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Wei Z, Lu Y, Qian C, Li J. Circ_0079480 facilitates proliferation, migration and fibrosis of atrial fibroblasts in atrial fibrillation by sponing miR-338-3p to activate the THBS1/TGF-β1/Smad3 signaling. Int J Cardiol 2024:132486. [PMID: 39187069 DOI: 10.1016/j.ijcard.2024.132486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Revised: 07/22/2024] [Accepted: 08/23/2024] [Indexed: 08/28/2024]
Abstract
BACKGROUND Atrial fibrosis is associated with the pathogenesis of atrial fibrillation (AF). This study aims to discuss the function of circ_0079480 in atrial fibrosis and its underlying mechanism. METHODS In vitro and in vivo models of atrial fibrosis were established by using angiotensin II (Ang II) to treat human atrial fibroblasts (HAFs) and C57/B6J mice. qRT-PCR and western blot were used to examine the mRNA and protein expression levels. CCK-8, EdU, cell strach, and transwell assays were performed to determine the proliferation and migration of HAFs. Dual-luciferase reporter and RIP/RNA pull-down assays were explored to identify the interaction of miR-338-3p and circ_0079480/THBS1. HE and Masson's trichrome staining experiments were performed to analyze the histopathological change in mice atrial tissues. RESULTS Circ_0079480 expression was increased in AF patients' atrial tissues and Ang II-treated HAFs. Silencing circ_0079480 inhibited cell proliferation and migration and reduced fibrosis-associated gene expression in Ang II-treated HAFs. Circ_0079480 could target miR-338-3p to repress its expression. MiR-338-3p inhibitor blocked the inhibitory effects of circ_0079480 knockdown on HAFs proliferation, migration, and fibrosis. Thrombospondin-1 (THBS1) was confirmed as a downstream target of miR-338-3p, and circ_0079480 could sponge miR-338-3p to upregulate THBS1 expression. Moreover, silencing THBS1 suppressed Ang II-induced proliferation, migration, and fibrosis in HAFs. More importantly, depletion of circ_0079480 inactivated the THBS1/TGF-β1/Smad3 signaling by upregulating miR-338-3p. Mice experiments also confirmed the suppression of circ_0079480 knockdown on atrial fibrosis. CONCLUSION Circ_0079480 acts as a sponge of miR-338-3p to upregulate THBS1 expression and activate the TGF-β1/Smad3 signaling, finally promoting Ang II-induced atrial fibrosis.
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Affiliation(s)
- Zihan Wei
- Department of General Medicine, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China.
| | - Ying Lu
- Department of General Medicine, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Cheng Qian
- Department of General Medicine, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Jing Li
- Department of General Medicine, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
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Chen C, Chen X, Yang S, Li Q, Ren Z, Wang L, Jiang Y, Gu X, Liu F, Mu J, Liu L, Wang Y, Li J, Yu Y, Zhang J, Shen C. Association of THBS1 genetic variants and mRNA expression with the risks of ischemic stroke and long-term death after stroke. Front Aging Neurosci 2022; 14:1006473. [PMID: 36212039 PMCID: PMC9545898 DOI: 10.3389/fnagi.2022.1006473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 09/05/2022] [Indexed: 11/13/2022] Open
Abstract
Background Thrombospondin-1 (THBS1) derived from platelets and acted as a critical mediator of hemostasis promoting platelet activation in thrombus formation. The biological connection of genetic variants and mRNA expression of THBS1 with ischemic stroke (IS) warrants further validation with population-based evidence. Objective To evaluate the association of single nucleotide polymorphisms (SNPs) and mRNA expression of THBS1 with the risks of IS and long-term death after stroke. Methods A case-control study consisted of 4,584 IS patients recruited from five hospitals in Jiangsu, China, and 4,663 age-gender-matched controls free of IS. A cohort study enrolled 4,098 participants free of stroke and lasted from 2009 to 2022. Early collected 3158 IS patients aged between 35 and 80 years were followed up an average of 5.86-year to follow up their long-term death outcomes. Two tagSNPs of the THBS1 gene, rs2236471 and rs3743125, were genotyped in all subjects and THBS1 mRNA expression of peripheral leukocyte was measured using RT-qPCR in 314 IS cases and 314 controls. Results There is no significant difference in genotype and haplotype frequencies of rs2236741 and rs3743125 between IS cases and controls (all P > 0.05). Furthermore, the cohort studies did not observe significant associations between THBS1 variants and the risk of IS incidence or long-term death after IS (all P > 0.05). The THBS1 mRNA expression level (2–ΔΔCT) in IS cases was approximately equal to that in controls (1.01 vs. 0.99, P = 0.833). In addition, THBS1 mRNA expression had no significant association with all-cause death, stroke death, and IS death of IS patients (all P > 0.05). Conclusion Therefore, our study suggested that there is no significant association of THBS1 polymorphisms and mRNA expression level with the risk of IS and long-term death after IS.
