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Xue L, Hu M, Zhu Q, Li Y, Zhou G, Zhang X, Zhou Y, Zhang J, Ding P. GRg1 inhibits the TLR4/NF-kB signaling pathway by upregulating miR-216a-5p to reduce growth factors and inflammatory cytokines in DR. Mol Biol Rep 2023; 50:9379-9394. [PMID: 37819496 PMCID: PMC10635910 DOI: 10.1007/s11033-023-08895-3] [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: 04/09/2023] [Accepted: 10/04/2023] [Indexed: 10/13/2023]
Abstract
BACKGROUND Diabetic retinopathy (DR) is a common diabetic neurodegenerative disease that affects vision in severe cases. Current therapeutic drugs are ineffective for some patients with severe side effects, and ginsenoside-Rg1 (GRg1) has been shown to protect against DR and may serve as a new potential drug for DR. This study aimed to confirm the protective effect of GRg1 against DR and its molecular mechanism. METHODS Human retinal microvascular endothelial cells (hRMECs) and rats were used to construct DR models in vitro and in vivo. Cell proliferation was detected by BrdU assays, the cell cycle was detected by flow cytometry, and TNF-α, IL-6 and IL-1β levels were detected by ELISA. qRT‒PCR, Western blotting and immunohistochemistry were used to detect the expression of related genes and proteins, and angiogenesis assays were used to assess angiogenesis. RIP and RNA pull down assays were used to determine the relationship between miR-216a-5p and TLR4; retinal structure and changes were observed by HE staining and retinal digestive spread assays. RESULTS GRg1 effectively inhibited HG-induced hRMEC proliferation, cell cycle progression and angiogenesis and reduced the levels of intracellular inflammatory cytokines and growth factors. HG downregulated the expression of miR-216a-5p and upregulated the expression of TLR4/NF-kB signaling pathway-related proteins. Importantly, GRg1 inhibited TLR4/NF-kB signaling pathway activation by upregulating miR-216a-5p, thereby inhibiting HG-induced cell proliferation, cell cycle progression, angiogenesis, and the production of inflammatory cytokines and growth factors. In addition, animal experiments confirmed the results of the cell experiments. CONCLUSIONS GRg1 inhibits TLR4/NF-kB signaling by upregulating miR-216a-5p to reduce growth factors and inflammatory cytokines in DR, providing a potential therapeutic strategy for DR.
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Affiliation(s)
- Liping Xue
- Department of Pediatric Ophthalmology, The Affiliated Hospital of Yunnan University; The Second People's Hospital of Yunnan; The Affiliated Ophthalmology Hospital of Yunnan University, Kunming, 650021, Yunnan, China
| | - Min Hu
- Department of Pediatric Ophthalmology, The Affiliated Hospital of Yunnan University; The Second People's Hospital of Yunnan; The Affiliated Ophthalmology Hospital of Yunnan University, Kunming, 650021, Yunnan, China
| | - Qin Zhu
- Department of Pediatric Ophthalmology, The Affiliated Hospital of Yunnan University; The Second People's Hospital of Yunnan; The Affiliated Ophthalmology Hospital of Yunnan University, Kunming, 650021, Yunnan, China
| | - Yadi Li
- Department of Pediatric Ophthalmology, The Affiliated Hospital of Yunnan University; The Second People's Hospital of Yunnan; The Affiliated Ophthalmology Hospital of Yunnan University, Kunming, 650021, Yunnan, China
| | - Guanglong Zhou
- Department of Pediatric Ophthalmology, The Affiliated Hospital of Yunnan University; The Second People's Hospital of Yunnan; The Affiliated Ophthalmology Hospital of Yunnan University, Kunming, 650021, Yunnan, China
| | - Xiaofan Zhang
- Department of Pediatric Ophthalmology, The Affiliated Hospital of Yunnan University; The Second People's Hospital of Yunnan; The Affiliated Ophthalmology Hospital of Yunnan University, Kunming, 650021, Yunnan, China
| | - Yuan Zhou
- Department of Pediatric Ophthalmology, The Affiliated Hospital of Yunnan University; The Second People's Hospital of Yunnan; The Affiliated Ophthalmology Hospital of Yunnan University, Kunming, 650021, Yunnan, China
| | - Jieying Zhang
- Department of Pediatric Ophthalmology, The Affiliated Hospital of Yunnan University; The Second People's Hospital of Yunnan; The Affiliated Ophthalmology Hospital of Yunnan University, Kunming, 650021, Yunnan, China
| | - Peng Ding
- Department of Neurosurgery, The First Affiliated Hospital of Kunming Medical University, Kunming, 650032, Yunnan, China.
