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Yin Y, Qiu Z, Lei Y, Huang J, Sun Y, Liu H, Wu W, Wang X, Shu Y, Zheng Q, Fang S. Screening and identification of specific cluster miRNAs in N2a cells infected by H7N9 virus. Virus Genes 2023; 59:716-722. [PMID: 37395889 DOI: 10.1007/s11262-023-01996-y] [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: 02/28/2023] [Accepted: 04/10/2023] [Indexed: 07/04/2023]
Abstract
This study aims to screen and identify specific cluster miRNAs of H7N9 virus-infected N2a cells and explore the possible pathogenesis of these miRNAs. The N2a cells are infected with H7N9 and H1N1 influenza viruses, and the cells are collected at 12, 24 and 48 h to extract total RNA. To sequence miRNAs and identify different virus-specific miRNAs, high-throughput sequencing technology is used. Fifteen H7N9 virus-specific cluster miRNAs are screened, and eight of them are included in the miRBase database. These cluster-specific miRNAs regulate many signaling pathways, such as the PI3K-Akt signaling pathway, the RAS signaling pathway, the cAMP signaling pathway, actin cytoskeleton regulation and cancer-related genes. The study provides a scientific basis for the pathogenesis of H7N9 avian influenza, which is regulated by miRNAs.
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Affiliation(s)
- Yitong Yin
- Jinan University, College of Pharmacy, Guangzhou, 510632, China
| | - Zengzhao Qiu
- National Sun yat-sen University, Public Health Hospital (Shenzhen), Shenzhen, 518107, China
| | - Yuxuan Lei
- National Sun yat-sen University, Public Health Hospital (Shenzhen), Shenzhen, 518107, China
| | - Jia Huang
- Guangdong Pharmaceutical University, Public Health College, Guangzhou, 510006, China
| | - Ying Sun
- Shenzhen Center for Disease Control and Prevention, Shenzhen, 518055, China
| | - Hui Liu
- Shenzhen Center for Disease Control and Prevention, Shenzhen, 518055, China
| | - Weihua Wu
- Shenzhen Center for Disease Control and Prevention, Shenzhen, 518055, China
| | - Xin Wang
- Shenzhen Center for Disease Control and Prevention, Shenzhen, 518055, China
| | - Yuelong Shu
- National Sun yat-sen University, Public Health Hospital (Shenzhen), Shenzhen, 518107, China
- Institute of Pathogen Biology, Chinese Academy of Medical Sciences & Peking Union Medical College CN, Beijing, 102206, China
| | - Qing Zheng
- Jinan University, College of Pharmacy, Guangzhou, 510632, China.
| | - Shisong Fang
- Shenzhen Center for Disease Control and Prevention, Shenzhen, 518055, China.
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Zhang J, Wang M, Hu X, Li N, Loh P, Gong Y, Chen Y, Wang L, Lin X, Xu Z, Liu Y, Guo Y, Chen Z, Chen B. Electroacupuncture-driven endogenous circulating serum exosomes as a potential therapeutic strategy for sepsis. Chin Med 2023; 18:106. [PMID: 37635258 PMCID: PMC10463748 DOI: 10.1186/s13020-023-00816-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 08/08/2023] [Indexed: 08/29/2023] Open
Abstract
BACKGROUND Sepsis poses a serious threat to human life and health, with limited options for current clinical treatments. Acupuncture plays an active role in treating sepsis. However, previous studies have focused on the neuromodulatory effect of acupuncture, neglecting its network modulatory effect. Exosomes, as a new way of intercellular communication, may play an important role in transmitting acupuncture information. This paper explores the possibility of electroacupuncture-driven endogenous circulating serum exosomes and their carried miRNAs as a potential treatment for sepsis. METHODS The sepsis mouse model was established by intraperitoneal injection of lipopolysaccharide (LPS) (12 mg/kg, 24 mg/kg), and EA (continuous wave, 10 Hz, intensity 5) or intraperitoneal injection of Acupuncture Exosomes (Acu-exo) were performed before the model establishment. The therapeutic effect was evaluated by survival rate, ELISA, H&E staining and lung wet/dry weight ration (W/D). In vivo imaging of small animals was used to observe the accumulation of Acu-exo in various organs of sepsis mice. LPS was used to induce macrophages in cell experiments, and the effect of Acu-exo on macrophage inflammatory cytokines was observed. In addition, The miRNA sequencing method was further used to detect the serum exosomes of normal and EA-treated mice, and combined with network biology analysis methods to screen possible key targets. RESULTS EA and Acu-exo reduced the W/D and lung tissue damage in sepsis mice, down-regulated the expression of serum inflammatory cytokines TNF-α and IL-6, and increased the survival rate of sepsis mice. In vivo imaging of small animals found that Acu-exo were accumulated in the lungs of sepsis mice. Cell experiments proved that Acu-exo down-regulated the expression of inflammatory cytokines TNF-α, IL-6 and IL-1β to alleviate the inflammatory response induced by LPS in macrophages. MiRNA sequencing revealed 53 differentially expressed miRNAs, and network biology analysis revealed the key targets of Acu-exo in sepsis treatment. CONCLUSION Electroacupuncture-driven endogenous circulating serum exosomes and their carried miRNAs may be a potential treatment for sepsis.
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Affiliation(s)
- Jingyu Zhang
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, People's Republic of China
| | - Meijuan Wang
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, People's Republic of China
| | - Xiyou Hu
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, People's Republic of China
| | - Ningcen Li
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, People's Republic of China
| | - PeiYong Loh
- School of International Education, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Yinan Gong
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, People's Republic of China
- Tianjin Key Laboratory of Modern Chinese Medicine Theory of Innovation and Application, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, People's Republic of China
- School of Acupuncture & Moxibustion and Tuina, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, People's Republic of China
| | - Yong Chen
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, People's Republic of China
| | - Lifen Wang
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, People's Republic of China
| | - Xiaowei Lin
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, People's Republic of China
- Tianjin Key Laboratory of Modern Chinese Medicine Theory of Innovation and Application, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, People's Republic of China
| | - Zhifang Xu
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, People's Republic of China
- Tianjin Key Laboratory of Modern Chinese Medicine Theory of Innovation and Application, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, People's Republic of China
- School of Acupuncture & Moxibustion and Tuina, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, People's Republic of China
| | - Yangyang Liu
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, People's Republic of China
- Tianjin Key Laboratory of Modern Chinese Medicine Theory of Innovation and Application, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, People's Republic of China
| | - Yi Guo
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, People's Republic of China
- Tianjin Key Laboratory of Modern Chinese Medicine Theory of Innovation and Application, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, People's Republic of China
| | - Zelin Chen
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, People's Republic of China
- Tianjin Key Laboratory of Modern Chinese Medicine Theory of Innovation and Application, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, People's Republic of China
- School of Acupuncture & Moxibustion and Tuina, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, People's Republic of China
- National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, 300381, People's Republic of China
| | - Bo Chen
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, People's Republic of China.
- Tianjin Key Laboratory of Modern Chinese Medicine Theory of Innovation and Application, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, People's Republic of China.
- School of Acupuncture & Moxibustion and Tuina, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, People's Republic of China.
- National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, 300381, People's Republic of China.
- Tianjin Binhai New Area Hospital of Traditional Chinese Medicine, Fourth Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, 300451, People's Republic of China.
