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Wang S, Zhang Z, Wang J, Miao H. MiR-107 induces TNF-α secretion in endothelial cells causing tubular cell injury in patients with septic acute kidney injury. Biochem Biophys Res Commun 2017; 483:45-51. [PMID: 28063928 DOI: 10.1016/j.bbrc.2017.01.013] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 01/03/2017] [Indexed: 11/30/2022]
Abstract
Activation of endothelial cells plays a key role in septic acute kidney injury (AKI). This study investigated the role of miRNA in endothelial-induced tubular cell injury in sepsis. Circulating endothelial cells (CECs) from septic AKI, non-septic AKI, septic non-AKI patients and healthy volunteers were isolated and cultured, and HK2 cells were exposed to CEC-conditioned medium. CEC-conditioned medium prepared from septic AKI patients led to cell shrinkage, decreased E-cadherin, the release of NAG and cell apoptosis in HK2 cells. TNF-α mediated the tubular cell injury induced by CEC-conditioned medium prepared from septic AKI patients. PCR array analysis detected that miR-107 was significantly increased in the CECs of septic AKI patients. MiR-107 was verified to target the 3'UTR of Dual-specificity phosphatase 7(DUSP7). Transfection of miR-107 ASO recovered the expression of DUSP7, suppressed the phosphorylation of ERK, and decreased the secretion of TNF-α in the CECs of septic AKI patients and in the peritubular endothelial cells of septic AKI mice. The inhibition of miR-107 prevented the decrease of E-cadherin, the release of NAG and cell apoptosis in HK2 cells exposed to CEC-conditioned medium prepared from septic AKI patients, and preserved the normal renal morphology and decreased the serum creatinine level in septic AKI mice. In conclusion, our study suggests that the increased miR-107 induces TNF-α secretion by targeting DUSP7 in endothelial cells, which may directly cause tubular cell injury in septic AKI.
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Affiliation(s)
- Shanshan Wang
- Department of Emergency, Children's Hospital of Nanjing Medical University, Nanjing, 210008, China
| | - Zengdi Zhang
- Department of Emergency, Children's Hospital of Nanjing Medical University, Nanjing, 210008, China
| | - Jun Wang
- Department of Emergency, Children's Hospital of Nanjing Medical University, Nanjing, 210008, China
| | - Hongjun Miao
- Department of Emergency, Children's Hospital of Nanjing Medical University, Nanjing, 210008, China.
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53
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Ho J, Chan H, Wong SH, Wang MHT, Yu J, Xiao Z, Liu X, Choi G, Leung CCH, Wong WT, Li Z, Gin T, Chan MTV, Wu WKK. The involvement of regulatory non-coding RNAs in sepsis: a systematic review. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2016; 20:383. [PMID: 27890015 PMCID: PMC5125038 DOI: 10.1186/s13054-016-1555-3] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Accepted: 10/31/2016] [Indexed: 12/13/2022]
Abstract
Background Sepsis coincides with altered gene expression in different tissues. Accumulating evidence has suggested that microRNAs, long non-coding RNAs, and circular RNAs are important molecules involved in the crosstalk with various pathways pertinent to innate immunity, mitochondrial functions, and apoptosis. Methods We searched articles indexed in PubMed (MEDLINE), EMBASE and Europe PubMed Central databases using the Medical Subject Heading (MeSH) or Title/Abstract words (“microRNA”, “long non-coding RNA”, “circular RNA”, “sepsis” and/or “septic shock”) from inception to Sep 2016. Studies investigating the role of host-derived microRNA, long non-coding RNA, and circular RNA in the pathogenesis of and as biomarkers or therapeutics in sepsis were included. Data were extracted in terms of the role of non-coding RNAs in pathogenesis, and their applicability for use as biomarkers or therapeutics