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Luo Y, Li Y, He L, Tu H, Lin X, Zhao F, Huang Y, Wen M, Wang L, Yang Z. Xinyang tablet ameliorates sepsis-induced myocardial dysfunction by regulating Beclin-1 to mediate macrophage autophagy and M2 polarization through LncSICRNT1 targeting E3 ubiquitin ligase TRAF6. Chin Med 2023; 18:143. [PMID: 37919806 PMCID: PMC10621131 DOI: 10.1186/s13020-023-00832-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 09/05/2023] [Indexed: 11/04/2023] Open
Abstract
OBJECTIVE Xinyang Tablet (XYT) has emerged as a potential intervention to counter sepsis-induced myocardial dysfunction (SMID) by influencing macrophage autophagy and M2 polarization. This study aimed to unravel the underlying mechanism of XYT in sepsis-induced myocardial dysfunction (SIMD). METHODS A microarray analysis was employed to explore sepsis-related changes, and bioinformatics analysis was used to predict lncRNAs binding to tumor necrosis factor receptor-associated factor 6 (TRAF6). This studio utilized SIMD mouse models induced by lipopolysaccharide (LPS) injection, followed by treatments involving varied doses of XYT, digoxin (positive control), or si-LncSICRNT1. After seven days, evaluations encompassing mouse hair/mental state/diet/weight were measured, and cardiac function via echocardiography were conducted. Myocardial tissue changes were observed using hematoxylin-eosin staining. Additionally, bone marrow-derived macrophages (BMDMs) subjected to LPS for M1 polarization were treated with oe-LncSICRNT1, si-TRAF6 and their negative control, XYT, or autophagy inhibitor 3-Methyladenine (3-MA) (positive control). RT-qPCR and Western blot analyses were employed to assess LncSICRNT1, TRAF6, Beclin-1, LC3II/LC3I, and p62 levels. Immunohistochemistry and flow cytometry were used for M1/M2 polarization markers, while enzyme-linked immunosorbent assay (ELISA) gauged inflammatory factor levels. Interaction between TRAF6 and LncSICRNT1 was probed using RNA pull-down and RNA immunoprecipitation (RIP) assays. RESULTS Chip analysis obtained 1463 differentially expressed lncRNAs, including LINC01550 (LncSICRNT1). Further prediction indicated that LncSICRNT1 was highly likely to directly bind to TRAF6. XYT treatment in LPS-induced SIMD mice led to notable enhancements in sleep/hair/diet/activity, increased weight/left ventricular end-diastolic diameter (LVEDd)/LV ejection fraction (LVEF)/LV fraction shortening (LVFS). These improvements were associated with elevated LncSICRNT1 expression and decreased TRAF6 protein levels, culminating in reduced myocardial inflammatory responses and improved cardiac function. Notably, XYT was found to suppress macrophage M1 polarization, while enhancing M2 polarization, ultimately benefitting cardiac function via LncSICRNT1 modulation. Furthermore, the study revealed LncSICRNT1 modulated Beclin-1 ubiquitination and restrained macrophage autophagy by targeting TRAF6 expression. CONCLUSION The study highlights XYT's potential to ameliorate LPS-induced SIMD by elevating LncSICRNT1 expression, influencing TRAF6 expression, and regulating Beclin-1 ubiquitination. These actions collectively inhibit macrophage autophagy and foster M1/M2 polarization, contributing to cardiac function improvement.
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Affiliation(s)
- Yuanyuan Luo
- Department of Intensive Care Unit, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yuanmei Li
- Department of Rehabilitation Medicine, Nanfang Hospital of Southern Medical University, Guangzhou, China
| | - Liwei He
- Department of Cardiology, Nanfang Hospital of Southern Medical University, Guangzhou, China
| | - Haitao Tu
- Department of Nephrology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Xinfeng Lin
- Department of Intensive Care Unit, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Fengli Zhao
- Department of Intensive Care Unit, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yusheng Huang
- Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Minyong Wen
- Department of Intensive Care Unit, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Lingjun Wang
- Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Zhongqi Yang
- President's Office, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China.
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Xiong W, Feng S, Zhao Y, Liu X, Gong J. Revealing Landscape of Competing Endogenous RNA Networks in Sepsis-Induced Cardiovascular Diseases. Rev Cardiovasc Med 2023; 24:214. [PMID: 39077015 PMCID: PMC11266464 DOI: 10.31083/j.rcm2407214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 01/11/2023] [Accepted: 02/06/2023] [Indexed: 07/31/2024] Open
Abstract
Cardiovascular dysfunction induced by sepsis is one of the most common phenotypes of cardiovascular diseases (CVDs), which is closely related to the high mortality of sepsis and is an urgent health problem to be solved worldwide. Unfortunately, the exact pathogenesis and pathophysiology of sepsis-induced cardiovascular dysfunction are not clear. As a research hotspot in recent years, competing endogenous RNA (ceRNA) networks are involved in the modulation of the pathophysiological progression of many diseases, including sepsis-related CVDs. Both long noncoding RNAs (lncRNAs) and circular RNAs (circRNAs) can specifically bind to microRNAs (miRNAs) as ceRNAs to target messenger RNAs (mRNAs), forming a ceRNA network composed of lncRNA/circRNA-miRNA-mRNA. This review demonstrates the potential regulatory mechanism of the ceRNA networks in sepsis-induced cardiovascular toxicity, hoping to provide novel therapeutic strategies and monitoring targets for sepsis-related CVDs.
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Affiliation(s)
- Wei Xiong
- Laboratory of Clinical Research, Ziyang People’s Hospital, Ziyang Hospital of Sichuan Provincial People’s Hospital, 641300 Ziyang, Sichuan, China
- Department of Anesthesiology, West China Hospital, Sichuan University, 610041 Chengdu, Sichuan, China
| | - Shiyan Feng
- Laboratory of Clinical Research, Ziyang People’s Hospital, Ziyang Hospital of Sichuan Provincial People’s Hospital, 641300 Ziyang, Sichuan, China
- Emergency Medical Center, Sichuan Provincial People’s Hospital, University of Electronic Science and Technology, 610072 Chengdu, Sichuan, China
| | - Yanhua Zhao
- Laboratory of Clinical Research, Ziyang People’s Hospital, Ziyang Hospital of Sichuan Provincial People’s Hospital, 641300 Ziyang, Sichuan, China
| | - Xinquan Liu
- Laboratory of Clinical Research, Ziyang People’s Hospital, Ziyang Hospital of Sichuan Provincial People’s Hospital, 641300 Ziyang, Sichuan, China
| | - Jian Gong
- Laboratory of Clinical Research, Ziyang People’s Hospital, Ziyang Hospital of Sichuan Provincial People’s Hospital, 641300 Ziyang, Sichuan, China
- Department of Emergency Critical Care, Ziyang People’s Hospital, Ziyang Hospital of Sichuan Provincial People’s Hospital, 641300 Ziyang, Sichuan, China
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Wang W, Zhang TN, Yang N, Wen R, Wang YJ, Zhang BL, Yang YH, Liu CF. Transcriptome-wide identification of altered RNA m 6A profiles in cardiac tissue of rats with LPS-induced myocardial injury. Front Immunol 2023; 14:1122317. [PMID: 37275860 PMCID: PMC10237353 DOI: 10.3389/fimmu.2023.1122317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 05/05/2023] [Indexed: 06/07/2023] Open
Abstract
Purpose Myocardial injury is a common complication in patients with endotoxaemia/sepsis, especially in children. Moreover, it develops through an unclear pathophysiological mechanism, and effective therapies are lacking. Recently, RNA modification, particularly N 6-methyladenosine (m6A) modification, has been found to be involved in various physiological processes and to play important roles in many diseases. However, the role of m6A modification in endotoxaemia/sepsis-induced myocardial injury is still in its infancy. Therefore, we attempted to construct the m6A modification map of myocardial injury in a rat model treated by lipopolysaccharide (LPS) and explore the role of m6A modification in LPS-induced myocardial injury. Method Myocardial injury adolescent rat model was constructed by intraperitoneal injection of LPS. m6A RNA Methylation Quantification Kit was used to detect overall level of m6A modification in rat cardiac tissue. m6A-specific methylated RNA immunoprecipitation followed by high-throughput sequencing (MeRIP-seq) and RNA sequencing (RNA-seq) were conducted to identify the altered m6A-modified genes and differentially expressed genes in cardiac tissue of rats treated by LPS and control rats (6 versus. 6). Bioinformatics was used to analyze the functions of differentially m6A modified genes, differentially expressed genes, and genes with both differential m6A modification and differential expression. qPCR was used to detect expression of m6A modification related enzymes. Result We found that the overall level of m6A modification in cardiac tissue of the LPS group was up-regulated compared with that of the control group. MeRIP-seq and RNA-seq results showed that genes with differential m6A modification, genes with differential expression and genes with both differential m6A modification and differential expression were closely associated with inflammatory responses and apoptosis. In addition, we found that m6A-related enzymes (Mettl16, Rbm15, Fto, Ythdc2 and Hnrnpg) were differentially expressed in the LPS group versus. the control group. Conclusion m6A modification is involved in the pathogenesis process of LPS-induced myocardial injury, possibly through the regulation of inflammatory response and apoptosis-related pathways. These results provide valuable information regarding the potential pathogenic mechanisms underlying LPS-induced myocardial injury.
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Affiliation(s)
- Wei Wang
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Tie-Ning Zhang
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Ni Yang
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Ri Wen
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Yu-Jing Wang
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Bing-Lun Zhang
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Yu-Hang Yang
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Chun-Feng Liu
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
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Yu R, Wang Y, Liang Q, Xu Y, Yusf AE, Sun L. Identification of potential biomarkers and pathways for sepsis using RNA sequencing technology and bioinformatic analysis. Heliyon 2023; 9:e15034. [PMID: 37089399 PMCID: PMC10113783 DOI: 10.1016/j.heliyon.2023.e15034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 03/22/2023] [Accepted: 03/24/2023] [Indexed: 04/05/2023] Open
Abstract
Long non-coding RNAs (lncRNAs) has been proven by many to play a crucial part in the process of sepsis. To obtain a better understanding of sepsis, the molecular biomarkers associated with it, and its possible pathogenesis, we obtained data from RNA-sequencing analysis using serum from three sepsis patients and three healthy controls (HCs). Using edgeR (one of the Bioconductor software package), we identified 1118 differentially expressed mRNAs (DEmRNAs) and 1394 differentially expressed long noncoding RNAs (DElncRNAs) between sepsis patients and HCs. We identified the biological functions of these disordered genes using Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) signaling pathway analyses. The GO analysis showed that the homophilic cell adhesion via plasma membrane adhesion molecules was the most significantly enriched category. The KEGG signaling pathway analysis indicated that the differentially expressed genes (DEGs) were most significantly enriched in retrograde endocannabinoid signaling. Using STRING, a protein-protein interaction network was also created, and Cytohubba was used to determine the top 10 hub genes. To examine the relationship between the hub genes and sepsis, we examined three datasets relevant to sepsis that were found in the gene expression omnibus (GEO) database. PTEN and HIST2H2BE were recognized as hub gene in both GSE4607, GSE26378, and GSE9692 datasets. The receiver operating characteristic (ROC) curves indicate that PTEN and HIST2H2BE have good diagnostic value for sepsis. In conclusion, this two hub genes may be biomarkers for the early diagnosis of sepsis, our findings should deepen our understanding of the pathogenesis of sepsis.