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Deng L, Huo PC, Feng MT, Wang RL, Jing R, Luo LJ. miR-27a-5p alleviates periodontal inflammation by targeting phosphatase and tensin homolog deleted on chromosome ten. Mol Oral Microbiol 2023. [PMID: 37216657 DOI: 10.1111/omi.12416] [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: 11/25/2022] [Revised: 02/05/2023] [Accepted: 04/04/2023] [Indexed: 05/24/2023]
Abstract
INTRODUCTION MicroRNAs (miRNAs), a type of non-coding RNA, have been demonstrated to be essential posttranscriptional modulators in oral diseases and inflammatory responses. However, the specific role of miR-27a-5p in periodontitis requires further investigation. In this study, we used both cellular and animal models to determine how miR-27a-5p affects the pathogenesis of periodontitis and its associated biological functions. METHODS Quantitative real-time polymerase chain reaction and western blotting were used to analyze the expression of cytokines, phosphatase and tensin homolog deleted on chromosome ten (PTEN), and miR-27a-5p transcription. Investigation of alveolar bone resorption and inflammation of the periodontium in ligature-induced periodontitis in mice was performed using micro-computed tomography (micro-CT), hematoxylin-eosin (HE) staining, and tartrate-resistant acid phosphatase (TRAP) staining. The binding of miR-27a-5p and PTEN was predicted using the TargetScan database and experimentally confirmed using dual luciferase reporter gene assays. RESULTS The inflamed gingiva showed lower levels of miR-27a-5p. Macrophages from miR-27a-5p-/- mice produced much higher quantities of pro-inflammatory cytokines owing to the stimulation of Porphyromonas gingivalis lipopolysaccharide, and miR-27a-5p-/- mice with ligature-induced periodontitis also exhibited more severe alveolar bone resorption and damage to the periodontium. Target validation assays identified PTEN as a direct target of bona. Blocking PTEN expression partially reduced inflammation, both in vitro and in vivo. CONCLUSIONS miR-27a-5p alleviated the inflammatory response in periodontitis by targeting PTEN.
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Affiliation(s)
- Li Deng
- Department of Periodontics, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Peng-Cheng Huo
- Department of Periodontics, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Mei-Ting Feng
- Department of Periodontics, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Rui-Ling Wang
- Department of Periodontics, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Rui Jing
- Department of Periodontics, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Li-Jun Luo
- Department of Periodontics, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
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Luo J, Li J, Xiong L, Fan L, Peng L, Yang Y, Lu D, Shao J. MicroRNA-27a-3p relieves inflammation and neurologic impairment after cerebral ischemia reperfusion via inhibiting LITAF and the TLR4/NF-κB pathway. Eur J Neurosci 2022; 56:4013-4030. [PMID: 35584745 DOI: 10.1111/ejn.15720] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 04/12/2022] [Accepted: 05/12/2022] [Indexed: 11/30/2022]
Abstract
Cerebral ischemia reperfusion (CIR) affects microRNA (miR) expression and causes substantial inflammation. Here, we investigated the influence and underlying mechanism of miR-27a-3p in rats with CIR. Firstly, Biliverdin treatment relieved cerebral infarction and decreased the levels of serum interleukin (IL)-1β, IL-6 and TNF-α. Through our previous study, we found key miR-27a-3p and its targeted gene LITAF might involve in the molecular mechanism of CIR. Then, the regulation between miR-27a-3p and LITAF was verified by the temporal miR-27a-3p and LITAF expression profiles and luciferase assay. Moreover, intracerebroventricular injection of the miR-27a-3p mimic significantly decreased the LITAF, TLR4, NF-κB and IL-6 levels at 24h post-surgery, whereas miR-27a-3p inhibitor reversed these effects. Furthermore, miR-27a-3p mimic could relieve cerebral infarct and neurologic deficit after CIR. In addition, injection of miR-27a-3p mimic decreased neuronal damage induced by CIR. Taken together, our results suggest that miR-27a-3p protect against CIR by relieving inflammation, neuronal damage and neurologic deficit via regulating LITAF and the TLR4/NF-κB pathway.
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Affiliation(s)
- Jing Luo
- Department of Anesthesiology, First Affiliated Hospital of Kunming Medical University
| | - Junjie Li
- Department of Anesthesiology, First Affiliated Hospital of Kunming Medical University
| | - Li Xiong
- Department of Anesthesiology, First Affiliated Hospital of Kunming Medical University
| | - Linna Fan
- Department of Anesthesiology, First Affiliated Hospital of Kunming Medical University
| | - Lijia Peng
- Department of Anesthesiology, First Affiliated Hospital of Kunming Medical University
| | - Yuan Yang
- Department of Anesthesiology, First Affiliated Hospital of Kunming Medical University
| | - Di Lu
- Incubation center for Scientific and technological achievements, Kunming Medical University
| | - Jianlin Shao
- Department of Anesthesiology, First Affiliated Hospital of Kunming Medical University
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Ru L, Wang XM, Niu JQ. The miR-23-27-24 cluster: an emerging target in NAFLD pathogenesis. Acta Pharmacol Sin 2022; 43:1167-1179. [PMID: 34893685 PMCID: PMC9061717 DOI: 10.1038/s41401-021-00819-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Accepted: 11/08/2021] [Indexed: 12/13/2022] Open
Abstract
The incidence of non-alcoholic fatty liver disease (NAFLD) is increasing globally, being the most widespread form of chronic liver disease in the west. NAFLD includes a variety of disease states, the mildest being non-alcoholic fatty liver that gradually progresses to non-alcoholic steatohepatitis, fibrosis, cirrhosis, and eventually hepatocellular carcinoma. Small non-coding single-stranded microRNAs (miRNAs) regulate gene expression at the miRNA or translational level. Numerous miRNAs have been shown to promote NAFLD pathogenesis and progression through increasing lipid accumulation, oxidative stress, mitochondrial damage, and inflammation. The miR-23-27-24 clusters, composed of miR-23a-27a-24-2 and miR-23b-27b-24-1, have been implicated in various biological processes as well as many diseases. Herein, we review the current knowledge on miR-27, miR-24, and miR-23 in NAFLD pathogenesis and discuss their potential significance in NAFLD diagnosis and therapy.
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Affiliation(s)
- Lin Ru
- grid.430605.40000 0004 1758 4110Department of Hepatology, The First Hospital of Jilin University, Changchun, 130021 China
| | - Xiao-mei Wang
- grid.430605.40000 0004 1758 4110Department of Hepatology, The First Hospital of Jilin University, Changchun, 130021 China ,grid.430605.40000 0004 1758 4110Key Laboratory of Zoonosis Research, Ministry of Education, The First Hospital of Jilin University, Changchun, 130021 China
| | - Jun-qi Niu
- grid.430605.40000 0004 1758 4110Department of Hepatology, The First Hospital of Jilin University, Changchun, 130021 China ,grid.430605.40000 0004 1758 4110Key Laboratory of Zoonosis Research, Ministry of Education, The First Hospital of Jilin University, Changchun, 130021 China
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Liu C, Zhao Z, Guo S, Zhang L, Fan X, Zheng J. Exosomal miR-27a-3p derived from tumor-associated macrophage suppresses propranolol sensitivity in infantile hemangioma. Cell Immunol 2021; 370:104442. [PMID: 34634611 DOI: 10.1016/j.cellimm.2021.104442] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 09/18/2021] [Accepted: 09/20/2021] [Indexed: 12/14/2022]
Abstract
Propranolol is the first-line drug for infantile hemangioma (IH) therapy, whereas propranolol resistance is clinically observed. Tumor-associated macrophages (TAMs)-derived exosomes may deliver biological molecules to promote tumor progression. Here, we aimed to investigate the relationship between TAMs-derived exosomal miR-27a-3p and propranolol sensitivity in IH. Human peripheral blood monocytes (PBMCs) were cultured with macrophage colony-stimulating factor (M-CSF) for 7 days to get unactivated macrophages (Un-Mac), which were further treated with IL-4 and IL-13 to induce M2 polarized macrophages. Exosomes were isolated from the conditioned medium of M2 macrophage, followed by identification. Cell co-culture and/or transfection were performed to explore whether M2 polarized macrophage-derived exosomes (M2-exos) could mediate the crosstalk between TAMs-derived miR-27a-3p and hemangioma stem cells (HemSCs). In addition, nude mice were subcutaneously transplanted with HemSCs pretreated with or without M2-Exos to examine the effects of M2-Exos on IH in vivo. M2 polarized macrophages inhibited propranolol sensitivity of HemSCs, as shown by the increased cell viability and decreased apoptosis. miR-27a-3p was upregulated in M2 polarized macrophages and M2-Exos. Moreover, M2-exos delivered miR-27a-3p from macrophages to HemSCs and subsequently reduced propranolol sensitivity. Luciferase reporter and biotin-RNA pulldown assay proved that dickkopf-related protein 2 (DKK2) was the direct target of miR-27a-3p. These results demonstrate that M2-exos could deliver miR-27a-3p from macrophages to HemSCs to reduce the sensitivity of HemSCs to propranolol by down-regulating DKK2 expression, and exosomal miR-27a-3p and DKK2 in HemSCs could be considered as treatment targets.
