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Wang J, Xin L, Wang H, Xu L, Zhao F, Li W, Yang Y, Wang W, Shan L. Forsythiaside A alleviates acute lung injury via the RNF99/TRAF6/NF-κB signaling pathway. Int Immunopharmacol 2024; 140:112814. [PMID: 39094364 DOI: 10.1016/j.intimp.2024.112814] [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: 06/15/2024] [Revised: 07/11/2024] [Accepted: 07/24/2024] [Indexed: 08/04/2024]
Abstract
The aim of this study was to investigated the effects of forsythiaside A (FA) on acute lung injury (ALI). The lung tissue pathological was detected by hematoxylin-eosin staining (HE) staining. Wet weight/dry weight (w/d) of the lung in mice was measured. Cytokine such as interleukin 1β (IL-1β), IL-6 and tumor necrosis factor-α (TNF-α) were also detected. Compared with the vector group, the protein expression levels of TRAF6 and TAK1 the RNF99 group were significantly reduced. Ubiquitinated TRAF6 protein was increased after knockdown of RNF99. Finally, it was found that FA significantly ameliorated ALI via regulation of RNF99/TRAF6/NF-κB signal pathway. In conclusion, RNF99 was an important biomarker in ALI and FA alleviated ALI via RNF99/ TRAF6/NF-κB signal pathway.
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Affiliation(s)
- Jing Wang
- School of Biology and Food Engineering, Institute of Pharmaceutical Pharmacology Research Center, Suzhou University, Suzhou, Anhui, China.
| | - Linyan Xin
- Yancheng First People's Hospital Pharmacy Department, China
| | - Haichao Wang
- School of Biology and Food Engineering, Institute of Pharmaceutical Pharmacology Research Center, Suzhou University, Suzhou, Anhui, China
| | - Lisheng Xu
- School of Biology and Food Engineering, Institute of Pharmaceutical Pharmacology Research Center, Suzhou University, Suzhou, Anhui, China
| | - Fang Zhao
- School of Biology and Food Engineering, Institute of Pharmaceutical Pharmacology Research Center, Suzhou University, Suzhou, Anhui, China
| | - Wanrong Li
- School of Biology and Food Engineering, Institute of Pharmaceutical Pharmacology Research Center, Suzhou University, Suzhou, Anhui, China
| | - Yang Yang
- School of Biology and Food Engineering, Institute of Pharmaceutical Pharmacology Research Center, Suzhou University, Suzhou, Anhui, China
| | - Weiwei Wang
- School of Biology and Food Engineering, Institute of Pharmaceutical Pharmacology Research Center, Suzhou University, Suzhou, Anhui, China.
| | - Lingling Shan
- School of Biology and Food Engineering, Institute of Pharmaceutical Pharmacology Research Center, Suzhou University, Suzhou, Anhui, China.
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2
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He RR, Yue GL, Dong ML, Wang JQ, Cheng C. Sepsis Biomarkers: Advancements and Clinical Applications-A Narrative Review. Int J Mol Sci 2024; 25:9010. [PMID: 39201697 PMCID: PMC11354379 DOI: 10.3390/ijms25169010] [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] [Received: 07/22/2024] [Revised: 08/14/2024] [Accepted: 08/18/2024] [Indexed: 09/03/2024] Open
Abstract
Sepsis is now defined as a life-threatening syndrome of organ dysfunction triggered by a dysregulated host response to infection, posing significant challenges in critical care. The main objective of this review is to evaluate the potential of emerging biomarkers for early diagnosis and accurate prognosis in sepsis management, which are pivotal for enhancing patient outcomes. Despite advances in supportive care, traditional biomarkers like C-reactive protein and procalcitonin have limitations, and recent studies have identified novel biomarkers with increased sensitivity and specificity, including circular RNAs, HOXA distal transcript antisense RNA, microRNA-486-5p, protein C, triiodothyronine, and prokineticin 2. These emerging biomarkers hold promising potential for the early detection and prognostication of sepsis. They play a crucial role not only in diagnosis but also in guiding antibiotic therapy and evaluating treatment effectiveness. The introduction of point-of-care testing technologies has brought about a paradigm shift in biomarker application, enabling swift and real-time patient evaluation. Despite these advancements, challenges persist, notably concerning biomarker variability and the lack of standardized thresholds. This review summarizes the latest advancements in sepsis biomarker research, spotlighting the progress and clinical implications. It emphasizes the significance of multi-biomarker strategies and the feasibility of personalized medicine in sepsis management. Further verification of biomarkers on a large scale and their integration into clinical practice are advocated to maximize their efficacy in future sepsis treatment.
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Affiliation(s)
- Rong-Rong He
- Graduate School, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China; (R.-R.H.); (G.-L.Y.)
| | - Guo-Li Yue
- Graduate School, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China; (R.-R.H.); (G.-L.Y.)
| | - Mei-Ling Dong
- School of Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou 510006, China;
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China;
| | - Jia-Qi Wang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China;
| | - Chen Cheng
- School of Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou 510006, China;
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China;
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3
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Shen Y, He Y, Pan Y, Liu L, Liu Y, Jia J. Role and mechanisms of autophagy, ferroptosis, and pyroptosis in sepsis-induced acute lung injury. Front Pharmacol 2024; 15:1415145. [PMID: 39161900 PMCID: PMC11330786 DOI: 10.3389/fphar.2024.1415145] [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: 04/10/2024] [Accepted: 07/25/2024] [Indexed: 08/21/2024] Open
Abstract
Sepsis-induced acute lung injury (ALI) is a major cause of death among patients with sepsis in intensive care units. By analyzing a model of sepsis-induced ALI using lipopolysaccharide (LPS) and cecal ligation and puncture (CLP), treatment methods and strategies to protect against ALI were discussed, which could provide an experimental basis for the clinical treatment of sepsis-induced ALI. Recent studies have found that an imbalance in autophagy, ferroptosis, and pyroptosis is a key mechanism that triggers sepsis-induced ALI, and regulating these death mechanisms can improve lung injuries caused by LPS or CLP. This article summarized and reviewed the mechanisms and regulatory networks of autophagy, ferroptosis, and pyroptosis and their important roles in the process of LPS/CLP-induced ALI in sepsis, discusses the possible targeted drugs of the above mechanisms and their effects, describes their dilemma and prospects, and provides new perspectives for the future treatment of sepsis-induced ALI.
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Affiliation(s)
- Yao Shen
- Department of Anesthesiology, The Affiliated Hospital, Southwest Medical University, Luzhou, China
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, The Affiliated Hospital, Southwest Medical University, Luzhou, China
| | - Yingying He
- Department of Anesthesiology, The Affiliated Hospital, Southwest Medical University, Luzhou, China
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, The Affiliated Hospital, Southwest Medical University, Luzhou, China
| | - Ying Pan
- Department of Anesthesiology, The Affiliated Hospital, Southwest Medical University, Luzhou, China
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, The Affiliated Hospital, Southwest Medical University, Luzhou, China
| | - Li Liu
- Department of Anesthesiology, The Affiliated Hospital, Southwest Medical University, Luzhou, China
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, The Affiliated Hospital, Southwest Medical University, Luzhou, China
| | - Yulin Liu
- Department of Anesthesiology, The Affiliated Hospital, Southwest Medical University, Luzhou, China
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, The Affiliated Hospital, Southwest Medical University, Luzhou, China
| | - Jing Jia
- Department of Anesthesiology, The Affiliated Hospital, Southwest Medical University, Luzhou, China
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, The Affiliated Hospital, Southwest Medical University, Luzhou, China
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4
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Jun L, Wang Z, Wang S, Liao X, Qin T, Guo W. Circular RNAs as potential biomarkers for male severe sepsis. Open Life Sci 2024; 19:20220900. [PMID: 39071490 PMCID: PMC11282911 DOI: 10.1515/biol-2022-0900] [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: 10/18/2023] [Revised: 06/03/2024] [Accepted: 06/03/2024] [Indexed: 07/30/2024] Open
Abstract
Circular RNAs (circRNAs) play important roles in many human diseases. However, their role in the development of severe sepsis, a condition that remains one of the main causes of death in intensive care units, has not yet been defined. In this study, we interrogated the molecular mechanisms of circRNAs in severe sepsis. We profiled the expression levels of 5,680 circRNAs in plasma extracted from blood samples of 9 severe sepsis cases or 9 controls (male, age 78 ± 7) using the Human circRNA Array. To enrich protein-coding genes hosting severe sepsis-related circRNAs, we conducted gene ontology and pathways analyses. Out of the identified 760 differentially expressed circRNAs, 404 were upregulated while 356 were downregulated (fold change [FC] ≥2 or ≤-2, and false discovery ratio <0.05). Circ-0008285 (located in exons of CDYL), showed significant upregulation in severe sepsis with an FC of 13.7, and Bonferroni-corrected P < 0.05/5. In silico analysis identified Circ-0008285 interacting microRNAs as well as protein-coding genes. We systematically investigated the differential expression pattern of circRNAs in severe sepsis. The circRNAs we identified might serve as potential biomarkers for diagnosis and prognosis of sepsis.
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Affiliation(s)
- Liang Jun
- Department of Intensive Care, Guangdong Geriatrics Institute, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou510080, China
| | - Zhonghua Wang
- Department of Intensive Care, Guangdong Geriatrics Institute, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou510080, China
| | - Shouhong Wang
- Department of Intensive Care, Guangdong Geriatrics Institute, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou510080, China
| | - Xiaolong Liao
- Department of Intensive Care, Guangdong Geriatrics Institute, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou510080, China
| | - Tiehe Qin
- Department of Intensive Care, Guangdong Geriatrics Institute, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou510080, China
| | - Weixin Guo
- Department of Intensive Care, Guangdong Geriatrics Institute, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, No. 106 Zhongshan Road, Guangzhou510080, China
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5
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Zhang Y, Zhan L, Jiang X, Tang X. Comprehensive review for non-coding RNAs: From mechanisms to therapeutic applications. Biochem Pharmacol 2024; 224:116218. [PMID: 38643906 DOI: 10.1016/j.bcp.2024.116218] [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: 02/01/2024] [Revised: 04/14/2024] [Accepted: 04/16/2024] [Indexed: 04/23/2024]
Abstract
Non-coding RNAs (ncRNAs) are an assorted collection of transcripts that are not translated into proteins. Since their discovery, ncRNAs have gained prominence as crucial regulators of various biological functions across diverse cell types and tissues, and their abnormal functioning has been implicated in disease. Notably, extensive research has focused on the relationship between microRNAs (miRNAs) and human cancers, although other types of ncRNAs, such as long non-coding RNAs (lncRNAs) and circular RNAs (circRNAs), are also emerging as significant contributors to human disease. In this review, we provide a comprehensive summary of our current knowledge regarding the roles of miRNAs, lncRNAs, and circRNAs in cancer and other major human diseases, particularly cancer, cardiovascular, neurological, and infectious diseases. Moreover, we discuss the potential utilization of ncRNAs as disease biomarkers and as targets for therapeutic interventions.
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Affiliation(s)
- YanJun Zhang
- College of Pharmacy and Traditional Chinese Medicine, Jiangsu College of Nursing, Huaian, Jiangsu, 223005, China
| | - Lijuan Zhan
- College of Pharmacy and Traditional Chinese Medicine, Jiangsu College of Nursing, Huaian, Jiangsu, 223005, China
| | - Xue Jiang
- College of Pharmacy and Traditional Chinese Medicine, Jiangsu College of Nursing, Huaian, Jiangsu, 223005, China.
| | - Xiaozhu Tang
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China.
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Chatterjee B, Sarkar M, Bose S, Alam MT, Chaudhary AA, Dixit AK, Tripathi PP, Srivastava AK. MicroRNAs: Key modulators of inflammation-associated diseases. Semin Cell Dev Biol 2024; 154:364-373. [PMID: 36670037 DOI: 10.1016/j.semcdb.2023.01.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 12/06/2022] [Accepted: 01/11/2023] [Indexed: 01/20/2023]
Abstract
Inflammation is a multifaceted biological and pathophysiological response to injuries, infections, toxins, and inflammatory mechanisms that plays a central role in the progression of various diseases. MicroRNAs (miRNAs) are tiny, 19-25 nucleotides long, non-coding RNAs that regulate gene expression via post-transcriptional repression. In this review, we highlight the recent findings related to the significant roles of miRNAs in regulating various inflammatory cascades and immunological processes in the context of many lifestyle-related diseases such as diabetes, cardiovascular diseases, cancer, etc. We also converse on how miRNAs can have a dual impact on inflammatory responses, suggesting that regulation of their functions for therapeutic purposes may be disease-specific.
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Affiliation(s)
- Bilash Chatterjee
- Cancer Biology & Inflammatory Disorder Division, CSIR-Indian Institute of Chemical Biology, Kolkata, WB, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Mrinmoy Sarkar
- Cancer Biology & Inflammatory Disorder Division, CSIR-Indian Institute of Chemical Biology, Kolkata, WB, India
| | - Subhankar Bose
- Cancer Biology & Inflammatory Disorder Division, CSIR-Indian Institute of Chemical Biology, Kolkata, WB, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Md Tanjim Alam
- Cancer Biology & Inflammatory Disorder Division, CSIR-Indian Institute of Chemical Biology, Kolkata, WB, India
| | - Anis Ahmad Chaudhary
- Department of Biology, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSUI), Riyadh, Saudi Arabia
| | | | - Prem Prakash Tripathi
- Cell Biology & Physiology, CSIR-Indian Institute of Chemical Biology, Kolkata, WB, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Amit Kumar Srivastava
- Cancer Biology & Inflammatory Disorder Division, CSIR-Indian Institute of Chemical Biology, Kolkata, WB, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
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Tuerdimaimaiti D, Abuduaini B, Kang S, Jiao J, Li M, Madeniyati W, Tuerdi B, Aili G, Tuerhong R, Kulaxi A. Genome-wide identification and functional analysis of dysregulated alternative splicing profiles in sepsis. J Inflamm (Lond) 2023; 20:31. [PMID: 37749550 PMCID: PMC10521395 DOI: 10.1186/s12950-023-00355-w] [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: 12/29/2022] [Accepted: 08/10/2023] [Indexed: 09/27/2023] Open
Abstract
BACKGROUND An increasing body of evidence now shows that the long-term mortality of patients with sepsis are associated with various sepsis-related immune cell defects. Alternative splicing (AS), as a sepsis-related immune cell defect, is considered as a potential immunomodulatory therapy target to improve patient outcomes. However, our understanding of the role AS plays in sepsis is currently insufficient. AIM This study investigated possible associations between AS and the gene regulatory networks affecting immune cells. We also investigated apoptosis and AS functionality in sepsis pathophysiology. METHODS In this study, we assessed publicly available mRNA-seq data that was obtained from the NCBI GEO dataset (GSE154918), which included a healthy group (HLTY), a mild infection group (INF1), asepsis group (Seps), and a septic shock group (Shock). A total of 79 samples (excluding significant outliers) were identified by a poly-A capture method to generate RNA-seq data. The variable splicing events and highly correlated RNA binding protein (RBP) genes in each group were then systematically analyzed. RESULTS For the first time, we used systematic RNA-seq analysis of sepsis-related AS and identified 1505 variable AS events that differed significantly (p <= 0.01) across the four groups. In the sepsis group, the genes related to significant AS events, such as, SHISA5 and IFI27, were mostly enriched in the cell apoptosis pathway. Furthermore, we identified differential splicing patterns within each of the four groups. Significant differences in the expression of RNA Binding Protein(RBP) genes were observed between the control group and the sepsis group. RBP gene expression was highly correlated with variant splicing events in sepsis, as determined by co-expression analysis; The expression of DDX24, CBFA2T2, NOP, ILF3, DNMT1, FTO, PPRC1, NOLC1 RBPs were significant reduced in sepsis compared to the healthy group. Finally, we constructed an RBP-AS functional network. CONCLUSION Analysis indicated that the RBP-AS functional network serves as a critical post-transcriptional mechanism that regulates the development of sepsis. AS dysregulation is associated with alterations in the regulatory gene expression network that is involved in sepsis. Therefore, the RBP-AS expression network could be useful in refining biomarker predictions in the development of new therapeutic targets for the pathogenesis of sepsis.