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Cheng Y, Ding N, Cao X, Wang J, Zhang J, Shi X, Xu L, Qin L. The ability of long non-coding RNA RP11-284N8.3 to predict the risk, the severity and 28-day mortality of adults with sepsis. Medicine (Baltimore) 2023; 102:e33355. [PMID: 36961174 PMCID: PMC10036070 DOI: 10.1097/md.0000000000033355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Accepted: 03/03/2023] [Indexed: 03/25/2023] Open
Abstract
In a prior study, we identified a novel sepsis specific long noncoding RNAs (lncRNA) RP11-284N8.3, which may primarily participate in T cell activation and immune response during sepsis. However, the clinical significance of lncRNA RP11-284N8.3 in sepsis remains entirely unknown. This single-center prospective cohort study enrolled 147 adults with sepsis and 74 healthy controls (HCs) with matched age and sex between January 2021 and November 2022 at our hospital. Blood samples and clinical data were collected from HCs at enrollment and from adults with sepsis within 24 hours after admission. lncRNA RP11-284N8.3 expression was detected by RT-qPCR. The relative expression of lncRNA RP11-284N8.3 was significantly decreased in adults with sepsis compared to HCs (P < .0001), in adults with septic shock compared to adults without shock (P = .0012), and in 28-day deaths compared to 28-day survivors (P = .0006). receiver operating characteristic curves of lncRNA RP11-284N8.3 in predicting sepsis severity and 28-day mortality showed an area under the curve of 0.6570 (95% confidence interval [CI]: 0.5701-0.7440) and an area under the curve of 0.6765 (95% CI: 0.5809-0.7721), respectively. Multivariate logistic regression analysis revealed that lncRNA RP11-284N8.3 was an independent risk factor for 28-day mortality in adults with sepsis (odds ratio: 0.1057, 95% CI: 0.0115-0.7746, P = .0328). Low expression of lncRNA RP11-284N8.3 is correlated with increased risk, severity and 28-day mortality in adults with sepsis, and it may function as a potential biomarker to facilitate the diagnosis and management of sepsis.
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Affiliation(s)
- Yanwei Cheng
- Department of Emergency, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, People’s Hospital of Henan University, Zhengzhou, China
| | - Ning Ding
- Department of Emergency, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, People’s Hospital of Henan University, Zhengzhou, China
| | - Xue Cao
- Department of Rheumatology and Immunology, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, People’s Hospital of Henan University, Zhengzhou, China
| | - Jiaoyang Wang
- Department of Emergency, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, People’s Hospital of Henan University, Zhengzhou, China
| | - Jiange Zhang
- Department of Emergency, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, People’s Hospital of Henan University, Zhengzhou, China
| | - Xiaopeng Shi
- Department of Emergency, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, People’s Hospital of Henan University, Zhengzhou, China
| | - Lijun Xu
- Department of Emergency, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, People’s Hospital of Henan University, Zhengzhou, China
| | - Lijie Qin
- Department of Emergency, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, People’s Hospital of Henan University, Zhengzhou, China
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Han YC, Shen ZJ, Xiang RL, Lu B, Qian H, Li JY, Xie HZ. Long Noncoding RNA and mRNA Expression Profiles in Rats with LPS-induced Myocardial Dysfunction. Curr Genomics 2023; 23:412-423. [PMID: 37920555 PMCID: PMC10173418 DOI: 10.2174/1389202924666230119160258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 12/09/2022] [Accepted: 01/09/2023] [Indexed: 01/21/2023] Open
Abstract
Background Sepsis is an uncontrolled systemic inflammatory response. Long noncoding RNAs (lncRNAs) are involved in the pathogenesis of sepsis. However, little is known about the roles of lncRNAs in sepsis-induced myocardial dysfunction. Objective We aimed to determine the regulatory mechanism of lncRNAs in sepsis-induced myocardial dysfunction. Methods In this study, we analysed the lncRNA and mRNA expression profiles using microarray analysis. Gene Ontology, Kyoto Encyclopedia of Genes and Genomes, protein-protein interaction network, and gene set enrichment analysis were used to evaluate the data. We also constructed coding and noncoding coexpression and competing endogenous RNA networks to investigate the mechanisms. Results In vivo lipopolysaccharide -induced sepsis rat model was established. A total of 387 lncRNAs and 1,952 mRNAs were identified as significantly changed in the left ventricle. Kyoto Encyclopedia of Genes and Genomes analysis of mRNAs showed that the upregulated genes were mainly enriched in the "complement and coagulation cascade pathway" and "immune-related biological processes" terms. Eight significantly changed lncRNAs detected by RT-qPCR may be responsible for these processes. A competing endogenous RNA network was generated, and the results indicated that eight lncRNAs were related to the "calcium ion binding" process. Conclusion These results demonstrate that crosstalk between lncRNAs and mRNAs may play important roles in the development of sepsis-induced myocardial dysfunction.
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Affiliation(s)
- Ye-Chen Han
- Department of Cardiology, Peking Union Medical College Hospital, No. 1 North Street, Dongdan, Beijing, 100032, China
| | - Zhu-Jun Shen
- Department of Cardiology, Peking Union Medical College Hospital, No. 1 North Street, Dongdan, Beijing, 100032, China
| | - Ruo-Lan Xiang
- School of Basic Medical Sciences, Peking University, Beijing, China
| | - Bo Lu
- Department of Gastroenterology, Peking Union Medical College Hospital, Beijing, China
| | - Hao Qian
- Department of Cardiology, Peking Union Medical College Hospital, No. 1 North Street, Dongdan, Beijing, 100032, China
| | - Jing-Yi Li
- Department of Cardiology, Peking Union Medical College Hospital, No. 1 North Street, Dongdan, Beijing, 100032, China
| | - Hong-Zhi Xie
- Department of Cardiology, Peking Union Medical College Hospital, No. 1 North Street, Dongdan, Beijing, 100032, China
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Xu H, Ye W, Shi B. LncRNA MALAT1 Regulates USP22 Expression Through EZH2-Mediated H3K27me3 Modification to Accentuate Sepsis-Induced Myocardial Dysfunction. Cardiovasc Toxicol 2022; 22:813-830. [PMID: 35726125 DOI: 10.1007/s12012-022-09758-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 06/03/2022] [Indexed: 11/29/2022]
Abstract
Metastasis-associated lung adenocarcinoma transcript 1 (MALAT1), a long non-coding RNA (lncRNA), has been confirmed to recruit enhancer of zeste 2 polycomb repressive complex 2 subunit (EZH2) to regulate cardiomyocyte apoptosis in diabetic cardiomyopathy. However, whether the similar regulatory axis exists in sepsis-induced myocardial dysfunction (SIMD) has not been clearly established. The current study sought to define the mechanism governing MALAT1-mediated EZH2 in SIMD. MALAT1 was significantly upregulated in lipopolysaccharide-induced cardiomyocytes. Depletion of MALAT1 by caudal vein injection of small interfering RNA targeting MALAT1 alleviated myocardial injury in SIMD rats, restored cardiac function, reduced oxidative stress production and fibrosis, and inhibited inflammatory factors and apoptosis in myocardial tissues. Moreover, MALAT1 bound to EZH2 and promoted EZH2 activity in the nucleus of cardiomyocytes. EZH2 repressed ubiquitin-specific peptidase 22 (USP22) expression through H3K27me3 modification. EZH2 elevation aggravated the cardiac injury in SIMD rats, while USP22 upregulation inhibited the effect of EZH2, which reduced the cardiac injury in SIMD rats. Taken together, MALAT1 decreased USP22 expression by interacting with EZH2, thereby worsening SIMD, highlighting an attractive therapeutic strategy for SIMD.
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Affiliation(s)
- Hong Xu
- Department of Cardiovascular Division, Shandong Provincial Third Hospital, Jinan, 250031, Shandong, People's Republic of China
| | - Wei Ye
- Department of Respiratory Medicine, Shandong Provincial Third Hospital, Jinan, 250031, Shandong, People's Republic of China
| | - Baochang Shi
- Department of Hepatobiliary Surgery, Shandong Provincial Third Hospital, No. 12, WuYingShan Middle Road, Tianqiao District, Jinan, 250031, Shandong, People's Republic of China.
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Liu J, Li X, Yang J, Zhang D. LncRNA ENSMUST_147219 mediates the progression of ischemic acute kidney injury by targeting the miR-221-5p/IRF6 axis. Apoptosis 2022; 27:531-544. [PMID: 35618996 PMCID: PMC9308590 DOI: 10.1007/s10495-022-01730-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/24/2022] [Indexed: 02/02/2023]
Abstract
Although previous studies have revealed that long noncoding RNAs (lncRNAs) regulate the progression of ischemic acute kidney injury (AKI), the exact role and mechanism of lncRNA ENSMUST_147219 in ischemic AKI are not clear. In the present study, lncRNA ENSMUST_147219 was induced by ischemic injury in vitro and in vivo. Functionally, lncRNA ENSMUST_147219 mediated apoptosis in mouse proximal tubule‐derived cell line (BUMPT). Mechanistically, lncRNA ENSMUST_147219 sponged the microRNA (miR)-221-5p to upregulate the expression of interferon regulatory factor 6 (IRF6) to drive apoptosis. Finally, knockdown of lncRNA ENSMUST_147219 markedly attenuated the ischemic AKI by targeting the miR-221-5p/IRF6 axis. Collectively, our data demonstrated that lncRNA ENSMUST_147219 promoted the development of ischemic AKI by regulating the miR-221-5p/IRF6 pathway, which could be considered a new therapeutic target for ischemic AKI.
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Affiliation(s)
- Jing Liu
- Department of Nephrology, The Third Affiliated Hospital of Chongqing Medical University, Chongqing, 401120, People's Republic of China.,Department of Emergency Medicine, Second Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China.,Emergency Medicine and Difficult Diseases Institute, Second Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China
| | - Xiaozhou Li
- Department of Emergency Medicine, Second Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China.,Emergency Medicine and Difficult Diseases Institute, Second Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China
| | - Jurong Yang
- Department of Nephrology, The Third Affiliated Hospital of Chongqing Medical University, Chongqing, 401120, People's Republic of China.
| | - Dongshan Zhang
- Department of Emergency Medicine, Second Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China. .,Emergency Medicine and Difficult Diseases Institute, Second Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China. .,Department of Nephrology, Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, People's Republic of China.