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Affiliation(s)
- Chao Liu
- Department of Oromaxillofacial Head and Neck Oncology, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China; Department of Burn and Plastic Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, Shandong, China
| | - Zeliang Zhao
- Department of Oromaxillofacial Head and Neck Oncology, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - Shikai Guo
- Department of Burn and Plastic Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, Shandong, China
| | - Ling Zhang
- Department of Oromaxillofacial Head and Neck Oncology, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - Xindong Fan
- Department of Interventional Therapy, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - Jiawei Zheng
- Department of Oromaxillofacial Head and Neck Oncology, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China.
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Yan B, Guo Y, Gui Y, Jiang ZS, Zheng XL. Multifunctional RNase MCPIP1 and its Role in Cardiovascular Diseases. Curr Med Chem 2021; 28:3385-3405. [PMID: 33191882 DOI: 10.2174/0929867327999201113100918] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 09/20/2020] [Accepted: 10/09/2020] [Indexed: 11/22/2022]
Abstract
Monocyte chemoattractant protein-1 induced protein 1 (MCPIP1), one of the MCPIP family members, is characterized by the presence of both C-x8-C-x5-C-x3-H (CCCH)- type zinc finger and PilT-N-terminal domains. As a potent regulator of innate immunity, MCPIP1 exerts anti-inflammatory effects through its ribonuclease (RNase) and deubiquitinating enzyme activities to degrade cytokine mRNAs and inhibit nuclear factor- kappa B (NF-κB), respectively. MCPIP1 is expressed not only in immune cells but also in many other cell types, including cardiomyocytes, vascular endothelial cells (ECs) and smooth muscle cells (SMCs). Increasing evidence indicates that MCPIP1 plays a role in the regulation of cardiac functions and is involved in the processes of vascular diseases, such as ischemia-reperfusion (I/R) and atherosclerosis. To better understand the emerging roles of MCPIP1 in the cardiovascular system, we reviewed the current literature with respect to MCPIP1 functions and discussed its association with the pathogenesis of cardiovascular diseases and the implication as a therapeutic target.
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Affiliation(s)
- Binjie Yan
- Institute of Cardiovascular Disease, Key Laboratory for Arteriosclerosis of Hunan Province, Hengyang Medical College, University of South China, Hengyang City, Hunan Province 421001, China
| | - Yanan Guo
- Departments of Biochemistry & Molecular Biology and Physiology & Pharmacology, Libin Cardiovascular Institute, Cumming School of Medicine, The University of Calgary, 3330 Hospital Drive N.W., Calgary, ABT2N 4N1, Canada
| | - Yu Gui
- Departments of Biochemistry & Molecular Biology and Physiology & Pharmacology, Libin Cardiovascular Institute, Cumming School of Medicine, The University of Calgary, 3330 Hospital Drive N.W., Calgary, ABT2N 4N1, Canada
| | - Zhi-Sheng Jiang
- Institute of Cardiovascular Disease, Key Laboratory for Arteriosclerosis of Hunan Province, Hengyang Medical College, University of South China, Hengyang City, Hunan Province 421001, China
| | - Xi-Long Zheng
- Departments of Biochemistry & Molecular Biology and Physiology & Pharmacology, Libin Cardiovascular Institute, Cumming School of Medicine, The University of Calgary, 3330 Hospital Drive N.W., Calgary, ABT2N 4N1, Canada
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Goto S, Ichihara G, Katsumata Y, Ko S, Anzai A, Shirakawa K, Endo J, Kataoka M, Moriyama H, Hiraide T, Kitakata H, Kobayashi T, Fukuda K, Sano M. Time-Series Transcriptome Analysis Reveals the miR-27a-5p-Ppm1l Axis as a New Pathway Regulating Macrophage Alternative Polarization After Myocardial Infarction. Circ J 2021; 85:929-938. [PMID: 33658455 DOI: 10.1253/circj.cj-20-0783] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND Timely differentiation of monocytes into M2-like macrophages is important in the cardiac healing process after myocardial infarction (MI), but molecular mechanisms governing M2-like macrophage differentiation at the transcriptional level after MI have not been fully understood.Methods and Results:A time-series microarray analysis of mRNAs and microRNAs in macrophages isolated from the infarcted myocardium was performed to identify the microRNAs involved in regulating the process of differentiation to M2-like macrophages. Correlation analysis revealed 7 microRNAs showing negative correlations with the progression of polarity changes towards M2-like subsets. Next, correlation coefficients for the changes in expression of mRNAs and miRNAs over time were calculated for all combinations. As a result, miR-27a-5p was extracted as a possible regulator of the largest number of genes in the pathway for the M2-like polarization. By selecting mouse mRNAs and human mRNAs possessing target sequences of miR-27a-5p and showing expression patterns inversely correlated with that of miR-27a-5p, 8 potential targets of miR-27a-5p were identified, includingPpm1l. Using the mouse bone marrow-derived macrophages undergoing differentiation into M2-like subsets by interleukin 4 stimulation, we confirmed that miR-27a-5p suppressed M2-related genes by negatively regulatingPpm1lexpression. CONCLUSIONS Ppm1land miR-27a-5p may be the key molecules regulating M2-like polarization, with miR-27a-5p inhibiting the M2-like polarization through downregulation ofPpm1lexpression.
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Affiliation(s)
- Shinichi Goto
- Department of Cardiology, Keio University School of Medicine
| | - Genki Ichihara
- Department of Cardiology, Keio University School of Medicine
| | - Yoshinori Katsumata
- Department of Cardiology, Keio University School of Medicine.,Institute for Integrated Sports Medicine, Keio University School of Medicine
| | - Seien Ko
- Department of Cardiology, Keio University School of Medicine
| | - Atsushi Anzai
- Department of Cardiology, Keio University School of Medicine
| | | | - Jin Endo
- Department of Cardiology, Keio University School of Medicine
| | | | | | | | - Hiroki Kitakata
- Department of Cardiology, Keio University School of Medicine
| | | | - Keiichi Fukuda
- Department of Cardiology, Keio University School of Medicine
| | - Motoaki Sano
- Department of Cardiology, Keio University School of Medicine
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Li H, Lin L, Chong L, Gu S, Wen S, Yu G, Hu X, Dong L, Zhang H, Li C. Time-resolved mRNA and miRNA expression profiling reveals crucial coregulation of molecular pathways involved in epithelial-pneumococcal interactions. Immunol Cell Biol 2020; 98:726-742. [PMID: 32592597 PMCID: PMC7586809 DOI: 10.1111/imcb.12371] [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: 11/12/2019] [Revised: 05/29/2020] [Accepted: 06/23/2020] [Indexed: 12/31/2022]
Abstract
Streptococcus pneumoniae is a major causative agent of pneumonia worldwide and its complex interaction with the lung epithelium has not been thoroughly characterized. In this study, we exploited both RNA‐sequencing and microRNA (miRNA)‐sequencing approaches to monitor the transcriptional changes in human lung alveolar epithelial cells infected by S. pneumoniae in a time‐resolved manner. A total of 1330 differentially expressed (DE) genes and 45 DE miRNAs were identified in all comparisons during the infection process. Clustering analysis showed that all DE genes were grouped into six clusters, several of which were primarily involved in inflammatory or immune responses. In addition, target gene enrichment analyses identified 11 transcription factors that were predicted to link at least one of four clusters, revealing transcriptional coregulation of multiple processes or pathways by common transcription factors. Notably, pharmacological treatment suggested that phosphorylation of p65 is important for optimal transcriptional regulation of target genes in epithelial cells exposed to pathogens. Furthermore, network‐based clustering analysis separated the DE genes negatively regulated by DE miRNAs into two functional modules (M1 and M2), with an enrichment in immune responses and apoptotic signaling pathways for M1. Integrated network analyses of potential regulatory interactions in M1 revealed that multiple DE genes related to immunity and apoptosis were regulated by multiple miRNAs, indicating the coordinated regulation of multiple genes by multiple miRNAs. In conclusion, time‐series expression profiling of messenger RNA and miRNA provides a wealth of information for global transcriptional changes, and offers comprehensive insight into the molecular mechanisms underlying host–pathogen interactions.