in sepsis. Two independent researchers assessed the quality of studies using a modified guideline from the Systematic Review Center for Laboratory animal Experimentation (SYRCLE), a tool based on the Cochrane Collaboration Risk of Bias tool. Results Observational studies revealed dysregulation of non-coding RNAs in septic patients. Experimental studies confirmed their crosstalk with JNK/NF-κB and other cellular pathways pertinent to innate immunity, mitochondrial function, and apoptosis. Of the included studies, the SYRCLE scores ranged from 3 to 7 (average score of 4.55). This suggests a moderate risk of bias. Of the 10 articles investigating non-coding RNAs as biomarkers, none of them included a validation cohort. Selective reporting of sensitivity, specificity, and receiver operating curve was common. Conclusions Although non-coding RNAs appear to be good candidates as biomarkers and therapeutics for sepsis, their differential expression across tissues complicated the process. Further investigation on organ-specific delivery of these regulatory molecules may be useful. Electronic supplementary material The online version of this article (doi:10.1186/s13054-016-1555-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Jeffery Ho
- Department of Anesthesia and Intensive Care, The Chinese University of Hong Kong, Shatin, Hong Kong, Hong Kong, Special Administrative Region of China
| | - Hung Chan
- Department of Anesthesia and Intensive Care, The Chinese University of Hong Kong, Shatin, Hong Kong, Hong Kong, Special Administrative Region of China
| | - Sunny H Wong
- State Key Laboratory of Digestive Disease, LKS Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, Hong Kong, Special Administrative Region of China. .,Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Shatin, Hong Kong, Hong Kong, Special Administrative Region of China.
| | - Maggie H T Wang
- The Jockey Club School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong, Hong Kong, Special Administrative Region of China
| | - Jun Yu
- State Key Laboratory of Digestive Disease, LKS Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, Hong Kong, Special Administrative Region of China.,Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Shatin, Hong Kong, Hong Kong, Special Administrative Region of China
| | - Zhangang Xiao
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, 646000, Sichuan, People's Republic of China
| | - Xiaodong Liu
- Department of Anesthesia and Intensive Care, The Chinese University of Hong Kong, Shatin, Hong Kong, Hong Kong, Special Administrative Region of China
| | - Gordon Choi
- Department of Anesthesia and Intensive Care, The Chinese University of Hong Kong, Shatin, Hong Kong, Hong Kong, Special Administrative Region of China
| | - Czarina C H Leung
- Department of Anesthesia and Intensive Care, The Chinese University of Hong Kong, Shatin, Hong Kong, Hong Kong, Special Administrative Region of China
| | - Wai T Wong
- Department of Anesthesia and Intensive Care, The Chinese University of Hong Kong, Shatin, Hong Kong, Hong Kong, Special Administrative Region of China
| | - Zheng Li
- Department of Orthopedics Surgery Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, People's Republic of China
| | - Tony Gin
- Department of Anesthesia and Intensive Care, The Chinese University of Hong Kong, Shatin, Hong Kong, Hong Kong, Special Administrative Region of China
| | - Matthew T V Chan
- Department of Anesthesia and Intensive Care, The Chinese University of Hong Kong, Shatin, Hong Kong, Hong Kong, Special Administrative Region of China.
| | - William K K Wu
- Department of Anesthesia and Intensive Care, The Chinese University of Hong Kong, Shatin, Hong Kong, Hong Kong, Special Administrative Region of China. .,State Key Laboratory of Digestive Disease, LKS Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, Hong Kong, Special Administrative Region of China.