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Affiliation(s)
- Dilixiati Tuerdimaimaiti
- Department of RICU, The First Affiliated Hospital of Xinjiang Medical University, 393 South Li Yu Shan Road, Wulumuqi, Xinjiang, 830054, China
| | - Buzukela Abuduaini
- The Intensive Care Unit, The First Affiliated Hospital of Xinjiang Medical University, Wulumuqi, Xinjiang, 830054, China
| | - Shaotao Kang
- Department of RICU, The First Affiliated Hospital of Xinjiang Medical University, 393 South Li Yu Shan Road, Wulumuqi, Xinjiang, 830054, China
| | - Jinliang Jiao
- Department of RICU, The First Affiliated Hospital of Xinjiang Medical University, 393 South Li Yu Shan Road, Wulumuqi, Xinjiang, 830054, China
| | - Mengchen Li
- Department of RICU, The First Affiliated Hospital of Xinjiang Medical University, 393 South Li Yu Shan Road, Wulumuqi, Xinjiang, 830054, China
| | - Wolazihan Madeniyati
- Department of RICU, The First Affiliated Hospital of Xinjiang Medical University, 393 South Li Yu Shan Road, Wulumuqi, Xinjiang, 830054, China
| | - Baihetinisha Tuerdi
- Department of RICU, The First Affiliated Hospital of Xinjiang Medical University, 393 South Li Yu Shan Road, Wulumuqi, Xinjiang, 830054, China.
| | - Gulisitan Aili
- Department of RICU, The First Affiliated Hospital of Xinjiang Medical University, 393 South Li Yu Shan Road, Wulumuqi, Xinjiang, 830054, China
| | - Reyila Tuerhong
- Department of RICU, The First Affiliated Hospital of Xinjiang Medical University, 393 South Li Yu Shan Road, Wulumuqi, Xinjiang, 830054, China
| | - Ajiguli Kulaxi
- Department of RICU, The First Affiliated Hospital of Xinjiang Medical University, 393 South Li Yu Shan Road, Wulumuqi, Xinjiang, 830054, China
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Zeng Z, Lan Y, Chen Y, Zuo F, Gong Y, Luo G, Peng Y, Yuan Z. LncRNA GAS5 suppresses inflammatory responses by inhibiting HMGB1 release via miR-155-5p/SIRT1 axis in sepsis. Eur J Pharmacol 2023; 942:175520. [PMID: 36693551 DOI: 10.1016/j.ejphar.2023.175520] [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: 10/17/2022] [Revised: 01/17/2023] [Accepted: 01/17/2023] [Indexed: 01/22/2023]
Abstract
Sepsis comprises a lethal immunologic response due to infection. Increasingly, evidence has demonstrated the important role of long non-coding RNA growth arrest-specific transcript 5 (GAS5) in the regulation of sepsis. Nevertheless, the mechanisms by which GAS5 participates in the progression of sepsis remain unclear. Our study demonstrated the role and underlying mechanism of GAS5 in regulating lipopolysaccharide (LPS)-induced inflammation. In this study, GAS5 expression was found to be markedly decreased in serum samples of sepsis patients and a sepsis mouse model, and was negatively related with HMGB1 expression. GAS5 overexpression inhibited cell inflammatory responses by decreasing HMGB1 release. Furthermore, GAS5 inhibited LPS-mediated hyperacetylation and the release of HMGB1 by increasing the expression of sirtuin1 (SIRT1). Additionally, upregulated GAS5 attenuated inflammatory responses in vitro and vivo, and the knockdown of a miR-155-5p mimic and SIRT1 rescued the effects of GAS5 upregulation. Mechanistically, GAS5 sponged miR-155-5p to upregulate SIRT1, thereby inhibiting HMGB1 acetylation and release. In conclusion, our findings indicate that GAS5 suppresses inflammatory responses by modulating the miR-155-5p/SIRT1/HMGB1 axis in sepsis, providing a novel therapeutic target for inflammation in sepsis.
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Affiliation(s)
- Zhuo Zeng
- Institute of Burn Research, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Yingying Lan
- Institute of Burn Research, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Yu Chen
- Institute of Burn Research, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Fangqing Zuo
- Institute of Burn Research, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Yali Gong
- Institute of Burn Research, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Gaoxing Luo
- Institute of Burn Research, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Yizhi Peng
- Institute of Burn Research, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Zhiqiang Yuan
- Institute of Burn Research, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, Army Medical University (Third Military Medical University), Chongqing, China.
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9
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MicroRNAs and MAPKs: Evidence of These Molecular Interactions in Alzheimer's Disease. Int J Mol Sci 2023; 24:ijms24054736. [PMID: 36902178 PMCID: PMC10003111 DOI: 10.3390/ijms24054736] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 02/24/2023] [Accepted: 02/27/2023] [Indexed: 03/06/2023] Open
Abstract
Alzheimer's disease (AD) is a neurodegenerative disorder known to be the leading cause of dementia worldwide. Many microRNAs (miRNAs) were found deregulated in the brain or blood of AD patients, suggesting a possible key role in different stages of neurodegeneration. In particular, mitogen-activated protein kinases (MAPK) signaling can be impaired by miRNA dysregulation during AD. Indeed, the aberrant MAPK pathway may facilitate the development of amyloid-beta (Aβ) and Tau pathology, oxidative stress, neuroinflammation, and brain cell death. The aim of this review was to describe the molecular interactions between miRNAs and MAPKs during AD pathogenesis by selecting evidence from experimental AD models. Publications ranging from 2010 to 2023 were considered, based on PubMed and Web of Science databases. According to obtained data, several miRNA deregulations may regulate MAPK signaling in different stages of AD and conversely. Moreover, overexpressing or silencing miRNAs involved in MAPK regulation was seen to improve cognitive deficits in AD animal models. In particular, miR-132 is of particular interest due to its neuroprotective functions by inhibiting Aβ and Tau depositions, as well as oxidative stress, through ERK/MAPK1 signaling modulation. However, further investigations are required to confirm and implement these promising results.
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10
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Chen Y, Wang X, Wang J, Zong J, Wan X. Revealing novel pyroptosis-related therapeutic targets for sepsis based on machine learning. BMC Med Genomics 2023; 16:23. [PMID: 36765335 PMCID: PMC9912626 DOI: 10.1186/s12920-023-01453-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Accepted: 02/06/2023] [Indexed: 02/12/2023] Open
Abstract
BACKGROUND Sepsis is one of the most lethal diseases worldwide. Pyroptosis is a unique form of cell death, and the mechanism of interaction with sepsis is not yet clear. The aim of this study was to uncover pyroptosis genes associated with sepsis and to provide early therapeutic targets for the treatment of sepsis. METHODS Based on the GSE134347 dataset, sepsis-related genes were mined by differential expression analysis and weighted gene coexpression network analysis (WGCNA). Subsequently, the sepsis-related genes were analysed for enrichment, and a protein‒protein interaction (PPI) network was constructed. We performed unsupervised consensus clustering of sepsis patients based on 33 pyroptosis-related genes (PRGs) provided by prior reviews. We finally obtained the PRGs mostly associated with sepsis by machine learning prediction models combined with prior reviews. The GSE32707 dataset served as an external validation dataset to validate the model and PRGs via receiver operating characteristic (ROC) curves. The NetworkAnalyst online tool was utilized to create a ceRNA network of lncRNAs and miRNAs around PRGs mostly associated with sepsis. RESULTS A total of 170 genes associated with sepsis and 13 hub genes were acquired by WGCNA and PPI network analysis. The results of the enrichment analysis implied that these genes were mainly involved in the regulation of the inflammatory response and the positive regulation of bacterial and fungal defence responses. The prolactin signalling pathway and IL-17 signalling pathway were the primary enrichment pathways. Thirty-three PRGs can effectively classify septic patients into two subtypes, implying that there is a reciprocal relationship between sepsis and pyroptosis. Eventually, NLRC4 was considered the PRG most strongly associated with sepsis. The validation results of the prediction model and NLRC4 based on ROC curves were 0.74 and 0.67, respectively, both of which showed better predictive values. Meanwhile, the ceRNA network consisting of 6 lncRNAs and 2 miRNAs was constructed around NLRC4. CONCLUSION NLRC4, as the PRG mostly associated with sepsis, could be considered a potential target for treatment. The 6 lncRNAs and 2 miRNAs centred on NLRC4 could serve as a further research direction to uncover the deeper pathogenesis of sepsis.
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Affiliation(s)
- Ying Chen
- grid.452435.10000 0004 1798 9070Department of Critical Care Medicine, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning China ,grid.452828.10000 0004 7649 7439Department of Respiratory Medicine, The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning China
| | - Xingkai Wang
- grid.452435.10000 0004 1798 9070Department of Orthopedics, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning China
| | - Jiaxin Wang
- grid.411971.b0000 0000 9558 1426Institute (College) of Integrative Medicine, Dalian Medical University, Dalian, Liaoning China
| | - Junwei Zong
- Department of Orthopedics, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China. .,Institute (College) of Integrative Medicine, Dalian Medical University, Dalian, Liaoning, China.
| | - Xianyao Wan
- Department of Critical Care Medicine, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China.
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11
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Loganathan T, Doss C GP. Non-coding RNAs in human health and disease: potential function as biomarkers and therapeutic targets. Funct Integr Genomics 2023; 23:33. [PMID: 36625940 PMCID: PMC9838419 DOI: 10.1007/s10142-022-00947-4] [Citation(s) in RCA: 50] [Impact Index Per Article: 50.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 12/14/2022] [Accepted: 12/15/2022] [Indexed: 01/11/2023]
Abstract
Human diseases have been a critical threat from the beginning of human history. Knowing the origin, course of action and treatment of any disease state is essential. A microscopic approach to the molecular field is a more coherent and accurate way to explore the mechanism, progression, and therapy with the introduction and evolution of technology than a macroscopic approach. Non-coding RNAs (ncRNAs) play increasingly important roles in detecting, developing, and treating all abnormalities related to physiology, pathology, genetics, epigenetics, cancer, and developmental diseases. Noncoding RNAs are becoming increasingly crucial as powerful, multipurpose regulators of all biological processes. Parallel to this, a rising amount of scientific information has revealed links between abnormal noncoding RNA expression and human disorders. Numerous non-coding transcripts with unknown functions have been found in addition to advancements in RNA-sequencing methods. Non-coding linear RNAs come in a variety of forms, including circular RNAs with a continuous closed loop (circRNA), long non-coding RNAs (lncRNA), and microRNAs (miRNA). This comprises specific information on their biogenesis, mode of action, physiological function, and significance concerning disease (such as cancer or cardiovascular diseases and others). This study review focuses on non-coding RNA as specific biomarkers and novel therapeutic targets.
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Affiliation(s)
- Tamizhini Loganathan
- Laboratory of Integrative Genomics, Department of Integrative Biology, School of Biosciences and Technology, Vellore Institute of Technology (VIT), Vellore- 632014, Tamil Nadu, India
| | - George Priya Doss C
- Laboratory of Integrative Genomics, Department of Integrative Biology, School of Biosciences and Technology, Vellore Institute of Technology (VIT), Vellore- 632014, Tamil Nadu, India.
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Yang D, Zhao D, Ji J, Wang C, Liu N, Bao X, Liu X, Jiang S, Zhang Q, Tang L. CircRNA_0075723 protects against pneumonia-induced sepsis through inhibiting macrophage pyroptosis by sponging miR-155-5p and regulating SHIP1 expression. Front Immunol 2023; 14:1095457. [PMID: 36923408 PMCID: PMC10008927 DOI: 10.3389/fimmu.2023.1095457] [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: 11/11/2022] [Accepted: 02/16/2023] [Indexed: 03/01/2023] Open
Abstract
Introduction Circular RNAs (circRNAs) have been linked to regulate macrophage polarization and subsequent inflammation in sepsis. However, the underlying mechanism and the function of circRNAs in macrophage pyroptosis in pneumonia-induced sepsis are still unknown. Methods In this study, we screened the differentially expressed circRNAs among the healthy individuals, pneumonia patients without sepsis and pneumonia-induced sepsis patients in the plasma by RNA sequencing (RNA-seq). Then we evaluated macrophage pyroptosis in sepsis patients and in vitro LPS/nigericin activated THP-1 cells. The lentiviral recombinant vector for circ_0075723 overexpression (OE-circ_0075723) and circ_0075723 silence (sh-circ_0075723) were constructed and transfected into THP-1 cells to explore the potential mechanism of circ_0075723 involved in LPS/nigericin induced macrophage pyroptosis. Results We found circ_0075723, a novel circRNA that was significantly downregulated in pneumonia-induced sepsis patients compared to pneumonia patients without sepsis and healthy individuals. Meanwhile, pneumonia-induced sepsis patients exhibited activation of NLRP3 inflammasome and production of the pyroptosis-associated pro-inflammatory cytokines IL-1β and IL-18. circ_0075723 inhibited macrophage pyroptosis via sponging miR-155-5p which promoted SHIP1 expression directly. Besides, we found that circ_0075723 in macrophages promoted VE-cadherin expression in endothelial cells through inhibiting the release of NLRP3 inflammasome-related cytokines, IL-1β and IL-18, and protects endothelial cell integrity. Discussion Our findings propose a unique approach wherein circ_0075723 suppresses macrophage pyroptosis and inflammation in pneumonia-induced sepsis via sponging with miR-155-5p and promoting SHIP1 expression. These findings indicate that circRNAs could be used as possible potential diagnostic and therapeutic targets for pneumonia-induced sepsis.
