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Yan W, Yan Y, Luo X, Dong Y, Liang G, Miao H, Huang Z, Jiang H. Lipopolysaccharide (LPS)-induced inflammation in RAW264.7 cells is inhibited by microRNA-494-3p via targeting lipoprotein-associated phospholipase A2. Eur J Trauma Emerg Surg 2024:10.1007/s00068-024-02588-7. [PMID: 38955820 DOI: 10.1007/s00068-024-02588-7] [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: 09/26/2023] [Accepted: 06/14/2024] [Indexed: 07/04/2024]
Abstract
BACKGROUND Gram-negative bacterial lipopolysaccharide (LPS) is a major component of inflammation and plays a key role in the pathogenesis of sepsis. According to our previous study, the expression of lipoprotein-associated phospholipase A2 (Lp-PLA2) is significantly upregulated in septic patients and is positively correlated with the severity of this disease. Herein, we investigated the potential roles of Lp-PLA2-targeting microRNAs (miRNAs) in LPS-induced inflammation in murine mononuclear macrophages (RAW264.7 cells). METHODS In LPS-stimulated RAW264.7 cells, Lp-PLA2 was confirmed to be expressed during the inflammatory response. The function of microRNA-494-3p (miR-494-3p) in the LPS-induced inflammatory response of RAW264.7 cells was determined by the transfection of a miR-494-3p mimic or inhibitor in vitro. RESULTS Compared to the control, LPS induced a significant increase in the Lp-PLA2 level, which was accompanied by the release of inflammatory mediators. The bioinformatics and qRT‒PCR results indicated that the miR-494-3p level was associated with Lp-PLA2 expression in the LPS-induced inflammatory response of RAW264.7 cells. Dual-luciferase reporter assay results confirmed that the 3'-UTR of Lp-PLA2 was a functional target of microRNA-494-3p. During the LPS-induced inflammatory response of RAW264.7 cells, targeting Lp-PLA2 and transfecting miR-494-3p mimics significantly upregulated the expression of miR-494-3p, leading to a reduction in the release of inflammatory factors and conferring a protective effect on LPS-stimulated RAW264.7 cells. CONCLUSION By targeting Lp-PLA2, miR-494-3p suppresses Lp-PLA2 secretion, thereby alleviating LPS-induced inflammation, which indicates that miR-494-3p may be a potential target for sepsis treatment.
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Affiliation(s)
- Wenxiao Yan
- Department of Emergency Medicine, Affiliated Hospital of Nantong University, Nantong, China
- Medical School of Nantong University, Nantong University, Nantong, China
| | - Yan Yan
- Department of Emergency Medicine, Affiliated Hospital of Nantong University, Nantong, China
- Medical School of Nantong University, Nantong University, Nantong, China
- Department of Intensive Care Unit, Second Affiliated Hospital of Jiaxing University, Jiaxing, China
| | - Xinye Luo
- Department of Emergency Medicine, Affiliated Hospital of Nantong University, Nantong, China
- Medical School of Nantong University, Nantong University, Nantong, China
| | - Yansong Dong
- Department of Emergency Medicine, Affiliated Hospital of Nantong University, Nantong, China
- Medical School of Nantong University, Nantong University, Nantong, China
| | - Guiwen Liang
- Department of Emergency Medicine, Affiliated Hospital of Nantong University, Nantong, China
- Medical School of Nantong University, Nantong University, Nantong, China
| | - Hua Miao
- Medical School of Nantong University, Nantong University, Nantong, China.
- Department of Emergency Medicine, Rudong County People's Hospital, Nantong, China.
| | - Zhongwei Huang
- Department of Emergency Medicine, Affiliated Hospital of Nantong University, Nantong, China.
- Medical School of Nantong University, Nantong University, Nantong, China.
| | - Haiyan Jiang
- Department of Emergency Medicine, Affiliated Hospital of Nantong University, Nantong, China.
- Medical School of Nantong University, Nantong University, Nantong, China.
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2
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Taruselli MT, Qayum AA, Abebayehu D, Caslin HL, Dailey JM, Kotha A, Burchett JR, Kee SA, Maldonado TD, Ren B, Chao W, Zou L, Haque TT, Straus D, Ryan JJ. IL-33 Induces Cellular and Exosomal miR-146a Expression as a Feedback Inhibitor of Mast Cell Function. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2024; 212:1277-1286. [PMID: 38381001 PMCID: PMC10984763 DOI: 10.4049/jimmunol.2200916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 01/30/2024] [Indexed: 02/22/2024]
Abstract
IL-33 is an inflammatory cytokine that promotes allergic disease by activating group 2 innate lymphoid cells, Th2 cells, and mast cells. IL-33 is increased in asthmatics, and its blockade suppresses asthma-like inflammation in mouse models. Homeostatic control of IL-33 signaling is poorly understood. Because the IL-33 receptor, ST2, acts via cascades used by the TLR family, similar feedback mechanisms may exist. MicroRNA (miR)-146a is induced by LPS-mediated TLR4 signaling and serves as a feedback inhibitor. Therefore, we explored whether miR-146a has a role in IL-33 signaling. IL-33 induced cellular and exosomal miR-146a expression in mouse bone marrow-derived mast cells (BMMCs). BMMCs transfected with a miR-146a antagonist or derived from miR-146a knockout mice showed enhanced cytokine expression in response to IL-33, suggesting that miR-146a is a negative regulator of IL-33-ST2 signaling. In vivo, miR-146a expression in plasma exosomes was elevated after i.p. injection of IL-33 in wild-type but not mast cell-deficient KitW-sh/W-sh mice. Finally, KitW-sh/W-sh mice acutely reconstituted with miR-146a knockout BMMCs prior to IL-33 challenge had elevated plasma IL-6 levels compared with littermates receiving wild-type BMMCs. These results support the hypothesis that miR-146a is a feedback regulator of IL-33-mediated mast cell functions associated with allergic disease.