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Affiliation(s)
- Haiyan Li
- Department of Pediatric Pulmonology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Li Lin
- Department of Pediatric Pulmonology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Lei Chong
- Department of Pediatric Pulmonology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Shuge Gu
- Department of Pediatric Pulmonology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Shunhang Wen
- Department of Pediatric Pulmonology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Gang Yu
- Department of Pediatric Pulmonology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Xiaoguang Hu
- Department of Pediatric Pulmonology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Lin Dong
- Department of Pediatric Pulmonology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Hailin Zhang
- Department of Pediatric Pulmonology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Changchong Li
- Department of Pediatric Pulmonology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
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10
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Liu Q, Yang J, Gong Y, Cai J, Zheng Y, Zhang Y, Yu D, Zhang Z. MicroRNA profiling identifies biomarkers in head kidneys of common carp exposed to cadmium. CHEMOSPHERE 2020; 247:125901. [PMID: 31951951 DOI: 10.1016/j.chemosphere.2020.125901] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Revised: 01/10/2020] [Accepted: 01/10/2020] [Indexed: 06/10/2023]
Abstract
Cadmium (Cd) is an increasingly important environmental pollutant due to its high toxicity to fish and aquatic animals. In the present study, we cultured common carp (Cyprinus carpio L.) in two groups, a control group and a Cd group, with the Cd group being exposed to Cd for 30 d. The antioxidant enzyme activities of T-AOC and CAT and the GSH content were differentially decreased during Cd exposure. miRNAome profiling indicated that 23 differentially expressed miRNAs were potential biomarkers for Cd exposure; 7 miRNAs were up-regulated, and 16 miRNAs were down-regulated. The expression levels of miR-122, novel-miR6, miR-193a-3p and miR-27a-5p in the Cd group were 0.43-fold, 0.47-fold, 0.49-fold and 2.4-fold greater than in the control group, respectively. qRT-PCR further detected that the expression levels of apoptosis-related genes, including BAX, BAD, BAK, CASPASE9 and PIDD, were differentially increased, while BCL2 was decreased. Western blot analysis showed that the protein expression levels of BAX and BAD were increased and that of BCL2 was differentially decreased during Cd exposure. Alterations in the levels of miR-122, novel-miR6, miR-193a-3p and miR-27a-5p expression may play an important role in diagnosing oxidative stress-induced apoptosis during Cd exposure in the head kidney. These markers may contribute to diagnosing the early stage of Cd exposure in common carp.
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Affiliation(s)
- Qi Liu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China
| | - Jie Yang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China
| | - Yafan Gong
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China
| | - Jingzeng Cai
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China
| | - Yingying Zheng
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China
| | - Yuan Zhang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China
| | - Dahai Yu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China
| | - Ziwei Zhang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China; Key Laboratory of the Provincial Education Department of Heilongjiang for Common Animal Disease Prevention and Treatment, College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China.
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11
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Effect of Beta-Blockade on the Expression of Regulatory MicroRNA after Severe Trauma and Chronic Stress. J Am Coll Surg 2019; 230:121-129. [PMID: 31672639 DOI: 10.1016/j.jamcollsurg.2019.09.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 08/14/2019] [Accepted: 09/16/2019] [Indexed: 12/20/2022]
Abstract
BACKGROUND Beta-blockade administration after lung contusion, hemorrhagic shock, and chronic stress has been shown to improve bone marrow function, decrease hypercatecholaminemia, and reduce inflammation. MicroRNAs (miR) are critical biologic regulators that can downregulate gene expression by causing messenger RNA degradation or inhibition of translation. This study sought to expand our understanding of the molecular mechanisms underlying the reduced inflammatory response after the administration of beta-blockade (BB) in our rodent trauma model. STUDY DESIGN Male Sprague-Dawley rats aged 8 to 9 weeks were randomized to lung contusion, hemorrhagic shock with daily restraint stress (LCHS/CS) or LCHS/CS plus propranolol (LCHS/CS+BB). Restraint stress occurred 2 hours daily after LCHS. Propranolol (10 mg/kg) was given daily until day 7. Total RNA and miR were isolated from bone marrow and genome-wide miR expression patterns were assayed. Bone marrow cytokine expression was determined with quantitative polymerase chain reaction. RESULTS LCHS/CS led to significantly increased bone marrow expression of interleukin (IL) 1β, tumor necrosis factor-α, IL-6, nitric oxide, and plasma C-reactive protein. There were marked differences in expression of 45 miRs in the LCHS/CS+BB group compared with the LCHS/CS group when using a p value <0.001. Rno-miR-27a and miR-25 were upregulated 7- to 8-fold in the rodents who underwent LCHS/CS+BB compared with LCHS/CS alone, and this correlated with reduced bone marrow expression of IL-1β, tumor necrosis factor-α, IL-6, nitric oxide, and reduced plasma C-reactive protein in the LCHS/CS+BB group. CONCLUSIONS The genomic and miR expression patterns in bone marrow after LCHS/CS differed significantly compared with rodents that received propranolol after LCHS/CS. The use of BB after severe trauma can help mitigate persistent inflammation by upregulating Rno-miR-27a and miR-25 and reducing inflammatory cytokines in those who remain critically ill.
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12
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Li Z, Han S, Jia Y, Yang Y, Han F, Wu G, Li X, Zhang W, Jia W, He X, Han J, Hu D. MCPIP1 regulates RORα expression to protect against liver injury induced by lipopolysaccharide via modulation of miR-155. J Cell Physiol 2019; 234:16562-16572. [PMID: 30811042 DOI: 10.1002/jcp.28327] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 01/20/2019] [Accepted: 01/24/2019] [Indexed: 02/06/2023]
Abstract
Liver injury plays vital roles in the development of inflammation and organ dysfunction during sepsis. MCP-1-induced protein 1 (MCPIP1), as an endoribonuclease, is a critical regulator for the maintenance of immune homeostasis. However, whether MCPIP1 participates in the septic liver injury remains unknown. The aim of this study was to investigate the role of MCPIP1 in lipopolysaccharides-induced liver injury and the underlying modulatory mechanisms. Quantitative real-time polymerase chain reaction and immunoblotting were used to determine proinflammatory cytokines, MCPIP1, retinoid-related orphan receptor α (RORα), miR-155, and related protein from nuclear factor-κB (NF-κB) pathway expression. Dual luciferase reporter assay was used to analyze whether miR-155 regulates RORα transcription. Secretion of inflammatory cytokines into sera in mice were measured by enzyme-linked immunosorbent assay. Hematoxylin and eosin staining, alanine aminotransferase, and aspartate transaminase, assay were used to evaluate liver function. We found that MCPIP1 expression was notably upregulated and significantly downregulated inflammatory cytokine secretion and NF-κB signaling activation in macrophages following exposure to lipopolysaccharide. Moreover, miR-155, lowered by MCPIP1, directly targeted on 3'-untranslated region of RORα to activate an inflammatory response. Importantly, MCPIP1 overexpression in mice alleviated septic liver injury symptoms following lipopolysaccharides stimulation. Collectively, these data highlight MCPIP1/miR-155/RORα axis as a novel modulation of inflammation in liver injury and potential therapeutic target for future research.