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Affiliation(s)
- Dianyin Yang
- Department of Internal Emergency Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
- Medical School, Tongji University, Shanghai, China
| | - Dongyang Zhao
- Department of Internal Emergency Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
- Medical School, Tongji University, Shanghai, China
| | - Jinlu Ji
- Medical School, Tongji University, Shanghai, China
| | - Chunxue Wang
- Department of Internal Emergency Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
- Medical School, Tongji University, Shanghai, China
| | - Na Liu
- Department of Nephrology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Xiaowei Bao
- Department of Internal Emergency Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
- Medical School, Tongji University, Shanghai, China
| | - Xiandong Liu
- Department of Internal Emergency Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Sen Jiang
- Department of Internal Emergency Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | | | - Lunxian Tang
- Department of Internal Emergency Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
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Silencing of Long Noncoding RNA MIAT Contributes to Relieving Sepsis-Induced Myocardial Depression via the NF-κB Axis. J Surg Res 2022; 278:282-292. [DOI: 10.1016/j.jss.2022.03.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 02/22/2022] [Accepted: 03/29/2022] [Indexed: 11/24/2022]
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Screening of Sepsis Biomarkers Based on Bioinformatics Data Analysis. JOURNAL OF HEALTHCARE ENGINEERING 2022; 2022:6788569. [PMID: 36199375 PMCID: PMC9529510 DOI: 10.1155/2022/6788569] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 09/08/2022] [Accepted: 09/09/2022] [Indexed: 11/18/2022]
Abstract
Methods Gene expression profiles of GSE13904, GSE26378, GSE26440, GSE65682, and GSE69528 were obtained from the National Center for Biotechnology Information (NCBI). The differentially expressed genes (DEGs) were searched using limma software package. Gene Ontology (GO) functional analysis, Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis, and protein-protein interaction (PPI) network analysis were performed to elucidate molecular mechanisms of DEGs and screen hub genes. Results A total of 108 DEGs were identified in the study, of which 67 were upregulated and 41 were downregulated. 15 superlative diagnostic biomarkers (CCL5, CCR7, CD2, CD27, CD274, CD3D, GNLY, GZMA, GZMH, GZMK, IL2RB, IL7R, ITK, KLRB1, and PRF1) for sepsis were identified by bioinformatics analysis. Conclusion 15 hub genes (CCL5, CCR7, CD2, CD27, CD274, CD3D, GNLY, GZMA, GZMH, GZMK, IL2RB, IL7R, ITK, KLRB1, and PRF1) have been elucidated in this study, and these biomarkers may be helpful in the diagnosis and therapy of patients with sepsis.
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Li J, Zhou H, Wei B, Che D, Xu Y, Pi L, Fu L, Hong J, Gu X. The rs8506 TT Genotype in lincRNA-NR_024015 Contributes to the Risk of Sepsis in a Southern Chinese Child Population. Front Public Health 2022; 10:927527. [PMID: 35910890 PMCID: PMC9326103 DOI: 10.3389/fpubh.2022.927527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Accepted: 06/16/2022] [Indexed: 11/13/2022] Open
Abstract
Background Sepsis is a highly life-threatening heterogeneous syndrome and a global health burden. Studies have shown that many genetic variants could influence the risk of sepsis. Long non-coding RNA lincRNA-NR_024015 may participate in functional alteration of endothelial cell via vascular endothelial growth factor (VEGF) signaling, whereas its relevance between the lincRNA-NR_024015 polymorphism and sepsis susceptibility is still unclear. Methods 474 sepsis patients and 678 healthy controls were enrolled from a southern Chinese child population in the present study. The polymorphism of rs8506 in lincRNA-NR_024015 was determined using Taqman methodology. Results Overall, a significant association was found between rs8506 polymorphism and the risk of sepsis disease (TT vs. CC/CT: adjusted OR = 1.751, 95%CI = 1.024–2.993, P = 0.0406). In the stratified analysis, the results suggested that the carriers of TT genotypes had a significantly increased sepsis risk among the children aged 12–60 months, females, early-stage sepsis and survivors (TT vs. CC/CT: ORage = 2.413; ORfemale = 2.868; ORsepsis = 2.533; ORsurvivor = 1.822; adjusted for age and gender, P < 0.05, respectively). Conclusion Our study indicated that lincRNA-NR_024015 rs8506 TT genotype might contribute to the risk of sepsis in a southern Chinese child population. Future research is required to elucidate the possible immunoregulatory mechanisms of this association and advance the development of novel biomarkers in sepsis.
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Affiliation(s)
- Jinqing Li
- Department of Clinical Biological Resource Bank, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Huazhong Zhou
- Department of Clinical Biological Resource Bank, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Bing Wei
- Department of Blood Transfusion, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Di Che
- Department of Clinical Biological Resource Bank, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Yufen Xu
- Department of Clinical Biological Resource Bank, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Lei Pi
- Department of Clinical Biological Resource Bank, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Lanyan Fu
- Department of Clinical Biological Resource Bank, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Jie Hong
- Pediatric Intensive Care Unit, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
- Jie Hong
| | - Xiaoqiong Gu
- Department of Clinical Biological Resource Bank, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
- *Correspondence: Xiaoqiong Gu
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STANCIOIU F, IVANESCU B, DUMITRESCU R. Perspectives on the Immune System in Sepsis. MAEDICA 2022; 17:404-414. [PMID: 36032596 PMCID: PMC9375866 DOI: 10.26574/maedica.2022.17.2.395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Beyond the modifications shown by the biochemistry labs, profound and ample modifications are seen in septic patients at a molecular level stemming from DNA translation and gene expression, manifested as unique profiles of mRNA (messenger), as well as non-coding, functional RNAs: miRNA (micro) and lncRNAs (long non-coding). Counteracting these modifications requires treatment with pleiotropic molecules and/or combination of molecules and opens the possibility of future treatments with arrays of siRNAs and/or specific panels of small molecules tailored for each patient subpopulation.
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Affiliation(s)
| | | | - Radu DUMITRESCU
- University of Bucharest, Medicover Hospital, Bucharest, Romania
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Wei L, Yang Y, Wang W, Xu R. Circular RNAs in the pathogenesis of sepsis and their clinical implications:
A narrative review. ANNALS OF THE ACADEMY OF MEDICINE, SINGAPORE 2022. [DOI: 10.47102/annals-acadmedsg.2021405] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Introduction: Sepsis is defined as a life-threatening complication that occurs when the body responds to
an infection attacking the host. Sepsis rapidly progresses and patients deteriorate and develop septic shock,
with multiple organ failure, if not promptly treated. Currently no effective therapy is available for sepsis;
therefore, early diagnosis is crucial to decrease the high mortality rate. Genome-wide expression analyses
of patients in critical conditions have confirmed that the expression levels of the majority of genes are
changed, suggesting that the molecular basis of sepsis is at the gene level. This review aims to elucidate the
role of circular (circ) RNAs in the pathogenesis of sepsis and sepsis-induced organ damage. In addition,
the feasibility of using circRNAs as novel diagnostic biomarkers for sepsis is also discussed, as well as
circRNA-based therapy.
Method: This narrative review is based on a literature search using Medline database. Search terms
used were “circular RNAs and sepsis”, “circRNAs and sepsis”, “non-coding RNAs and sepsis”, “ncRNAs
and sepsis”, “circRNAs and septic pathogenesis”, “circRNAs and septic model”, “circRNAs and septic
shock” and “circRNAs, biomarker, and sepsis”.
Results: Numerous studies indicate that circRNAs might exert pivotal roles in regulating the immune
system of the host against various pathogens, such as bacteria and viruses. Dysregulation of circRNA
expression levels has been confirmed as an early event in sepsis and associated with the inflammatory
response, immunosuppression and coagulation dysfunction. This impairment in regulation eventually leads
to multiple organ dysfunctions, including of the kidneys, lungs and heart.
Conclusion: By investigating the regulation of circRNAs in sepsis, new molecular targets for the
diagnosis and intervention of sepsis can be identified. Such an understanding will be important for the
development of therapeutic drugs.
Keywords: Acute kidney injury, biomarker, circRNAs, inflammation, sepsis
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Affiliation(s)
- Lin Wei
- Gansu Provincial Maternity and Child-care Hospital, Lanzhou, China
| | - Yongpeng Yang
- Gansu Provincial Maternity and Child-care Hospital, Lanzhou, China
| | - Weikai Wang
- Gansu Provincial Maternity and Child-care Hospital, Lanzhou, China
| | - Ruifeng Xu
- Gansu Provincial Maternity and Child-care Hospital, Lanzhou, China
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Hou J, He M, Chen Q, Liang S. LncRNA H19 acts as miR-301a-3p sponge to alleviate lung injury in mice with sepsis by regulating Adcy1. Immunopharmacol Immunotoxicol 2022; 44:565-573. [PMID: 35438054 DOI: 10.1080/08923973.2022.2067045] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
BACKGROUND The abnormal expression of long non-coding RNA (lncRNA) is closely related to disease progression. However, the role and mechanism of lncRNA H19 (lncH19) in sepsis-induced lung injury remain to be elucidated. METHODS Cercal ligation and puncture (CLP) mice models and lipopolysaccharide (LPS)-induced cell injury model were used to construct sepsis-induced lung injury in vivo and in vitro. The expression of lncH19, microRNA (miR)-301a-3p and adenylate cyclase 1 (Adcy1) mRNA was assessed using quantitative real-time PCR. The concentrations of inflammatory factors were determined by ELISA assay. Cell proliferation and apoptosis were determined using cell counting kit 8 assay, EdU staining and flow cytometry. The protein expression of apoptosis markers and Adcy1 was examined by western blot analysis. Oxidative stress was assessed by detecting the contents of oxidative stress markers. The interaction between miR-301a-3p and lncH19 or Adcy1 was confirmed using RNA pull-down assay, dual-luciferase reporter assay and RIP assay. RESULTS LncH19 was lowly expressed in CLP mice models and LPS-induced cell injury models. Overexpressed lncH19 could alleviate CLP-induced lung injury in mice, as well as LPS-induced cell apoptosis, inflammation and oxidative stress. MiR-301a-3p could be sponged by lncH19, and its overexpression could reverse the inhibition of lncH19 on LPS-induced cell injury. Adcy1 was a target of miR-301a-3p, and its expression was upregulated by lncH19. Silencing of Adcy1 could abolish the suppressive effect of miR-301a-3p inhibitor on LPS-induced cell injury. CONCLUSION LncH19 might inhibit sepsis-induced lung injury through acting as a sponge of miR-301a-3p to upregulate Adcy1.Highlights:LncH19 overexpression relieves CLP-induced lung injury and LPS-induced cell injury.LncH19 directly sponges miR-301a-3p.MiR-301a-3p targets Adcy1.
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Affiliation(s)
- Jingjing Hou
- Department of Pulmonary and Critical Care Medicine, Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China
| | - Mei He
- Department of Pulmonary and Critical Care Medicine, Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China
| | - Qiang Chen
- Department of Pulmonary and Critical Care Medicine, Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China
| | - Siwei Liang
- Department of Pulmonary and Critical Care Medicine, Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China
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Wang W, Xu R, Zhao H, Xiong Y, He P. CircEXOC5 promotes ferroptosis by enhancing ACSL4 mRNA stability via binding to PTBP1 in sepsis-induced acute lung injury. Immunobiology 2022; 227:152219. [DOI: 10.1016/j.imbio.2022.152219] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 03/29/2022] [Accepted: 04/09/2022] [Indexed: 12/16/2022]
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Miranda M, Nadel S. Impact of Inherited Genetic Variants on Critically Ill Septic Children. Pathogens 2022; 11:pathogens11010096. [PMID: 35056044 PMCID: PMC8781648 DOI: 10.3390/pathogens11010096] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 01/05/2022] [Accepted: 01/10/2022] [Indexed: 11/16/2022] Open
Abstract
Sepsis remains an important source of morbidity and mortality in children, despite the development of standardized care. In the last decades, there has been an increased interest in genetic and genomic approaches to early recognition and development of treatments to manipulate the host inflammatory response. This review will present a summary of the normal host response to infection and progression to sepsis, followed by highlighting studies with a focus on gene association studies, epigenetics, and genome-wide expression profiling. The susceptibility (or outcome) of sepsis in children has been associated with several polymorphisms of genes broadly involved in inflammation, immunity, and coagulation. More recently, gene expression profiling has been focused on identifying novel biomarkers, pathways and therapeutic targets, and gene expression-based subclassification. Knowledge of a patient’s individual genotype may, in the not-too-remote future, be used to guide tailored treatment for sepsis. However, at present, the impact of genomics remains far from the bedside of critically ill children.
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Affiliation(s)
- Mariana Miranda
- Paediatric Unit, Imperial College Healthcare NHS Trust, London W2 1NY, UK
- Correspondence:
| | - Simon Nadel
- St. Mary’s Hospital, Imperial College Healthcare NHS Trust, and Imperial College, London W2 1NY, UK;
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Jiang L, Li J. lncRNA GMDS‑AS1 upregulates IL‑6, TNF‑α and IL‑1β, and induces apoptosis in human monocytic THP‑1 cells via miR‑96‑5p/caspase 2 signaling. Mol Med Rep 2022; 25:67. [PMID: 34981821 PMCID: PMC8767548 DOI: 10.3892/mmr.2022.12583] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 09/23/2020] [Indexed: 12/02/2022] Open
Abstract
Long non-coding RNA (lncRNA) is considered a crucial modulator of the initiation and progression of several diseases. However, the roles of lncRNA in sepsis have yet to be fully elucidated. Thus, the aim of the present study was to investigate the effects of the lncRNA GDP-mannose 4,6-dehydratase antisense 1 (GMDS-AS1) and its target in order to understand its role in the pathogenesis of sepsis. An in vitro sepsis model was established by lipopolysaccharide (LPS) induction. Reverse transcription-quantitative PCR analysis was applied to detect the expression of inflammatory cytokines and the levels of GMDS-AS1, microRNA (miR)-96-5p and caspase-2 (CASP2). Flow cytometry was used to quantify the rate of apoptosis. In addition, the interaction between miR-96-5p and CASP2 was verified using a luciferase reporter assay. Western blot analysis was performed to assess the protein levels of CASP2 following alterations in GMDS-AS1 and miR-96-5p expression using transfection. The levels of interleukin (IL)-6, tumor necrosis factor-α and IL-1β were increased by LPS treatment in THP-1 cells, whereas miR-96-5p expression was downregulated. miR-96-5p overexpression inhibited LPS-induced inflammatory responses and apoptosis. In addition, GMDS-AS1 expression increased, and upregulation of GMDS-AS1 inhibited, the expression of miR-96-5p in the in vitro sepsis model. Moreover, CASP2 was confirmed to be a direct target of miR-96-5p. Therefore, the lncRNA GMDS-AS1 regulated inflammatory responses and apoptosis by modulating CASP2 and sponging miR-96-5p in LPS-induced THP-1 cells. In summary, the findings of the present study demonstrated that lncRNA GMDS-AS1 could promote the development of sepsis by targeting miR-96-5p/CASP2, indicating that the GMDS-AS1/miR-96-5p/CASP2 axis may be a new therapeutic target and potential research direction for sepsis therapy.