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Affiliation(s)
| | - Amina Abdul Qayum
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
| | - Daniel Abebayehu
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
| | - Heather L. Caslin
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
| | - Jordan M. Dailey
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
| | - Aditya Kotha
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
| | - Jason R. Burchett
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
| | - Sydney A. Kee
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
| | - Tania D. Maldonado
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
| | - Boyang Ren
- Center for Shock, Trauma and Anesthesiology Research, University of Maryland School of Medicine, HSF2 G-S003B, 20 Penn Street, Baltimore, 21201
| | - Wei Chao
- Center for Shock, Trauma and Anesthesiology Research, University of Maryland School of Medicine, HSF2 G-S003B, 20 Penn Street, Baltimore, 21201
| | - Lin Zou
- Center for Shock, Trauma and Anesthesiology Research, University of Maryland School of Medicine, HSF2 G-S003B, 20 Penn Street, Baltimore, 21201
| | - Tamara T. Haque
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
| | - David Straus
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
| | - John J. Ryan
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
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3
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Williams B, Zou L, Pittet JF, Chao W. Sepsis-Induced Coagulopathy: A Comprehensive Narrative Review of Pathophysiology, Clinical Presentation, Diagnosis, and Management Strategies. Anesth Analg 2024; 138:696-711. [PMID: 38324297 PMCID: PMC10916756 DOI: 10.1213/ane.0000000000006888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/28/2023] [Indexed: 02/08/2024]
Abstract
Physiological hemostasis is a balance between pro- and anticoagulant pathways, and in sepsis, this equilibrium is disturbed, resulting in systemic thrombin generation, impaired anticoagulant activity, and suppression of fibrinolysis, a condition termed sepsis-induced coagulopathy (SIC). SIC is a common complication, being present in 24% of patients with sepsis and 66% of patients with septic shock, and is often associated with poor clinical outcomes and high mortality. 1 , 2 Recent preclinical and clinical studies have generated new insights into the molecular pathogenesis of SIC. In this article, we analyze the complex pathophysiology of SIC with a focus on the role of procoagulant innate immune signaling in hemostatic activation--tissue factor production, thrombin generation, endotheliopathy, and impaired antithrombotic functions. We also review clinical presentations of SIC, the diagnostic scoring system and laboratory tests, the current standard of care, and clinical trials evaluating the efficacies of anticoagulant therapies.
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Affiliation(s)
- Brittney Williams
- From the Division of Cardiothoracic Anesthesia, Department of Anesthesiology, University of Maryland School of Medicine, Baltimore, Maryland
- Translational Research Program, Department of Anesthesiology & Center for Shock, Trauma and Anesthesiology Research (STAR), University of Maryland School of Medicine, Baltimore, Maryland
| | - Lin Zou
- Translational Research Program, Department of Anesthesiology & Center for Shock, Trauma and Anesthesiology Research (STAR), University of Maryland School of Medicine, Baltimore, Maryland
| | - Jean-Francois Pittet
- Division of Critical Care, Department of Anesthesiology and Perioperative Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Wei Chao
- Translational Research Program, Department of Anesthesiology & Center for Shock, Trauma and Anesthesiology Research (STAR), University of Maryland School of Medicine, Baltimore, Maryland
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Luo J, Zhao S, Ren Q, Guan G, Luo J, Yin H. Role of Recognition MicroRNAs in Hemaphysalis longicornis and Theileria orientalis Interactions. Pathogens 2024; 13:288. [PMID: 38668243 PMCID: PMC11054001 DOI: 10.3390/pathogens13040288] [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: 01/31/2024] [Revised: 03/20/2024] [Accepted: 03/27/2024] [Indexed: 04/29/2024] Open
Abstract
Ticks are an important type of pathogen transmission vector, and pathogens not only cause serious harm to livestock but can also infect humans. Because of the roles that ticks play in disease transmission, reducing tick pathogen infectivity has become increasingly important and requires the identification and characterization of these pathogens and their interaction mechanisms. In this study, we determined the miRNA expression profile of Hemaphysalis longicornis infected with Theileria orientalis, predicted the target genes of miRNAs involved in this infection process, and investigated the role of miRNA target recognition during host-pathogen interactions. The results showed that longipain is a target gene of miR-5309, which was differentially expressed at different developmental stages and in various tissues in the control group. However, the miR-5309 level was reduced in the infection group. Analysis of the interaction between miRNA and the target gene showed that miR-5309 negatively regulated the expression of the longipain protein during the infection of H. longicornis with T. orientalis. To verify this inference, we compared longipain with the blocking agent orientalis. In this study, the expression of longipain was upregulated by the inhibition of miR-5309 in ticks, and the ability of the antibody produced by the tick-derived protein to attenuate T. orientalis infection was verified through animal immunity and antigen-antibody binding tests. The results showed that expression of the longipain + GST fusion protein caused the cattle to produce antibodies that could be successfully captured by ticks, and cellular immunity was subsequently activated in the ticks, resulting in a subtractive effect on T. orientalis infection. This research provides ideas for the control of ticks and tickborne diseases and a research basis for studying the mechanism underlying the interaction between ticks and pathogens.