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Affiliation(s)
- Zhenzhen Li
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, Xi'an, Shaanxi, China.,Department of Neurobiology and Institute of Neurosciences, School of Basic Medicine, Air Force Medical University, Xi'an, Shaanxi, China
| | - Shichao Han
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, Xi'an, Shaanxi, China
| | - Yanhui Jia
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, Xi'an, Shaanxi, China
| | - Yunshu Yang
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, Xi'an, Shaanxi, China
| | - Fu Han
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, Xi'an, Shaanxi, China
| | - Gaofeng Wu
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, Xi'an, Shaanxi, China
| | - Xiaoqiang Li
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, Xi'an, Shaanxi, China
| | - Wei Zhang
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, Xi'an, Shaanxi, China
| | - Wenbin Jia
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, Xi'an, Shaanxi, China
| | - Xiang He
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, Xi'an, Shaanxi, China
| | - Juntao Han
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, Xi'an, Shaanxi, China
| | - Dahai Hu
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, Xi'an, Shaanxi, China
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13
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Zhang S, He K, Zhou W, Cao J, Jin Z. miR‑494‑3p regulates lipopolysaccharide‑induced inflammatory responses in RAW264.7 cells by targeting PTEN. Mol Med Rep 2019; 19:4288-4296. [PMID: 30942409 PMCID: PMC6471187 DOI: 10.3892/mmr.2019.10083] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Accepted: 01/28/2019] [Indexed: 12/28/2022] Open
Abstract
MicroRNAs (miRNAs/miRs) serve important roles in regulating inflammatory responses at the post-transcriptional level. In the present study, the limma package was used to analyze the GSE43300 array dataset downloaded from the Gene Expression Omnibus database. It was identified that several miRNAs, including miR-494-3p, were upregulated in lipopolysaccharide (LPS)-treated RAW264.7 macrophages compared to control cells. Transfection experiments indicated that overexpressing miR-494-3p inhibited production of LPS-induced proinflammatory cytokines, including interleukin-1β and tumor necrosis factor-α. Conversely, knockdown of miR-494-3p enhanced cytokine expression. Bioinformatics prediction and luciferase assay both revealed that miR-494-3p could directly target phosphatase and tensin homolog (PTEN) and upregulate protein kinase B activity. In addition, miR-494-3p mimics suppressed p65 translocation to the nucleus. Similar effects were observed following PTEN silencing. In conclusion, the results of the present study revealed that miR-494-3p may act as an important immune regulator in LPS-stimulated macrophages, and be an effective therapeutic target for treating infections in the future.
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Affiliation(s)
- Si Zhang
- State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases and Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Kang He
- Department of Periodontology, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Weiwei Zhou
- State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases and Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Jun Cao
- State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases and Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Zuolin Jin
- State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases and Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
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14
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Nie L, Cai SY, Sun J, Chen J. MicroRNA-155 promotes pro-inflammatory functions and augments apoptosis of monocytes/macrophages during Vibrio anguillarum infection in ayu, Plecoglossus altivelis. FISH & SHELLFISH IMMUNOLOGY 2019; 86:70-81. [PMID: 30447432 DOI: 10.1016/j.fsi.2018.11.030] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 11/07/2018] [Accepted: 11/13/2018] [Indexed: 06/09/2023]
Abstract
Upon recognition of pathogen-associated molecular patterns by pattern-recognition receptors, immune cells are recruited, and multiple antibacterial/viral signaling pathways are activated, leading to the production of immune-related cytokines, chemokines, and interferons along with further activation of the adaptive immune response. MicroRNAs (miRs) play essential roles in regulating such immune signaling pathways, as well as the biological activities of immune cells; however, knowledge regarding the roles of miRs in the immune-related function of monocytes/macrophages (MO/MΦ) remains limited in teleosts. In the present study, we addressed the effects of miR-155 on Vibrio anguillarum-infected MO/MΦ. Our results showed that miR-155 augmented MO/MΦ expression of proinflammatory cytokines and attenuated the expression of anti-inflammatory cytokines. Additionally, the phagocytosis and bacteria-killing abilities of these cells were boosted by miR-155 administration, which also promoted M1-type polarization but inhibited M2-type polarization. Furthermore, the V. anguillarum-infection-induced apoptosis was also enhanced by miR-155 mimic transfection, which might have been due to excessive inflammation or the accumulation of reactive oxygen species. These results represent the first report providing a detailed account of the regulatory roles of miR-155 on MO/MΦ functions in teleosts and offer insight into the evolutionary history of miR-155-mediated regulation of host immune responses.
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Affiliation(s)
- Li Nie
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Meishan Campus, Ningbo University, Ningbo, 315800, China
| | - Shi-Yu Cai
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Meishan Campus, Ningbo University, Ningbo, 315800, China
| | - Jiao Sun
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Meishan Campus, Ningbo University, Ningbo, 315800, China
| | - Jiong Chen
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Meishan Campus, Ningbo University, Ningbo, 315800, China; Key Laboratory of Applied Marine Biotechnology of Ministry of Education, Meishan Campus, Ningbo University, Ningbo, 315800, China.
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15
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Qi S, Wang L, Chang X, Zhang Y, Zhang Y, Gao MQ. MCPIP1 mediates inflammatory responses induced by lipopolysaccharide and lipoteichoic acid in bovine mammary epithelial cells. Acta Biochim Biophys Sin (Shanghai) 2019; 51:150-158. [PMID: 30590418 DOI: 10.1093/abbs/gmy163] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Revised: 11/26/2018] [Accepted: 11/28/2018] [Indexed: 02/07/2023] Open
Abstract
Monocyte chemoattractant protein-induced protein 1 (MCPIP1) is a kind of zinc finger RNA binding protein, which exerts immune responses in a variety of cell types. However, the role of MCPIP1 in bovine mammary epithelial cells during mastitis has not been studied. In this study, we explored the functions of MCPIP1 in the inflammatory process induced by virulence factors of pathogens in bovine mammary alveolar cell-T (MAC-T) cell line. Our results showed that MCPIP1 was significantly highly expressed both in the mammary tissue of dairy cows with mastitis and in inflammatory MAC-T cells induced by lipopolysaccharide (LPS) or lipoteichoic acid (LTA). Furthermore, we found that overexpression of MCPIP1 in MAC-T cells abated the LPS-induced increase at the gene expression levels of inflammatory mediators tumor necrosis factor-α-α, interleukin (IL)-1β, IL-6 and IL-8, enhanced the LPS- and LTA-induced inhibition of epithelial proliferation and promoted the LPS- and LTA-induced oxidative and DNA damage. These findings indicated that MCPIP1 has an enormous potential in regulating the inflammatory response of bovine mammary epithelial cells during infection and may provide an effective therapeutic target for bovine mastitis to reduce the damage caused by inflammatory reactions.
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Affiliation(s)
- Shaopei Qi
- College of Veterinary Medicine, Northwest A&F University, Yangling, China
| | - Lixue Wang
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Xiao Chang
- Innovation Experimental College, Northwest A&F University, Yangling, China
| | - Yanfen Zhang
- Northwest A&F University Hospital, Northwest A&F University, Yangling, China
| | - Yong Zhang
- College of Veterinary Medicine, Northwest A&F University, Yangling, China
| | - Ming-Qing Gao
- College of Veterinary Medicine, Northwest A&F University, Yangling, China
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16
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Tyka K, Jörns A, Turatsinze JV, Eizirik DL, Lenzen S, Gurgul-Convey E. MCPIP1 regulates the sensitivity of pancreatic beta-cells to cytokine toxicity. Cell Death Dis 2019; 10:29. [PMID: 30631045 PMCID: PMC6328635 DOI: 10.1038/s41419-018-1268-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Revised: 10/29/2018] [Accepted: 12/05/2018] [Indexed: 12/20/2022]
Abstract
The autoimmune-mediated beta-cell death in type 1 diabetes (T1DM) is associated with local inflammation (insulitis). We examined the role of MCPIP1 (monocyte chemotactic protein–induced protein 1), a novel cytokine-induced antiinflammatory protein, in this process. Basal MCPIP1 expression was lower in rat vs. human islets and beta-cells. Proinflammatory cytokines stimulated MCPIP1 expression in rat and human islets and in insulin-secreting cells. Moderate overexpression of MCPIP1 protected insulin-secreting INS1E cells against cytokine toxicity by a mechanism dependent on the presence of the PIN/DUB domain in MCPIP1. It also reduced cytokine-induced Chop and C/ebpβ expression and maintained MCL-1 expression. The shRNA-mediated suppression of MCPIP1 led to the potentiation of cytokine-mediated NFκB activation and cytokine toxicity in human EndoC-βH1 beta-cells. MCPIP1 expression was very high in infiltrated beta-cells before and after diabetes manifestation in the LEW.1AR1-iddm rat model of human T1DM. The extremely high expression of MCPIP1 in clonal beta-cells was associated with a failure of the regulatory feedback-loop mechanism, ER stress induction and high cytokine toxicity. In conclusion, our data indicate that the expression level of MCPIP1 affects the susceptibility of insulin-secreting cells to cytokines and regulates the mechanism of beta-cell death in T1DM.