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Affiliation(s)
- Lei Jiang
- Department of Emergency, The First Affiliated Hospital of Naval Medical University, Shanghai 200433, P.R. China
| | - Jinghui Li
- Intensive Care Unit, Kunming Medical University Affiliated Yan'an Hospital, Kunming, Yunnan 650051, P.R. China
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Xu Z, Lin X, Zhu J, Zhu Z. Long noncoding RNAs Colorectal Neoplasia Differentially Expressed and taurine-upregulated gene 1 are downregulated in sepsis and positively regulate each other to suppress the apoptosis of cardiomyocytes. Bioengineered 2021; 12:11369-11375. [PMID: 34872438 PMCID: PMC8810183 DOI: 10.1080/21655979.2021.2008658] [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] [Indexed: 12/29/2022] Open
Abstract
Long noncoding RNAs (lncRNAs) Colorectal Neoplasia Differentially Expressed (CRNDE) and taurine-upregulated gene 1 (TUG1) play similar roles in sepsis, indicating the existence of the crosstalk between them. Sepsis is a major cause of injuries in heart, which are related to high mortality rates. This study was therefore carried out to analyze the potential crosstalk between CRNDE and TUG1 in sepsis, with a focus on sepsis-induced cell apoptosis in heart. Expression of CRNDE and TUG1 was analyzed with RT-qPCR. Correlations between them were analyzed by Pearson’s correlation coefficient. CRNDE and TUG1 were overexpressed in cardiomyocytes to determine the relationship between them. The roles of CRNDE and TUG1 in regulating the apoptosis of cardiomyocytes were explored by cell apoptosis assay. We found that both CRNDE and TUG1 were downregulated in sepsis. In cardiomyocytes, LPS treatment resulted in the downregulation of CRNDE and TUG1. Overexpression of CRNDE and TUG1 in cardiomyocytes increased the expression levels of each other. Under lipopolysaccharide (LPS) treatment, decreased apoptosis rates of cardiomyocytes were observed after CRNDE and TUG1 overexpression. CRNDE and TUG1 co-overexpression showed a stronger effect. In conclusion, CRNDE and TUG1 are downregulated in sepsis and they positively regulate each other to suppress the apoptosis of cardiomyocytes.
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Affiliation(s)
- Zhenwei Xu
- Department of Emergency, Quanzhou First Hospital Affiliated to Fujian Medical University, Quanzhou City, Fujian Province, PR. China
| | - Xingyu Lin
- Department of Emergency, Fujian Medical University Union Hospital, Fuzhou City, Fujian Province, PR China
| | - Jingfa Zhu
- Department of Emergency, Quanzhou First Hospital Affiliated to Fujian Medical University, Quanzhou City, Fujian Province, PR. China
| | - Zhixia Zhu
- Department of Emergency, Quanzhou First Hospital Affiliated to Fujian Medical University, Quanzhou City, Fujian Province, PR. China
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Fatmi A, Chabni N, Cernada M, Vento M, González-López M, Aribi M, Pallardó FV, García-Giménez JL. Clinical and immunological aspects of microRNAs in neonatal sepsis. Biomed Pharmacother 2021; 145:112444. [PMID: 34808550 DOI: 10.1016/j.biopha.2021.112444] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 11/08/2021] [Accepted: 11/16/2021] [Indexed: 12/12/2022] Open
Abstract
Neonatal sepsis constitutes a highly relevant public health challenge and is the most common cause of infant morbidity and mortality worldwide. Recent studies have demonstrated that during infection epigenetic changes may occur leading to reprogramming of gene expression. Post-transcriptional regulation by short non-coding RNAs (e.g., microRNAs) have recently acquired special relevance because of their role in the regulation of the pathophysiology of sepsis and their potential clinical use as biomarkers. ~22-nucleotide of microRNAs are not only involved in regulating multiple relevant cellular and molecular functions, such as immune cell function and inflammatory response, but have also been proposed as good candidates as biomarkers in sepsis. Nevertheless, establishing clinical practice guidelines based on microRNA patterns as biomarkers for diagnosis and prognosis in neonatal sepsis has yet to be achieved. Given their differential expression across tissues in neonates, the release of specific microRNAs to blood and their expression pattern can differ compared to sepsis in adult patients. Further in-depth research is necessary to fully understand the biological relevance of microRNAs and assess their potential use in clinical settings. This review provides a general overview of microRNAs, their structure, function and biogenesis before exploring their potential clinical interest as diagnostic and prognostic biomarkers of neonatal sepsis. An important part of the review is focused on immune and inflammatory aspects of selected microRNAs that may become biomarkers for clinical use and therapeutic intervention.
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Affiliation(s)
- Ahlam Fatmi
- Laboratory of Applied Molecular Biology and Immunology, University of Tlemcen, W0414100, 13000 Tlemcen, Algeria
| | - Nafissa Chabni
- Faculty of Medicine, Tlemcen Medical Centre University, 13000 Tlemcen, Algeria
| | - María Cernada
- Division of Neonatology, University and Polytechnic Hospital La Fe, Valencia, Spain; Neonatal Research Group, Health Research Institute La Fe, Valencia, Spain, University and Polytechnic Hospital La Fe, Valencia, Spain
| | - Máximo Vento
- Division of Neonatology, University and Polytechnic Hospital La Fe, Valencia, Spain; Neonatal Research Group, Health Research Institute La Fe, Valencia, Spain, University and Polytechnic Hospital La Fe, Valencia, Spain
| | - María González-López
- Department of Pediatrics. Hospital Regional Universitario de Málaga, Málaga, Spain
| | - Mourad Aribi
- Laboratory of Applied Molecular Biology and Immunology, University of Tlemcen, W0414100, 13000 Tlemcen, Algeria; Biotechnology Center of Constantine (CRBt), 25000 Constantine, Algeria
| | - Federico V Pallardó
- Center for Biomedical Network Research on Rare Diseases (CIBERER), Institute of Health Carlos III, Valencia, Spain; INCLIVA Health Research Institute, Mixed Unit for Rare Diseases INCLIVA-CIPF, Valencia, Spain; Department of Physiology, Faculty of Medicine and Dentistry, University of Valencia, Valencia, Spain
| | - José Luis García-Giménez
- Center for Biomedical Network Research on Rare Diseases (CIBERER), Institute of Health Carlos III, Valencia, Spain; INCLIVA Health Research Institute, Mixed Unit for Rare Diseases INCLIVA-CIPF, Valencia, Spain; Department of Physiology, Faculty of Medicine and Dentistry, University of Valencia, Valencia, Spain.
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Chen L, Tian Q, Shi Z, Qiu Y, Lu Q, Liu C. Melatonin Alleviates Cardiac Function in Sepsis-Caused Myocarditis via Maintenance of Mitochondrial Function. Front Nutr 2021; 8:754235. [PMID: 34708067 PMCID: PMC8542660 DOI: 10.3389/fnut.2021.754235] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 09/10/2021] [Indexed: 12/13/2022] Open
Abstract
Melatonin (N-acetyl-5-methoxytryptamine) has been shown to have a cardioprotective effect against myocarditis. However, the mechanisms underlying the protective role of melatonin (MLT) in sepsis-induced myocarditis are yet to be revealed. In this study, MLT was administrated to mice, 14 days before cecal ligation puncture surgery. Echocardiography results showed that MLT alleviated cardiac dysfunction in sepsis-induced myocarditis. Furthermore, MLT reduced cardiac inflammation by inhibiting the expression of Il-1α, Il-1β, Il-6, and Mcp-1 messenger RNA (mRNA) levels. The RNA sequencing (RNA-seq) assays with heart tissues showed that MLT maintains the mitochondrial function in sepsis-caused myocarditis. Additionally, the production of reactive oxygen species (ROS) in heart tissues was suppressed by MLT. Taken together, in evaluating the therapeutic effect of MLT on sepsis-induced myocarditis, the results showed that MLT alleviated cardiac damage by regulating mitochondrial function and mitochondrial ROS.
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Affiliation(s)
- Liyang Chen
- Key Laboratory of Cardiovascular and Cerebrovascular Medicine, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Nanjing Medical University, Nanjing, China
| | - Qing Tian
- Intensive Care Unit of Wuhan Asia Heart Hospital, Wuhan, China
| | - Zhiguang Shi
- Key Laboratory of Cardiovascular and Cerebrovascular Medicine, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Nanjing Medical University, Nanjing, China
| | - Yu Qiu
- Center for Molecular and Translational Medicine, Georgia State University, Atlanta, GA, United States
| | - Qiulun Lu
- Key Laboratory of Cardiovascular and Cerebrovascular Medicine, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Nanjing Medical University, Nanjing, China
| | - Chao Liu
- Hubei Key Laboratory of Diabetes and Angiopathy, Hubei University of Science and Technology, Xianning, China
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Xiong Y, Wang Y, Tian H, Li Y, Xu Q, He Z. Circ-PRKCI Alleviates Lipopolysaccharide-induced Human Kidney 2 Cell Injury by Regulating miR-106b-5p/GAB1 Axis. J Cardiovasc Pharmacol 2021; 78:523-533. [PMID: 34269703 DOI: 10.1097/fjc.0000000000001031] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 03/19/2021] [Indexed: 11/26/2022]
Abstract
ABSTRACT Circular RNAs act as vital regulators in diverse diseases. However, the investigation of circular RNAs in sepsis-engendered acute kidney injury remains dismal. We aimed to explore the effects of circular RNA protein kinase C iota (circ-PRKCI) in lipopolysaccharide (LPS)-mediated HK2 cell injury. Sepsis in vitro model was established by LPS treatment. Quantitative real-time polymerase chain reaction assay was conducted for determining the levels of circ-PRKCI, microRNA-106b-5p (miR-106b-5p), and growth factor receptor binding 2-associated binding protein 1 (GAB1). Cell viability and apoptosis were evaluated using Cell Counting Kit-8 assay and flow cytometry analysis, respectively. The concentrations of interleukin-6, interleukin-1β, and tumor necrosis factor-α were measured with enzyme-linked immunosorbent assay kits. The levels of oxidative stress markers were determined using relevant commercial kits. Western blot assay was conducted for B-cell lymphoma-2 (Bcl-2), BCL2-Associated X (Bax), and GAB1 protein levels. Dual-luciferase reporter assay and RNA immunoprecipitation assay were used to verify the association between miR-106b-5p and circ-PRKCI or GAB1. We found the Circ-PRKCI level was decreased in sepsis patients and LPS-induced human kidney 2 (HK-2) cells. LPS exposure inhibited cell viability and facilitated apoptosis, inflammation, and oxidative stress in HK-2 cells. Circ-PRKCI overexpression abrogated the effects of LPS on cell apoptosis, inflammation, and oxidative stress in HK-2 cells. Furthermore, circ-PRKCI was identified as the sponge for miR-106b-5p to positively regulate GAB1 expression. Overexpression of circ-PRKCI relieved LPS-mediated HK-2 cell damage by sponging miR-106b-5p. MiR-106b-5p inhibition ameliorated the injury of HK-2 cells mediated by LPS, whereas GAB1 knockdown reversed the effect. Collectively, Circ-PRKCI overexpression attenuated LPS-induced HK-2 cell injury by regulating miR-106b-5p/GAB1 axis.
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Affiliation(s)
- Yueli Xiong
- Department of Infectious Diseases, Huaihe Hospital of Henan University, Kaifeng, Henan, China; and
| | - Yang Wang
- Department of Ultrasound, Huaihe Hospital of Henan University, Kaifeng, Henan, China
| | - Hui Tian
- Department of Infectious Diseases, Huaihe Hospital of Henan University, Kaifeng, Henan, China; and
| | - Yuanyuan Li
- Department of Infectious Diseases, Huaihe Hospital of Henan University, Kaifeng, Henan, China; and
| | - Qingjie Xu
- Department of Infectious Diseases, Huaihe Hospital of Henan University, Kaifeng, Henan, China; and
| | - Zhenkun He
- Department of Infectious Diseases, Huaihe Hospital of Henan University, Kaifeng, Henan, China; and
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Oliveira RADC, Imparato DO, Fernandes VGS, Cavalcante JVF, Albanus RD, Dalmolin RJS. Reverse Engineering of the Pediatric Sepsis Regulatory Network and Identification of Master Regulators. Biomedicines 2021; 9:biomedicines9101297. [PMID: 34680414 PMCID: PMC8533457 DOI: 10.3390/biomedicines9101297] [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: 05/29/2021] [Revised: 07/26/2021] [Accepted: 07/26/2021] [Indexed: 01/04/2023] Open
Abstract
Sepsis remains a leading cause of death in ICUs all over the world, with pediatric sepsis accounting for a high percentage of mortality in pediatric ICUs. Its complexity makes it difficult to establish a consensus on genetic biomarkers and therapeutic targets. A promising strategy is to investigate the regulatory mechanisms involved in sepsis progression, but there are few studies regarding gene regulation in sepsis. This work aimed to reconstruct the sepsis regulatory network and identify transcription factors (TFs) driving transcriptional states, which we refer to here as master regulators. We used public gene expression datasets to infer the co-expression network associated with sepsis in a retrospective study. We identified a set of 15 TFs as potential master regulators of pediatric sepsis, which were divided into two main clusters. The first cluster corresponded to TFs with decreased activity in pediatric sepsis, and GATA3 and RORA, as well as other TFs previously implicated in the context of inflammatory response. The second cluster corresponded to TFs with increased activity in pediatric sepsis and was composed of TRIM25, RFX2, and MEF2A, genes not previously described as acting in a coordinated way in pediatric sepsis. Altogether, these results show how a subset of master regulators TF can drive pathological transcriptional states, with implications for sepsis biology and treatment.