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Affiliation(s)
- Jin Luo
- State Key Laboratory for Animal Disease Control and Prevention, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Science, Xujiaping 1, Lanzhou 730046, China; (S.Z.); (Q.R.); (G.G.); (J.L.)
| | - Shuaiyang Zhao
- State Key Laboratory for Animal Disease Control and Prevention, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Science, Xujiaping 1, Lanzhou 730046, China; (S.Z.); (Q.R.); (G.G.); (J.L.)
| | - Qiaoyun Ren
- State Key Laboratory for Animal Disease Control and Prevention, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Science, Xujiaping 1, Lanzhou 730046, China; (S.Z.); (Q.R.); (G.G.); (J.L.)
| | - Guiquan Guan
- State Key Laboratory for Animal Disease Control and Prevention, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Science, Xujiaping 1, Lanzhou 730046, China; (S.Z.); (Q.R.); (G.G.); (J.L.)
| | - Jianxun Luo
- State Key Laboratory for Animal Disease Control and Prevention, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Science, Xujiaping 1, Lanzhou 730046, China; (S.Z.); (Q.R.); (G.G.); (J.L.)
| | - Hong Yin
- State Key Laboratory for Animal Disease Control and Prevention, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Science, Xujiaping 1, Lanzhou 730046, China; (S.Z.); (Q.R.); (G.G.); (J.L.)
- Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, Yangzhou 225009, China
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Hollis R, Aziz M, Jacob A, Wang P. Harnessing Extracellular microRNAs for Diagnostics and Therapeutics in Acute Systemic Inflammation. Cells 2024; 13:545. [PMID: 38534389 DOI: 10.3390/cells13060545] [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: 01/16/2024] [Revised: 03/05/2024] [Accepted: 03/16/2024] [Indexed: 03/28/2024] Open
Abstract
Micro-ribonucleic acids (miRNAs) are small sequences of genetic materials that are primarily transcribed from the intronic regions of deoxyribonucleic acid (DNAs), and they are pivotal in regulating messenger RNA (mRNA) expression. miRNAs were first discovered to regulate mRNAs of the same cell in which they were transcribed. Recent studies have unveiled their ability to traverse cells, either encapsulated in vesicles or freely bound to proteins, influencing distant recipient cells. Activities of extracellular miRNAs have been observed during acute inflammation in clinically relevant pathologies, such as sepsis, shock, trauma, and ischemia/reperfusion (I/R) injuries. This review comprehensively explores the activity of miRNAs during acute inflammation as well as the mechanisms of their extracellular transport and activity. Evaluating the potential of extracellular miRNAs as diagnostic biomarkers and therapeutic targets in acute inflammation represents a critical aspect of this review. Finally, this review concludes with novel concepts of miRNA activity in the context of alleviating inflammation, delivering potential future directions to advance the field of miRNA therapeutics.
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Affiliation(s)
- Russell Hollis
- Center for Immunology and Inflammation, The Feinstein Institutes for Medical Research, Manhasset, NY 11030, USA
- Department of Surgery, Zucker School of Medicine, Hempstead, NY 11549, USA
| | - Monowar Aziz
- Center for Immunology and Inflammation, The Feinstein Institutes for Medical Research, Manhasset, NY 11030, USA
- Department of Surgery, Zucker School of Medicine, Hempstead, NY 11549, USA
- Department of Molecular Medicine, Zucker School of Medicine, Hempstead, NY 11549, USA
| | - Asha Jacob
- Center for Immunology and Inflammation, The Feinstein Institutes for Medical Research, Manhasset, NY 11030, USA
- Department of Surgery, Zucker School of Medicine, Hempstead, NY 11549, USA
- Department of Molecular Medicine, Zucker School of Medicine, Hempstead, NY 11549, USA
| | - Ping Wang
- Center for Immunology and Inflammation, The Feinstein Institutes for Medical Research, Manhasset, NY 11030, USA
- Department of Surgery, Zucker School of Medicine, Hempstead, NY 11549, USA
- Department of Molecular Medicine, Zucker School of Medicine, Hempstead, NY 11549, USA
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6
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Zhao Y, Lu C, Zhu R, Hu X. Study on identification of a three-microRNA panel in serum for diagnosing neonatal early onset sepsis. J Matern Fetal Neonatal Med 2023; 36:2280527. [PMID: 37968923 DOI: 10.1080/14767058.2023.2280527] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 11/02/2023] [Indexed: 11/17/2023]
Abstract
BACKGROUND Comparing with other diseases, early onset sepsis (EOS) is a global health concern in neonatal period for its high morbidity and mortality rates. In recent years, many studies have contributed to the figure out the expression patterns of circulating micro-RNAs (miRNAs) in different diseases and progressions, which could function as diagnostic biomarkers for EOS. The purpose of this study was to analyze the expression patterns of selected miRNAs and evaluate their diagnostic value for early detection and treatment. METHODS This was a prospective cross-sectional study conducted from 1 July 2021 to 30 June 2022. We collected surplus peripheral blood and demographic statistics of septic neonates and non-infected neonates during the first 24 h after delivery and obtained 11 candidate miRNAs by literature screening. First, we extracted the candidate miRNAs from the serum of selected neonates and analyzed their expression levels, and then the receiver operating characteristic (ROC) curve was used to select the differentially expressed miRNAs. We analyzed their sensitivity and specificity and obtained the best diagnostic panel. Finally, with the help of differentially expressed miRNAs, we performed gene ontology (GO) enrichment and protein-protein interaction (PPI) analyses by their target genes. RESULTS In patients with EOS, three miRNAs (mir-223-3p, mir-15a-5p, and mir-17-5p) in serum were significantly downregulated, and mir-146a-5p, mir-1-3p, and mir-16-5p were upregulated. The diagnostic value of these miRNAs (miR-15a-5p, AUC = 0.67; miR-223-3p, AUC = 0.72; miR-16-5p, AUC = 0.68; miR-17-5p, AUC = 0.70; miR-1-3p, AUC = 0.69; miR-146a-5p, AUC = 0.72) was moderate, and the diagnostic panel constructed by miR-15a-5p, miR-223-3p, and miR-16-5p possessed a comparatively higher diagnostic value (AUC = 0.85, sensitivity: 74.6%, specificity: 86%), indicating that their combined application may be a promising biomarker for clinical diagnosis of EOS. According to GO enrichment analysis, most proteins encoded by target genes were located in the cytosol as for cellular component (CC), for molecular function (MF), most proteins acted as regulators in protein binding, and for biological process (BP). Most genes function in positive or negative regulation of transcription from RNA polymerase II promoter, and the top 10 hub genes were CDKN1A, YAP1, CCNE1, CCND1, CKK6, ERBB4, CHEK1, DICER1, VEGFA, and APP by rank degree after PPI construction. CONCLUSIONS The three-miRNA panels (miR-15a-5p, miR-223-3p, and miR-16-5p) may be a novel noninvasive biological marker for EOS screening.
