findings demonstrate that LV and RV-derived CFs display baseline subpopulation differences that may dictate their diverging responses to pressure overload injury. Further study of these subpopulations will elucidate their role in the development of fibrosis and inform whether LV and RV fibrosis require distinct treatments.
2024-02-28 | GSE255542 | GEO
Project description:Identification of genome-wide PRDM16 binding sites in E13.5 whole mouse heart, as well as in isolated left ventricle (LV) and right ventricle (RV).
2021-12-20 | GSE179371 | GEO
Project description:The right ventricle (RV) differs in several aspects from the left ventricle (LV) including its embryonic origin, physiological role and anatomical design. In contrast to LV hypertrophy, little is known about the molecular circuits, which are activated upon RV hypertrophy (RVH). We established a highly reproducible model of RVH in mice using pulmonary artery clipping (PAC), which avoids detrimental RV pressure overload and thus allows long-term survival of operated mice. Magnetic resonance imaging revealed pathognomonic changes with striking similarities to human congenital heart disease- or pulmonary arterial hypertension- patients. Comparative, microarray based transcriptome analysis of right- and left-ventricular remodeling identified distinct transcriptional responses to pressure-induced hypertrophy of either ventricle, which were mainly characterized by stronger transcriptional responses of the RV compared to the LV myocardium. Hierarchic cluster analysis revealed a RV- and LV-specific pattern of gene activity after induction of hypertrophy, however, we did not find evidence for qualitatively distinct regulatory pathways in RV compared to LV. Data mining of nearly three thousand RV-enriched genes under PAC disclosed novel potential (co)-regulators of long-term RV remodeling and hypertrophy. We reason that specific inhibitory mechanisms in RV restrict excessive myocardial hypertrophy and thereby contribute to its vulnerability to pressure overload.
2011-07-07 | GSE30428 | GEO
Project description:Aims. We sought to analyze the physiological differences of human C-MSC between the left ventricle (LV) versus the right ventricle (RV) . Methods and results. Autoptic cardiac specimens from LV and RV were obtained from healthy donors. Part was used for tissue sections; part was processed to obtain C-MSC. Isogenic LV and RV C-MSC were compared as for surface markers expression, cell proliferation/death ratio, differentiation capabilities and transcriptomics. Our results indicated a greater presence of C-MSC in RV vs. LV total tissue. Moreover, more cells can be obtained from RV than from LV after isolation procedures. LV and RV C-MSC are characterized by the expression of the same surface markers. Functional studies revealed RV-LV C-MSC comparable groth curves but higher apoptosis rate within the LV cells. Moreover, higher propensity of the RV to to collagen deposition was obseved. Transcriptome analysis confirmed differences in the expression of genes related to apoptosis regulation and extracellular matrix organization. Alongside, we unveiled further pathways specifically associated to LV or RV C-MSC. Conclusions. These results contribute to understand the role of RV and LV C-MSC in physiological condition. Moreover, the obtained information can unravel their differential contribution to RV or LV- specific pathologic scenarios. RNA-Seq allowed identifying novel differentially expressed genes in RV vs. LV cells, which might uncover unappreciated mechanisms underlying ventricle-specific C-MSC regulation.
2020-05-01 | GSE142205 | GEO
Project description:This research aimed to identify protein biomarkers of right ventricular dysfunction in patients with advanced heart failure with reduced ejection fraction (HFrEF). Samples of myocardium from both, right and left ventricles (RV, LV) were obtained from 10 HFrEF patients with right ventricular dysfunction (RVD), 10 HFrEF patients without RVD (noRVD) undergoing heart transplantation, and 10 non-failing unused donor hearts (Control). Tissue samples were homogenized and extracted using mild Triton X-100 detergent and processed by SP3 extraction to remove the detergent prior the analysis, (LFQ) proteomic analysis identified a total of 4 032 proteins in the left ventricle and 3 788 proteins in the right ventricle.
2025-02-11 | PXD043768 | Pride