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Lin L, Song Q, Cheng W, Liu C, Zhou A, Zhou Z, Chen P. MiR-216a reduces apoptosis of pulmonary microvascular endothelial cells in COPD by targeting DNMT1. Tob Induc Dis 2023; 21:130. [PMID: 37822364 PMCID: PMC10563178 DOI: 10.18332/tid/171357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 08/16/2023] [Accepted: 08/20/2023] [Indexed: 10/13/2023] Open
Abstract
INTRODUCTION Abnormal apoptosis of pulmonary microvascular endothelial cells (PMVECs) participates in the pathogenesis of COPD. Studies have shown that microRNAs (miRNAs) contribute to the pathogenesis of pulmonary diseases by regulating cell apoptosis. The present study aimed to investigate the effects of miR-216a in cigarette smoke extract (CSE)-induced apoptosis of PMVECs in COPD and explore the potential mechanisms. METHODS The emphysema model mice were treated with CSE and CS exposure. The expression of miR-216a and DNA methyltransferase 1 (DNMT1) was assessed in emphysema mice and COPD patients. The miR-216a mimic and Lenti-DNMT1 were transfected into PMVECs to identify the underlying mechanisms. The expression levels of miR-216a and DNMT1 were detected by real-time quantitative polymerase chain reaction (RT-qPCR) or Western blot. Moreover, cell apoptosis was examined by flow cytometry assays. RESULTS The results show that the expression of miR-216a was decreased, whereas the expression of DNMT1 was increased in the lung tissue of emphysema mice and COPD patients. In addition, the expression of miR-216a was significantly reduced in CSE-treated PMVECs, and the overexpression of miR-216a attenuated CSE-induced PMVEC apoptosis. Furthermore, the expression of DNMT1 was increased in the CSE-induced PMVECs and then was reduced after the overexpression of miR-216a in the CSE-stimulated PMVECs. Luciferase reporter assays confirmed the target reaction between miR-216a and DNMT1. Also, the overexpression of DNMT1 was able to reverse the anti-apoptotic effect of miR-216a in CSE-induced PMVECs. CONCLUSIONS The results indicate that miR-216a may play a crucial role in CSE-induced apoptosis by directly regulating its target gene DNMT1 in COPD. It provides insights into the function of MiR-216a/DNMT1 as a potential molecule in COPD.
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Affiliation(s)
- Ling Lin
- Department of Respiratory and Critical Care Medicine, the Second Xiangya Hospital, Central South University, Changsha, China
- Research Unit of Respiratory Disease, Central South University, Changsha, China
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, China
| | - Qing Song
- Department of Respiratory and Critical Care Medicine, the Second Xiangya Hospital, Central South University, Changsha, China
- Research Unit of Respiratory Disease, Central South University, Changsha, China
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, China
| | - Wei Cheng
- Department of Respiratory and Critical Care Medicine, the Second Xiangya Hospital, Central South University, Changsha, China
- Research Unit of Respiratory Disease, Central South University, Changsha, China
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, China
| | - Cong Liu
- Department of Respiratory and Critical Care Medicine, the Second Xiangya Hospital, Central South University, Changsha, China
- Research Unit of Respiratory Disease, Central South University, Changsha, China
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, China
| | - Aiyuan Zhou
- Department of Respiratory and Critical Care Medicine, the Xiangya Hospital, Central South University, Changsha, China
| | - Zijing Zhou
- Department of Respiratory and Critical Care Medicine, the Second Xiangya Hospital, Central South University, Changsha, China
- Research Unit of Respiratory Disease, Central South University, Changsha, China
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, China
| | - Ping Chen
- Department of Respiratory and Critical Care Medicine, the Second Xiangya Hospital, Central South University, Changsha, China
- Research Unit of Respiratory Disease, Central South University, Changsha, China
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, China
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Elkjaer ML, Lohse RM, Burton M, Mendoza JP, Thomassen M, Sejbaek T, Illes Z. Whole blood miRNAs in relapsing MS patients treated with dimethyl fumarate in the phase 4 TREMEND trial. J Neuroimmunol 2023; 381:578145. [PMID: 37393851 DOI: 10.1016/j.jneuroim.2023.578145] [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: 05/17/2023] [Revised: 06/20/2023] [Accepted: 06/25/2023] [Indexed: 07/04/2023]
Abstract
We investigated the impact of dimethyl fumarate (DMF), an oral therapy for relapsing multiple sclerosis (MS), on blood microRNA (miRNA) signatures and neurofilament light (NFL) levels. DMF normalized miR-660-5p and modulated various miRNAs associated with the NF-kB pathway. These alterations reached a peak 4-7 months after treatment. Notably, particular miRNAs correlated with high or low NFL levels, implying their potential role as markers of treatment efficacy. Our findings broaden the understanding of DMF's immunomodulatory effects and may aid in predicting treatment responses.