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Affiliation(s)
- Raffael Azevedo de Carvalho Oliveira
- Bioinformatics Multidisciplinary Environment–BioME, Instituto Metrópole Digital, Universidade Federal do Rio Grande do Norte, Natal 59078-400, Brazil; (R.A.d.C.O.); (D.O.I.); (V.G.S.F.); (J.V.F.C.)
| | - Danilo Oliveira Imparato
- Bioinformatics Multidisciplinary Environment–BioME, Instituto Metrópole Digital, Universidade Federal do Rio Grande do Norte, Natal 59078-400, Brazil; (R.A.d.C.O.); (D.O.I.); (V.G.S.F.); (J.V.F.C.)
| | - Vítor Gabriel Saldanha Fernandes
- Bioinformatics Multidisciplinary Environment–BioME, Instituto Metrópole Digital, Universidade Federal do Rio Grande do Norte, Natal 59078-400, Brazil; (R.A.d.C.O.); (D.O.I.); (V.G.S.F.); (J.V.F.C.)
| | - João Vitor Ferreira Cavalcante
- Bioinformatics Multidisciplinary Environment–BioME, Instituto Metrópole Digital, Universidade Federal do Rio Grande do Norte, Natal 59078-400, Brazil; (R.A.d.C.O.); (D.O.I.); (V.G.S.F.); (J.V.F.C.)
| | - Ricardo D’Oliveira Albanus
- Department of Computational Medicine & Bioinformatics, University of Michigan, Ann Arbor, MI 48109, USA;
| | - Rodrigo Juliani Siqueira Dalmolin
- Bioinformatics Multidisciplinary Environment–BioME, Instituto Metrópole Digital, Universidade Federal do Rio Grande do Norte, Natal 59078-400, Brazil; (R.A.d.C.O.); (D.O.I.); (V.G.S.F.); (J.V.F.C.)
- Department of Biochemistry–DBQ–CB, Federal University of Rio Grande do Norte, Natal 59064-741, Brazil
- Correspondence:
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Qiu Y, Yu Y, Qin XM, Jiang T, Tan YF, Ouyang WX, Xiao ZH, Li SJ. CircTLK1 modulates sepsis-induced cardiomyocyte apoptosis via enhancing PARP1/HMGB1 axis-mediated mitochondrial DNA damage by sponging miR-17-5p. J Cell Mol Med 2021; 25:8244-8260. [PMID: 34410682 PMCID: PMC8419196 DOI: 10.1111/jcmm.16738] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 05/10/2021] [Accepted: 06/05/2021] [Indexed: 02/06/2023] Open
Abstract
Introduction Septic cardiomyopathy is a common complication of sepsis with high morbidity and mortality, but lacks specific therapy. This study aimed to reveal the role of circTLK1 and its potential mechanisms in septic cardiomyopathy. Materials and Methods The in vitro and in vivo models of septic cardiomyopathy were established. Cell viability and apoptosis were detected by CCK8, TUNEL and flow cytometry, respectively. LDH, CK, SOD, MDA, ATP, 8‐OHdG, NAD+/NADH ratio, ROS level, mitochondrial membrane potential and cytochrome C distribution were evaluated using commercial kits. qRT‐PCR and western blotting were performed to detect RNA and protein levels. Mitochondrial DNA (mtDNA) copy number and transcription were assessed by quantitative PCR. Dual‐luciferase assay, RNA immunoprecipitation and co‐immunoprecipitation were performed to verify the interaction between circTLK1/PARP1 and miR‐17‐5p. Results CircTLK1, PARP1 and HMGB1 were up‐regulated in the in vitro and in vivo models of septic cardiomyopathy. CircTLK1 inhibition restrained LPS‐induced up‐regulation of PARP1 and HMGB1. Moreover, circTLK1 knockdown repressed sepsis‐induced mtDNA oxidative damage, mitochondrial dysfunction and consequent cardiomyocyte apoptosis by inhibiting PARP1/HMGB1 axis in vitro and in vivo. In addition, circTLK1 enhanced PARP1 expression via sponging miR‐17‐5p. Inhibition of miR‐17‐5p abolished the protective effects of circTLK1 silencing on oxidative mtDNA damage and cardiomyocyte apoptosis. Conclusion CircTLK1 sponged miR‐17‐5p to aggravate mtDNA oxidative damage, mitochondrial dysfunction and cardiomyocyte apoptosis via activating PARP1/HMGB1 axis during sepsis, indicating that circTLK1 may be a putative therapeutic target for septic cardiomyopathy.
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Affiliation(s)
- Yu Qiu
- Emergency Center, Hunan Children's Hospital, Changsha, China
| | - Ying Yu
- Department of Hepatopathy, Hunan Children's Hospital, Changsha, China
| | - Xiao-Mei Qin
- Department of Hepatopathy, Hunan Children's Hospital, Changsha, China
| | - Tao Jiang
- Department of Hepatopathy, Hunan Children's Hospital, Changsha, China
| | - Yan-Fang Tan
- Department of Hepatopathy, Hunan Children's Hospital, Changsha, China
| | - Wen-Xian Ouyang
- Department of Hepatopathy, Hunan Children's Hospital, Changsha, China
| | - Zheng-Hui Xiao
- Emergency Center, Hunan Children's Hospital, Changsha, China
| | - Shuang-Jie Li
- Department of Hepatopathy, Hunan Children's Hospital, Changsha, China
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28
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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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29
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Falcão-Holanda RB, Brunialti MKC, Jasiulionis MG, Salomão R. Epigenetic Regulation in Sepsis, Role in Pathophysiology and Therapeutic Perspective. Front Med (Lausanne) 2021; 8:685333. [PMID: 34322502 PMCID: PMC8312749 DOI: 10.3389/fmed.2021.685333] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 06/09/2021] [Indexed: 12/12/2022] Open
Abstract
Sepsis is characterized by an initial hyperinflammatory response, with intense cell activation and cytokine storm. In parallel, a prolonged compensatory anti-inflammatory response, known as immunological tolerance, can lead to immunosuppression. Clinically, this condition is associated with multiple organ failure, resulting in the patient's death. The mechanisms underlying the pathophysiology of sepsis are not yet fully understood, but evidence is strong showing that epigenetic changes, including DNA methylation and post-translational modifications of histones, modulate the inflammatory response of sepsis. During the onset of infection, host cells undergo epigenetic changes that favor pathogen survival. Besides, epigenetic changes in essential genes also orchestrate the patient's inflammatory response. In this review, we gathered studies on sepsis and epigenetics to show the central role of epigenetic mechanisms in various aspects of the pathogenesis of sepsis and the potential of epigenetic interventions for its treatment.
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Affiliation(s)
- Renata Brito Falcão-Holanda
- Division of Infectious Diseases, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Milena Karina Colo Brunialti
- Division of Infectious Diseases, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Miriam Galvonas Jasiulionis
- Department of Pharmacology, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Reinaldo Salomão
- Division of Infectious Diseases, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
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30
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Zhang X, Dong S. Circ_0091702 relieves lipopolysaccharide (LPS)-induced cell injury by regulating the miR-182/PDE7A axis in sepsis. Biosci Biotechnol Biochem 2021; 85:1962-1970. [PMID: 34077501 DOI: 10.1093/bbb/zbab100] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 03/08/2021] [Indexed: 01/15/2023]
Abstract
Circular RNA (circRNA) plays an important role in the progression of sepsis. Circ_0091702 has been found to be an important regulator of sepsis progression, so its role and mechanism in sepsis progression deserve to be further explored. LPS could suppress cell viability, while enhance cell apoptosis and inflammation to induce cell injury. Circ_0091702 was downregulated in LPS-induced HK2 cells, and its overexpression alleviated LPS-induced cell injury. MiR-182 could be sponged by circ_0091702. Moreover, miR-182 inhibitor could relieve LPS-induced cell injury, and its overexpression also reversed the inhibition of circ_0091702 on LPS-induced cell injury. PDE7A was a target of miR-182, and its expression was reduced in LPS-induced HK2 cells. Additionally, silencing of PDE7A reversed the suppressive effect of circ_0091702 on LPS-induced cell injury. Our data suggested that circ_0091702 sponged miR-182 to regulate PDE7A, thereby alleviating LPS-induced cell injury in sepsis.
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Affiliation(s)
- Xinliang Zhang
- Departmentof Emergency, The Third Hospital of Hebei Medical University, Shijiazhuang, 050051, Hebei, China
| | - Shimin Dong
- Departmentof Emergency, The Third Hospital of Hebei Medical University, Shijiazhuang, 050051, Hebei, China
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31
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Gu YY, Dou JY, Huang XR, Liu XS, Lan HY. Transforming Growth Factor-β and Long Non-coding RNA in Renal Inflammation and Fibrosis. Front Physiol 2021; 12:684236. [PMID: 34054586 PMCID: PMC8155637 DOI: 10.3389/fphys.2021.684236] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 04/06/2021] [Indexed: 12/17/2022] Open
Abstract
Renal fibrosis is one of the most characterized pathological features in chronic kidney disease (CKD). Progressive fibrosis eventually leads to renal failure, leaving dialysis or allograft transplantation the only clinical option for CKD patients. Transforming growth factor-β (TGF-β) is the key mediator in renal fibrosis and is an essential regulator for renal inflammation. Therefore, the general blockade of the pro-fibrotic TGF-β may reduce fibrosis but may risk promoting renal inflammation and other side effects due to the diverse role of TGF-β in kidney diseases. Long non-coding RNAs (lncRNAs) are RNA transcripts with more than 200 nucleotides and have been regarded as promising therapeutic targets for many diseases. This review focuses on the importance of TGF-β and lncRNAs in renal inflammation, fibrogenesis, and the potential applications of TGF-β and lncRNAs as the therapeutic targets and biomarkers in renal fibrosis and CKD are highlighted.
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Affiliation(s)
- Yue-Yu Gu
- Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome, Department of Nephrology, Guangdong Provincial Hospital of Chinese Medicine, Second Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, China.,Department of Medicine and Therapeutics, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | - Jing-Yun Dou
- Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome, Department of Nephrology, Guangdong Provincial Hospital of Chinese Medicine, Second Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, China.,Department of Nephrology, Weihai Hospital of Traditional Chinese Medicine, Weihai, China
| | - Xiao-Ru Huang
- Department of Medicine and Therapeutics, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China.,Guangdong-Hong Kong Joint Laboratory for Immunity and Genetics of Chronic Kidney Disease, Guangdong Academy of Medical Sciences, Guangdong Provincial People's Hospital, Guangzhou, China
| | - Xu-Sheng Liu
- Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome, Department of Nephrology, Guangdong Provincial Hospital of Chinese Medicine, Second Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Hui-Yao Lan
- Department of Medicine and Therapeutics, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China.,Guangdong-Hong Kong Joint Laboratory for Immunity and Genetics of Chronic Kidney Disease, The Chinese University of Hong Kong, Hong Kong, China
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32
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Zhang X, Cui Y, Ding X, Liu S, Han B, Duan X, Zhang H, Sun T. Analysis of mRNA‑lncRNA and mRNA‑lncRNA-pathway co‑expression networks based on WGCNA in developing pediatric sepsis. Bioengineered 2021; 12:1457-1470. [PMID: 33949285 PMCID: PMC8806204 DOI: 10.1080/21655979.2021.1908029] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Pediatric sepsis is a great threat to death worldwide. However, the pathogenesis has not been clearly understood until now in sepsis. This study identified differentially expressed mRNAs and lncRNAs based on Gene Expression Omnibus (GEO) database. And the weighted gene co-expression network analysis (WGCNA) was performed to explore co-expression modules associated with pediatric sepsis. Then, Gene Ontology (GO), KEGG (Kyoto Encyclopedia of Genes and Genomes) pathway, mRNA‑lncRNA and mRNA‑lncRNA-pathway co-expression network analysis was conducted in selected significant module. A total of 1941 mRNAs and 225 lncRNAs were used to conduct WGCNA. And turquoise module was selected as a significant module that was associated with particular traits. The mRNAs functions associated with many vital processes were also shown by GO and KEGG pathway analysis in the turquoise module. Finally, 15 mRNAs (MAPK14, ITGAM, HK3, ALOX5, CR1, HCK, NCF4, PYGL, FLOT1, CARD6, NLRC4, SH3GLB1, PGS1, RAB31, LTB4R) and 4 lncRNAs (GSEC, NONHSAT160878.1, XR_926068.1 and RARA-AS1) were selected as hub genes in mRNA‑lncRNA-Pathway co-expression network. We identified 15 mRNAs and 4 lncRNAs as diagnostic markers, which have potential functions in pediatric sepsis. Our study provides more directions to study the molecular mechanism of pediatric sepsis.Abbreviations: mRNA: messenger RNA; lncRNA: long noncoding RNAs; GEO: Gene Expression Omnibus; WGCNA: weighted gene co-expression network analysis; GO: Gene Ontology; KEGG: Kyoto Encyclopedia of Genes and Genomes; SIRS: systemic inflammatory response syndrome; TOM: topological overlap measure; BP: biological process; MF: molecular function; CC: cellular component; ROC: receiver operating characteristic curve; AUC: area under curve; MAPK14: Mitogen-activated protein kinase 14; ALI: acute lung injury; ITGAM: Integrin subunit alpha M; HK3: Hexokinase 3; LPS: lipopolysaccharide; 5-LO: 5-lipoxygenase; LTs: leukotrienes; LTB4R: leukotriene B4 receptor.