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54
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Cellular and viral microRNAs in sepsis: mechanisms of action and clinical applications. Cell Death Differ 2016; 23:1906-1918. [PMID: 27740627 DOI: 10.1038/cdd.2016.94] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2015] [Revised: 07/30/2016] [Accepted: 08/02/2016] [Indexed: 12/17/2022] Open
Abstract
Regardless of its etiology, once septic shock is established, survival rates drop by 7.6% for every hour antibiotic therapy is delayed. The early identification of the cause of infection and prognostic stratification of patients with sepsis are therefore important clinical priorities. Biomarkers are potentially valuable clinical tools in this context, but to date, no single biomarker has been shown to perform adequately. Hence, in an effort to discover novel diagnostic and prognostic markers in sepsis, new genomic approaches have been employed. As a result, a number of small regulatory molecules called microRNAs (miRNAs) have been identified as key regulators of the inflammatory response. Although deregulated miRNA expression is increasingly well described, the pathophysiological roles of these molecules in sepsis have yet to be fully defined. Moreover, non-human miRNAs, including two Kaposi Sarcoma herpesvirus-encoded miRNAs, are implicated in sepsis and may drive enhanced secretion of pro-inflammatory and anti-inflammatory cytokines exacerbating sepsis. A better understanding of the mechanism of action of both cellular and viral miRNAs, and their interactions with immune and inflammatory cascades, may therefore identify novel therapeutic targets in sepsis and make biomarker-guided therapy a realistic prospect.
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55
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Ma H, Wang X, Ha T, Gao M, Liu L, Wang R, Yu K, Kalbfleisch JH, Kao RL, Williams DL, Li C. MicroRNA-125b Prevents Cardiac Dysfunction in Polymicrobial Sepsis by Targeting TRAF6-Mediated Nuclear Factor κB Activation and p53-Mediated Apoptotic Signaling. J Infect Dis 2016; 214:1773-1783. [PMID: 27683819 DOI: 10.1093/infdis/jiw449] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Accepted: 09/19/2016] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND This study examined the effect of microRNA-125b (miR-125b) on sepsis-induced cardiac dysfunction. METHODS Mouse hearts were transfected with lentivirus expressing miR-125b (LmiR-125b) 7 days before cecal ligation and puncture (CLP)-induced sepsis. Cardiac function was examined by echocardiography before and 6 hours after CLP (n = 6/group). Survival was monitored following CLP-induced sepsis (n = 12/group). RESULTS LmiR-125b transfection significantly attenuated cardiac dysfunction due to CLP-induced sepsis. Fractional shortening and ejection fraction values were significantly (P < .05) higher in the LmiR-125b-treated CLP group than in the untreated CLP group. Survival outcome in LmiR-125b-transfected septic mice was markedly improved, compared with mice with CLP-induced sepsis. Transfection of LmiR-125b into the heart significantly suppressed the expression of ICAM-1 and VCAM-1, decreased the accumulation of macrophages and neutrophils in the myocardium, and decreased serum levels of tumor necrosis factor α and interleukin 1β by targeting tumor necrosis factor receptor-associated factor 6 (TRAF6)-mediated nuclear factor κB (NF-κB) activation. In addition, sepsis-induced myocardial apoptosis was markedly attenuated by LmiR-125b transfection through suppression of p53, Bax, and Bak1 expression. In vitro transfection of endothelial cells with miR-125b mimics attenuate LPS-induced ICAM-1 and VCAM-1 expression by suppressing TRAF6 and NF-κB activation. CONCLUSIONS Increased myocardial miR-125b expression attenuates sepsis-induced cardiac dysfunction and improves survival. miR-125b may be a target for septic cardiomyopathy.