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Affiliation(s)
- Maria L Elkjaer
- Department of Neurology, Odense University Hospital, Odense, Denmark; Department of Clinical Research, BRIDGE, University of Southern Denmark, Odense, Denmark; Institute of Molecular Medicine, University of Southern Denmark, Odense, Denmark.
| | - Rikke M Lohse
- Department of Neurology, Odense University Hospital, Odense, Denmark; Department of Clinical Research, BRIDGE, University of Southern Denmark, Odense, Denmark; Institute of Molecular Medicine, University of Southern Denmark, Odense, Denmark
| | - Mark Burton
- Department of Clinical Genetics, Odense University Hospital, Odense, Denmark; Clinical Genome Center, University of Southern Denmark & Region of Southern Denmark, Odense, Denmark; Human Genetics, Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | | | - Mads Thomassen
- Department of Clinical Research, BRIDGE, University of Southern Denmark, Odense, Denmark; Department of Clinical Genetics, Odense University Hospital, Odense, Denmark; Clinical Genome Center, University of Southern Denmark & Region of Southern Denmark, Odense, Denmark; Human Genetics, Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Tobias Sejbaek
- Department of Neurology, Hospital of Southwest Jutland, Esbjerg, Denmark
| | - Zsolt Illes
- Department of Neurology, Odense University Hospital, Odense, Denmark; Department of Clinical Research, BRIDGE, University of Southern Denmark, Odense, Denmark; Institute of Molecular Medicine, University of Southern Denmark, Odense, Denmark.
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Huang Q, Weng D, Yao S, Shen H, Gao S, Zhang Y, Huang W, Wang Y, Wang H, Xu W. Progranulin deficiency suppresses allergic asthma and enhances efferocytosis via PPAR-γ/MFG-E8 regulation in macrophages. Immun Inflamm Dis 2023; 11:e779. [PMID: 36840485 PMCID: PMC9910167 DOI: 10.1002/iid3.779] [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: 09/07/2022] [Revised: 01/17/2023] [Accepted: 01/20/2023] [Indexed: 02/11/2023] Open
Abstract
Efferocytosis can resolve airway inflammation and enhance airway tolerance in allergic asthma. While previous work has reported that progranulin (PGRN) regulated macrophage efferocytosis, but it is unclear whether PGRN-mediated efferocytosis is associated with asthma. Here, we found that in an ovalbumin (OVA)-induced allergic asthma model, the airway inflammation was suppressed and the apoptosis in lung tissues was ameliorated in PGRN-deficient mice. In contrast, PGRN knockdown in human bronchial epithelial cells increased apoptosis in vitro. Furthermore, PGRN-deficient macrophages had significantly stronger efferocytosis ability than wild type (WT) macrophages both in vitro and in vivo. PGRN-deficient peritoneal macrophages (PMs) exhibited increased expression of genes associated with efferocytosis including milk fat globule-epidermal growth factor 8 (MFG-E8), peroxisome proliferator-activated receptor gamma (PPAR-γ) and sirtuin1 (SIRT1) and increased capacity to produce the anti-inflammatory mediator interleukin (IL)-10 during efferocytosis. GW9662, the inhibitor of PPAR-γ, abolished increased efferocytosis and MFG-E8 expression in PGRN-deficient PMs suggesting that PGRN deficiency enhanced MFG-E8-mediated efferocytosis through PPAR-γ. Correspondingly, efferocytosis genes were increased in the lungs of OVA-induced PGRN-deficient mice. GW9662 treatment reduced MFG-E8 expression but did not significantly affect airway inflammation. Our results demonstrated that PGRN deficiency enhanced efferocytosis via the PPAR-γ/MFG-E8 pathway and this may be one of the reasons PGRN deficiency results in inhibition of airway inflammation in allergic asthma.