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Affiliation(s)
- Xiaojuan Zhang
- General ICU, Zhengzhou Key Laboratory of Sepsis, Henan Engineering Research Center for Critical Care Medicine, the First Affiliated Hospital of Zhengzhou University, Henan Key Laboratory of Critical Care Medicine, Zhengzhou, China
| | - Yuqing Cui
- General ICU, Zhengzhou Key Laboratory of Sepsis, Henan Engineering Research Center for Critical Care Medicine, the First Affiliated Hospital of Zhengzhou University, Henan Key Laboratory of Critical Care Medicine, Zhengzhou, China
| | - Xianfei Ding
- General ICU, Zhengzhou Key Laboratory of Sepsis, Henan Engineering Research Center for Critical Care Medicine, the First Affiliated Hospital of Zhengzhou University, Henan Key Laboratory of Critical Care Medicine, Zhengzhou, China
| | - Shaohua Liu
- General ICU, Zhengzhou Key Laboratory of Sepsis, Henan Engineering Research Center for Critical Care Medicine, the First Affiliated Hospital of Zhengzhou University, Henan Key Laboratory of Critical Care Medicine, Zhengzhou, China
| | - Bing Han
- General ICU, Zhengzhou Key Laboratory of Sepsis, Henan Engineering Research Center for Critical Care Medicine, the First Affiliated Hospital of Zhengzhou University, Henan Key Laboratory of Critical Care Medicine, Zhengzhou, China
| | - Xiaoguang Duan
- General ICU, Zhengzhou Key Laboratory of Sepsis, Henan Engineering Research Center for Critical Care Medicine, the First Affiliated Hospital of Zhengzhou University, Henan Key Laboratory of Critical Care Medicine, Zhengzhou, China
| | - Haibo Zhang
- Interdepartmental Division of Critical Care Medicine, Departments of Anesthesia and Physiology, University of Toronto, Toronto, Canada
| | - Tongwen Sun
- General ICU, Zhengzhou Key Laboratory of Sepsis, Henan Engineering Research Center for Critical Care Medicine, the First Affiliated Hospital of Zhengzhou University, Henan Key Laboratory of Critical Care Medicine, Zhengzhou, China
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33
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Qin G, Wei L, Jiang F, Li J, Zhang B, Pan D, Lu X. LncRNA NR024118 is downregulated in sepsis and inhibits LPS‑induced apoptosis of cardiomyocytes. Mol Med Rep 2021; 23:434. [PMID: 33846787 PMCID: PMC8060807 DOI: 10.3892/mmr.2021.12073] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 01/13/2021] [Indexed: 01/29/2023] Open
Abstract
It has been reported that lncRNA-NR024118 can suppress lipopolysaccharide (LPS)-induced inflammatory responses, which promote sepsis. The present study aimed to investigate the involvement of NR024118 in sepsis. Research subjects included 82 patients with sepsis without myocardial dysfunction (MD), 35 patients with sepsis with MD and 82 healthy controls. The expression levels of NR024118 in plasma collected from these participants and LPS-induced AC16 cells were measured by reverse transcription-quantitative PCR. The expression levels of IL-16 in these plasma samples and LPS-induced AC16 cells were measured by ELISA. The correlation between the expression levels of NR024118 and IL-6 across plasma samples were analyzed by Pearson's correlation coefficient. The action potential duration (APD) was measured at 50 and 90% repolarization. Cell apoptosis was determined by cell apoptosis assay. The expression levels of p-transcription factor p65 were detected by western blot analysis. NF-κB activity were analyzed by luciferase reporter assay. It was found that NR024118 was downregulated and IL-6 was upregulated in the plasma of patients with sepsis. Among patients with sepsis, the individuals with MD exhibited even lower expression levels of NR024118 and higher expression levels of IL-6. Among patients with sepsis with MD, the expression levels of NR024118 and IL-6 were inversely correlated. LPS could induce MD to construct the sepsis models based on the increased expression levels of TNF-α, IL-1β, IL-6 and shortened APD by LPS-mediated induction. Overexpression of NR024118 significantly reduced the secretion of IL-6 and apoptosis of cardiomyocytes under LPS treatment. Functional studies demonstrated that NR024118 had negative regulation on p65 phosphorylation and NF-κB activation. NR024118 was suppressed in sepsis and inhibited LPS-induced apoptosis of cardiomyocytes.
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Affiliation(s)
- Gang Qin
- ICU Department, Guangxi Zhuang Autonomous National Hospital, Nanning, Guangxi Zhuang Autonomous Region 530001, P.R. China
| | - Liuqing Wei
- ICU Department, Guangxi Zhuang Autonomous National Hospital, Nanning, Guangxi Zhuang Autonomous Region 530001, P.R. China
| | - Fufu Jiang
- ICU Department, Guangxi Zhuang Autonomous National Hospital, Nanning, Guangxi Zhuang Autonomous Region 530001, P.R. China
| | - Jiayan Li
- ICU Department, Guangxi Zhuang Autonomous National Hospital, Nanning, Guangxi Zhuang Autonomous Region 530001, P.R. China
| | - Bo Zhang
- ICU Department, Guangxi Zhuang Autonomous National Hospital, Nanning, Guangxi Zhuang Autonomous Region 530001, P.R. China
| | - Dongxu Pan
- ICU Department, Guangxi Zhuang Autonomous National Hospital, Nanning, Guangxi Zhuang Autonomous Region 530001, P.R. China
| | - Xinglin Lu
- ICU Department, Guangxi Zhuang Autonomous National Hospital, Nanning, Guangxi Zhuang Autonomous Region 530001, P.R. China
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Qi L, Yan Y, Chen B, Cao J, Liang G, Xu P, Wang Y, Ren Y, Mao G, Huang Z, Xu C, Jiang H. Research progress of circRNA as a biomarker of sepsis: a narrative review. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:720. [PMID: 33987418 PMCID: PMC8106021 DOI: 10.21037/atm-21-1247] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Objective Explore the possibility of circRNAs as markers of sepsis. Background Sepsis is an abnormal immune response of our body to infection that can lead to organ failure and death. Although the research on sepsis has been extensive in the past few years, sepsis-associated morbidity and mortality are still increasing. Early diagnosis and early treatment are important for patients with sepsis. Although many markers, including procalcitonin and C-reactive protein, have been proposed as diagnostic indicators of sepsis, there are still challenges in the early diagnosis and treatment of sepsis due to the lack of sensitivity and specificity of these substances. Recently, a large number of studies have found that circular RNAs (circRNAs) participate in a variety of biological functions, such as immune response, regulating the expression of miRNAs, and they are closely related to the occurrence and development of many diseases, including sepsis. However, the clear mechanism of the role of circRNAs has not been fully elucidated. An increasing number of studies have confirmed that circRNAs have potential in the diagnosis and treatment of sepsis. By studying the regulatory mechanism of circRNAs in sepsis, we can search for new molecular intervention targets for the treatment of sepsis, which is conducive to the development of new molecular therapeutic drugs for sepsis. Methods In the present study, we summarize and analyze the role of circRNAs in the pathogenesis of sepsis and discuss the possibility of circRNA as a biomarker for the diagnosis of sepsis. Conclusions The biological characteristics of circRNAs and their role in the occurrence and development of sepsis make them possible markers of sepsis.
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Affiliation(s)
- Lei Qi
- Department of Emergency Medicine, Affiliated Hospital of Nantong University, Nantong, China.,Rugao Branch Institute, Affiliated Hospital of Nantong University, Nantong, China
| | - Yan Yan
- Department of Emergency Medicine, Affiliated Hospital of Nantong University, Nantong, China
| | - Bairong Chen
- Department of Medical Laboratory, School of Public Health, Nantong University, Nantong, China
| | - Jiling Cao
- Department of Emergency Medicine, Affiliated Hospital of Nantong University, Nantong, China
| | - Guiwen Liang
- Department of Emergency Medicine, Affiliated Hospital of Nantong University, Nantong, China
| | - Pan Xu
- Department of Emergency Medicine, Affiliated Hospital of Nantong University, Nantong, China
| | - Yue Wang
- Department of Emergency Medicine, Affiliated Hospital of Nantong University, Nantong, China
| | - Yuting Ren
- Department of Emergency Medicine, Affiliated Hospital of Nantong University, Nantong, China
| | - Guomin Mao
- Department of Emergency Medicine, Affiliated Hospital of Nantong University, Nantong, China
| | - Zhongwei Huang
- Department of Emergency Medicine, Affiliated Hospital of Nantong University, Nantong, China
| | - Cheng Xu
- Department of Medical Imaging, Affiliated Hospital of Nantong University, Nantong, China
| | - Haiyan Jiang
- Department of Emergency Medicine, Affiliated Hospital of Nantong University, Nantong, China
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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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Lv R, Du L, Zhou F, Yuan X, Liu X, Zhang L. Rosmarinic Acid Alleviates Inflammation, Apoptosis, and Oxidative Stress through Regulating miR-155-5p in a Mice Model of Parkinson's Disease. ACS Chem Neurosci 2020; 11:3259-3266. [PMID: 32946211 DOI: 10.1021/acschemneuro.0c00375] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Parkinson's disease (PD) is the second most common neurodegenerative disorder mainly occurring in the elderly. MicroRNA-155-5p (miR-155-5p) plays a vital role in neurodegenerative disease and has been reported to be regulated by rosmarinic acid (RA). In our previous study, it was found that RA could improve motor function and alleviate inflammatory responses in a mice model of PD. This study aimed to investigate the role of miR-155-5p in RA-treated PD mice. The PD mice model was established by injecting mice with N-methyl-4-phenyl-l,2,3,6-tetrahydropyridine (MPTP) and treated with RA or/and miR-155-5p agomir. The effects of miR-155-5p agomir on motor function, microglial activation, inflammation, apoptosis, and oxidative stress were analyzed by performing a behavioral test, ionized calcium-binding adapter molecule 1 staining, quantitative real-time PCR, Western blot, enzyme-linked immunosorbent assay, tyrosine hydroxylase (TH)-terminal dUTP nick end labeling double staining, TH-cleaved-caspase 3 double staining, and assessment of antioxidative parameters in RA-treated PD mice. The interaction between miR-155-5p and suppressor of cytokine signaling 1/nuclear factor erythroid 2-related factor 2 was validated using dual-luciferase reporter assay. MiR-155-5p up-regulation inhibited the alleviation of motor deficits caused by RA in PD mice, as evidenced by increasing descending time, decreasing limb movement score, increasing the time crossing the beam, and decreasing the times of front limb use. MiR-155-5p up-regulation could elevate microglial activation, inflammation, apoptosis, and oxidative stress in RA-treated PD mice. In conclusion, RA was able to alleviate PD by regulating miR-155-5p, suggesting that miR-155-5p could be used as a therapeutic target for PD treatment.
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Affiliation(s)
- Runxiao Lv
- Department of Rehabilitation, Shengjing Hospital of China Medical University, Shenyang 110004, People's Republic of China
| | - Lili Du
- Department of Pathophysiology, College of Basic Medical Science, China Medical University, Shenyang 110122, People's Republic of China
| | - Fenghua Zhou
- Department of Rehabilitation, Shengjing Hospital of China Medical University, Shenyang 110004, People's Republic of China
| | - Xiangnan Yuan
- Department of Rehabilitation, Shengjing Hospital of China Medical University, Shenyang 110004, People's Republic of China
| | - Xueyong Liu
- Department of Rehabilitation, Shengjing Hospital of China Medical University, Shenyang 110004, People's Republic of China
| | - Lixin Zhang
- Department of Rehabilitation, Shengjing Hospital of China Medical University, Shenyang 110004, People's Republic of China
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Shomali N, Mahmoodpoor A, Abbas Abad AN, Marofi F, Akbari M, Xu H, Sandoghchian Shotorbani S. The Relationship between Extracellular/intracellular microRNAs and TLRs May Be Used as a Diagnostic and Therapeutic Approach in Sepsis. Immunol Invest 2020; 51:154-169. [PMID: 33054447 DOI: 10.1080/08820139.2020.1817067] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
One of the leading causes of death in the intensive care unit (ICU) is sepsis. Different studies have been performed on different markers to determine the cause of sepsis. microRNAs (miRNAs) are non-coding RNAs that can be released both inside and outside the cell and regulate the target gene expression by binding to the 3' untranslated region (3'UTR) of the target genes. TLRs play an important role in innate immunity that can be modulated by biological markers such as microRNAs. In this study, we summarized the recent progress on the role of extracellular and intracellular microRNAs in sepsis. It has also been focused on the association of TLRs with extracellular and intracellular micro RNAs in the regulation of sepsis. In conclusion, this study has provided new insight into the role of microRNAs as a regulator of the TLRs which may lead to the aberrant inflammatory response in sepsis. Therefore, it suggests that both intracellular and extracellular microRNAs may play a therapeutic role in the treatment of sepsis via regulating TLRs. However, yet sepsis and septic shock are medical emergencies and further studies are needed to specify the exact role of microRNAs and TLRs in sepsis.
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Affiliation(s)
- Navid Shomali
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran.,Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ata Mahmoodpoor
- Department of Anesthesiology and Intensive Care Medicine, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.,Cardiovascular Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Faroogh Marofi
- Department of Hematology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Morteza Akbari
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Huaxi Xu
- Department of Immunology, Jiangsu University, Zhenjiang, China
| | - Siamak Sandoghchian Shotorbani
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Immunology, Jiangsu University, Zhenjiang, China
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Maucher D, Schmidt B, Kuhlmann K, Schumann J. Polyunsaturated Fatty Acids of Both the Omega-3 and the Omega-6 Family Abrogate the Cytokine-Induced Upregulation of miR-29a-3p by Endothelial Cells. Molecules 2020; 25:molecules25194466. [PMID: 33003296 PMCID: PMC7583866 DOI: 10.3390/molecules25194466] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 09/17/2020] [Accepted: 09/27/2020] [Indexed: 11/16/2022] Open
Abstract
Cellular processes fundamentally depend on protein expression control. At this, protein expression is regulated on the transcriptional and the post-transcriptional level. PUFAs are already known to affect gene transcription. The present study was conducted to answer the question whether PUFAs are also able to impact on the miRNA-mediated post-transcriptional fine-tuning of mRNA copy numbers. To this end, cellular miRNA profiles were screened by means of next-generation sequencing and NanoString analysis to compare PUFA-enriched to unsupplemented endothelial cells exposed to an inflammatory milieu. Validation took place by droplet digital PCR, allowing for an absolute quantification of RNA copy numbers. The analyses revealed that the stimulation-induced upregulation of miR-29a-3p is blocked by PUFA enrichment of endothelial cells. What is more, mRNA copy numbers of miR-29a-3p targets, namely the coagulation factors PAI-1, TF, and vWF, as well as the proinflammatory cytokines IL-1β, IL-6, and IL-8, were reduced in PUFA-enriched endothelial cells compared to unsupplemented cells, counteracting the stimulatory effect of an inflammatory environment. These data hint toward a new mechanism of action by which PUFAs modulate the functionality of endothelial cells. Apparently, the inflammation-modulating properties of PUFAs are also mediated at the post-transcriptional level.