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Yang N, Wang W, Wen R, Zhang TN, Liu CF. Integrated insights into the mechanisms underlying sepsis-induced myocardial depression using a quantitative global proteomic analysis. J Proteomics 2022; 262:104599. [PMID: 35483652 DOI: 10.1016/j.jprot.2022.104599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 03/09/2022] [Accepted: 04/11/2022] [Indexed: 11/29/2022]
Abstract
Sepsis-induced myocardial depression is common among patients in the intensive care unit; however, the exact mechanisms underlying this condition remain unclear. We investigated differences in the expression of specific proteins and determined the potential functions of the proteins in a rat model of lipopolysaccharide-induced septic shock. Left ventricular tissue was excised from 16 rats (sepsis group, 8; control group, 8) and analysed. Quantitative analysis of the global proteome was performed using 4D label-free technique. Bioinformatic analyses were conducted based on differentially expressed (DE) proteins. Parallel reaction monitoring (PRM) validation for selected proteins and western blotting for selected global protein modifications in heart tissues were also performed. As a result, out of 3653 proteins identified, 108 were expressed differentially between the two groups. The bioinformatic analyses revealed that DE proteins play important roles in metabolism- and immune-related pathways. PRM results supported the plausibility and reliability of the proteomics data. Modification of heart tissue acetyllysine, succinyllysine, 2-hydroxyisobutyryllysine, and lactyllysine revealed clear differences between the two groups, indicating the effects of protein modification. Our study suggested that expression patterns of global proteins in heart tissue were different between the two groups. These results provide new valuable information on the possible mechanisms underlying sepsis-induced myocardial depression. SIGNIFICANCE: The expression patterns of global proteins in the heart tissues of patients with sepsis and control groups remain unknown. In this study, we used the 4D label-free proteomics technique to compare differentially expressed (DE) proteins between the sepsis and control groups. We identified 3653 proteins, 108 of which were expressed differentially between the sepsis and control groups. Further bioinformatic analyses revealed that DE proteins play critical roles in metabolism- and immune-related processes and pathways. Interestingly, modification of heart tissue acetyllysine, succinyllysine, 2-hydroxyisobutyryllysine, and lactyllysine revealed clear differences between the sepsis and control groups. The findings of this study improve our understanding of the basic molecular mechanisms underlying sepsis-induced myocardial depression.
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Affiliation(s)
- Ni Yang
- Department of Pediatrics, PICU, Shengjing Hospital of China Medical University, Shenyang, China
| | - Wei Wang
- Department of Pediatrics, PICU, Shengjing Hospital of China Medical University, Shenyang, China
| | - Ri Wen
- Department of Pediatrics, PICU, Shengjing Hospital of China Medical University, Shenyang, China
| | - Tie-Ning Zhang
- Department of Pediatrics, PICU, Shengjing Hospital of China Medical University, Shenyang, China.
| | - Chun-Feng Liu
- Department of Pediatrics, PICU, Shengjing Hospital of China Medical University, Shenyang, China.
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Chen J, Ren H, Liu B. Evaluating the potency of blood long noncoding RNA PVT1 as candidate biomarker reflecting inflammation, multiple organ dysfunction, and mortality risk in sepsis patients. J Clin Lab Anal 2022; 36:e24268. [PMID: 35119126 PMCID: PMC8906045 DOI: 10.1002/jcla.24268] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 01/17/2022] [Accepted: 01/21/2022] [Indexed: 12/11/2022] Open
Abstract
OBJECTIVE Long noncoding RNA plasmacytoma variant translocation 1 (lnc-PVT1) promotes septic inflammation and organ injuries via multiple ways, while its clinical engagement in sepsis management is indistinct. This study aimed to investigate its relationship with inflammation, multiple organ dysfunction, and mortality risk in sepsis patients. METHODS Sepsis patients and age-/gender-matched healthy controls were enrolled; their lnc-PVT1 expression in plasma were detected by RT-qPCR. For sepsis patients only, the inflammatory cytokine levels (tumor necrosis factor (TNF)-α, interleukin (IL)-1β, and IL-17A) in plasma were detected by ELISA. According to the survival data during 28-day follow-up, sepsis patients were divided into sepsis survivors and sepsis deaths. RESULTS Lnc-PVT1 expression was increased in sepsis patients (N = 157) compared with healthy controls (N = 80) (p < 0.001). In sepsis patients, lnc-PVT1 was linked with higher acute physiology and chronic health evaluation II (APACHEII) score (p = 0.001), total sequential organ failure assessment (SOFA) score, and its most subitems (SOFA-respiratory system, SOFA-coagulation, SOFA-liver, SOFA-cardiovascular system, and SOFA-renal system scores) (all p < 0.01), but not SOFA-nervous system score (p = 0.091); it did not relate to primary infection sites either (p = 0.204). Furthermore, lnc-PVT1 correlated with increased C-reactive protein, TNF-α, IL-1β, and IL-17 in sepsis patients (all p < 0.01). Additionally, lnc-PVT1 expression was higher in sepsis deaths than that in sepsis survivors (p < 0.001), following receiver-operating characteristic curve disclosed that lnc-PVT1 predicted 28-day septic mortality risk (area under the curve: 0.789, 95% confidence interval: 0.702-0.875). CONCLUSION Circulating lnc-PVT1 exhibits the potential as a biomarker in sepsis patients to inform inflammation, multiple organ dysfunction, and mortality risk.
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Affiliation(s)
- Jing Chen
- Department of Critical Care Medicine, Wuhan Asia General Hospital, Wuhan, China
| | - Haibo Ren
- Department of Critical Care Medicine, Wuhan Asia General Hospital, Wuhan, China
| | - Bo Liu
- Department of Critical Care Medicine, Wuhan Asia General Hospital, Wuhan, China
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11
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Du H, Zhang H, Yang R, Qiao L, Shao H, Zhang X. Small interfering RNA-induced silencing lncRNA PVT1 inhibits atherosclerosis via inactivating the MAPK/NF-κB pathway. Aging (Albany NY) 2021; 13:24449-24463. [PMID: 34775377 PMCID: PMC8610127 DOI: 10.18632/aging.203696] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 10/25/2021] [Indexed: 12/20/2022]
Abstract
Atherosclerosis (AS) is a chronic disease of the arterial wall. The role of lncRNAs in AS has been acknowledged. This study investigated the role of lncRNA plasmacytoma variant translocation 1 (PVT1) in AS via the MAPK/NF-κB pathway. Serum samples were collected from AS and non-AS patients. Serum levels of PVT1, CRP, IL-6, IL-1β, and TNF-α were determined. AS mouse model was established and transfected with si-PVT1. Levels of TG, TC, HDL, LDL, MAPK, NF-κB, MMP-2, MMP-9, TIMP-1, and macrophage content were detected. Human arterial vascular smooth muscle cells (HA-VSMCs) induced by 50 mg/mL oxLDL were transfected with si-PVT1 or oe-PVT1 and added with MAPK inhibitor U0126. Viability, apoptosis, cell cycle, colony formation and DNA replication were assessed. Levels of apoptosis-related proteins were detected. Consequently, PVT1 was highly expressed in AS patients. Silencing PVT1 decreased levels of TG, TC, LDL, IL-6, IL-1β, TNF-α, MMP-2, MMP-9, CRP, TIMP-1, MAPK, and NF-κB, increased HDL, reduced atherosclerotic plaques and macrophage content in mice, inhibited viability, clones and EdU positive rates in HA-VSMCs, but promoted apoptosis and cell cycle arrest. Inhibition of MAPK/NF-κB pathway suppressed proliferation and promoted apoptosis of HA-VSMCs while PVT1 overexpression facilitated AS development. Briefly, silencing PVT1 inhibited AS development by downregulating MAPK/NF-κB pathway.
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Affiliation(s)
- Hong Du
- Department of Cardiology, Second Hospital of Hebei Medical University, Shijiazhaung 050000, Hebei, P.R. China
| | - Hui Zhang
- Department of Cardiology, Second Hospital of Hebei Medical University, Shijiazhaung 050000, Hebei, P.R. China
| | - Rong Yang
- Department of Cardiology, Second Hospital of Hebei Medical University, Shijiazhaung 050000, Hebei, P.R. China
| | - Li Qiao
- Department of Cardiology, Second Hospital of Hebei Medical University, Shijiazhaung 050000, Hebei, P.R. China
| | - Huiyu Shao
- Department of Cardiology, Second Hospital of Hebei Medical University, Shijiazhaung 050000, Hebei, P.R. China
| | - Xiaolin Zhang
- Department of Cardiology, Second Hospital of Hebei Medical University, Shijiazhaung 050000, Hebei, P.R. China
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12
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Wang C, Liang G, Shen J, Kong H, Wu D, Huang J, Li X. Long Non-Coding RNAs as Biomarkers and Therapeutic Targets in Sepsis. Front Immunol 2021; 12:722004. [PMID: 34630395 PMCID: PMC8492911 DOI: 10.3389/fimmu.2021.722004] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 08/18/2021] [Indexed: 12/14/2022] Open
Abstract
Sepsis, an infection-induced systemic inflammatory disorder, is often accompanied by multiple organ dysfunction syndromes with high incidence and mortality rates, and those who survive are often left with long-term sequelae, bringing great burden to social economy. Therefore, novel approaches to solve this puzzle are urgently needed. Previous studies revealed that long non-coding RNAs (lncRNAs) have exerted significant influences on the process of sepsis. The aim of this review is to summarize our understanding of lncRNAs as potential sepsis-related diagnostic markers and therapeutic targets, and provide new insights into the diagnosis and treatment for sepsis. In this study, we also introduced the current diagnostic markers of sepsis and discussed their limitations, while review the research advances in lncRNAs as promising biomarkers for diagnosis and prognosis of sepsis. Furthermore, the roles of lncRNAs in sepsis-induced organ dysfunction were illustrated in terms of different organ systems. Nevertheless, further studies should be carried out to elucidate underlying molecular mechanisms and pathological process of sepsis.
