Cardiac fibrosis remains an unresolved problem in heart disease. Its etiology is directly caused by the activation and proliferation of cardiac fibroblasts (CFs). However, there is limited information regarding the biological role of cardiac fibroblasts in cardiac fibrosis.
View Article and Find Full Text PDFCardiac fibroblasts (CFs) drive extracellular matrix remodeling after inflammatory injury, leading to cardiac fibrosis and diastolic dysfunction. Recent studies described the role of epigenetics in cardiac fibrosis. Nevertheless, detailed reports on epigenetics regulating CFs pyroptosis and describing their implication in cardiac fibrosis are still unclear.
View Article and Find Full Text PDFCardiovasc Toxicol
December 2021
Novel insights into epigenetic control of cardiac fibrosis are now emerging. Cardiac fibroblasts (CFs) activation into myofibroblasts and the production of extracellular matrix (ECM) is the key to cardiac fibrosis development, but the specific mechanism is not fully understood. In the present study, we found that DNMT1 hypermethylation reduces the expression of microRNA-152-3p (miR-152-3p) and promotes Wnt1/β-catenin signaling pathway leading to CFs proliferation and activation.
View Article and Find Full Text PDFAims/hypothesis: MicroRNA-21 has been implicated in diabetic complication, including diabetic cardiomyopathy. However, there is limited information regarding the biological role of the miR-21 passenger strand (miR-21-3p) in diabetic cardiac fibrosis. The aim of this study was to investigate the role of miR-21-3p and its target androgen receptor in STZ-induced diabetic cardiac fibrosis.
View Article and Find Full Text PDFCell death and inflammation play critical roles in cardiac fibrosis. During the fibrosis process, inflammation and tissue injury were triggered; however, the mechanisms initiating cardiac fibrosis and driving fibroblast pyroptosis remained largely unknown. In this study, we identified long non-coding RNA (LncRNA)-GAS5 as the key onset of cardiac fibroblast pyroptosis and cardiac fibrosis.
View Article and Find Full Text PDFObjective: This study aims to investigate the effect of miR-29a targeting the regulation of DNMT3A on the development of cardiac fibrosis in Sprague-Dawley (SD) rats.
Methods: In vivo experiment: SD rats were randomly divided into model and control groups. The cardiac and left ventricular indices in each group were calculated.
Modulation of epigenetic marks has promised efficacy for treating fibrosis. Cardiac fibroblast is the primary source of activated myofibroblasts that produce extracellular matrix (ECM) in cardiac fibrosis, but the mechanisms underlying this process are incompletely understood. Here we show that microRNA-369-5p (miR-369-5p) through DNMT3A hypermethylation and suppression of the Patched1 pathway leads to fibroblast proliferation in cardiac fibrosis.
View Article and Find Full Text PDFPurpose: Diabetic cardiomyopathy (DCM) is a serious cardiac complication of diabetes, which further lead to heartfailure. It is known that diabetes-induced cardiac fibrosis is a key pathogenic factor contributing topathological changes in DCM. However, pathogenetic mechanisms underlying diabetes cardiac fibrosis arestill elusive.
View Article and Find Full Text PDFAim And Objective: Regulation of microRNA gene expression by DNA methylation may represent a key mechanism to drive cardiac fibrosis progression. Cardiac fibroblast autophagy is the primary source of cardiac fibrosis, but the mechanisms underlying this process are incompletely understood. Here we found that DNMT3A suppression of the microRNA-200b (miR-200b) through pathway leads to cardiac fibroblast autophagy in cardiac fibrosis.
View Article and Find Full Text PDFCardiac fibrosis is defined as excess deposition of extracellular matrix (ECM), resulting in tissue scarring and organ dysfunction. In recent years, despite the underlying mechanisms of cardiac fibrosis are still unknown, numerous studies suggest that epigenetic regulation of cardiac fibrosis. Cardiac fibrosis is regulated by a myriad of factors that converge on the transcription of genes encoding extracellular matrix protein, a process the epigenetic machinery plays a pivotal role.
View Article and Find Full Text PDFThe aim of this study was to develop PEGylation liposomes formulations of erlotinib and evaluate their characteristics, stability, and release characteristics. The average particle sizes and entrapment efficiency of PEGylation erlotinib liposomes are 102.4±3.
View Article and Find Full Text PDFLong noncoding RNAs (LncRNAs) are aberrantly expressed in many diseases including cardiac fibrosis. LncRNA growth arrest-specific 5 (GAS5) is reported as a significant mediator in the control of cell proliferation and growth; however, the role and function in cardiac fibrosis remain unknown. In this study, we confirmed that GAS5 was lowly expressed in cardiac fibrosis tissues as well as activated cardiac fibroblast.