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Affiliation(s)
- Yihong Zhao
- Pediatrics Department, Peking University Shenzhen Hospital, Shenzhen, China
- Shantou University Medical College, Shantou, China
| | - Chong Lu
- Pediatrics Department, Peking University Shenzhen Hospital, Shenzhen, China
- Anhui Medical University, Hefei, China
| | - Ruqin Zhu
- Pediatrics Department, Peking University Shenzhen Hospital, Shenzhen, China
- Anhui Medical University, Hefei, China
| | - Xiaoyan Hu
- Pediatrics Department, Peking University Shenzhen Hospital, Shenzhen, China
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Janosevic D, De Luca T, Ferreira RM, Gisch DL, Hato T, Luo J, Yang Y, Hodgin JB, Dagher PC, Eadon MT. miRNA and mRNA Signatures in Human Acute Kidney Injury Tissue. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.09.11.557054. [PMID: 37745313 PMCID: PMC10515816 DOI: 10.1101/2023.09.11.557054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/26/2023]
Abstract
Acute kidney injury (AKI) is an important contributor to the development of chronic kidney disease (CKD). There is a need to understand molecular mediators that drive either recovery or progression to CKD. In particular, the role of miRNA and its regulatory role in AKI is poorly understood. We performed miRNA and mRNA sequencing on biobanked human kidney tissues obtained in the routine clinical care of patients with the diagnoses of AKI and minimal change disease (MCD), in addition to nephrectomized (Ref) tissue from individuals without known kidney disease. Transcriptomic analysis of mRNA revealed that Ref tissues exhibited a similar injury signature to AKI, not identified in MCD samples. The transcriptomic signature of human AKI was enriched with genes in pathways involved in cell adhesion and epithelial-to-mesenchymal transition (e.g., CDH6, ITGB6, CDKN1A ). miRNA DE analysis revealed upregulation of miRNA associated with immune cell recruitment and inflammation (e.g., miR-146a, miR-155, miR-142, miR-122). These miRNA (i.e., miR-122, miR-146) are also associated with downregulation of mRNA such as DDR2 and IGFBP6 , respectively. These findings suggest integrated interactions between miRNAs and target mRNAs in AKI-related processes such as inflammation, immune cell activation and epithelial-to-mesenchymal transition. These data contribute several novel findings when describing the epigenetic regulation of AKI by miRNA, and also underscores the importance of utilizing an appropriate reference control tissue to understand canonical pathway alterations in AKI.
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McCormack NM, Calabrese KA, Sun CM, Tully CB, Heier CR, Fiorillo AA. Deletion of miR-146a enhances therapeutic protein restoration in model of dystrophin exon skipping. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.05.09.540042. [PMID: 37214870 PMCID: PMC10197665 DOI: 10.1101/2023.05.09.540042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Duchenne muscular dystrophy (DMD) is a progressive muscle disease caused by the absence of dystrophin protein. One current DMD therapeutic strategy, exon skipping, produces a truncated dystrophin isoform using phosphorodiamidate morpholino oligomers (PMOs). However, the potential of exon skipping therapeutics has not been fully realized as increases in dystrophin protein have been minimal in clinical trials. Here, we investigate how miR-146a-5p, which is highly elevated in dystrophic muscle, impacts dystrophin protein levels. We find inflammation strongly induces miR-146a in dystrophic, but not wild-type myotubes. Bioinformatics analysis reveals that the dystrophin 3'UTR harbors a miR-146a binding site, and subsequent luciferase assays demonstrate miR-146a binding inhibits dystrophin translation. In dystrophin-null mdx52 mice, co-injection of miR-146a reduces dystrophin restoration by an exon 51 skipping PMO. To directly investigate how miR-146a impacts therapeutic dystrophin rescue, we generated mdx52 with body-wide miR-146a deletion (146aX). Administration of an exon skipping PMO via intramuscular or intravenous injection markedly increases dystrophin protein levels in 146aX versus mdx52 muscles; skipped dystrophin transcript levels are unchanged, suggesting a post-transcriptional mechanism-of-action. Together, these data show that miR-146a expression opposes therapeutic dystrophin restoration, suggesting miR-146a inhibition warrants further research as a potential DMD exon skipping co-therapy.