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Affiliation(s)
- Chuqiao Wang
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People's Hospital, State Key Laboratory of Respiratory Disease, Sino-French Hoffmann Institute, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China.,Nanshan School, Guangzhou Medical University, Guangzhou, China
| | - Guorui Liang
- Nanshan School, Guangzhou Medical University, Guangzhou, China
| | - Jieni Shen
- Nanshan School, Guangzhou Medical University, Guangzhou, China
| | - Haifan Kong
- Nanshan School, Guangzhou Medical University, Guangzhou, China
| | - Donghong Wu
- Nanshan School, Guangzhou Medical University, Guangzhou, China
| | - Jinxiang Huang
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People's Hospital, State Key Laboratory of Respiratory Disease, Sino-French Hoffmann Institute, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China
| | - Xuefeng Li
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People's Hospital, State Key Laboratory of Respiratory Disease, Sino-French Hoffmann Institute, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China.,Shenzhen Luohu People's Hospital, The Third Affiliated Hospital of Shenzhen University, Shenzhen, China
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13
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Shao J, Zhang Q, Wang P, Wang Z. LncRNA MALAT1 promotes breast cancer progression by sponging miR101-3p to mediate mTOR/PKM2 signal transmission. Am J Transl Res 2021; 13:10262-10275. [PMID: 34650695 PMCID: PMC8507063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2021] [Accepted: 07/06/2021] [Indexed: 06/13/2023]
Abstract
Breast cancer (BC) is a common malignant tumor in women and exhibits a poor prognosis. This study examined the role and underlying mechanisms of long non-coding RNA (lncRNA), metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) in BC pathogenesis. The MALAT1 expression levels in BC cells and tissues were measured using quantitative reverse transcription-polymerase chain reactions. CCK-8 kits and wound healing and transwell assays were used to evaluate the cell growth, invasion, and migration of BC. Bioinformatics and dual-luciferase reporter analyses were conducted to identify MALAT1's potential targets. The protein levels in the mTOR/PKM2 pathway were assessed using Western blot analyses. The MALAT1 overexpressions in the BC tissues and cells were considered to be a predictor of poor prognosis. Therefore, MALAT1 downregulation significantly inhibited BC progression, including cell growth, invasion, and migration. MALAT1 was anticipated to be an miR-101-3p target according to the dual-luciferase reporter gene assay results. The miR-101-3p levels were indirectly proportional to the MALAT1 expressions and the suppressed BC cells. Additionally, the mTOR/PKM2 pathway was directly targeted by miR-101-3p. MALAT1 overexpression significantly decreased the miR-101-3p gene levels and increased the mTOR/PKM2 pathway protein expressions. This miR-101-3p inhibition blocked MALAT1. These findings suggest that lncRNA MALAT1 is related to BC pathogenesis using the miR101-3p/mTOR/PKM2 pathway and is a potential therapeutic target.
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Affiliation(s)
- Jianqiang Shao
- Department III of Thyroid & Breast, Cangzhou Central Hospital Cangzhou 061000, Hebei, China
| | - Qin Zhang
- Department III of Thyroid & Breast, Cangzhou Central Hospital Cangzhou 061000, Hebei, China
| | - Peng Wang
- Department III of Thyroid & Breast, Cangzhou Central Hospital Cangzhou 061000, Hebei, China
| | - Zunyi Wang
- Department III of Thyroid & Breast, Cangzhou Central Hospital Cangzhou 061000, Hebei, China
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14
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Cheng Y, Cao X, Zhang J, Chen D, Zhu J, Xu L, Qin L. Dysregulated lncRNAs are Involved in the Progress of Sepsis by Constructing Regulatory Networks in Whole Blood Cells. Front Pharmacol 2021; 12:678256. [PMID: 34483898 PMCID: PMC8416166 DOI: 10.3389/fphar.2021.678256] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 07/05/2021] [Indexed: 12/13/2022] Open
Abstract
Sepsis is a highly heterogeneous syndrome that is caused by an unbalanced host response to an infection. Long noncoding RNAs (lncRNAs) have been reported to exert regulatory roles in a variety of biological processes, and became potential biomarkers and therapeutic targets for diverse diseases. However, current understanding on the roles of lncRNAs in sepsis is extremely limited. Herein, to decipher the underlying functions of lncRNAs, we reexplored the 83 transcriptome datasets from specimens with sepsis, no_sepsis by final diagnosis, and control. The results of differentially expressed genes (DEGs), differentially expressed lncRNA (DElncRNA) analysis, and co-expression analysis of lncRNA–mRNA pairs were obtained. We found that the expression pattern of lncRNAs was significantly activated in sepsis specimens, which was clearly distinguished in sepsis from no_sepsis and control specimens. By performing co-expression analysis, we found DElncRNAs were closely related to T-cell activation and immune response–related terms in sepsis by regulating mRNA expression in the trans manner. The lncRNA–mRNA network and the qRT-PCR test revealed that lncRNAs LINC00861, RP11-284N8.3, and CTB-61M7.2 were significantly correlated with the pathogenesis of sepsis. In addition, weighted gene co-expression analysis (WGCNA) and cis-regulation analysis also revealed sepsis-specific lncRNAs were highly associated with important biological processes correlated with sepsis. In summary, the systematic dysregulation of lncRNAs is tightly involved in the remodeling of gene expression regulatory network in sepsis, and the lncRNA–mRNA expression network may be used to refine biomarker predictions for developing novel therapeutic approaches in sepsis.
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Affiliation(s)
- Yanwei Cheng
- Department of Emergency, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Zhengzhou, China
| | - Xue Cao
- Department of Rheumatology and Immunology, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Zhengzhou, China
| | - Jiange Zhang
- Department of Emergency, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Zhengzhou, China
| | - Dong Chen
- ABLife BioBigData Institute, Wuhan, China
| | - Juan Zhu
- Department of Emergency, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Zhengzhou, China
| | - Lijun Xu
- Department of Emergency, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Zhengzhou, China
| | - Lijie Qin
- Department of Emergency, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Zhengzhou, China
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15
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Wang X, Li XL, Qin LJ. The lncRNA XIST/miR-150-5p/c-Fos axis regulates sepsis-induced myocardial injury via TXNIP-modulated pyroptosis. J Transl Med 2021; 101:1118-1129. [PMID: 34045679 DOI: 10.1038/s41374-021-00607-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 04/13/2021] [Accepted: 04/15/2021] [Indexed: 12/21/2022] Open
Abstract
Myocardial injury is a severe complication of sepsis and contributes substantially to the death of critically ill patients. Long non-coding RNAs (lncRNAs) participate in the pathogenesis of sepsis-induced myocardial injury. In this study, we investigated the role of lncRNA X-inactive specific transcript (XIST) in septic myocardial injury and explored its mechanism. Lipopolysaccharide (LPS)-stimulated H9C2 cells and rats subjected to cecal ligation and puncture (CLP) were used as the in vitro and in vivo models. After exposure to LPS, XIST and c-Fos levels were upregulated, but miR-150-5p was downregulated in H9C2 cardiomyocytes and myocardial tissues. XIST affected viability, apoptosis, and pyroptosis in LPS-challenged H9C2 cells. Moreover, XIST knockdown attenuated LPS-induced injury in H9C2 cells by targeting the miR-150-5p/c-Fos axis. c-Fos could bound to the promoter of the TXNIP/XIST gene and enhanced TXNIP/XIST expression. Silencing of XIST improved cardiac function and survival rate and reduced apoptosis and pyroptosis by regulating the miR-150-5p/c-Fos axis in septic rats in vivo. Taken together, our data show that XIST/miR-150-5p/c-Fos axis affected septic myocardial injury, which may indicate a novel therapeutic strategy for sepsis-induced myocardial injury.
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Affiliation(s)
- Xin Wang
- Department of Emergency Medicine, Henan Provincial People's Hospital, Zhengzhou, Henan, PR China
| | - Xing-Liang Li
- Department of Emergency Medicine, Henan Provincial People's Hospital, Zhengzhou, Henan, PR China
| | - Li-Jie Qin
- Department of Emergency Medicine, Henan Provincial People's Hospital, Zhengzhou, Henan, PR China.
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16
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Lu F, Hong Y, Liu L, Wei N, Lin Y, He J, Shao Y. Long noncoding RNAs: A potential target in sepsis-induced cellular disorder. Exp Cell Res 2021; 406:112756. [PMID: 34384779 DOI: 10.1016/j.yexcr.2021.112756] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 07/14/2021] [Accepted: 07/26/2021] [Indexed: 02/08/2023]
Abstract
Sepsis, an inflammation-related clinical syndrome, is characterized by disrupted immune homeostasis accompanied by infection and multiple organ dysfunction as determined by the Sequential Organ Failure Assessment (SOFA). Substantial evidence has recently suggested that lncRNAs orchestrate various biological processes in diseases, and lncRNAs play special roles in the diagnosis and management of sepsis. To date, very few reviews have provided clear and comprehensive clues to demonstrate the roles of lncRNAs in the pathogenesis of sepsis. Based on previously published studies, in this review, we summarize the different functions of lncRNAs in sepsis-induced cellular disorders and sepsis-induced organ failure to show the potential roles of lncRNAs in the diagnosis and management of sepsis. We further depict the function of some lncRNAs known to be pivotal regulators in the pathogenesis of sepsis to discuss the underlying molecular events. Additionally, we list and discuss several hotspots in research on lncRNAs, which may be conducive to future lncRNA-targeted therapeutic approaches for sepsis treatment.
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Affiliation(s)
- Furong Lu
- The Intensive Care Unit, The Second Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, PR China
| | - Yuan Hong
- The Intensive Care Unit, The Second Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, PR China
| | - Lizhen Liu
- The Intensive Care Unit, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, PR China
| | - Ning Wei
- The Intensive Care Unit, The Second Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, PR China
| | - Yao Lin
- The Intensive Care Unit, Clinical Medicine Research Laboratory, Jieyang Affiliated Hospital, Sun Yat-sen University, Jieyang, Guangdong, PR China
| | - Junbing He
- The Intensive Care Unit, Clinical Medicine Research Laboratory, Jieyang Affiliated Hospital, Sun Yat-sen University, Jieyang, Guangdong, PR China.
| | - Yiming Shao
- The Intensive Care Unit, The Second Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, PR China; The Intensive Care Unit, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, PR China; Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang, Guangdong, 524023, China.
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17
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Yang Y, Xue J, Qin L, Zhang J, Liu J, Yu J. LncRNA NEAT1 Promotes Inflammatory Response in Sepsis via the miR-31-5p/POU2F1 Axis. Inflammation 2021; 44:1518-1528. [PMID: 33710444 PMCID: PMC8285354 DOI: 10.1007/s10753-021-01436-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 01/28/2021] [Accepted: 02/08/2021] [Indexed: 12/17/2022]
Abstract
Sepsis is considered to be a systemic inflammatory response, which results in organ dysfunction. LncRNA nuclear-enriched abundant transcript 1 (NEAT1) involved in sepsis progression has been reported. However, the underlying mechanism of NEAT1 in sepsis-induced inflammatory response remains to be revealed. In this study, NEAT1 and POU domain class 2 transcription factor 1 (POU2F1) were highly expressed in LPS-induced septic RAW264.7 cells, opposite to miR-31-5p expression. Furthermore, we found that NEAT1 silencing inhibited LPS-induced inflammatory response and cell proliferation, and promoted cell apoptosis. Subsequently, we found that miR-31-5p interacted with NEAT1 and targeted the 3'UTR of POU2F1, and in LPS-induced RAW264.7 cells, the inhibition of NEAT1 silencing was reversed by miR-31-5p knockdown, while POU2F1 downregulation could cover the functions of miR-31-5p knockdown. In a word, this study indicates that NEAT1 inhibits the LPS-induced progression of sepsis in RAW264.7 cells by modulating miR-31-5p/POU2F1 axis, suggesting that NEAT1 will be the potential therapeutic target for sepsis.