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Affiliation(s)
| | | | | | - Julia Schumann
- Correspondence: ; Tel.: +49-345-5571776; Fax: +49-345-5571781
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Liu T, Liu J, Tian C, Wang H, Wen M, Yan M. LncRNA THRIL is upregulated in sepsis and sponges miR-19a to upregulate TNF-α in human bronchial epithelial cells. JOURNAL OF INFLAMMATION-LONDON 2020; 17:31. [PMID: 32944003 PMCID: PMC7488348 DOI: 10.1186/s12950-020-00259-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Accepted: 08/18/2020] [Indexed: 12/23/2022]
Abstract
Background Long non-coding RNAs (lncRNAs) have been demonstrated to play critical roles in various diseases. Our bioinformatics analysis showed that lncRNA TNFα and heterogenous nuclear ribonucleoprotein L (hnRNPL) related immunoregulatory LincRNA (THRIL) may interact with miR-19a, which targets TNF-α. This study aimed to explore the role of THRIL, an enhancer of LPS-induced inflammatory, in sepsis. Methods Research subjects of the present study included 66 sepsis patients and 66 healthy volunteers. The expression levels of THRIL, miR-19a and TNF-α in plasma samples from these participants were determined by RT-qPCR. The interaction between THRIL and miR-19a was explored by performing overexpression experiments in human bronchial epithelial cells (HBEpCs). The roles of THRIL, miR-19a and TNF-α in regulating the apoptosis of HBEpCs were analyzed by cell apoptosis assay. Results We found that THRIL was upregulated in sepsis patients. THRIL is predicted to interact with miR-19a, and the interaction was confirmed by dual-luciferase activity assay. However, THRIL and miR-19a did not affect the expression of each other. Instead, overexpression of THRIL resulted in the increased expression levels of TNF-α, a downstream target of miR-19a in HBEpCs. In HBEpCs, LPS treatment induced the overexpression of THRIL. Cell apoptosis analysis showed that overexpression of THRIL and TNF-α promoted the apoptosis of HBEpCs induced by LPS, while overexpression of miR-19a played an opposite role. Overexpression of THRIL attenuated the effects of overexpression of miR-19a. Conclusion Therefore, THRIL is upregulated in sepsis and may sponge miR-19a to upregulate TNF-α, thereby promoting lung cell apoptosis.
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Affiliation(s)
- Tao Liu
- Department of Respiratory and Critical Care Medicine, Inner Mongolia Baogang Hospital (The Third Affiliated Hospital of Inner Mongolia Medical University), Baotou, 014032 Inner Mongolia China
| | - Jingbin Liu
- Department of Respiratory Medicine, Hospital of FIRMACO (The Fourth Affiliated Hospital of Inner Mongolia Medical University), Baotou, 014032 Inner Mongolia China
| | - Chunhua Tian
- Department of Nephrology, Inner Mongolia Baogang Hospital (The Third Affiliated Hospital of Inner Mongolia Medical University), No.20 Shaoxian Road, Kundulun District, Baotou City, 014032 Inner Mongolia China
| | - Hongyuan Wang
- Department of Dental department, Hospital of FIRMACO (The Fourth Affiliated Hospital of Inner Mongolia Medical University), Baotou, 014032 Inner Mongolia China
| | - Min Wen
- Department of Pharmacy, Hospital of FIRMACO (The Fourth Affiliated Hospital of Inner Mongolia Medical University), Baotou, 014032 Inner Mongolia China
| | - Mingyu Yan
- Department of Respiratory and Critical Care Medicine, Inner Mongolia Baogang Hospital (The Third Affiliated Hospital of Inner Mongolia Medical University), Baotou, 014032 Inner Mongolia China
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Chen W, Liu L, Yang J, Wang Y. MicroRNA-146b correlates with decreased acute respiratory distress syndrome risk, reduced disease severity, and lower 28-day mortality in sepsis patients. J Clin Lab Anal 2020; 34:e23510. [PMID: 32845540 PMCID: PMC7755760 DOI: 10.1002/jcla.23510] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 07/10/2020] [Accepted: 07/19/2020] [Indexed: 01/13/2023] Open
Abstract
Objective This study aimed to investigate the predictive value of microRNA‐146b (miR‐146b) on acute respiratory distress syndrome (ARDS) risk, and the correlation of miR‐146b with disease severity and 28‐day mortality in sepsis patients. Methods A total of 104 sepsis patients and 100 healthy controls (HCs) were consecutively enrolled, and miR‐146b relative expression in their plasma samples was detected by reverse transcription‐quantitative polymerase chain reaction. In sepsis patients, disease severity was assessed using Acute Physiology and Chronic Health Evaluation II (APACHE II) score and Sequential Organ Failure Assessment (SOFA) score. ARDS occurrence and 28‐day mortality were recorded. Results MiR‐146b was decreased in sepsis patients compared to HCs. ARDS occurred in 30 (28.8%) sepsis patients, and miR‐146b was reduced in ARDS sepsis patients compared to non‐ARDS sepsis patients. Meanwhile, miR‐146b distinguished ARDS sepsis patients from non‐ARDS sepsis patients (area under the curve (AUC): 0.728, 95% confidence interval (CI): 0.627‐0.829). Subsequent multivariate logistic regression showed that miR‐146b, age, smoke, respiratory infection, and serum creatinine predicted ARDS risk independently, and their combination well‐discriminated ARDS sepsis patients from non‐ARDS sepsis patients (AUC: 0.863, 95% CI: 0.792‐0.934). Additionally, miR‐146b was negatively correlated with serum creatinine, white blood cell, C‐reactive protein, APACHE II score, and SOFA score, while positively correlated with albumin. Regarding prognosis, miR‐146b was decreased in 28‐day sepsis deaths compared to 28‐day sepsis survivors, and it discriminated 28‐day sepsis deaths from 28‐day sepsis survivors (AUC: 0.785, 95% CI: 0.680‐0.890). Conclusion MiR‐146b might serve as a potential biomarker for ARDS prevention and prognostic reflection in sepsis.
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Affiliation(s)
- Wenfeng Chen
- Department of Intensive Care Unit, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Lili Liu
- Department of Intensive Care Unit, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Junhui Yang
- Department of Intensive Care Unit, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yujun Wang
- Department of Intensive Care Unit, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Chen S, Ding R, Hu Z, Yin X, Xiao F, Zhang W, Yan S, Lv C. MicroRNA-34a Inhibition Alleviates Lung Injury in Cecal Ligation and Puncture Induced Septic Mice. Front Immunol 2020; 11:1829. [PMID: 32903604 PMCID: PMC7438583 DOI: 10.3389/fimmu.2020.01829] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 07/08/2020] [Indexed: 12/29/2022] Open
Abstract
Sepsis is the leading cause of death in intensive care units. MicroRNA-34a (miR-34a) is involved in sepsis progression, while its underlying mechanisms on sepsis-induced lung injury remain obscure. Oxidative stress, pyroptosis, and inhibition of autophagy can result in organ injury. MiR-34a has been reported to regulate oxidative stress and autophagy via inhibiting silent information regulator T1 (SIRT1) and autophagy gene 4B (ATG4B) signaling. This study aimed at identifying the function of miR-34a in oxidative stress, inflammation, pyroptosis, and autophagy in sepsis-induced lung injury. Male 8-week-old C57BL/6 mice were subjected to cecal ligation and puncture and treated with miR-34a antagomir/agomir. Survival (n = 10), histopathological changes (n = 6), and lung wet-to-dry ratio (n = 6) were recorded and assayed. Other detection (n = 6) was performed to investigate the level of oxidative stress, inflammation, pyroptosis, and autophagy in lung tissues. Results showed that miR-34a down-regulation ameliorated lung injury in septic mice as reflected by decreased lung injury scores (decrease from 3.00 ± 0.32 to 2.00 ± 0.32) and wet-to-dry ratio (0.36-fold decrease). MiR-34a down-regulation also decreased reactive oxygen species accumulation (0.36-fold decrease), and promoted superoxide dismutase activity and the expression of SIRT1 (1.24-fold increase), heme oxygenase-1 and nuclear factor erythroid 2 like 2 to inhibit oxidative stress in septic mice. Moreover, miR-34a down-regulation suppressed inflammatory response and pyroptosis in septic mice, as evidenced by decreased level of pro-inflammatory factors including tumor necrosis factor α, interleukin-6 (IL-6), IL-1β, and IL-18, activity of caspase-1 (0.51-fold decrease) and expression of nucleotide-binding domain and leucine-rich repeat protein-3 (0.48-fold decrease), apoptosis-associated speck-like protein containing a CARD, cleaved-caspase-1, and cleaved-gasdermin D (0.36-fold decrease), and increased level of anti-inflammatory factors IL-10. MiR-34a down-regulation also enhanced autophagy in septic mice as evidenced by more autolysosomes and elevated expressions of ATG4B (0.90-fold increase), beclin1, ATG9, and LC3 II/I. Among these experiments, miR-34a up-regulation showed opposite effects on oxidative stress, inflammatory response, pyroptosis, and autophagy in septic mice. Additionally, miR-34a could bind to the 3′-untranslated region of SIRT1 and ATG4B. In conclusion, our findings demonstrated that miR-34a was implicated in oxidative stress, inflammation, pyroptosis, and autophagy in the development of sepsis. MiR-34a inhibition had a potential to alleviate sepsis-induced lung injury.
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Affiliation(s)
- Song Chen
- Department of Trauma Intensive Care Unit, The First Affiliated Hospital of Hainan Medical University, Haikou, China.,Key Laboratory of Emergency and Trauma of Ministry of Education, Hainan Medical University, Haikou, China
| | - Renyu Ding
- Intensive Care Unit, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Ziwei Hu
- Intensive Care Unit, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Xiaohan Yin
- Intensive Care Unit, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Feng Xiao
- Department of Critical Care Medicine, The Central Hospital Affiliated to Shenyang Medical College, Shenyang, China
| | - Wei Zhang
- Key Laboratory of Emergency and Trauma of Ministry of Education, Hainan Medical University, Haikou, China.,Department of Emergency Medicine, The Second Affiliated Hospital of Hainan Medical University, Haikou, China.,Emergency and Trauma College, Hainan Medical University, Haikou, China
| | - Shijiao Yan
- Key Laboratory of Emergency and Trauma of Ministry of Education, Hainan Medical University, Haikou, China.,School of Public Health, Hainan Medical University, Haikou, China
| | - Chuanzhu Lv
- Department of Trauma Intensive Care Unit, The First Affiliated Hospital of Hainan Medical University, Haikou, China.,Key Laboratory of Emergency and Trauma of Ministry of Education, Hainan Medical University, Haikou, China.,Department of Emergency Medicine, The Second Affiliated Hospital of Hainan Medical University, Haikou, China.,Emergency and Trauma College, Hainan Medical University, Haikou, China
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42
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Yang Y, Yang L, Liu Z, Wang Y, Yang J. Long noncoding RNA NEAT 1 and its target microRNA-125a in sepsis: Correlation with acute respiratory distress syndrome risk, biochemical indexes, disease severity, and 28-day mortality. J Clin Lab Anal 2020; 34:e23509. [PMID: 32785981 PMCID: PMC7755762 DOI: 10.1002/jcla.23509] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 07/01/2020] [Accepted: 07/08/2020] [Indexed: 12/11/2022] Open
Abstract
Background Sepsis is one of the main contributors to in‐hospital deaths. This study aimed to evaluate the clinical roles of long noncoding RNA (lncRNA) nuclear‐enriched abundant transcript 1 (NEAT1) and microRNA (miR)‐125a in sepsis. Methods LncRNA NEAT1 and miR‐125a in plasma samples from 102 sepsis patients and 100 healthy controls (HCs) were detected by reverse transcription‐quantitative polymerase chain reaction. In sepsis patients, general disease severity was assessed by acute physiology and chronic health evaluation (APACHE) II score and sequential organ failure assessment (SOFA) score. Meanwhile, acute respiratory distress syndrome (ARDS) occurrence and mortality during 28 days were recorded. Results LncRNA NEAT1 was increased, but miR‐125a was decreased in sepsis patients compared to HCs, and in ARDS sepsis patients compared to non‐ARDS sepsis patients. The receiver's operative characteristic (ROC) curves revealed that higher lncRNA NEAT1 or lower miR‐125a had certain predictive value for ARDS risk. Further multivariate logistic regression revealed miR‐125a but not lncRNA NEAT1 was correlated with ARDS risk independently in sepsis patients. Additionally, lncRNA NEAT1 was positively, but miR‐125a was negatively correlated with APACHE II score and SOFA score in sepsis patients. Moreover, higher lncRNA NEAT1 and lower miR‐125a were observed in 28‐day deaths compared to 28‐day survivors and were correlated with increased accumulating mortality in sepsis patients. Conclusion LncRNA NEAT1 high expression and miR‐125a low expression correlate with increased ARDS risk, enhanced disease severity, higher 28‐day mortality, and negatively associate with each other in sepsis patients.
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Affiliation(s)
- Yongkai Yang
- Department of Critical Medicine, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Liu Yang
- Department of Critical Medicine, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhenqing Liu
- Department of Critical Medicine, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yujun Wang
- Department of Critical Medicine, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Junhui Yang
- Department of Critical Medicine, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Yuan C, Gu J, Wu J, Yin J, Zhang M, Miao H, Li J. Circular RNA expression in the lungs of a mouse model of sepsis induced by cecal ligation and puncture. Heliyon 2020; 6:e04532. [PMID: 32760833 PMCID: PMC7393531 DOI: 10.1016/j.heliyon.2020.e04532] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 05/23/2020] [Accepted: 07/21/2020] [Indexed: 12/26/2022] Open
Abstract
Circular RNAs (circRNAs) are novel endogenous RNAs with vital roles in the pathology of various diseases. However, their role in sepsis-induced lung injury is unknown. In this study, high-throughput gene sequencing was used to analyze the expression profiles of circRNAs in lung specimens of mice grouped by acute lung injury induced by cecal ligation and puncture (CLP) and sham. To identify differentially expressed circRNAs, the left lungs of sham (n = 3) and CLP (n = 3) mice were used for high-throughput sequencing. A total of 919 circRNAs were identified. Of these, 38 circRNAs showed significantly different expression levels between the groups (P < 0.05, fold change ≥2). The levels of 20 circRNAs were up-regulated and those of 18 others were down-regulated. In bioinformatics analysis of the source genes of these circRNAs, the genes were closely associated with the inflammatory response (e.g., the TGF-β, MAPK, Fc gamma R-mediated phagocytic, and VEGF pathways). Eight circRNAs with large intergroup differences, small intragroup differences, and high expression were selected for further validation by qRT-PCR. Two of the eight were significantly different. These two circRNAs were annotated with circRNA/miRNA interaction information downloaded from the TargetScan and miRanda databases and visualized. Our results provide novel insights into the roles of circRNAs in sepsis-induced acute lung injury.