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Affiliation(s)
- Nikki M. McCormack
- Center for Genetic Medicine Research, Children’s National Hospital, Washington, District of Columbia, USA
| | - Kelsey A. Calabrese
- Center for Genetic Medicine Research, Children’s National Hospital, Washington, District of Columbia, USA
| | - Christina M. Sun
- Center for Genetic Medicine Research, Children’s National Hospital, Washington, District of Columbia, USA
| | - Christopher B. Tully
- Center for Genetic Medicine Research, Children’s National Hospital, Washington, District of Columbia, USA
| | - Christopher R. Heier
- Center for Genetic Medicine Research, Children’s National Hospital, Washington, District of Columbia, USA
- Department of Genomics and Precision Medicine, George Washington University School of Medicine and Health Sciences, Washington, District of Columbia, USA
| | - Alyson A. Fiorillo
- Center for Genetic Medicine Research, Children’s National Hospital, Washington, District of Columbia, USA
- Department of Genomics and Precision Medicine, George Washington University School of Medicine and Health Sciences, Washington, District of Columbia, USA
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Suen AO, Chen F, Wang S, Li Z, Zhu J, Yang Y, Conn O, Lopez K, Cui P, Wechsler L, Cross A, Fiskum G, Kozar R, Hu P, Miller C, Zou L, Williams B, Chao W. Extracellular RNA Sensing Mediates Inflammation and Organ Injury in a Murine Model of Polytrauma. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2023; 210:1990-2000. [PMID: 37133342 PMCID: PMC10235856 DOI: 10.4049/jimmunol.2300103] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 04/06/2023] [Indexed: 05/04/2023]
Abstract
Severe traumatic injury leads to marked systemic inflammation and multiorgan injury. Endogenous drivers such as extracellular nucleic acid may play a role in mediating innate immune response and the downstream pathogenesis. Here, we explored the role of plasma extracellular RNA (exRNA) and its sensing mechanism in inflammation and organ injury in a murine model of polytrauma. We found that severe polytrauma-bone fracture, muscle crush injury, and bowel ischemia-induced a marked increase in plasma exRNA, systemic inflammation, and multiorgan injury in mice. Plasma RNA profiling with RNA sequencing in mice and humans revealed a dominant presence of miRNAs and marked differential expression of numerous miRNAs after severe trauma. Plasma exRNA isolated from trauma mice induced a dose-dependent cytokine production in macrophages, which was almost abolished in TLR7-deficient cells but unchanged in TLR3-deficient cells. Moreover, RNase or specific miRNA inhibitors against the selected proinflammatory miRNAs (i.e., miR-7a-5p, miR-142, let-7j, miR-802, and miR-146a-5p) abolished or attenuated trauma plasma exRNA-induced cytokine production, respectively. Bioinformatic analyses of a group of miRNAs based on cytokine readouts revealed that high uridine abundance (>40%) is a reliable predictor in miRNA mimic-induced cytokine and complement production. Finally, compared with the wild-type, TLR7-knockout mice had attenuated plasma cytokine storm and reduced lung and hepatic injury after polytrauma. These data suggest that endogenous plasma exRNA of severely injured mice and ex-miRNAs with high uridine abundance prove to be highly proinflammatory. TLR7 sensing of plasma exRNA and ex-miRNAs activates innate immune responses and plays a role in inflammation and organ injury after trauma.
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Affiliation(s)
- Andrew O. Suen
- Center for Shock, Trauma and Anesthesiology Research, University of Maryland School of Medicine, Baltimore, MD
- Department of Anesthesia, Pain Management & Perioperative Medicine, Dalhousie University, Halifax, NS, Canada
| | - Fengqian Chen
- Center for Shock, Trauma and Anesthesiology Research, University of Maryland School of Medicine, Baltimore, MD
| | - Sheng Wang
- Center for Shock, Trauma and Anesthesiology Research, University of Maryland School of Medicine, Baltimore, MD
| | - Ziyi Li
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Jing Zhu
- Center for Shock, Trauma and Anesthesiology Research, University of Maryland School of Medicine, Baltimore, MD
| | - Yang Yang
- Center for Shock, Trauma and Anesthesiology Research, University of Maryland School of Medicine, Baltimore, MD
| | - Olivia Conn
- Center for Shock, Trauma and Anesthesiology Research, University of Maryland School of Medicine, Baltimore, MD
| | - Kerri Lopez
- Center for Shock, Trauma and Anesthesiology Research, University of Maryland School of Medicine, Baltimore, MD
| | - Ping Cui
- Center for Shock, Trauma and Anesthesiology Research, University of Maryland School of Medicine, Baltimore, MD
| | - Laurence Wechsler
- Center for Shock, Trauma and Anesthesiology Research, University of Maryland School of Medicine, Baltimore, MD
| | - Alan Cross
- Department of Medicine, University of Maryland School of Medicine, Baltimore, MD
| | - Gary Fiskum
- Center for Shock, Trauma and Anesthesiology Research, University of Maryland School of Medicine, Baltimore, MD
| | - Rosemary Kozar
- Center for Shock, Trauma and Anesthesiology Research, University of Maryland School of Medicine, Baltimore, MD
| | - Peter Hu
- Center for Shock, Trauma and Anesthesiology Research, University of Maryland School of Medicine, Baltimore, MD
| | - Catriona Miller
- Center for Shock, Trauma and Anesthesiology Research, University of Maryland School of Medicine, Baltimore, MD
- Enroute Care Division, Department of Aeromedical Research, U.S. Air Force School of Aerospace Medicine, Wright Patterson Air Force Base, Dayton, OH
| | - Lin Zou
- Center for Shock, Trauma and Anesthesiology Research, University of Maryland School of Medicine, Baltimore, MD
| | - Brittney Williams
- Center for Shock, Trauma and Anesthesiology Research, University of Maryland School of Medicine, Baltimore, MD
| | - Wei Chao
- Center for Shock, Trauma and Anesthesiology Research, University of Maryland School of Medicine, Baltimore, MD
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Hwang DB, Seo Y, Lee E, Won DH, Kim C, Kang M, Jeon Y, Kim HS, Park JW, Yun JW. Diagnostic potential of serum miR-532-3p as a circulating biomarker for experimental intrinsic drug-induced liver injury by acetaminophen and cisplatin in rats. Food Chem Toxicol 2023:113890. [PMID: 37308052 DOI: 10.1016/j.fct.2023.113890] [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: 04/30/2023] [Revised: 06/07/2023] [Accepted: 06/09/2023] [Indexed: 06/14/2023]
Abstract
Evaluating tissue injury largely depends on serum biochemical analysis despite insufficient tissue specificity and low sensitivity. Therefore, attention has been paid to the potential of microRNAs (miRNAs) to overcome the limitations of the current diagnostic tools, as tissue-enriched miRNAs are detected in the blood upon tissue injury. First, using a cisplatin-injected rats, we screened a specific pattern of altered hepatic miRNAs and their target mRNAs. Subsequently, we identified novel liver-specific circulating miRNAs for drug-induced liver injury by comparing miRNA expression changes in organs and serum. RNA sequencing revealed that 32 hepatic miRNAs were differentially expressed (DE) in the cisplatin-treated group. Furthermore, among the 1217 targets predicted using miRDB on these DE-miRNAs, 153 hepatic genes involved in different liver function-related pathways and processes were found to be dysregulated by cisplatin. Next, comparative analyses of the liver, kidneys, and serum DE-miRNAs were conducted to select circulating miRNA biomarker candidates reflecting drug-induced liver injury. Finally, among the four liver-specific circulating miRNAs selected based on their expression patterns in tissue and serum, miR-532-3p was increased in the serum after cisplatin or acetaminophen administration. Our findings suggest that miR-532-3p is potential as a serum biomarker for identifying drug-induced liver injury, leading to the accurate diagnosis.