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Affiliation(s)
- Yang Yang
- Department of Trauma Center, Affiliated Hospital of Nantong University, No. 20, Xisi Road, Chongchuan District, Nantong, 226001, Jiangsu Province, China
| | - Jianhua Xue
- Department of Trauma Center, Affiliated Hospital of Nantong University, No. 20, Xisi Road, Chongchuan District, Nantong, 226001, Jiangsu Province, China
| | - Lili Qin
- Department of Endoscopic Center, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu Province, China
| | - Jiaxuan Zhang
- Department of Trauma Center, Affiliated Hospital of Nantong University, No. 20, Xisi Road, Chongchuan District, Nantong, 226001, Jiangsu Province, China
| | - Jiajia Liu
- Department of Trauma Center, Affiliated Hospital of Nantong University, No. 20, Xisi Road, Chongchuan District, Nantong, 226001, Jiangsu Province, China.
| | - Junbo Yu
- Department of Trauma Center, Affiliated Hospital of Nantong University, No. 20, Xisi Road, Chongchuan District, Nantong, 226001, Jiangsu Province, China.
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18
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Zhang T, Liu CF, Zhang TN, Wen R, Song WL. Overexpression of Peroxisome Proliferator-Activated Receptor γ Coactivator 1-α Protects Cardiomyocytes from Lipopolysaccharide-Induced Mitochondrial Damage and Apoptosis. Inflammation 2021; 43:1806-1820. [PMID: 32529514 DOI: 10.1007/s10753-020-01255-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Mitochondrial damage is considered one of the main pathogenetic mechanisms in septic cardiomyopathy. Peroxisome proliferator-activated receptor γ coactivator 1-α (PGC-1α) is critical for maintaining energy homeostasis in different organs and in various physiological and pathological states. It is also a key regulator gene in mitochondrial metabolism. In this study, we investigated whether regulation of the PGC-1α gene had protective effects on septic cardiomyopathy. We developed a rat model of septic cardiomyopathy. H9c2 myocardiocytes were treated with lipopolysaccharide (LPS) and PGC-1α expression measured. PGC-1α-overexpressing lentivirus was used to transfect H9c2 cells. ZLN005 was used to activate PGC-1α. The effect of the inhibition of PGC-1α expression on myocardial cell injury and its underlying mechanisms were also explored. Cell viability was measured by CCK-8 assay. Mitochondrial damage was determined by measuring cellular ATP, reactive oxygen species, and the mitochondrial membrane potential. An apoptosis analysis kit was used to measure cellular apoptosis. Mitochondrial DNA was extracted and real-time PCR performed. LC3B, mitochondrial transcription factor A (TFA), P62, Bcl2, and Bax were determined by immunofluorescence. LC3B, TFA, P62, Parkin, PTEN-induced putative kinase 1, and PGC-1α proteins were determined by Western blotting. We found mitochondrial damage and apoptotic cells in the myocardial tissue of rats with septic cardiomyopathy and in LPS-treated cardiomyocytes. PGC-1α expression was decreased in the late phase of septic cardiomyopathy and in LPS-treated cardiomyocytes. PGC-1α activation by ZLN005 and PGC-1α overexpression reduced apoptosis in myocardiocytes after LPS incubation. PGC-1α gene overexpression alleviated LPS-induced cardiomyocyte mitochondrial damage by activating mitochondrial biogenesis and autophagy functions. Our study indicated that mitochondrial damage and apoptosis occurred in septic cardiomyopathy and LPS-treated cardiomyocytes. The low expression level of PGC-1α protein may have contributed to this damage. By activating the expression of PGC-1α, apoptosis was reduced in cardiomyocytes. The underlying mechanism may be that PGC-1α can activate mitochondrial biogenesis and autophagy functions, reducing mitochondrial damage and thereby reducing apoptosis.
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Affiliation(s)
- Tao Zhang
- Department of Pediatrics, PICU, Shengjing Hospital of China Medical University, No. 36, SanHao Street, Shenyang, Liaoning, 110004, People's Republic of China
| | - Chun-Feng Liu
- Department of Pediatrics, PICU, Shengjing Hospital of China Medical University, No. 36, SanHao Street, Shenyang, Liaoning, 110004, People's Republic of China.
| | - Tie-Ning Zhang
- Department of Pediatrics, PICU, Shengjing Hospital of China Medical University, No. 36, SanHao Street, Shenyang, Liaoning, 110004, People's Republic of China
| | - Ri Wen
- Department of Pediatrics, PICU, Shengjing Hospital of China Medical University, No. 36, SanHao Street, Shenyang, Liaoning, 110004, People's Republic of China
| | - Wen-Liang Song
- Department of Pediatrics, PICU, Shengjing Hospital of China Medical University, No. 36, SanHao Street, Shenyang, Liaoning, 110004, People's Republic of China
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19
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Beltrán-García J, Osca-Verdegal R, Nácher-Sendra E, Cardona-Monzonís A, Sanchis-Gomar F, Carbonell N, Pallardó FV, Lavie CJ, García-Giménez JL. Role of non-coding RNAs as biomarkers of deleterious cardiovascular effects in sepsis. Prog Cardiovasc Dis 2021; 68:70-77. [PMID: 34265333 DOI: 10.1016/j.pcad.2021.07.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 07/05/2021] [Indexed: 12/15/2022]
Abstract
The mechanisms occurring during sepsis that produce an increased risk of cardiovascular (CV) disease (CVD) are poorly understood. Even less information exists regarding CV dysfunction as a complication of sepsis, particularly for sepsis-induced cardiomyopathy. However, recent research has demonstrated that non-coding RNAs, including microRNAs, long non-coding RNAs, and circular RNAs, play a crucial role in genetic reprogramming, gene regulation, and inflammation during the development of CVD. Here we describe experimental findings showing the importance of non-coding RNAs mediating relevant mechanisms underlying CV dysfunction after sepsis, so contributing to sepsis-induced cardiomyopathy. Importantly, non-coding RNAs are critical novel regulators of CVD risk factors. Thus, they are potential candidates to improve diagnostics and prognosis of sepsis-induced cardiomyopathy and other CVD events occurring after sepsis and set the basis to design novel therapeutic strategies.
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Affiliation(s)
- Jesús Beltrán-García
- Center for Biomedical Research Network on Rare Diseases (CIBERER), Carlos III Health Institute, Valencia 900225235, Spain; INCLIVA Biomedical Research Institute, Valencia, Spain; Department of Physiology, Faculty of Medicine and Dentistry, University of Valencia, Valencia, Spain
| | - Rebeca Osca-Verdegal
- Center for Biomedical Research Network on Rare Diseases (CIBERER), Carlos III Health Institute, Valencia 900225235, Spain; Department of Physiology, Faculty of Medicine and Dentistry, University of Valencia, Valencia, Spain
| | - Elena Nácher-Sendra
- INCLIVA Biomedical Research Institute, Valencia, Spain; Department of Physiology, Faculty of Medicine and Dentistry, University of Valencia, Valencia, Spain
| | - Alejandro Cardona-Monzonís
- EpiDisease S.L. (Spin-Off CIBER-ISCIII), Parc Científic de la Universitat de València, Paterna, 46980 Valencia, Spain
| | - Fabian Sanchis-Gomar
- Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford, California, USA
| | - Nieves Carbonell
- INCLIVA Biomedical Research Institute, Valencia, Spain; Intensive Care Unit, Clinical University Hospital of Valencia, Valencia 46010, Spain
| | - Federico V Pallardó
- Center for Biomedical Research Network on Rare Diseases (CIBERER), Carlos III Health Institute, Valencia 900225235, Spain; INCLIVA Biomedical Research Institute, Valencia, Spain; Department of Physiology, Faculty of Medicine and Dentistry, University of Valencia, Valencia, Spain
| | - Carl J Lavie
- John Ochsner Heart and Vascular Institute, Ochsner Clinical School, The University of Queensland School of Medicine, New Orleans, LA, USA
| | - José Luis García-Giménez
- Center for Biomedical Research Network on Rare Diseases (CIBERER), Carlos III Health Institute, Valencia 900225235, Spain; INCLIVA Biomedical Research Institute, Valencia, Spain; Department of Physiology, Faculty of Medicine and Dentistry, University of Valencia, Valencia, Spain; EpiDisease S.L. (Spin-Off CIBER-ISCIII), Parc Científic de la Universitat de València, Paterna, 46980 Valencia, Spain.
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20
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Wang W, Yang N, Wen R, Liu CF, Zhang TN. Long Noncoding RNA: Regulatory Mechanisms and Therapeutic Potential in Sepsis. Front Cell Infect Microbiol 2021; 11:563126. [PMID: 34055659 PMCID: PMC8149942 DOI: 10.3389/fcimb.2021.563126] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 04/28/2021] [Indexed: 12/17/2022] Open
Abstract
Sepsis is a life-threatening organ dysfunction caused by a dysregulated host response to infection and is characterized by a hyperinflammatory state accompanied by immunosuppression. Long noncoding RNAs (lncRNAs) are noncoding RNAs longer than 200 nucleotides and have important roles in mediating various biological processes. Recently, lncRNAs were found to exert both promotive and inhibitory immune functions in sepsis, thus participating in sepsis regulation. Additionally, several studies have revealed that lncRNAs are involved in sepsis-induced organ dysfunctions, including cardiovascular dysfunction, acute lung injury, and acute kidney injury. Considering the lack of effective biomarkers for early identification and specific treatment for sepsis, lncRNAs may be promising biomarkers and even targets for sepsis therapies. This review systematically highlights the recent advances regarding the roles of lncRNAs in sepsis and sheds light on their use as potential biomarkers and treatment targets for sepsis.