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Affiliation(s)
- Karolina Tyka
- Institute of Clinical Biochemistry, Hannover Medical School, 30625, Hannover, Germany
| | - Anne Jörns
- Institute of Clinical Biochemistry, Hannover Medical School, 30625, Hannover, Germany
| | - Jean-Valery Turatsinze
- ULB Center for Diabetes Research, Medical Faculty, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Decio L Eizirik
- ULB Center for Diabetes Research, Medical Faculty, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Sigurd Lenzen
- Institute of Clinical Biochemistry, Hannover Medical School, 30625, Hannover, Germany.,Institute of Experimental Diabetes Research, Hannover Medical School, Hannover, Germany
| | - Ewa Gurgul-Convey
- Institute of Clinical Biochemistry, Hannover Medical School, 30625, Hannover, Germany.
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17
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Ju M, Liu B, He H, Gu Z, Liu Y, Su Y, Zhu D, Cang J, Luo Z. MicroRNA-27a alleviates LPS-induced acute lung injury in mice via inhibiting inflammation and apoptosis through modulating TLR4/MyD88/NF-κB pathway. Cell Cycle 2018; 17:2001-2018. [PMID: 30231673 DOI: 10.1080/15384101.2018.1509635] [Citation(s) in RCA: 171] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Acute lung injury (ALI) is a critical clinical condition with a high mortality rate, characterized with excessive uncontrolled inflammation and apoptosis. Recently, microRNAs (miRNAs) have been found to play crucial roles in the amelioration of various inflammation-induced diseases, including ALI. However, it remains unknown the biological function and regulatory mechanisms of miRNAs in the regulation of inflammation and apoptosis in ALI. The aim of this study is to identify and evaluate the potential role of miRNAs in ALI and reveal the underlying molecular mechanisms of their effects. Here, we analyzed microRNA expression profiles in lung tissues from LPS-challenged mice using miRNA microarray. Because microRNA-27a (miR-27a) was one of the miRNAs being most significantly downregulated, which has an important role in regulation of inflammation, we investigated its function. Overexpression of miR-27a by agomir-27a improved lung injury, as evidenced by the reduced histopathological changes, lung wet/dry (W/D) ratio, lung microvascular permeability and apoptosis in the lung tissues, as well as ameliorative survival of ALI mice. This was accompanied by the alleviating of inflammation, such as the reduced total BALF cell and neutrophil counts, decreased levels of tumor necrosis factor alpha (TNF-α), interleukin-1 (IL-6) interleukin-1β (IL-1β) and myeloperoxidase (MPO) activity in BAL fluid. Toll-like receptor 4 (TLR4), an important regulator of the nuclear factor kappa-B (NF-κB) signaling pathway, was identified as a novel target of miR-27a in RAW264.7 cells. Furthermore, our results showed that LPS stimulation increased the expression of MyD88 and NF-κB p65 (p-p65), but inhibited the expression of inhibitor of nuclear factor-κB-α (IκB-α), suggesting the activation of NF-κB signaling pathway. Further investigations revealed that agomir-miR-27a reversed the promoting effect of LPS on NF-κB signaling pathway. The results here suggested that miR-27a alleviates LPS-induced ALI in mice via reducing inflammation and apoptosis through blocking TLR4/MyD88/NF-κB activation.
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Affiliation(s)
- MinJie Ju
- a Department of Critial Care Medicine , Zhongshan Hospital, Fudan University , Shanghai China
| | - BoFei Liu
- b Department of Intensive Care Medicine , 1st People Hospital , ZhangjiaGang , China
| | - HongYu He
- a Department of Critial Care Medicine , Zhongshan Hospital, Fudan University , Shanghai China
| | - ZhunYong Gu
- a Department of Critial Care Medicine , Zhongshan Hospital, Fudan University , Shanghai China
| | - YiMei Liu
- a Department of Critial Care Medicine , Zhongshan Hospital, Fudan University , Shanghai China
| | - Ying Su
- a Department of Critial Care Medicine , Zhongshan Hospital, Fudan University , Shanghai China
| | - DuMing Zhu
- a Department of Critial Care Medicine , Zhongshan Hospital, Fudan University , Shanghai China
| | - Jing Cang
- c Department of Anesthesiology , Zhongshan Hospital, Fudan University , Shanghai , China
| | - Zhe Luo
- a Department of Critial Care Medicine , Zhongshan Hospital, Fudan University , Shanghai China
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18
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Li W, Qiu X, Liu J, Han Y, Wei D, Ji G, Jiang H. miR-27a protects against acute lung injury in LPS-treated mice by inhibiting NF-κB-mediated inflammatory response. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2018; 11:2980-2989. [PMID: 31938423 PMCID: PMC6958073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 11/18/2017] [Accepted: 01/11/2018] [Indexed: 06/10/2023]
Abstract
Acute lung injury (ALI), which is an excessive uncontrolled inflammatory response in the lung, is mediated by several pro-inflammatory mediators. Recent evidence has implicated microRNAs (miRNAs) in regulation of inflammation in different diseases. However, the roles and underlying molecular mechanism of miRNAs in ALI have not been adequately elucidated. Thus, the aim of the present study was to investigate the possible regulatory mechanism of miRNAs in ALI. In this study, microRNA microarray analysis showed that 48 miRNAs were differentially expressed in lung tissues of an ALI model induced by LPS. Downregulation of miR-27a, played a key role in the regulation of the inflammatory response and protection from traumatic injury. Functional analyses indicated that overexpression of miR-27a using miR-27a agomir (agomiR-27a) protected the animals from LPS-induced ALI through decreased pulmonary inflammation, decreased wet-to-dry weight ratio, and ameliorated lung histopathological changes. In addition, agomiR-27a also decreased production of inflammatory cytokines, such as tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6) and interleukin-1β (IL-1β) in bronchoalveolar lavage fluid (BALF). Moreover, transforming growth factor β-activated kinase 1 binding protein 3 (TAB3), as an activator of NF-κB, was confirmed as a direct target of miR-27a. Further study showed that the anti-inflammatory mechanism of miR-27a is exerted via suppression NF-κB signaling by inhibiting expression of TAB3 in LPS-induced ALI mice. Taken together, these data define the protective mechanism of miR-27a via inhibition of the inflammatory response through blocking NF-κB pathway. Therefore, miR-27a/TAB3/NF-κB axis may be therapeutically targeted to repress inflammation following ALI in the future.