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Affiliation(s)
- Caiyun Yuan
- Department of Pediatrics, Nantong Maternal and Child Health Care Hospital, Nantong, China
| | - Jie Gu
- Department of Emergency Medicine, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Jinhuan Wu
- Department of Emergency Medicine, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Jiangwen Yin
- Department of Emergency Medicine, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Mengjie Zhang
- Department of Emergency Medicine, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Hongjun Miao
- Department of Emergency Medicine, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Jun Li
- Department of Emergency Medicine, Children's Hospital of Nanjing Medical University, Nanjing, China
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Beltrán-García J, Osca-Verdegal R, Nacher-Sendra E, Pallardó FV, García-Giménez JL. Circular RNAs in Sepsis: Biogenesis, Function, and Clinical Significance. Cells 2020; 9:cells9061544. [PMID: 32630422 PMCID: PMC7349763 DOI: 10.3390/cells9061544] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 06/23/2020] [Accepted: 06/24/2020] [Indexed: 01/08/2023] Open
Abstract
Sepsis is a life-threatening condition that occurs when the body responds to an infection that damages it is own tissues. The major problem in sepsis is rapid, vital status deterioration in patients, which can progress to septic shock with multiple organ failure if not properly treated. As there are no specific treatments, early diagnosis is mandatory to reduce high mortality. Despite more than 170 different biomarkers being postulated, early sepsis diagnosis and prognosis remain a challenge for clinicians. Recent findings propose that circular RNAs (circRNAs) may play a prominent role in regulating the patients’ immune system against different pathogens, including bacteria and viruses. Mounting evidence also suggests that the misregulation of circRNAs is an early event in a wide range of diseases, including sepsis. Despite circRNA levels being altered in sepsis, the specific mechanisms controlling the dysregulation of these noncoding RNAs are not completely elucidated, although many factors are known to affect circRNA biogenesis. Therefore, there is a need to explore the molecular pathways that lead to this disorder. This review describes the role of this new class of regulatory RNAs in sepsis and the feasibility of using circRNAs as diagnostic biomarkers for sepsis, opening up new avenues for circRNA-based medicine.
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Affiliation(s)
- Jesús Beltrán-García
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, 28029 Madrid, Spain; (J.B.-G.); (F.V.P.)
- Instituto de Investigación Sanitaria INCLIVA, 46010 Valencia, Spain;
- Departamento de Fisiología, Facultad de Medicina y Odontología, Universitat de València, 46010 València, Spain;
| | - Rebeca Osca-Verdegal
- Instituto de Investigación Sanitaria INCLIVA, 46010 Valencia, Spain;
- Departamento de Fisiología, Facultad de Medicina y Odontología, Universitat de València, 46010 València, Spain;
| | - Elena Nacher-Sendra
- Departamento de Fisiología, Facultad de Medicina y Odontología, Universitat de València, 46010 València, Spain;
| | - Federico V. Pallardó
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, 28029 Madrid, Spain; (J.B.-G.); (F.V.P.)
- Instituto de Investigación Sanitaria INCLIVA, 46010 Valencia, Spain;
- Departamento de Fisiología, Facultad de Medicina y Odontología, Universitat de València, 46010 València, Spain;
| | - José Luis García-Giménez
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, 28029 Madrid, Spain; (J.B.-G.); (F.V.P.)
- Instituto de Investigación Sanitaria INCLIVA, 46010 Valencia, Spain;
- Departamento de Fisiología, Facultad de Medicina y Odontología, Universitat de València, 46010 València, Spain;
- Correspondence:
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Liu J, Liu Y, Zhang L, Chen Y, Du H, Wen Z, Wang T, Chen D. Down-regulation of circDMNT3B is conducive to intestinal mucosal permeability dysfunction of rats with sepsis via sponging miR-20b-5p. J Cell Mol Med 2020; 24:6731-6740. [PMID: 32383354 PMCID: PMC7299677 DOI: 10.1111/jcmm.15324] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 03/23/2020] [Accepted: 04/01/2020] [Indexed: 12/13/2022] Open
Abstract
Sepsis is a life‐threatening syndrome with a high risk of mortality, which is caused by the dysregulated host response to infection. We examined significant roles of circDMNT3B and miR‐20b‐5p in the intestinal mucosal permeability dysfunction of rats with sepsis. SD rats were randomly divided into 6 groups (n = 10/group): sham group, sepsis group, si‐negative control group, circDNMT3B‐si1 group, circDNMT3B‐si2 group and circDNMT3B‐si1 + anti‐miR‐20b‐5p group. The level of malondialdehyde (MDA) content, superoxide dismutase (SOD) activity, interleukin (IL)‐6 and IL‐10 levels were measured through ELISA assay kits. Cell survival rate and cell apoptosis were evaluated by Cell‐Counting Kit‐8 Assay and flow cytometry, respectively. Luciferase reporter assays were used to investigate interactions between miR‐20b‐5p circDMNT3B in HEK‐293T cells. Silencing circDNMT3B can significantly increase the level of d‐lactic acid, FD‐40, MDA, diamine oxidase, IL‐10 and IL‐6, compared with sepsis group, while the SOD activity was lower. Silencing circDNMT3B leads to oxidative damage and influence inflammatory factors level in intestinal tissue. CircDNMT3B was identified as a target gene of miR‐20b‐5p. Silencing circDNMT3B decreased cell survival and induced apoptosis in Caco2 cells treated with LPS, which was reversed by anti‐miR‐20b‐5p. MiR‐20b‐5p inhibitor remarkably down‐regulated mentioned‐above levels, in addition to up‐regulate SOD activity, which may relieve the damage of intestinal mucosal permeability caused by silencing circDNMT3B in sepsis rats. Down‐regulation of circDMNT3B was conducive to the dysfunction of intestinal mucosal permeability via sponging miR‐20b‐5p in sepsis rats, which may provide the novel strategy for sepsis treatment in the future.
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Affiliation(s)
- Jiao Liu
- Department of Critical Care Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Department of Critical Care Medicine, Ruijin Hospital North, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yongan Liu
- Department of Critical Care Medicine, Ruijin Hospital North, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Lidi Zhang
- Department of Critical Care Medicine, Ruijin Hospital North, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yizhu Chen
- Department of Critical Care Medicine, Ruijin Hospital North, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hangxiang Du
- Department of Critical Care Medicine, Ruijin Hospital North, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhenliang Wen
- Department of Critical Care Medicine, Ruijin Hospital North, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Tao Wang
- Department of Critical Care Medicine, Ruijin Hospital North, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Dechang Chen
- Department of Critical Care Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Department of Critical Care Medicine, Ruijin Hospital North, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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46
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Biomarkers for Point-of-Care Diagnosis of Sepsis. MICROMACHINES 2020; 11:mi11030286. [PMID: 32164268 PMCID: PMC7143187 DOI: 10.3390/mi11030286] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 03/06/2020] [Accepted: 03/07/2020] [Indexed: 12/18/2022]
Abstract
Sepsis is defined as a life-threatening organ dysfunction caused by a dysregulated host response to infection. In 2017, almost 50 million cases of sepsis were recorded worldwide and 11 million sepsis-related deaths were reported. Therefore, sepsis is the focus of intense research to better understand the complexities of sepsis response, particularly the twin underlying concepts of an initial hyper-immune response and a counter-immunological state of immunosuppression triggered by an invading pathogen. Diagnosis of sepsis remains a significant challenge. Prompt diagnosis is essential so that treatment can be instigated as early as possible to ensure the best outcome, as delay in treatment is associated with higher mortality. In order to address this diagnostic problem, use of a panel of biomarkers has been proposed as, due to the complexity of the sepsis response, no single marker is sufficient. This review provides background on the current understanding of sepsis in terms of its epidemiology, the evolution of the definition of sepsis, pathobiology and diagnosis and management. Candidate biomarkers of interest and how current and developing point-of-care testing approaches could be used to measure such biomarkers is discussed.
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47
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Salim RF, Sobeih AA, Abd El Kareem HM. Evaluation of the clinical value of circulating miR-101, miR-187 and miR-21 in neonatal sepsis diagnosis and prognosis. EGYPTIAN JOURNAL OF MEDICAL HUMAN GENETICS 2020. [DOI: 10.1186/s43042-020-00052-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Abstract
Background
Neonatal sepsis is considered as a complicated syndrome, which requires urgent intervention to avoid the unfavorable outcome. Thus, biomarkers that can either distinguish sepsis early or predict sepsis outcome are of critical need. Therefore, the aim of the current study was to investigate the clinical value of miR-187, miR-101, and miR-21 on neonatal sepsis diagnosis and prediction of prognosis. Fifty neonates with sepsis, 30 neonates with SIRS, and 20 healthy neonates were selected. Relative expression levels of the selected miRNAs were quantified by qRT-PCR. Serum CRP and PCT were analyzed.
Results
miR-101 and miR-187 expression levels were elevated in septic neonates compared with SIRS neonates and normal controls. The AUC of miR-101, miR-187, and PCT to predict sepsis diagnosis were 0.908, 789, and 0.856, respectively. miR-21 expression levels in non-survivors were significantly higher than in survivors. The AUC of miR-21, a score of neonatal acute physiology (SNAP-II), and PCT to detect the predictive mortality value were 0.793, 0.781, and 0.635, respectively. Survival analysis revealed that high miR-21 expression levels were related to low survival rates. miR-21 and SNAP II were independent risk factors for sepsis mortality, and the AUC of the two combined variables’ predictive probabilities was 0.926 and yielded a specificity of 91.2% and a sensitivity of 81.3%, which was higher than that of either miR-21 or SNAP II.
Conclusion
miR-101 might function as a hopeful diagnostic biomarker for neonatal sepsis. Additionally, miR-21 gained attention to be a valuable predictor for sepsis prognosis especially if combined with SNAP II.
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Sun W, Li H, Gu J. Up-regulation of microRNA-574 attenuates lipopolysaccharide- or cecal ligation and puncture-induced sepsis associated with acute lung injury. Cell Biochem Funct 2020; 38:847-858. [PMID: 32090367 DOI: 10.1002/cbf.3496] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 10/28/2019] [Accepted: 12/15/2019] [Indexed: 12/20/2022]
Abstract
Acute lung injury (ALI) is the most vulnerable organ in sepsis, however, its underlying mechanism remains unclear. Cell viability and apoptosis were detected by cell counting kit-8 and flow cytometry. The expressions of miR-574, Complement 3 (C3), glucose regulatory protein 78 (GRP78), C/EBP homologous protein (CHOP) and Caspase-12 were determined using quantitative real time (qRT)-PCR and Western blot. Histopathology of mice was stained by haematoxylin and eosin staining. The levels of tumour necrosis factor-α (TNF-α) and interleukin (IL)-1β were determined using ELISA. The expression of miR-574 was positively correlated with cell viability in lipopolysaccharide (LPS)-treated cells. Cell viability was improved and apoptosis was inhibited by mimics. Meanwhile, the levels of GRP78, CHOP and Caspase-12 were suppressed by mimics and agomir in LPS-treated human bronchial epithelial (HBE) cells and cecal ligation and puncture (CLP)-treated mice. In vivo, lung tissue damages were ameliorated by agomir, which also decreased the levels of neutrophils, macrophages and albumin. C3 was a target gene of miR-574 and could be decreased by mimics. SiC3 enhanced cell viability and inhibited apoptosis, however, it suppressed the mRNA levels of GRP78, CHOP and Caspase-12. Up-regulation of miR-574 attenuated sepsis-induced lung injury may be by promoting C3 down-regulation and reducing sepsis-induced endoplasmic reticulum stress (ERS). SIGNIFICANCE OF THE STUDY: Clinically, the mortality rate of ALI induced by sepsis remains at a high level, thus, clarifying the mechanism of induction of ALI through pathogen infection will provide a new target for clinical treatment of ALI. In this study, up-regulation of miR-574 attenuated sepsis-induced lung injury may be by promoting C3 down-regulation and reducing sepsis-induced ERS. Our study provides a deeper understanding of sepsis.
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Affiliation(s)
- Wenwen Sun
- Clinic and Research Center of Tuberculosis, Shanghai Key Lab of Tuberculosis, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Hong Li
- Clinic and Research Center of Tuberculosis, Shanghai Key Lab of Tuberculosis, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Jin Gu
- Clinic and Research Center of Tuberculosis, Shanghai Key Lab of Tuberculosis, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
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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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50
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Zhao D, Li S, Cui J, Wang L, Ma X, Li Y. Plasma miR-125a and miR-125b in sepsis: Correlation with disease risk, inflammation, severity, and prognosis. J Clin Lab Anal 2020; 34:e23036. [PMID: 32077163 PMCID: PMC7031612 DOI: 10.1002/jcla.23036] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 08/21/2019] [Accepted: 08/23/2019] [Indexed: 12/21/2022] Open
Abstract
OBJECTIVE This study aimed to explore the predictive value of microRNA (miR)-125a and miR-125b for sepsis risk, and their correlations with inflammation, disease severity, and 28-day mortality in sepsis patients. METHODS Totally, 150 sepsis patients and 150 healthy controls (HCs) were enrolled. Plasma samples were separated from blood samples obtained from sepsis patients and HCs to detect miR-125a and miR-125b expressions by real-time quantitative polymerase chain reaction. Besides, the 28-day mortality of sepsis patients was assessed. MiR-125a and miR-125b expressions were elevated in sepsis patients compared with HCs, and further receiver operating characteristics (ROC) curve analysis displayed that miR-125a (area under the curve (AUC): 0.749, 95% CI: 0.695-0.803) and miR-125b (AUC: 0.839, 95% CI: 0.795-0.882) could predict sepsis risk. As for inflammation, no correlation of miR-125a with C-reactive protein (CRP), tumor necrosis factor-α (TNF-α), interleukin (IL)-6, IL-17, and IL-23 was observed in sepsis patients, while miR-125b was positively associated with CRP, TNF-α, IL-6, IL-17, and IL-23. Regarding disease severity, miR-125a and miR-125b were positively correlated with acute physiology and chronic health care evaluation II and sequential organ failure assessment score in sepsis patients. Besides, ROC curve analysis exhibited that miR-125a failed to predict 28-day mortality risk (AUC: 0.588, 95% CI: 0.491-0.685) in sepsis patients, while miR-125b had a potential value in predicting elevated 28-day mortality risk (AUC: 0.699, 95% CI: 0.603-0.795). CONCLUSION Both miR-125a and miR-125b predict sepsis risk, while only miR-125b exhibits the potency for disease management and prognosis prediction in sepsis patients.
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Affiliation(s)
- Danna Zhao
- Department of LaboratoryCangzhou People HospitalCangzhouChina
| | - Shilei Li
- Department of EmergencyCangzhou Central HospitalCangzhouChina
| | - Jie Cui
- Department of EmergencyCangzhou Central HospitalCangzhouChina
| | - Lizeng Wang
- Department of EmergencyCangzhou Central HospitalCangzhouChina
| | - Xiaohua Ma
- Department of EmergencyCangzhou Central HospitalCangzhouChina
| | - Yong Li
- Department of EmergencyCangzhou Central HospitalCangzhouChina
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