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Affiliation(s)
- Da-Bin Hwang
- Department of Biotechnology, The Catholic University of Korea, Bucheon, 14662, Republic of Korea
| | - Yoojin Seo
- Department of Oral Biochemistry, Dental and Life Science Institute, School of Dentistry, Pusan National University, Yangsan, 50612, Republic of Korea
| | - Eunji Lee
- Laboratory of Veterinary Toxicology, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, 08826, Republic of Korea
| | - Dong-Hoon Won
- Department of Biotechnology, The Catholic University of Korea, Bucheon, 14662, Republic of Korea
| | - Changuk Kim
- Department of Biotechnology, The Catholic University of Korea, Bucheon, 14662, Republic of Korea
| | - MinHwa Kang
- Laboratory of Veterinary Toxicology, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, 08826, Republic of Korea
| | - Young Jeon
- Laboratory of Veterinary Toxicology, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, 08826, Republic of Korea
| | - Hyung-Sik Kim
- Department of Oral Biochemistry, Dental and Life Science Institute, School of Dentistry, Pusan National University, Yangsan, 50612, Republic of Korea
| | - Jun Won Park
- Division of Biomedical Convergence, College of Biomedical Science, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Jun-Won Yun
- Laboratory of Veterinary Toxicology, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, 08826, Republic of Korea.
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11
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Brittney W, Kozar R, Wei C. EMERGING ROLE OF EXTRACELLULAR RNA IN INNATE IMMUNITY, SEPSIS, AND TRAUMA. Shock 2023; 59:190-199. [PMID: 36730864 PMCID: PMC9957828 DOI: 10.1097/shk.0000000000002032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
ABSTRACT Sepsis and trauma remain the leading causes of morbidity and mortality. Our understanding of the molecular pathogenesis in the development of multiple organ dysfunction in sepsis and trauma has evolved as more focus is on secondary injury from innate immunity, inflammation, and the potential role of endogenous danger molecules. Studies of the past several decades have generated evidence for extracellular RNAs (exRNAs) as biologically active mediators in health and disease. Here, we review studies on plasma exRNA profiling in mice and humans with sepsis and trauma, the role and mode of action by exRNAs, such as ex-micro(mi)RNAs, in host innate immune response, and their potential implications in various organ injury during sepsis and trauma.
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Affiliation(s)
- Williams Brittney
- Translational Research Program, Department of Anesthesiology, and Center for Shock, Trauma and Anesthesiology Research (STAR), University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Rosemary Kozar
- Shock Trauma Center and Center for Shock, Trauma and Anesthesiology Research (STAR), University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Chao Wei
- Translational Research Program, Department of Anesthesiology, and Center for Shock, Trauma and Anesthesiology Research (STAR), University of Maryland School of Medicine, Baltimore, MD 21201, USA
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12
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Song Y, Zhang L, Huang Y. Differential Expression of Peripheral Circulating MicroRNA-146a Between Patients with Atherosclerotic Vulnerable Plaque and Stable Plaque. Int Heart J 2023; 64:847-855. [PMID: 37778988 DOI: 10.1536/ihj.23-006] [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] [Indexed: 10/03/2023]
Abstract
Atherosclerotic plaque rupture and subsequent cardiovascular complications threaten the population's health worldwide. The polymorphism of miR-146a rs2910164 was significantly associated with the risk of vulnerable plaques. However, it remains unclear whether the circulating miR-146a is differentially expressed in stable and vulnerable plaques and thus, serves as a potential biomarker.This study aims to analyze the differential expression of circulating miR-146a between patients with stable and vulnerable plaques to explore the potential molecular mechanisms.Public databases were searched from their inception up to November 2022. A study reporting the specific circulating miR-146a levels between patients with stable and vulnerable plaques was included. The study quality was assessed using the modified genetic 8-stars Newcastle-Ottawa scale. The differential expression levels of miR-146a were evaluated using the standardized mean difference (SMD).Eight studies with 978 patients were included and analyzed. The results showed that miR-146a expression levels were significantly higher in the vulnerable plaque population than in the stable plaque population (SMD: 1.91; 95% confidence interval: 1.35, 2.47; P < 0.01). A similar statistical significance was found in subgroup analyses regarding sample source, disease type, and vulnerable plaque characteristics. Sensitivity analysis suggested the robustness of the results. Analysis of downstream genes suggested that miR-146a-targeted regulation of ACTN4, SARM1, and ULK2 may affect intraplaque hemorrhage.Patients with vulnerable plaque have higher circulating miR-146a levels than those with stable plaque. However, based on the limitations of this study, high-quality studies are still needed to confirm the results.