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Affiliation(s)
- Wuquan Li
- Burn Center of Yunnan Province, Second Affiliated Hospital of Kunming Medical UniversityKunming 650101, China
| | - Xiaochen Qiu
- Department of General Surgery, 309 Hospital of PLABeijing, China
| | - Jun Liu
- Burn Center of Yunnan Province, Second Affiliated Hospital of Kunming Medical UniversityKunming 650101, China
| | - Yalong Han
- Burn Center of Yunnan Province, Second Affiliated Hospital of Kunming Medical UniversityKunming 650101, China
| | - Dinan Wei
- Burn Center of Yunnan Province, Second Affiliated Hospital of Kunming Medical UniversityKunming 650101, China
| | - Gang Ji
- Burn Center of Yunnan Province, Second Affiliated Hospital of Kunming Medical UniversityKunming 650101, China
| | - He Jiang
- Burn Center of Yunnan Province, Second Affiliated Hospital of Kunming Medical UniversityKunming 650101, China
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19
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Nejad C, Stunden HJ, Gantier MP. A guide to miRNAs in inflammation and innate immune responses. FEBS J 2018; 285:3695-3716. [DOI: 10.1111/febs.14482] [Citation(s) in RCA: 94] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 03/08/2018] [Accepted: 04/18/2018] [Indexed: 12/14/2022]
Affiliation(s)
- Charlotte Nejad
- Centre for Innate Immunity and Infectious Diseases Hudson Institute of Medical Research Clayton Australia
- Department of Molecular and Translational Science Monash University Clayton Australia
| | - H. James Stunden
- Institute of Innate Immunity Biomedical Center University Hospitals Bonn Bonn Germany
| | - Michael P. Gantier
- Centre for Innate Immunity and Infectious Diseases Hudson Institute of Medical Research Clayton Australia
- Department of Molecular and Translational Science Monash University Clayton Australia
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20
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Chen H, Zhang Z, Zhang L, Wang J, Zhang M, Zhu B. miR-27a protects human mitral valve interstitial cell from TNF-α-induced inflammatory injury via up-regulation of NELL-1. ACTA ACUST UNITED AC 2018; 51:e6997. [PMID: 29694513 PMCID: PMC5937725 DOI: 10.1590/1414-431x20186997] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Accepted: 01/18/2018] [Indexed: 02/06/2023]
Abstract
MicroRNAs (miRNAs) have been reported to be associated with heart valve disease, which can be caused by inflammation. This study aimed to investigate the functional impacts of miR-27a on TNF-α-induced inflammatory injury in human mitral valve interstitial cells (hMVICs). hMVICs were subjected to 40 ng/mL TNF-α for 48 h, before which the expressions of miR-27a and NELL-1 in hMVICs were altered by stable transfection. Trypan blue staining, BrdU incorporation assay, flow cytometry detection, ELISA, and western blot assay were performed to detect cell proliferation, apoptosis, and the release of proinflammatory cytokines. We found that miR-27a was lowly expressed in response to TNF-α exposure in hMVICs. Overexpression of miR-27a rescued hMVICs from TNF-α-induced inflammatory injury, as cell viability and BrdU incorporation were increased, apoptotic cell rate was decreased, Bcl-2 was up-regulated, Bax and cleaved caspase-3/9 were down-regulated, and the release of IL-1β, IL-6, and MMP-9 were reduced. NELL-1 was positively regulated by miR-27a, and NELL-1 up-regulation exhibited protective functions during TNF-α-induced cell damage. Furthermore, miR-27a blocked JNK and Wnt/β-catenin signaling pathways, and the blockage was abolished when NELL-1 was silenced. This study demonstrated that miR-27a overexpression protected hMVICs from TNF-α-induced cell damage, which might be via up-regulation of NELL-1 and thus modulation of JNK and Wnt/β-catenin signaling pathways.
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Affiliation(s)
- Honglei Chen
- Department of Cardiology, Chengyang People's Hospital, Qingdao, Shandong, China
| | - Zhixu Zhang
- Department of Cardiology, Chengyang People's Hospital, Qingdao, Shandong, China
| | - Li Zhang
- Teaching and Research Office of Immunology, Qingdao University, Qingdao, Shandong, China
| | - Junzhi Wang
- Department of Cardiology, Chengyang People's Hospital, Qingdao, Shandong, China
| | - Minghui Zhang
- Department of Imaging, Eastern District of Linyi People's Hospital, Linyi, Shandong, China
| | - Bin Zhu
- Department of Cardiology, Chengyang People's Hospital, Qingdao, Shandong, China
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21
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Wang CM, Yang XL, Liu MH, Cheng BH, Chen J, Bai B. High-throughput sequencing analysis of differentially expressed miRNAs and target genes in ischemia/reperfusion injury and apelin-13 neuroprotection. Neural Regen Res 2018; 13:265-271. [PMID: 29557376 PMCID: PMC5879898 DOI: 10.4103/1673-5374.226397] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
miRNAs regulate a variety of biological processes through pairing-based regulation of gene expression at the 3′ end of the noncoding region of the target miRNA. miRNAs were found to be abnormally expressed in ischemia/reperfusion injury models. High-throughput sequencing is a recently developed method for sequencing miRNAs and has been widely used in the analysis of miRNAs. In this study, ischemia/reperfusion injury models were intracerebroventricularly injected with 50 μg/kg apelin-13. High-throughput sequencing showed that 357 known miRNAs were differentially expressed among rat models, among which 78 changed to > 2-fold or < 0.5-fold. Quantitative real-time polymerase chain reaction was selected to confirm the expression levels of four miRNAs that were differentially expressed, the results of which were consistent with the results of high-throughput sequencing. Gene Ontology analysis revealed that the predicted targets of the different miRNAs are particularly associated with cellular process, metabolic process, single-organism process, cell, and binding. Kyoto Encyclopedia of Gene and Genome analysis showed that the target genes are involved in metabolic pathways, mitogen-activated protein kinase signaling pathway, calcium signaling pathway, and nuclear factor-κB signaling pathway. Our findings suggest that differentially expressed miRNAs and their target genes play an important role in ischemia/reperfusion injury and neuroprotection by apelin-13.
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Affiliation(s)
- Chun-Mei Wang
- Neurobiology Institute, Jining Medical University, Jining, Shandong Province, China
| | - Xue-Lu Yang
- Neurobiology Institute, Jining Medical University, Jining, Shandong Province, China
| | - Ming-Hui Liu
- Neurobiology Institute, Jining Medical University, Jining, Shandong Province, China
| | - Bao-Hua Cheng
- Neurobiology Institute, Jining Medical University, Jining, Shandong Province, China
| | - Jing Chen
- Neurobiology Institute, Jining Medical University, Jining, Shandong Province, China
| | - Bo Bai
- Neurobiology Institute, Jining Medical University, Jining, Shandong Province, China
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22
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Yang Q, Zhang D, Li Y, Li Y, Li Y. Paclitaxel alleviated liver injury of septic mice by alleviating inflammatory response via microRNA-27a/TAB3/NF-κB signaling pathway. Biomed Pharmacother 2017; 97:1424-1433. [PMID: 29156532 DOI: 10.1016/j.biopha.2017.11.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Revised: 10/28/2017] [Accepted: 11/03/2017] [Indexed: 12/19/2022] Open
Abstract
Excessive inflammatory response and apoptosis play an important role in the sepsis-induced liver injury. Paclitaxel, a diterpene alkaloid of Taxus brevifolia, is widely used as an anti-tumor drug and shows protective effects on acute lung and kidney injury. However, whether it has a protective effect against sepsis-induced liver injury has not been reported. The objective of this study was to investigate the protective effects of paclitaxel in septic liver injury in mice and associated molecular mechanisms. Our results showed that paclitaxel treatment improved LPS-induced liver injury, as evidenced by the reduced aminotransferase activity, histological scores and apoptosis in the liver tissues. This was accompanied by the alleviating of inflammation and oxidative stress, such as decreased levels of tumor necrosis factor alpha (TNF-α), interleukin-1 (IL-6) interleukin-1β (IL-1β) and malondialdehyde (MDA) and increased levels of superoxide dismutase (SOD) and glutathione peroxidase (GSH-px) in serum and liver tissues. Subsequent microarray and qRT-PCR analysis further showed that miR-27a was significantly decreased in mice with sepsis, which was recovered by paclitaxel pretreatment. Antagomir-miR-27a suppressed the therapeutic effects of paclitaxel in mice liver injury model via promoting inflammatory response. Of note, TAB3, which participated in the activation of the NF-κB signaling pathway, was identified as a direct target of miR-27 by luciferase reporter gene assays. Then, we revealed a reverse relationship between miR-27a expression levels and TAB3 mRNA levels in liver tissues from septic mice. Furthermore, paclitaxel treatment significantly decreased the expression of NF-κB p65, but increased inhibitor of nuclear factor-κB-α (IκBα) protein levels in septic mice, suggesting the inactivation of NF-κB signaling pathway. Notably, the inhibitory effects of paclitaxel on NF-κB signaling pathway were reversed by antagomir-miR-27a. Our data indicated that paclitaxel significantly attenuated septic induced liver injury through reducing inflammatory response via miR-27a/TAB3/NF-κB signaling pathway.
