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FNDC4 alleviates cardiac ischemia/reperfusion injury through facilitating HIF1α-dependent cardiomyocyte survival and angiogenesis in male mice

ABSTRACT: FNDC4 alleviates cardiac ischemia/reperfusion injury through facilitating HIF1α-dependent cardiomyocyte survival and angiogenesis in male mice

PROVIDER: PRJNA1163681 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR30757774_1.fastq.gz	Fastqsanger.gz
	SRR30757774_2.fastq.gz	Fastqsanger.gz
	SRR30757775_1.fastq.gz	Fastqsanger.gz
	SRR30757775_2.fastq.gz	Fastqsanger.gz
	SRR30757776_1.fastq.gz	Fastqsanger.gz

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FNDC4 alleviates cardiac ischemia/reperfusion injury through facilitating HIF1α-dependent cardiomyocyte survival and angiogenesis in male mice

Project description:Fibronectin type III domain-containing (FNDC) proteins play critical roles in cellular homeostasis and cardiac injury, and our recent findings define FNDC5 as a promising cardioprotectant against doxorubicin- and aging-related cardiac injury. FNDC4 displays a high homology with FNDC5; however, its role and mechanism in cardiac ischemia/reperfusion (I/R) injury remain elusive. Here, we show that cardiac and plasma FNDC4 levels are elevated during I/R injury in a hypoxia-inducible factor 1α (HIF1α)-dependent manner. Cardiac-specific FNDC4 overexpression facilitates, while cardiac-specific FNDC4 knockdown inhibits cardiomyocyte survival and angiogenesis in I/R-stressed hearts of male mice through regulating the proteasomal degradation of HIF1α. Interestingly, FNDC4 does not directly stimulate angiogenesis of endothelial cells, but increases the expression and secretion of fibroblast growth factor 1 (FGF1) from cardiomyocytes to enhance angiogenesis in a paracrine manner. Moreover, therapeutic administration of recombinant FNDC4 protein is sufficient to alleviate cardiac I/R injury in male mice, without resulting in significant side effects. In this work, we reveal that FNDC4 alleviates cardiac I/R injury through facilitating HIF1α-dependent cardiomyocyte survival and angiogenesis, and define FNDC4 as a promising predictive and therapeutic target of cardiac I/R injury.

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Vitamin B12 alleviates myocardial ischemia/reperfusion injury

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Acid sphingomyelinase deactivation post-ischemia/ reperfusion promotes cerebral angiogenesis and brain remodeling via small extracellular vesiclesAcid sphingomyelinase deactivation post-ischemia/ reperfusion promotes cerebral angiogenesis and brain remodeling via small extracellular vesicles

Project description:Acid sphingomyelinase (ASM) inhibitors, which are clinically used as anti-depressants for ~60 years, have recently been shown to enhance stroke recovery in rodents. Using mice and cerebral microvascular endothelial cells exposed to ischemia/reperfusion (I/R) we show that the antidepressants amitriptyline, fluoxetine and desipramine induce angiogenesis in an ASM-dependent way by releasing small extracellular vesicles (sEVs) from endothelial cells, which have bona fide characteristics of exosomes and which, similar to sEVs released during I/R, promote angiogenesis. Post-I/R, ASM inhibition elicits a profound brain remodeling response with increased blood-brain barrier integrity, reduced brain leukocyte infiltrates and increased neuronal survival. The ASM inhibitor-mediated release of sEVs has disclosed an elegant target, via which stroke recovery can be amplified. Key words: Antidepressant, ceramide, exosome, focal cerebral ischemia, middle cerebral artery occlusion, sphingomyelin, stroke recovery

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KLF6 alleviates hepatic ischemia-reperfusion injury by inhibiting autophagy

Project description:To find the genes with significant expression changes after liver ischemia-reperfusion injury,we established a hypoxia-reoxygenation model using AML12 cells. We then performed gene expression profiling analysis using data obtained from RNA-seq under normoxia and hypoxia-reoxygenation conditions.

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Vitamin B12 alleviates myocardial ischemia/reperfusion injury

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KLF6 alleviates hepatic ischemia-reperfusion injury by inhibiting autophagy

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Transcriptional changes during hepatic ischemia-reperfusion in the rat

Project description:Ischemia-reperfusion (IR) injury, a ubiquitous consequence of liver transplantation, is a cause of early graft rejection and increased morbidity. At present, there are no effective strategies to reduce hepatic IR injury. Molecular mechanisms that promote cell survival under these circumstances are largely undefined. We examined changes in global gene expression at early reperfusion times to identify potential IR-mediated protective responses. Using a rat model of 30 minutes of 70% warm ischemia followed by reperfusion, RNA for microarray analysis was extracted from the non-ischemic and the ischemic-reperfused lobes at four reperfusion times: 0 (no reperfusion), 0.5, 2, and 6 hours. Differentially expressed genes and pathway analyses were used to identify IR-induced events. The transcriptome of the reperfused lobes was unique and discrete at each reperfusion time, showing no evidence of sustained changes of the gene expression alterations seen at 30 minutes of reperfusion. At all reperfusion times, a significant portion of gene expression changes in the reperfused lobes were present in the non-ischemic lobes. However, the earliest reperfusion time, 30 minutes, showed a marked increase in the expression of a set of immediate-early genes (c-Fos, c-Jun, Atf3, Egr1) that was exclusive to the reperfused lobe. Similarities of gene expression changes in the reperfused and the non-ischemic lobes at each time suggest that hemodynamics and/or circulating factors are potent stimuli in an IR model. However, early reperfusion events appear to reflect a cell-autonomous response that may be protective, thereby representing potential targets to ameliorate IR injury.

2019-12-16 | GSE117915 | GEO

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Project description:Clear cell renal cell carcinoma (ccRCC), the most common type of renal cancer is often associated with inactivation of the tumor suppressor gene von-Hippel Lindau (VHL), leading to stable expression of hypoxia inducible factors, HIF1α and HIF2α. Although HIF1α functions as a tumor suppressor gene, majority of ccRCCs constitutively express HIF1α, stratifying VHL-deficient ccRCCs into groups which express either both HIF1α and HIF2α (H1H2) or HIF2α exclusively (H2). MicroRNA (miRNA) profiling performed in these two ccRCC subtypes to identify novel molecular mechanisms. ccRCCs were classified into H1H2 and H2 subtypes by immunohostochemical staining of H1F1α and H1F2α expression. Five H1H2 tumor samples and eight H2 tumor samples were used for the study. Matched adjacent normal renal tissues were used as respective controls.

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Identification of interacting proteins of lncRNA HIF1α-AS1

Project description:LncRNA Hypoxia-inducible factor 1α-antisense 1 (HIF1α-AS1) is located on the antisense strand of the important Hypoxia-inducible factor 1α (HIF1α) gene, but being transcribed in antisense direction along the HIF1α promoter. Here we used the 3’end biotinylated HIF1a-AS1 RNA and a control RNA for RNA Pulldown and searched for interacting proteins in nuclear extracts of human umbilical vein endothelial cells (HUVEC).

2022-09-23 | PXD023512 | Pride

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