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Affiliation(s)
- Changying Chen
- Department of Epidemiology, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Xuemei Chen
- Department of Neurology, The Affiliated Jiangning Hospital of Nanjing Medical University, Nanjing, China
| | - Siyuan Yang
- Department of Neurology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Qingqing Li
- Department of Neurology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Zhanyun Ren
- Department of Neurology, The Affiliated Yixing Hospital of Jiangsu University, Yixing, China
| | - Lu Wang
- Department of Neurology, Jurong Hospital Affiliated to Jiangsu University, Jurong People’s Hospital, Jurong, China
| | - Yuzhang Jiang
- Department of Medical Laboratory, Huai’an First People’s Hospital, The Affiliated Huai’an No.1 People’s Hospital of Nanjing Medical University, Huai’an, China
| | - Xincheng Gu
- Department of Epidemiology, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Fangyuan Liu
- Department of Epidemiology, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Jialing Mu
- Department of Epidemiology, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Lihua Liu
- Department of Neurology, Jurong Hospital Affiliated to Jiangsu University, Jurong People’s Hospital, Jurong, China
| | - Yi Wang
- Department of Neurology, Jurong Hospital Affiliated to Jiangsu University, Jurong People’s Hospital, Jurong, China
| | - Junrong Li
- Department of Neurology, The Affiliated Jiangning Hospital of Nanjing Medical University, Nanjing, China
| | - Yanhua Yu
- Department of Neurology, The Affiliated Jiangning Hospital of Nanjing Medical University, Nanjing, China
| | - Jun Zhang
- Suzhou Center for Disease Control and Prevention, Suzhou, China
| | - Chong Shen
- Department of Epidemiology, School of Public Health, Nanjing Medical University, Nanjing, China
- *Correspondence: Chong Shen,
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Li J, Sun G, Ma H, Wu X, Li C, Ding P, Lu S, Li Y, Yang P, Li C, Yang J, Peng Y, Meng Z, Wang L. Identification of immune-related hub genes and miRNA-mRNA pairs involved in immune infiltration in human septic cardiomyopathy by bioinformatics analysis. Front Cardiovasc Med 2022; 9:971543. [PMID: 36204577 PMCID: PMC9530044 DOI: 10.3389/fcvm.2022.971543] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Accepted: 08/29/2022] [Indexed: 11/13/2022] Open
Abstract
Abstract Septic cardiomyopathy (SCM) is a serious complication caused by sepsis that will further exacerbate the patient's prognosis. However, immune-related genes (IRGs) and their molecular mechanism during septic cardiomyopathy are largely unknown. Therefore, our study aims to explore the immune-related hub genes (IRHGs) and immune-related miRNA-mRNA pairs with potential biological regulation in SCM by means of bioinformatics analysis and experimental validation. Method Firstly, screen differentially expressed mRNAs (DE-mRNAs) from the dataset GSE79962, and construct a PPI network of DE-mRNAs. Secondly, the hub genes of SCM were identified from the PPI network and the hub genes were overlapped with immune cell marker genes (ICMGs) to further obtain IRHGs in SCM. In addition, receiver operating characteristic (ROC) curve analysis was also performed in this process to determine the disease diagnostic capability of IRHGs. Finally, the crucial miRNA-IRHG regulatory network of IRHGs was predicted and constructed by bioinformatic methods. Real-time quantitative reverse transcription-PCR (qRT-PCR) and dataset GSE72380 were used to validate the expression of the key miRNA-IRHG axis. Result The results of immune infiltration showed that neutrophils, Th17 cells, Tfh cells, and central memory cells in SCM had more infiltration than the control group; A total of 2 IRHGs were obtained by crossing the hub gene with the ICMGs, and the IRHGs were validated by dataset and qRT-PCR. Ultimately, we obtained the IRHG in SCM: THBS1. The ROC curve results of THBS1 showed that the area under the curve (AUC) was 0.909. Finally, the miR-222-3p/THBS1 axis regulatory network was constructed. Conclusion In summary, we propose that THBS1 may be a key IRHG, and can serve as a biomarker for the diagnosis of SCM; in addition, the immune-related regulatory network miR-222-3p/THBS1 may be involved in the regulation of the pathogenesis of SCM and may serve as a promising candidate for SCM therapy.
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Affiliation(s)
- Jingru Li
- Department of Cardiology, The First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Guihu Sun
- Department of Cardiology, The First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Haocheng Ma
- Department of Cardiology, The First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Xinyu Wu
- Department of Cardiology, The First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Chaozhong Li
- Department of Emergency, The First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Peng Ding
- Department of Cardiology, The First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Si Lu
- Department of Cardiology, The First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Yanyan Li
- Department of Cardiology, The First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Ping Yang
- Department of Cardiology, The First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Chaguo Li
- Department of Cardiology, The First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Jun Yang
- Department of Cardiology, The First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Yunzhu Peng
- Department of Cardiology, The First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Zhaohui Meng
- Department of Cardiology, The First Affiliated Hospital of Kunming Medical University, Kunming, China
- *Correspondence: Zhaohui Meng
| | - Luqiao Wang
- Department of Cardiology, The First Affiliated Hospital of Kunming Medical University, Kunming, China
- Luqiao Wang
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