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Affiliation(s)
- Wei Wang
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, China
| | - Ni Yang
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, China
| | - Ri Wen
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, China
| | - Chun-Feng Liu
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, China
| | - Tie-Ning Zhang
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, China
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21
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Li J, Zhang Y, Zhang D, Li Y. The Role of Long Non-coding RNAs in Sepsis-Induced Cardiac Dysfunction. Front Cardiovasc Med 2021; 8:684348. [PMID: 34041287 PMCID: PMC8141560 DOI: 10.3389/fcvm.2021.684348] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 04/16/2021] [Indexed: 12/20/2022] Open
Abstract
Sepsis is a syndrome with life-threatening organ dysfunction induced by a dysregulated host response to infection. The heart is one of the most commonly involved organs during sepsis, and cardiac dysfunction, which is usually indicative of an extremely poor clinical outcome, is a leading cause of death in septic cases. Despite substantial improvements in the understanding of the mechanisms that contribute to the origin and responses to sepsis, the prognosis of sepsis-induced cardiac dysfunction (SICD) remains poor and its molecular pathophysiological changes are not well-characterized. The recently discovered group of mediators known as long non-coding RNAs (lncRNAs) have presented novel insights and opportunities to explore the mechanisms and development of SICD and may provide new targets for diagnosis and therapeutic strategies. LncRNAs are RNA transcripts of more than 200 nucleotides with limited or no protein-coding potential. Evidence has rapidly accumulated from numerous studies on how lncRNAs function in associated regulatory circuits during SICD. This review outlines the direct evidence of the effect of lncRNAs on SICD based on clinical trials and animal studies. Furthermore, potential functional lncRNAs in SICD that have been identified in sepsis studies are summarized with a proven biological function in research on other cardiovascular diseases.
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Affiliation(s)
- Jiawen Li
- Key Laboratory of Birth Defects and Related Diseases of Women and Children of MOE, Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Yulin Zhang
- Key Laboratory of Birth Defects and Related Diseases of Women and Children of MOE, Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Donghui Zhang
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Science, Hubei University, Wuhan, China
| | - Yifei Li
- Key Laboratory of Birth Defects and Related Diseases of Women and Children of MOE, Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu, China
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Long non-coding RNA GAS5 aggravates myocardial depression in mice with sepsis via the microRNA-449b/HMGB1 axis and the NF-κB signaling pathway. Biosci Rep 2021; 41:227999. [PMID: 33645622 PMCID: PMC8035624 DOI: 10.1042/bsr20201738] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 12/30/2020] [Accepted: 01/06/2021] [Indexed: 01/04/2023] Open
Abstract
Sepsis is a common cause of deaths of patients in intensive care unit. The study aims to figure out the role of long non-coding RNA (lncRNA) GAS5 in the myocardial depression in mice with sepsis. Cecal ligation and puncture (CLP) was applied to induce sepsis in mice, and then the heart function, myocardium structure, and the inflammatory response were evaluated. Differentially expressed lncRNAs in mice with sepsis were identified. Then gain- and loss-of-functions of GAS5 were performed in mice to evaluate its role in mouse myocardial depression. The lncRNA-associated microRNA (miRNA)-mRNA network was figured out via an integrative prediction and detection. Myocardial injury was observed by overexpression of high-mobility group box 1 (HMGB1) in septic mice with knockdown of GAS5 expression. Activity of NF-κB signaling was evaluated, and NF-κB inhibition was induced in mice with sepsis and overexpression of GAS5. Collectively, CLP resulted in myocardial depression and injury, and increased inflammation in mice. GAS5 was highly expressed in septic mice. GAS5 inhibition reduced myocardial depression, myocardial injury and inflammation responses in septic mice. GAS5 was identified to bind with miR-449b and to elevate HMGB1 expression, thus activating the NF-κB signaling. HMGB1 overexpression or NF-κB inactivation reduced the GAS5-induced myocardial depression and inflammation in septic mice. Our study suggested that GAS5 might promote sepsis-induced myocardial depression via the miR-449b/HMGB1 axis and the following NF-κB activation.
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Zhang TN, Wen R, Yang N, Liu CF. Comparative transcriptome analysis of transcripts of uncertain coding potential in septic myocardial depression. BMC Cardiovasc Disord 2021; 21:166. [PMID: 33832434 PMCID: PMC8028820 DOI: 10.1186/s12872-021-01973-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 03/30/2021] [Indexed: 12/05/2022] Open
Abstract
BACKGROUND Septic shock with myocardial depression is very common in intensive care units. However, the exact molecular mechanisms underlying sepsis-induced myocardial depression remain unclear. Whether the profiles of transcripts of uncertain coding potential (TUCPs) differ between patients with and without myocardial depression is also unknown. Our study aimed to find expression differences between groups of TUCPs and determine their potential functions in a preclinical model. METHODS We generated rat models of hypodynamic septic shock induced by lipopolysaccharide. A total of 12 rats were established and left ventricular tissue from each was collected. We performed RNA-seq to identify TUCPs in each sample. Transcripts with an corrected P value of < 0.05 were defined as differentially expressed (DE). We also performed GO terms and KEGG analysis to identify the potential functions of DE TUCPs. RESULTS A total of 4,851 TUCPs were identified in heart samples, 85 of which were expressed differently between the sepsis and control groups. Further bioinformatic analyses suggested that TUCPs play important roles in myocardial contraction, energy regulation, and metabolic processes, and are also involved in the regulation of several pathways. CONCLUSION Our results demonstrate that TUCPs both participate in and mediate the pathological process of myocardial depression. Our study improves the understanding of the basic molecular mechanisms underlying myocardial depression from a novel perspective.
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Affiliation(s)
- Tie-Ning Zhang
- Department of Pediatrics, PICU, Shengjing Hospital of China Medical University, No. 36, SanHao Street, Shenyang City, 110004, Liaoning Province, People's Republic of China
| | - Ri Wen
- Department of Pediatrics, PICU, Shengjing Hospital of China Medical University, No. 36, SanHao Street, Shenyang City, 110004, Liaoning Province, People's Republic of China
| | - Ni Yang
- Department of Pediatrics, PICU, Shengjing Hospital of China Medical University, No. 36, SanHao Street, Shenyang City, 110004, Liaoning Province, People's Republic of China
| | - Chun-Feng Liu
- Department of Pediatrics, PICU, Shengjing Hospital of China Medical University, No. 36, SanHao Street, Shenyang City, 110004, Liaoning Province, People's Republic of China.
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24
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Liu Y, Peng H, Gui F. Long noncoding plasmacytoma variant translocation 1 facilitates the surveillance of acute respiratory distress syndrome and mortality prediction in sepsis. Biomark Med 2021; 15:401-412. [PMID: 33733809 DOI: 10.2217/bmm-2020-0506] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Aim: We aimed to investigate the association of long noncoding RNA plasmacytoma variant translocation 1 (lncRNA PVT1) expression with acute respiratory distress syndrome (ARDS) risk and its prognostic value for 28-day mortality in sepsis patients. Materials & methods: LncRNA PVT1 expression from 109 sepsis patients and 100 health controls was detected. General sepsis severity was assessed using acute physiology and chronic health evaluation II score and sequential organ failure assessment score. Results: LncRNA PVT1 had an acceptable predictive value for higher ARDS risk, then was identified as an independent risk factor for sepsis ARDS; LncRNA PVT1 expression positively correlated with general disease severity in sepsis patients; LncRNA PVT1 was overexpressed in 28-day deaths compared with 28-day survivors in sepsis patients. Conclusion: LncRNA PVT1 may facilitate the surveillance of ARDS, general disease severity and the prediction of mortality in sepsis patients.
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Affiliation(s)
- Yijue Liu
- Department of Emergency, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
| | - Huan Peng
- Department of Emergency, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
| | - Feng Gui
- Department of Emergency, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
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The Importance of Epigenetics in Diagnostics and Treatment of Major Depressive Disorder. J Pers Med 2021; 11:jpm11030167. [PMID: 33804455 PMCID: PMC7999864 DOI: 10.3390/jpm11030167] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 02/09/2021] [Accepted: 02/17/2021] [Indexed: 12/15/2022] Open
Abstract
Recent studies imply that there is a tight association between epigenetics and a molecular mechanism of major depressive disorder (MDD). Epigenetic modifications, i.e., DNA methylation, post-translational histone modification and interference of microRNA (miRNA) or long non-coding RNA (lncRNA), are able to influence the severity of the disease and the outcome of the therapy. This article summarizes the most recent literature data on this topic, i.e., usage of histone deacetylases as therapeutic agents with an antidepressant effect and miRNAs or lncRNAs as markers of depression. Due to the noteworthy potential of the role of epigenetics in MDD diagnostics and therapy, we have gathered the most relevant data in this area.
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26
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Li C, Liu Y, Qin J, Liu Y, Ma L, Zhang S, Wang J, Wang S. Profiles of differentially expressed long noncoding RNAs and messenger RNAs in the myocardium of septic mice. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:199. [PMID: 33708826 PMCID: PMC7940873 DOI: 10.21037/atm-20-3830] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Background Sepsis is the primary cause of mortality in the intensive care unit (ICU), mainly due to sepsis-induced dysfunction of essential organs such as the heart and lungs. This study investigated the myocardium's epigenetic characterization from septic mice to identify potential treatment targets for septic myocardial dysfunction. Methods Cecal ligation and puncture (CLP) was used to induce sepsis in male C57BL/6 mice. Hearts were collected 24 h after surgery to determine the expression profiles of long noncoding RNAs (lncRNAs) and messenger RNAs (mRNAs) by microarray. To validate the reliability of microarray results, we randomly chose six differentially expressed lncRNAs for qRT-PCR. Functional mapping of differentially expressed mRNAs was annotated with gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses; lncRNA-mRNA co-expression network was constructed to reveal connections between lncRNAs and mRNAs. Results Microarray analysis indicated that 1,568 lncRNAs and 2,166 mRNAs were differentially expressed in the myocardium from septic mice, which was further confirmed by qRT-PCR. KEGG pathway analysis showed that numerous differentially expressed mRNAs were relevant to tumor necrosis factor (TNF) and phosphatidylinositol-3-kinase/protein kinase B (PI3K/Akt) signaling pathways. Moreover, according to the lncRNA-mRNA co-expression network constructed by the above six lncRNAs and their interacting mRNAs, the co-expression network profiles had 57 network nodes and 134 connections, including 76 positive interactions and 58 negative interactions. Conclusions In mouse hearts, sepsis resulted in differential expression of lncRNAs and mRNAs related to TNF and PI3K-Akt signaling pathways, suggesting that lncRNAs and their interacting mRNAs may participate in the pathogenesis of septic myocardial dysfunction by regulating TNF and PI3K-Akt signaling pathways.