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Affiliation(s)
- He Ma
- Department of Surgery.,Department of Geriatrics, First Affiliated Hospital of Nanjing Medical University
| | | | - Tuanzhu Ha
- Department of Surgery.,Center of Excellence in Inflammation, Infectious Disease, and Immunity, James H. Quillen College of Medicine, East Tennessee State University, Johnson City
| | | | - Li Liu
- Department of Geriatrics, First Affiliated Hospital of Nanjing Medical University
| | - Ruitao Wang
- Department of Internal Medicine, Third Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Kaijiang Yu
- Department of Internal Medicine, Third Affiliated Hospital of Harbin Medical University, Harbin, China
| | - John H Kalbfleisch
- Department of Biometry and Medical Computing.,Center of Excellence in Inflammation, Infectious Disease, and Immunity, James H. Quillen College of Medicine, East Tennessee State University, Johnson City
| | - Race L Kao
- Department of Surgery.,Center of Excellence in Inflammation, Infectious Disease, and Immunity, James H. Quillen College of Medicine, East Tennessee State University, Johnson City
| | - David L Williams
- Department of Surgery.,Center of Excellence in Inflammation, Infectious Disease, and Immunity, James H. Quillen College of Medicine, East Tennessee State University, Johnson City
| | - Chuanfu Li
- Department of Surgery.,Center of Excellence in Inflammation, Infectious Disease, and Immunity, James H. Quillen College of Medicine, East Tennessee State University, Johnson City
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56
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Liu B, Tian M, Guo Q, Ma L, Zhou D, Shen B, Sun Y, Zhu C. MiR-932 Regulates Pyrethroid Resistance in Culex pipiens pallens (Diptera: Culicidae). JOURNAL OF MEDICAL ENTOMOLOGY 2016; 53:1205-1210. [PMID: 27313166 PMCID: PMC5013817 DOI: 10.1093/jme/tjw083] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Accepted: 05/06/2016] [Indexed: 05/12/2023]
Abstract
MicroRNAs (miRNAs) play notable role in regulation of gene expression at the posttranscription level, and have been involved in many biological processes, including insecticide resistance. In this study, we investigated the role of miR-932 in the molecular mechanisms of pyrethroid resistance in Culex pipiens pallens (L.). Overexpression of miR-932 in the DS-strain made the mosquitoes more resistant to deltamethrin, while inhibiting the expression of miR-932 in the DR-strain made the mosquitoes more sensitive to deltamethrin. Further, we also identified CpCPR5 as a target gene of miR-932. Sustained overexpression of miR-932 resulted in repression of CpCPR5, and that knockdown of miR-932 increased CpCPR5 expression. In addition, knockdown of CpCPR5 decreased the sensitivity of mosquitoes to deltamethrin in the DS-strain. In conclusion, our study finds a molecular link between miR-932 and CpCPR5 and provides a novel insight into the mechanism of insecticide resistance.
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Affiliation(s)
- Bingqian Liu
- Department of Pathogen Biology, Nanjing Medical University, 140 Hanzhong Rd., Nanjing, Jiangsu 210029, China (; ; ; ; ; ; ; )
| | - Mengmeng Tian
- Department of Pathogen Biology, Nanjing Medical University, 140 Hanzhong Rd., Nanjing, Jiangsu 210029, China (; ; ; ; ; ; ; )
| | - Qin Guo
- Department of Pathogen Biology, Nanjing Medical University, 140 Hanzhong Rd., Nanjing, Jiangsu 210029, China (; ; ; ; ; ; ; )
| | - Lei Ma
- Department of Pathogen Biology, Nanjing Medical University, 140 Hanzhong Rd., Nanjing, Jiangsu 210029, China (; ; ; ; ; ; ; )
| | - Dan Zhou
- Department of Pathogen Biology, Nanjing Medical University, 140 Hanzhong Rd., Nanjing, Jiangsu 210029, China (; ; ; ; ; ; ; )
| | - Bo Shen
- Department of Pathogen Biology, Nanjing Medical University, 140 Hanzhong Rd., Nanjing, Jiangsu 210029, China (; ; ; ; ; ; ; )
| | - Yan Sun
- Department of Pathogen Biology, Nanjing Medical University, 140 Hanzhong Rd., Nanjing, Jiangsu 210029, China (; ; ; ; ; ; ; )
| | - Changliang Zhu
- Department of Pathogen Biology, Nanjing Medical University, 140 Hanzhong Rd., Nanjing, Jiangsu 210029, China (; ; ; ; ; ; ; )
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