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Affiliation(s)
- Yenwen Song
- Department of Emergency, Xiyuan Hospital, Chinese Academy of Traditional Chinese Medicine
| | - Lei Zhang
- Department of Emergency, Xiyuan Hospital, Chinese Academy of Traditional Chinese Medicine
| | - Ye Huang
- Department of Emergency, Xiyuan Hospital, Chinese Academy of Traditional Chinese Medicine
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13
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Williams B, Zhu J, Zou L, Chao W. Innate immune TLR7 signaling mediates platelet activation and platelet-leukocyte aggregate formation in murine bacterial sepsis. Platelets 2022; 33:1251-1259. [PMID: 35920588 PMCID: PMC9833650 DOI: 10.1080/09537104.2022.2107627] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Thrombocytopenia is a common complication in sepsis and is associated with higher mortality. Activated platelets express CD62P, which facilitates platelet-leukocyte aggregate (PLA) formation and contributes to thrombocytopenia in sepsis. We have reported that thrombocytopenia in murine sepsis is partly attributable to TLR7 signaling, but the underlying mechanism is unclear. In the current study, we tested the hypothesis that TLR7 mediates platelet activation and PLA formation during sepsis. In vitro, whole blood from WT mice treated with loxoribine, a TLR7 agonist, exhibited a dose-dependent increase in activated platelets compared to the control (PBS with 0.05% DMSO) or loxoribine-treated TLR7-/- whole blood. In a murine model of sepsis, there was a significant increase in platelet activation and PLA formation 24 hours after cecal ligation and puncture (CLP) as evidenced by double positive expression of CD41+/CD62P+ and CD45+/CD62P+, respectively. The sepsis-induced PLA formation was significantly attenuated in TLR7-/- mice. Finally, in ex-vivo experiments, plasma isolated from septic mice induced WT platelet activation, but such effect was significantly attenuated in platelets deficient of TLR7. These findings demonstrate a pivotal role of TLR7 signaling in platelet activation and PLA formation during bacterial sepsis.
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14
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Pottash AE, Levy D, Jeyaram A, Kuo L, Kronstadt SM, Chao W, Jay SM. Combinatorial microRNA Loading into Extracellular Vesicles for Increased Anti-Inflammatory Efficacy. Noncoding RNA 2022; 8:71. [PMID: 36287123 PMCID: PMC9611452 DOI: 10.3390/ncrna8050071] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2022] [Revised: 10/18/2022] [Accepted: 10/20/2022] [Indexed: 01/24/2023] Open
Abstract
Extracellular vesicles (EVs) have emerged as promising therapeutic entities in part due to their potential to regulate multiple signaling pathways in target cells. This potential is derived from the broad array of constituent and/or cargo molecules associated with EVs. Among these, microRNAs (miRNAs) are commonly implicated as important and have been associated with a wide variety of EV-induced biological phenomena. While controlled loading of single miRNAs is a well-documented approach for enhancing EV bioactivity, loading of multiple miRNAs has not been fully leveraged to maximize the potential of EV-based therapies. Here, an established approach to extrinsic nucleic acid loading of EVs, sonication, was utilized to load multiple miRNAs in HEK293T EVs. Combinations of miRNAs were compared to single miRNAs with respect to anti-inflammatory outcomes in assays of increasing stringency, with the combination of miR-146a, miR-155, and miR-223 found to have the most potential amongst the tested groups.
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Affiliation(s)
- Alex Eli Pottash
- Fischell Department of Bioengineering, University of Maryland, 8278 Paint Branch Drive, College Park, MD 20742, USA
| | - Daniel Levy
- Fischell Department of Bioengineering, University of Maryland, 8278 Paint Branch Drive, College Park, MD 20742, USA
| | - Anjana Jeyaram
- Fischell Department of Bioengineering, University of Maryland, 8278 Paint Branch Drive, College Park, MD 20742, USA
| | - Leo Kuo
- Fischell Department of Bioengineering, University of Maryland, 8278 Paint Branch Drive, College Park, MD 20742, USA
| | - Stephanie M. Kronstadt
- Fischell Department of Bioengineering, University of Maryland, 8278 Paint Branch Drive, College Park, MD 20742, USA
| | - Wei Chao
- Translational Research Program, Department of Anesthesiology and Center for Shock, Trauma and Anesthesiology Research, University of Maryland School of Medicine, 660 West Redwood Street, Baltimore, MD 21201, USA
| | - Steven M. Jay
- Fischell Department of Bioengineering, University of Maryland, 8278 Paint Branch Drive, College Park, MD 20742, USA
- Program in Molecular and Cell Biology, University of Maryland, 4062 Campus Drive, College Park, MD 20742, USA
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15
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Huang H, Zhu J, Gu L, Hu J, Feng X, Huang W, Wang S, Yang Y, Cui P, Lin SH, Suen A, Shimada BK, Williams B, Kane MA, Ke Y, Zhang CO, Birukova AA, Birukov KG, Chao W, Zou L. TLR7 Mediates Acute Respiratory Distress Syndrome in Sepsis by Sensing Extracellular miR-146a. Am J Respir Cell Mol Biol 2022; 67:375-388. [PMID: 35679261 PMCID: PMC9447138 DOI: 10.1165/rcmb.2021-0551oc] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 06/09/2022] [Indexed: 12/15/2022] Open
Abstract
TLR7 (Toll-like receptor 7), the sensor for single-stranded RNA, contributes to systemic inflammation and mortality in murine polymicrobial sepsis. Recent studies show that extracellular miR-146a-5p serves as a TLR7 ligand and plays an important role in regulating host innate immunity. However, the role of miR-146a-5p and TLR7 signaling in pulmonary inflammation, endothelial activation, and sepsis-associated acute respiratory distress syndrome remains unclear. Here, we show that intratracheal administration of exogenous miR-146a-5p in mice evokes lung inflammation, activates endothelium, and increases endothelial permeability via TLR7-dependent mechanisms. TLR7 deficiency attenuates pulmonary barrier dysfunction and reduces lung inflammatory response in a murine sepsis model. Moreover, the impact of miR-146a-5p-TLR7 signaling on endothelial activation appears to be a secondary effect because TLR7 is undetectable in the human pulmonary artery and microvascular endothelial cells (ECs), which show no response to direct miR-146a-5p treatment in vitro. Both conditioned media of miR-146a-5p-treated macrophages (Mϕ) and septic sera of wild-type mice induce a marked EC barrier disruption in vitro, whereas Mϕ conditioned media or septic sera of TLR7-/- mice do not exhibit such effect. Cytokine array and pathway enrichment analysis of the Mϕ conditioned media and septic sera identify TNFα (tumor necrosis factor α) as the main downstream effector of miR-146a-5p-TLR7 signaling responsible for the EC barrier dysfunction, which is further supported by neutralizing anti-TNFα antibody intervention. Together, these data demonstrate that TLR7 activation elicits pulmonary inflammation and endothelial barrier disruption by sensing extracellular miR-146a-5p and contributes to sepsis-associated acute respiratory distress syndrome.