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Affiliation(s)
- Chengbao Li
- Department of Critical Care Medicine, Shanghai Tenth People's Hospital, Tongji University, Shanghai, China
| | - Yongchao Liu
- Department of Critical Care Medicine, Shanghai Tenth People's Hospital, Tongji University, Shanghai, China
| | - Jing Qin
- Department of Critical Care Medicine, Shanghai Tenth People's Hospital, Tongji University, Shanghai, China
| | - Yuhao Liu
- Department of Critical Care Medicine, Shanghai Tenth People's Hospital, Tongji University, Shanghai, China
| | - Lijie Ma
- Department of Critical Care Medicine, Shanghai Tenth People's Hospital, Tongji University, Shanghai, China
| | - Shouqin Zhang
- Department of Critical Care Medicine, Shanghai Tenth People's Hospital, Tongji University, Shanghai, China
| | - Junjie Wang
- Department of Critical Care Medicine, Shanghai Tenth People's Hospital, Tongji University, Shanghai, China
| | - Sheng Wang
- Department of Critical Care Medicine, Shanghai Tenth People's Hospital, Tongji University, Shanghai, China
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27
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Zhang TN, Wang W, Huang XM, Gao SY. Non-Coding RNAs and Extracellular Vehicles: Their Role in the Pathogenesis of Gestational Diabetes Mellitus. Front Endocrinol (Lausanne) 2021; 12:664287. [PMID: 34093439 PMCID: PMC8173208 DOI: 10.3389/fendo.2021.664287] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 05/06/2021] [Indexed: 12/21/2022] Open
Abstract
Gestational diabetes mellitus (GDM) is defined as glucose intolerance with onset or first recognition in the second or third trimester of pregnancy. GDM has a considerable impact on health outcomes of the mother and offspring during pregnancy, delivery, and beyond. Although the exact mechanism regarding GDM remains unclear, numerous studies have suggested that non-coding RNAs, including long non-coding (lnc)RNAs, microRNAs, and circular RNAs, were involved in the pathogenesis of GDM in which they played vital regulatory roles. Additionally, several studies have revealed that extracellular vehicles also participated in the pathogenesis of GDM, highlighting their important role in this disease. Considering the lack of effective biomarkers for the early identification of and specific treatment for GDM, non-coding RNAs and extracellular vehicles may be promising biomarkers and even targets for GDM therapies. This review provides an update on our understanding of the role of non-coding RNAs and extracellular vehicles in GDM. As our understanding of the function of lncRNAs and extracellular vehicles improves, the future appears promising for their use as potential biomarkers and treatment targets for GDM in clinical practice.
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Affiliation(s)
- Tie-Ning Zhang
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China
- Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, China
| | - Wei Wang
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, China
| | - Xin-Mei Huang
- Department of Endocrinology, Shanghai Fifth People’s Hospital, Fudan University, Shanghai, China
- *Correspondence: Xin-Mei Huang, ; Shan-Yan Gao,
| | - Shan-Yan Gao
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China
- Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
- *Correspondence: Xin-Mei Huang, ; Shan-Yan Gao,
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Expression Profiling of Long Noncoding RNA and Messenger RNA in a Cecal Ligation and Puncture-Induced Colon Injury Mouse Model. Mediators Inflamm 2020; 2020:8925973. [PMID: 33204219 PMCID: PMC7657679 DOI: 10.1155/2020/8925973] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 10/12/2020] [Accepted: 10/17/2020] [Indexed: 12/25/2022] Open
Abstract
Background Emerging evidence reveals that long noncoding RNAs (lncRNAs) play important roles in the pathogenesis of sepsis. However, the detailed regulatory mechanisms of lncRNAs or whether certain lncRNA could serve as a biomarker in the septic colon remains unclear. The aim of this study was to investigate the profiles of lncRNAs and mRNAs in the septic colon through whole-transcriptome RNA sequencing and to reveal the associated regulatory mechanism. Method and Result We established a mouse model of sepsis by cecal ligation and puncture (CLP). Colon samples were collected upon CLP or sham surgery after 24 h. Whole-transcriptome RNA sequencing was performed to profile the relative expressions of lncRNAs and mRNAs. 808 lncRNAs and 1509 mRNAs were differentially found in the septic group compared with the sham group. Bioinformatics analysis including Gene Ontology (GO) analysis and Kyoto Encyclopedia of Genes and Genomes pathway analysis (KEGG) was performed to predict the potential functions of these RNAs. GO analysis showed that the altered lncRNAs were enriched and involved in multiple immune responses, which may be a response to sepsis stress. KEGG analysis indicated that upregulated lncRNAs were significantly enriched in the p53 signaling pathway, NF-κB signaling pathway, and HIF-1 signaling pathway. Downregulated lncRNAs were mostly found to be involved in tight junction, leukocyte transendothelial migration, and HIF-1 signaling pathway. Conclusion Our results indicate that these altered lncRNAs and mRNAs may have crucial roles in the pathogenesis of sepsis. This study could contribute to extending the understanding of the function of lncRNAs in sepsis, which may help in searching for new diagnostic biomarkers and therapeutic targets to treat sepsis.
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MBD2 Mediates Septic AKI through Activation of PKCη/p38MAPK and the ERK1/2 Axis. MOLECULAR THERAPY-NUCLEIC ACIDS 2020; 23:76-88. [PMID: 33335794 PMCID: PMC7723772 DOI: 10.1016/j.omtn.2020.09.028] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 09/23/2020] [Indexed: 12/15/2022]
Abstract
Our previous study demonstrated that the methyl-CpG-binding domain protein 2 (MBD2) mediates vancomycin (VAN)-induced acute kidney injury (AKI). However, the role and regulation of MBD2 in septic AKI are unknown. Herein, MBD2 was induced by lipopolysaccharide (LPS) in Boston University mouse proximal tubules (BUMPTs) and mice. For both in vitro and in vivo experiments, we showed that inhibition of MBD2 by MBD2 small interfering RNA (siRNA) and MBD2-knockout (KO) substantially improved the survival rate and attenuated both LPS and cecal ligation and puncture (CLP)-induced AKI, renal cell apoptosis, and inflammatory factor production. Global genetic expression analyses and in vitro experiments suggest that the expression of protein kinase C eta (PKCη), caused by LPS, is markedly suppressed in MBD2-KO mice and MBD2 siRNA, respectively. Mechanistically, chromatin immunoprecipitation (ChIP) analysis indicates that MBD2 directly binds to promoter region CpG islands of PKCη via suppression of promoter methylation. Furthermore, PKCη siRNA improves the survival rate and attenuates LPS-induced BUMPT cell apoptosis and inflammatory factor production via inactivation of p38 mitogen-activated protein kinase (MAPK) and extracellular signal-regulated kinase (ERK)1/2, which were further verified by PKCη siRNA treatment in CLP-induced AKI. Finally, MBD2-KO mice exhibited CLP-induced renal cell apoptosis and inflammatory factor production by inactivation of PKCη/p38MAPK and ERK1/2 signaling. Taken together, the data indicate that MBD2 mediates septic-induced AKI through the activation of PKCη/p38MAPK and the ERK1/2 axis. MBD2 represents a potential target for treatment of septic AKI.
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Overexpression of miR-150-5p Alleviates Apoptosis in Sepsis-Induced Myocardial Depression. BIOMED RESEARCH INTERNATIONAL 2020; 2020:3023186. [PMID: 32908879 PMCID: PMC7477614 DOI: 10.1155/2020/3023186] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 08/03/2020] [Accepted: 08/08/2020] [Indexed: 12/13/2022]
Abstract
Sepsis-induced myocardial depression has high mortality and is very common in intensive care units. Previous studies have found that microRNAs play an important role in regulating sepsis-induced myocardial depression. miR-150-5p is involved in many biological processes; however, the mechanism underlying its role in sepsis-induced myocardial depression is still unclear. In this study, we generated rat models of septic shock induced by lipopolysaccharide. Whole genomic RNA sequencing was performed on 12 left ventricles collected after LPS treatment to identify miRNAs. Most of the target genes of the differently expressed microRNAs were involved in apoptosis, according to Gene Ontology. We also observed apoptosis in the heart tissue and in H9C2 cardiomyocytes stimulated with lipopolysaccharide, indicating that cell apoptosis may be an important mechanism in sepsis-induced myocardial depression. Furthermore, the expression of miR-150-5p was reduced, and overexpression of miR-150-5p with mimics resulted in a decrease in apoptosis, decreased expression of cleaved caspase3 and Bax, and increased expression of Bcl-2. Additionally, after H9C2 cells were transfected with miR-150-5p mimics or an inhibitor, the expression of Akt2 decreased or increased, respectively. These findings suggest that miR-150-5p can alleviate apoptosis and may be a novel therapeutic target for sepsis-induced myocardial depression.
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Zhao LK, Zhao YB, Yu PC, Zhang PX. Metabolomics approach based on utra-performance liquid chromatography coupled to mass spectrometry with chemometrics methods for high-throughput analysis of metabolite biomarkers to explore the abnormal metabolic pathways associated with myocardial dysfunction. Biomed Chromatogr 2020; 34:e4847. [PMID: 32285481 DOI: 10.1002/bmc.4847] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 03/31/2020] [Accepted: 04/06/2020] [Indexed: 12/11/2022]
Abstract
Ultra-performance liquid chromatography/mass spectrometry-based metabolomics can been used for discovery of metabolite biomarkers to explore the metabolic pathway of diseases. Identification of metabolic pathways is key to understanding the pathogenesis and mechanism of disease. Myocardial dysfunction induced by sepsis (SMD) is a severe complication of septic shock and represents major causes of death in intensive care units; however its pathological mechanism is still not clear. In this study, ultrahigh-pressure liquid chromatography with mass spectrometry-based metabolomics with chemometrics anaylsis and multivariate pattern recognition analysis were used to detect urinary metabolic profile changes in a lipopolysaccharide-induced SMD mouse model. Multivariate statistical analysis including principal component analysis and orthogonapartial least squares discriminant analysis for the discrimination of SMD was conducted to identify potential biomarkers. A total of 19 differential metabolites were discovered by high-resolution mass spectrometry-based urinary metabolomics strategy. The altered biochemical pathways based on these metabolites showed that tyrosine metabolism, phenylalanine metabolism, ubiquinone biosynthesis and vitamin B6 metabolism were closely connected to the pathological processes of SMD. Consequently, integrated chemometric analyses of these metabolic pathways are necessary to extract information for the discovery of novel insights into the pathogenesis of disease.