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Affiliation(s)
- Qiu Yang
- Department of Gastroenterology, Second Clinical Medical College of Jinan University, Shenzhen People's Hospital, China
| | - Dongshan Zhang
- Departments of Emergency Medicine and Nephrology, Second Xiangya Hospital, Central South University, China
| | - Ya Li
- Department of Nephrology, Second Clinical Medical College of Jinan University, Shenzhen People's Hospital, China
| | - Yongquan Li
- Department of Nephrology, Second Clinical Medical College of Jinan University, Shenzhen People's Hospital, China
| | - Yinpeng Li
- Department of Gastroenterology, Second Clinical Medical College of Jinan University, Shenzhen People's Hospital, China.
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23
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Mao R, Yang R, Chen X, Harhaj EW, Wang X, Fan Y. Regnase-1, a rapid response ribonuclease regulating inflammation and stress responses. Cell Mol Immunol 2017; 14:412-422. [PMID: 28194024 PMCID: PMC5423090 DOI: 10.1038/cmi.2016.70] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2016] [Revised: 11/17/2016] [Accepted: 11/17/2016] [Indexed: 02/07/2023] Open
Abstract
RNA-binding proteins (RBPs) are central players in post-transcriptional regulation and immune homeostasis. The ribonuclease and RBP Regnase-1 exerts critical roles in both immune cells and non-immune cells. Its expression is rapidly induced under diverse conditions including microbial infections, treatment with inflammatory cytokines and chemical or mechanical stimulation. Regnase-1 activation is transient and is subject to negative feedback mechanisms including proteasome-mediated degradation or mucosa-associated lymphoid tissue 1 (MALT1) mediated cleavage. The major function of Regnase-1 is promoting mRNA decay via its ribonuclease activity by specifically targeting a subset of genes in different cell types. In monocytes, Regnase-1 downregulates IL-6 and IL-12B mRNAs, thus mitigating inflammation, whereas in T cells, it restricts T-cell activation by targeting c-Rel, Ox40 and Il-2 transcripts. In cancer cells, Regnase-1 promotes apoptosis by inhibiting anti-apoptotic genes including Bcl2L1, Bcl2A1, RelB and Bcl3. Together with up-frameshift protein-1 (UPF1), Regnase-1 specifically cleaves mRNAs that are active during translation by recognizing a stem-loop (SL) structure within the 3'UTRs of these genes in endoplasmic reticulum-bound ribosomes. Through this mechanism, Regnase-1 rapidly shapes mRNA profiles and associated protein expression, restricts inflammation and maintains immune homeostasis. Dysregulation of Regnase-1 has been described in a multitude of pathological states including autoimmune diseases, cancer and cardiovascular diseases. Here, we provide a comprehensive update on the function, regulation and molecular mechanisms of Regnase-1, and we propose that Regnase-1 may function as a master rapid response gene for cellular adaption triggered by microenvironmental changes.
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Affiliation(s)
- Renfang Mao
- Basic Medical Research Center, School of Medicine, Nantong University, Nantong, Jiangsu 226001, People's Republic of China
| | - Riyun Yang
- Basic Medical Research Center, School of Medicine, Nantong University, Nantong, Jiangsu 226001, People's Republic of China
| | - Xia Chen
- Basic Medical Research Center, School of Medicine, Nantong University, Nantong, Jiangsu 226001, People's Republic of China
| | - Edward W Harhaj
- Department of Oncology, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins School of Medicine, Baltimore, MD 21287, USA
| | - Xiaoying Wang
- Department of Immunology, School of Medicine, Nantong University, Nantong, Jiangsu 226001, People's Republic of China
| | - Yihui Fan
- Basic Medical Research Center, School of Medicine, Nantong University, Nantong, Jiangsu 226001, People's Republic of China
- Department of Immunology, School of Medicine, Nantong University, Nantong, Jiangsu 226001, People's Republic of China
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24
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Lu Z, Liu R, Huang E, Chu Y. MicroRNAs: New regulators of IL-22. Cell Immunol 2016; 304-305:1-8. [PMID: 27221197 DOI: 10.1016/j.cellimm.2016.05.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Revised: 05/11/2016] [Accepted: 05/16/2016] [Indexed: 12/18/2022]
Abstract
Interleukin-22 (IL-22) is a cytokine that belongs to the IL-10 family of interleukins. It can be produced by T helper 22 (Th22) cells, T helper 1 (Th1) cells, T helper 17 (Th17) cells, natural killer 22 (NK22) cells, natural killer T (NKT) cells, innate lymphoid cells (ILCs), and γδ T cells. IL-22 acts via binding to a heterodimeric transmembrane receptor complex that consists of IL-22R1 and IL-10R2 and mainly contributes to the tissue repair and host defense. Transcription factors such as retinoid orphan receptor γt (RORγt) and signal transducer and activator of transcription 3 (STAT3), have been reported to play important roles in regulation of IL-22 expression. Recently, it has been demonstrated in several studies that microRNAs (miRNAs) potently regulate expression of interleukins, including production of IL-22. Here, we review current knowledge about regulators of IL-22 expression with a particular emphasis on the role of miRNAs.
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Affiliation(s)
- Zhou Lu
- Department of Immunology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, People's Republic of China
| | - Ronghua Liu
- Department of Immunology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, People's Republic of China
| | - Enyu Huang
- Department of Immunology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, People's Republic of China
| | - Yiwei Chu
- Department of Immunology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, People's Republic of China; Biotherapy Research Center, Fudan University, Shanghai 200032, People's Republic of China.
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25
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Lv YN, Ou-Yang AJ, Fu LS. MicroRNA-27a Negatively Modulates the Inflammatory Response in Lipopolysaccharide-Stimulated Microglia by Targeting TLR4 and IRAK4. Cell Mol Neurobiol 2016; 37:195-210. [PMID: 26971344 DOI: 10.1007/s10571-016-0361-4] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Accepted: 02/29/2016] [Indexed: 12/30/2022]
Abstract
microRNA, a family of small non-coding RNA, plays significant roles in regulating gene expression, mainly via binding to the 3'-untranslated region of target genes. Although the role of miRNA in regulating neuroinflammation via the innate immune pathway has been studied, its role in the production of inflammatory mediators during microglial activation is poorly understood. In this study, we investigated the effect of miR-27a on lipopolysaccharide (LPS)-induced microglial inflammation. miR-27a expression was found to be rapidly decreased in microglia by real-time polymerase chain reaction (real-time PCR) after LPS stimulation. Over-expression of miR-27a significantly decreased the production of inflammatory cytokines, such as interleukin-6 (IL-6), interleukin-1β (IL-1β), tumor necrosis factor-α (TNF-α), and nitric oxide (NO), whereas knockdown of miR-27a increased the expression of these inflammatory factors. We also demonstrated by loss- and gain-of-function studies that miR-27a directly suppressed the expression of toll-like receptor 4 (TLR4) and interleukin-1 receptor-associated kinase 4 (IRAK4)-a pivotal adaptor kinase in the TLR4/MyD88 signaling pathway-by directly binding their 3'-UTRs: knocking down TLR4 or IRAK4 in microglia significantly decreased TLR4 or IRAK4 expression and inhibited the downstream production of inflammatory mediators. Moreover, the inflammatory cytokines IL-6 and IL-1β were regulated by IRAK4, whereas TNF-α and NO were more dependent on TLR4 activation. Thus, miR-27a might regulate the LPS-induced production of inflammatory cytokines in microglia independently of TLR4 and IRAK4. Taken together, our results suggest that miR-27a is associated with microglial activation and the inflammatory response.
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Affiliation(s)
- Yan-Ni Lv
- Pharmacy Department, The First Affiliated Hospital of Nanchang University, Yongwai Street 17, Nanchang, 330006, People's Republic of China.
| | - Ai-Jun Ou-Yang
- Pharmacy Department, The First Affiliated Hospital of Nanchang University, Yongwai Street 17, Nanchang, 330006, People's Republic of China
| | - Long-Sheng Fu
- Pharmacy Department, The First Affiliated Hospital of Nanchang University, Yongwai Street 17, Nanchang, 330006, People's Republic of China
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