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Affiliation(s)
- Huang Huang
- Center for Shock, Trauma, and Anesthesiology Research and
| | - Jing Zhu
- Center for Shock, Trauma, and Anesthesiology Research and
| | - Lili Gu
- Center for Shock, Trauma, and Anesthesiology Research and
| | - Jiang Hu
- Center for Shock, Trauma, and Anesthesiology Research and
| | - Xiujing Feng
- Center for Shock, Trauma, and Anesthesiology Research and
| | - Weiliang Huang
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Maryland, Baltimore, Maryland
| | - Sheng Wang
- Center for Shock, Trauma, and Anesthesiology Research and
| | - Yang Yang
- Center for Shock, Trauma, and Anesthesiology Research and
| | - Ping Cui
- Center for Shock, Trauma, and Anesthesiology Research and
| | - Shao-Hsuan Lin
- Center for Shock, Trauma, and Anesthesiology Research and
| | - Andrew Suen
- Center for Shock, Trauma, and Anesthesiology Research and
| | | | | | - Maureen A. Kane
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Maryland, Baltimore, Maryland
| | - Yunbo Ke
- Center for Shock, Trauma, and Anesthesiology Research and
| | - Chen-ou Zhang
- Division of Pulmonary and Critical Care Medicine, School of Medicine, and
| | - Anna A. Birukova
- Division of Pulmonary and Critical Care Medicine, School of Medicine, and
| | - Konstantin G. Birukov
- Center for Shock, Trauma, and Anesthesiology Research and
- Division of Pulmonary and Critical Care Medicine, School of Medicine, and
| | - Wei Chao
- Center for Shock, Trauma, and Anesthesiology Research and
| | - Lin Zou
- Center for Shock, Trauma, and Anesthesiology Research and
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16
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Antonakos N, Gilbert C, Théroude C, Schrijver IT, Roger T. Modes of action and diagnostic value of miRNAs in sepsis. Front Immunol 2022; 13:951798. [PMID: 35990654 PMCID: PMC9389448 DOI: 10.3389/fimmu.2022.951798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 07/08/2022] [Indexed: 11/13/2022] Open
Abstract
Sepsis is a clinical syndrome defined as a dysregulated host response to infection resulting in life-threatening organ dysfunction. Sepsis is a major public health concern associated with one in five deaths worldwide. Sepsis is characterized by unbalanced inflammation and profound and sustained immunosuppression, increasing patient susceptibility to secondary infections and mortality. microRNAs (miRNAs) play a central role in the control of many biological processes, and deregulation of their expression has been linked to the development of oncological, cardiovascular, neurodegenerative and metabolic diseases. In this review, we discuss the role of miRNAs in sepsis pathophysiology. Overall, miRNAs are seen as promising biomarkers, and it has been proposed to develop miRNA-based therapies for sepsis. Yet, the picture is not so straightforward because of the versatile and dynamic features of miRNAs. Clearly, more research is needed to clarify the expression and role of miRNAs in sepsis, and to promote the use of miRNAs for sepsis management.
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17
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Lam LM, Mangalmurti NS. ExRNA Takes a Toll in Sepsis-Associated Lung Injury. Am J Respir Cell Mol Biol 2022; 67:271-272. [PMID: 35728049 PMCID: PMC9447133 DOI: 10.1165/rcmb.2022-0237ed] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Affiliation(s)
- Lk Metthew Lam
- University of Pennsylvania Perelman School of Medicine, 14640, Philadelphia, Pennsylvania, United States
| | - Nilam S Mangalmurti
- University of Pennsylvania Perelman School of Medicine, 14640, Philadelphia, Pennsylvania, United States;
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18
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Abstract
PURPOSE OF REVIEW Milk-derived extracellular vesicles (MDEVs) are nanovesicles that carry microRNA (miRNA) DNA, RNA, proteins and lipids. MDEVs have a potential of therapeutic targets, based on their properties and cargo profile. The present review summarizes recent studies on MDEVs, their cargo and potential role in mammalian development. RECENT FINDINGS The detailed characterization of their miRNA cargo leads to the conclusion of their potential importance in the regulation of gene expression, immune function, development and infant growth.While their miRNAs are important regulatory elements and their profile expression was characterized in various mammalian milk sources, little is known about their effect on infant health and development. MiRNA activity in breast milk is likely influenced by the overall ecosystem of the early environment, including maternal characteristics, behaviors, and health. SUMMARY MDEVs may have an important role in early child development and infant future health. Understanding benefits of MDEVs characteristics have potential role on gut maturation, immune system development and the prevention of metabolic disorders.
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Affiliation(s)
- Regina Golan-Gerstl
- Department of Pediatrics, Hadassah Medical Center and Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
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