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ABSTRACT: o8G-miSeq of rat cardiomyocytes: starvation with PE

PROVIDER: PRJNA529721 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR8801595.fastq.gz	Fastqsanger.gz
	SRR8801596.fastq.gz	Fastqsanger.gz
	SRR8801597.fastq.gz	Fastqsanger.gz
	SRR8801598.fastq.gz	Fastqsanger.gz

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Project description:o8G-miSeq of rat cardiomyocytes: PE

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Hypertrophy induced KIF5B controls mitochondrial localization and function in neonatal rat cardiomyocytes

Project description:Cardiac hypertrophy is associated with growth and functional changes of cardiomyocytes,including mitochondrial alterations, but the latter are still poorly understood. Here we investigated mitochondrial function and dynamic localization in neonatal rat ventricular cardiomyocytes (NRVCs) stimulated with insulin like growth factor 1 (IGF1) or phenylephrine (PE), mimicking physiological and pathological hypertrophic responses,respectively. A decreased activity of the mitochondrial electron transport chain (ETC) (state 3) was observed in permeabilized NRVCs stimulated with PE, whereas this was improved in IGF1 stimulated NRVCs. In contrast, in intact NRVCs, mitochondrial oxygen consumption rate (OCR) was increased in PE stimulated NRVCs, but remained constant in IGF1 stimulated NRVCs. After stimulation with PE, mitochondria localized to the periphery of the cell. To study the differences in more detail, we performed gene array studies. IGF1 and PE stimulated NRVCs did not reveal major differences in gene expression of mitochondrial encoding proteins, but we identified a gene encoding amotor protein implicated in mitochondrial localization, kinesin family member 5b (Kif5b ), which was clearly elevated in PE stimulated NRVCs but not in IGF1 stimulated NRVCs. We confirmed that Kif5b gene and protein expression was elevated in animal models with pathological cardiac hypertrophy. Silencing of Kif5b reverted the peripheral mitochondrial localization in PE stimulated NRVCs and diminished PE induced increases in mitochondrial OCR, indicating that KIF5B dependent localization affects cellular responses to PE stimulated NRVCs. These results indicate that KIF5B contributes to mitochondrial localization and function in cardiomyocytes and may play a role in pathological hypertrophic responses in vivo.

2016-04-21 | GSE73896 | GEO

Project description:Small RNA-seq and o8G-miSeq of LIHC patients

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Project description:Small RNA-seq and o8G-miSeq of Hs683 cell line

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PTHRP/Adenylate cyclase promotes parietal whereas Wnt/β-catenin signaling promotes visceral endoderm differentiation of rat XEN cells.

Project description:In this study we showed that rat XEN cells grown in the presence of a GSK3 inhibitor exhibited enhanced formation of cell contacts and decreased motility. In contrast, treatment with forskolin induced the PE formation and epithelial-mesenchymal transition (EMT) in rat XEN cells. Using microarray and real-time PCR assays, we found that VE versus PE formation of rat XEN cells was correlated with change in expression levels of VE or PE marker genes. Similar to forskolin, EMT was prompted upon treatment of rat XEN cells with recombinant parathyroid hormone related peptide (PTHRP), an activator of the cAMP pathway in vivo. Taken together, our data suggest that rat XEN cells are PrE-like cells. The activation of Wnt pathway in rat XEN cells leads to the acquisition of VE characteristics, whereas the activation of the PTHRP/cAMP pathway leads to EMT and the formation of PE.

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