View Article and Find Full Text PDFBackground: microRNAs (miRs) have been reported to regulate cell biological functions. To explore the underlying mechanism of miR-21 involvement in patients with atrial fibrosis and atrial fibrillation (AF).
Methods: In total, 49 patients (24 AF, sinus rhythm 25) aged 33-68 years old, including heart valve replacement surgery and cardiac catheterisation.
Background: Folate deficiency is an independent risk factor for congenital heart disease (CHD); however, the maternal plasma folate level is paradoxically not a good diagnostic marker. Genome-wide surveys have identified variants of nonfolate metabolic genes associated with the plasma folate level, suggesting that these genetic polymorphisms are potential risk factors for CHD.
Methods: To examine the effects of folate concentration-related variations on CHD risk in the Han Chinese population, we performed 3 independent case-control studies including a total of 1489 patients with CHD and 1745 control subjects.
Down-regulation of DUSP5 has been shown to increase cell proliferation. DUSP5 expression is regulated through epigenetic events involving LncRNA H19 human choriocarcinoma cell line. However, the molecular mechanisms of H19 modulating the DUSP5 expression in cardiac fibrosis remain largely unknown.
View Article and Find Full Text PDFCardiac fibroblasts proliferation is the most important pathophysiological character of cardiac fibrosis while the underlying mechanisms are still incompletely known. MicroRNAs (miRNAs) regulate gene expression by binding to specific sites. Studies have been indicated that miRNA-29a play a key role in cardiac fibrosis.
View Article and Find Full Text PDFAim And Objective: Cardiac fibrosis is an important pathological feature of cardiac remodeling in heart diseases. Methyl-CpG-binding protein 2 (MeCP2) is a transcription inhibitor, and plays a key role in the fibrotic diseases. However, the precise role of MeCP2 in cardiac fibrosis remains unclear.
View Article and Find Full Text PDFCardiac fibrosis is an important pathological feature of cardiac remodeling in heart diseases. The molecular mechanisms of cardiac fibrosis are unknown. Genomic analyses estimated that many noncoding DNA regions generate noncoding RNAs (ncRNAs).
View Article and Find Full Text PDFObjective: Wnt signaling pathway significantly participates in cardiac fibrosis and CFs activation. Therefore, we reviewed current evidence on the new perspectives and biological association between Wnt signaling pathway and cardiac fibrosis.
Design And Methods: A PubMed database search was performed for studies of Wnt signaling pathway in cardiac fibrosis and CFs activation.
Lung cancer is the leading cause of cancer-related death worldwide with a 5-year survival rate of less than 15%, despite significant advances in both diagnostic and therapeutic approaches. Combined genomic and transcriptomic sequencing studies have identified numerous genetic driver mutations that are responsible for the development of lung cancer. Importantly, these approaches have also uncovered the widespread expression of "noncoding RNAs" including long noncoding RNAs (LncRNAs), which impact biologic responses through the regulation of mRNA transcription or translation.
View Article and Find Full Text PDFInt J Biol Macromol
January 2016
Cardiac fibrosis is a complex pathological process that includes the abnormal proliferation of cardiac fibroblasts and deposition of the extracellular matrix (ECM) proteins and collagens. Methyl-CpG-binding protein 2 (MeCP2) is a multifunctional nuclear protein, and plays a key role in the fibrotic diseases. However, the potential role of MeCP2 in cardiac fibrosis remains unclear.
View Article and Find Full Text PDFTrends Cardiovasc Med
May 2016
Atrial fibrillation (AF) is the most common sustained arrhythmia. AF is a complex disease that results from genetic and environmental factors and their interactions. In recent years, numerous studies have shown that epigenetic mechanisms significantly participate in AF pathogenesis.
View Article and Find Full Text PDFObjectives: Cardiac fibrosis is characterized by net accumulation of extracellular matrix proteins in the cardiac interstitium, and contributes to both systolic and diastolic dysfunction in many cardiac pathophysiologic conditions. HDAC6 is a transcriptional regulator of the histone deacetylase family, subfamily 2. Previous studies have shown that HDAC6 plays critical roles in transcription regulation and proliferation events.
View Article and Find Full Text PDFNucleotide-binding oligomerization domain-like receptor containing pyrin domain 3 (NLRP3) plays a key role in lung injury diseases regulation, and its expression is increased in lung injury diseases. NLRP3 may be a good therapeutic target for lung injury diseases. The molecular mechanisms of NLRP3 in lung injury diseases remain unclear.
View Article and Find Full Text PDFExpert Opin Ther Targets
May 2015
Introduction: Cardiac fibroblast activation is a pivotal cellular event in cardiac fibrosis. Numerous studies have indicated that epigenetic modifications control cardiac fibroblast activation. Greater knowledge of the role of epigenetic modifications could improve understanding of the cardiac fibrosis pathogenesis.
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