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Affiliation(s)
- Ling-Kun Zhao
- School of Basic Medicine, Jiamusi University, Jiamusi, Heilongjiang, China
| | - Yun-Bo Zhao
- First Affiliated Hospital, Jiamusi University, Xiangyang District, Heilongjiang, China
| | - Peng-Cheng Yu
- College of Traditional Chinese Medicine, Jilin Agricultural University, Changchun, China
| | - Peng-Xia Zhang
- School of Basic Medicine, Jiamusi University, Jiamusi, Heilongjiang, China
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32
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Zhai J, Qi A, Zhang Y, Jiao L, Liu Y, Shou S. Bioinformatics Analysis for Multiple Gene Expression Profiles in Sepsis. Med Sci Monit 2020; 26:e920818. [PMID: 32280132 PMCID: PMC7171431 DOI: 10.12659/msm.920818] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Background This work aimed to screen key biomarkers related to sepsis progression by bioinformatics analyses. Material/Methods The microarray datasets of blood and neutrophils from patients with sepsis or septic shock were downloaded from Gene Expression Omnibus database. Then, differentially expressed genes (DEGs) from 4 groups (sepsis versus normal blood samples; septic shock versus normal blood samples; sepsis neutrophils versus normal controls and septic shock neutrophils versus controls) were respectively identified followed by functional analyses. Subsequently, protein–protein network was constructed, and key functional sub-modules were extracted. Finally, receiver operating characteristic analysis was conducted to evaluate diagnostic values of key genes. Results There were 2082 DEGs between blood samples of sepsis patients and controls, 2079 DEGs between blood samples of septic shock patients and healthy individuals, 6590 DEGs between neutrophils from sepsis and controls, and 1056 DEGs between neutrophils from septic shock patients and normal controls. Functional analysis showed that numerous DEGs were significantly enriched in ribosome-related pathway, cell cycle, and neutrophil activation involved in immune response. In addition, TRIM25 and MYC acted as hub genes in protein–protein interaction (PPI) analyses of DEGs from microarray datasets of blood samples. Moreover, MYC (AUC=0.912) and TRIM25 (AUC=0.843) had great diagnostic values for discriminating septic shock blood samples and normal controls. RNF4 was a hub gene from PPI analyses based on datasets from neutrophils and RNF4 (AUC=0.909) was capable of distinguishing neutrophil samples from septic shock samples and controls. Conclusions Our findings identified several key genes and pathways related to sepsis development.
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Affiliation(s)
- Jianhua Zhai
- Department of Emergency, Tianjin Medical University General Hospital, Tianjin, China (mainland)
| | - Anlong Qi
- Department of Emergency, Tianjin Medical University General Hospital, Tianjin, China (mainland)
| | - Yan Zhang
- Department of Emergency, Tianjin Medical University General Hospital, Tianjin, China (mainland)
| | - Lina Jiao
- Department of Emergency, Tianjin Medical University General Hospital, Tianjin, China (mainland)
| | - Yancun Liu
- Department of Emergency, Tianjin Medical University General Hospital, Tianjin, China (mainland)
| | - Songtao Shou
- Department of Emergency, Tianjin Medical University General Hospital, Tianjin, China (mainland)
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Brusletto BS, Løberg EM, Hellerud BC, Goverud IL, Berg JP, Olstad OK, Gopinathan U, Brandtzaeg P, Øvstebø R. Extensive Changes in Transcriptomic "Fingerprints" and Immunological Cells in the Large Organs of Patients Dying of Acute Septic Shock and Multiple Organ Failure Caused by Neisseria meningitidis. Front Cell Infect Microbiol 2020; 10:42. [PMID: 32154187 PMCID: PMC7045056 DOI: 10.3389/fcimb.2020.00042] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Accepted: 01/22/2020] [Indexed: 12/16/2022] Open
Abstract
Background: Patients developing meningococcal septic shock reveal levels of Neisseria meningitidis (106-108/mL) and endotoxin (101-103 EU/mL) in the circulation and organs, leading to acute cardiovascular, pulmonary and renal failure, coagulopathy and a high case fatality rate within 24 h. Objective: To investigate transcriptional profiles in heart, lungs, kidneys, liver, and spleen and immunostain key inflammatory cells and proteins in post mortem formalin-fixed, paraffin-embedded (FFPE) tissue samples from meningococcal septic shock patients. Patients and Methods: Total RNA was isolated from FFPE and fresh frozen (FF) tissue samples from five patients and two controls (acute non-infectious death). Differential expression of genes was detected using Affymetrix microarray analysis. Lung and heart tissue samples were immunostained for T-and B cells, macrophages, neutrophils and the inflammatory markers PAI-1 and MCP-1. Inflammatory mediators were quantified in lysates from FF tissues. Results: The transcriptional profiles showed a complex pattern of protein-coding and non-coding RNAs with significant regulation of pathways associated with organismal death, cell death and survival, leukocyte migration, cellular movement, proliferation of cells, cell-to-cell signaling, immune cell trafficking, and inflammatory responses in an organ-specific clustering manner. The canonical pathways including acute phase response-, EIF2-, TREM1-, IL-6-, HMBG1-, PPAR signaling, and LXR/RXR activation were associated with acute heart, pulmonary, and renal failure. Fewer genes were regulated in the liver and particularly in the spleen. The main upstream regulators were TNF, IL-1β, IL-6, RICTOR, miR-6739-3p, and CD3. Increased numbers of inflammatory cells (CD68+, MPO+, CD3+, and CD20+) were found in lungs and heart. PAI-1 inhibiting fibrinolysis and MCP-1 attracting leukocyte were found significantly present in the septic tissue samples compared to the controls. Conclusions: FFPE tissue samples can be suitable for gene expression studies as well as immunostaining of specific cells or molecules. The most pronounced gene expression patterns were found in the organs with highest levels of Neisseria meningitidis DNA. Thousands of protein-coding and non-coding RNA transcripts were altered in lungs, heart and kidneys. We identified specific biomarker panels both protein-coding and non-coding RNA transcripts, which differed from organ to organ. Involvement of many genes and pathways add up and the combined effect induce organ failure.
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Affiliation(s)
- Berit Sletbakk Brusletto
- Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway.,Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Else Marit Løberg
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway.,Department of Pathology, Oslo University Hospital, Oslo, Norway
| | | | - Ingeborg Løstegaard Goverud
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway.,Department of Pathology, Oslo University Hospital, Oslo, Norway
| | - Jens Petter Berg
- Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway.,Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | | | - Unni Gopinathan
- Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway.,Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Petter Brandtzaeg
- Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway.,Institute of Clinical Medicine, University of Oslo, Oslo, Norway.,Department of Pediatrics, Oslo University Hospital, Oslo, Norway
| | - Reidun Øvstebø
- Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway
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Zhang TN, Wang W, Yang N, Huang XM, Liu CF. Regulation of Glucose and Lipid Metabolism by Long Non-coding RNAs: Facts and Research Progress. Front Endocrinol (Lausanne) 2020; 11:457. [PMID: 32765426 PMCID: PMC7381111 DOI: 10.3389/fendo.2020.00457] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Accepted: 06/10/2020] [Indexed: 12/17/2022] Open
Abstract
Long non-coding RNAs (lncRNAs) are a type of non-coding RNA with a length that exceeds 200 nucleotides. Previous studies have shown that lncRNAs play an important role in the pathogenesis of various diseases. Research in both animal models and humans has begun to unravel the profound complexity of lncRNAs and demonstrated that lncRNAs exert direct effects on glucose and lipid metabolism both in vivo and in vitro. Such research has elucidated the regulatory role of lncRNAs in glucose and lipid metabolism in human disease. lncRNAs mediate glucose and lipid metabolism under physiological and pathological conditions and contribute to various metabolism disorders. This review provides an update on our understanding of the regulatory role of lncRNAs in glucose and lipid metabolism in various diseases. As our understanding of the function of lncRNAs improves, the future is promising for the development of new diagnostic biomarkers that utilize lncRNAs and treatments that target lncRNAs to improve clinical outcomes.
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Affiliation(s)
- Tie-Ning Zhang
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, China
- *Correspondence: Tie-Ning Zhang
| | - Wei Wang
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, China
| | - Ni Yang
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, China
| | - Xin-Mei Huang
- Department of Endocrinology, the Fifth People's Hospital of Shanghai, Fudan University, Shanghai, China
- Department of Obstetrics and Gynecology, Yale University School of Medicine, New Haven, CT, United States
- Xin-Mei Huang
| | - Chun-Feng Liu
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, China
- Chun-Feng Liu
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Liang D, Jin Y, Lin M, Xia X, Chen X, Huang A. Down-regulation of Xist and Mir-7a-5p improves LPS-induced myocardial injury. Int J Med Sci 2020; 17:2570-2577. [PMID: 33029099 PMCID: PMC7532474 DOI: 10.7150/ijms.45408] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 08/27/2020] [Indexed: 12/16/2022] Open
Abstract
Background: X-inactive specific transcript (Xist) is a lncRNA, which plays a significant role in X-chromosome inactivation, regulates cell proliferation in tumor cells, and inhibits apoptosis in acute myocardial infarction. On the other hand, miR-7a-5p is involved in cardiomyocytes injury in myocardial ischemia/reperfusion. However, their roles in LPS-induced damage remain unclear. Objectives: This study aimed at using siRNA transfection and lentivirus infection to regulate the expression of xist and miR-7a-5p, and to evaluate their effects on LPS-induced myocardial damage. Method: Mice cardiomyocytes (MCM) cells were divided into six groups, namely the control group, the LPS group, the LPS + lncRNA- group, the LPS + lncRNA+ group, the LPS + miRNA- group, and the LPS + miRNA+ group. Quantitative real-time PCR (qRT-PCR) was performed to assay for the RNA expressions of xist, miR-7a-5p, peroxisome proliferator-activated receptor-γ coactivator-1α (PGC-1α), and recombinant mitochondrial transcription factor A (Tfam) in all the groups. The ATP level was determined using the adenosine triphosphate (ATP) assay kit according to the manufacturer's instructions. Flow cytometry was performed to estimate the level of apoptosis and proliferation in cells in each group. Results: The level of xist in the myocardial cells was markedly higher in the LPS group compared with the control group; however, it was reduced in the LPS+ lncRNA- group. There was no significant difference in the expression of xist among the LPS+miRNA-, LPS+miRNA+, and LPS groups. Moreover, the expression of mir-7a-5p was significantly reduced in myocardial cells in the LPS group, and moderately reduced in the LPS+ miRNA- group, but remarkably elevated in the LPS+ miRNA+ group (P<0.05). The expression of mir-7a-5p was comparably similar in the LPS+ lncRNA- group, LPS+ lncRNA+ group, and LPS groups. Further, the levels of PGC-1a, and Tfam were determined. In the LPS group, the expression of PGC-1α was significantly reduced but elevated in the LPS+lncRNA- and LPS+ miRNA- groups (P<0.05). There was no significant difference in the level of PGC-1α among the LPS, LPS+ lncRNA+, and LPS+ miRNA+ groups. The expression of Tfam was markedly reduced in the LPS group (P < 0.05), but elevated after the suppression of xist and mir-7a-5p. The expression of Tfam was not significantly different among the LPS group, LPS+ lncRNA+ and LPS+ miRNA+ groups. Notably, overexpression of mir-7a-5p had a mild effect on the expression of Tfam in the LPS+ miRNA+ group compared with the control group. Besides, ATP expression in the LPS group was markedly reduced, but elevated after the inhibition of xist and mir-7a-5p. Suppressing the expression of xist or mir-7a-5p resulted in reduced cell apoptosis and increased cell proliferation. Conclusions: In this study, we established that down-regulation of xist and mir-7a-5p reduces apoptosis in response to LPS.
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Affiliation(s)
- Dongshi Liang
- The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Yimei Jin
- The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Miaomiao Lin
- The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Xiaojiao Xia
- The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Xiaoli Chen
- The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Airong Huang
- The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
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