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Affiliation(s)
- Qi Huang
- Key Laboratory of Laboratory Medical Diagnostics Designated by the Ministry of Education, School of Laboratory MedicineChongqing Medical UniversityChongqingPeople's Republic of China
| | - Danlin Weng
- Key Laboratory of Laboratory Medical Diagnostics Designated by the Ministry of Education, School of Laboratory MedicineChongqing Medical UniversityChongqingPeople's Republic of China
| | - Shifei Yao
- Key Laboratory of Laboratory Medical Diagnostics Designated by the Ministry of Education, School of Laboratory MedicineChongqing Medical UniversityChongqingPeople's Republic of China
| | - Hailan Shen
- Department of laboratory medicineThe first affiliated hospital of Chongqing medical universityChongqingPeople's Republic of China
| | - Song Gao
- Department of Laboratory Medicine, School of Laboratory Medicine, Affiliated Hospital of Zunyi Medical UniversityZunyi Medical UniversityZunyiPeople's Republic of China
| | - Yanyu Zhang
- Key Laboratory of Laboratory Medical Diagnostics Designated by the Ministry of Education, School of Laboratory MedicineChongqing Medical UniversityChongqingPeople's Republic of China
| | - Wenjie Huang
- Key Laboratory of Laboratory Medical Diagnostics Designated by the Ministry of Education, School of Laboratory MedicineChongqing Medical UniversityChongqingPeople's Republic of China
| | - Yan Wang
- Key Laboratory of Laboratory Medical Diagnostics Designated by the Ministry of Education, School of Laboratory MedicineChongqing Medical UniversityChongqingPeople's Republic of China
| | - Hong Wang
- Key Laboratory of Laboratory Medical Diagnostics Designated by the Ministry of Education, School of Laboratory MedicineChongqing Medical UniversityChongqingPeople's Republic of China
| | - Wenchun Xu
- Key Laboratory of Laboratory Medical Diagnostics Designated by the Ministry of Education, School of Laboratory MedicineChongqing Medical UniversityChongqingPeople's Republic of China
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5
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Su D, Huang Y, Liu D, Huang Y, Ye B, Qin S, Chen C, Pang Y. Bioinformatic analysis of dysregulated circular RNAs in pediatric pulmonary hypertension linked congenital heart disease. Transl Pediatr 2022; 11:715-727. [PMID: 35685074 PMCID: PMC9173884 DOI: 10.21037/tp-22-117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Accepted: 04/28/2022] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Circular RNAs (circRNAs) may play important roles in the progression of pulmonary arterial hypertension. However, the potential roles they play in childhood pulmonary arterial hypertension associated congenital heart disease (CHD) progression remains unclear. METHODS Thirteen human plasma samples including eight from pulmonary arterial hypertension secondary to CHD patients and five from a control group were analyzed using the Arraystar Human circRNA array. The relative expression levels of five differentially expressed circRNAs in pulmonary arterial hypertension were detected using real-time polymerase chain reaction (PCR) analysis. In parallel, these levels were also taken on control samples from 32 CHD patients. We used miRanda and TargetScan software packages to predict potential microRNA (miRNA)targets, which were then combined into a circRNA-miRNA-messenger RNA (mRNA) network. RESULTS Twenty-seven circRNAs (three upregulated and 24 downregulated) were differentially expressed between the pulmonary arterial hypertension and control groups. Compared to control group levels, circ_003416 expression in the pulmonary arterial hypertension group was significantly downregulated, while circ_005372 expression, in contrast, was significantly upregulated. The differential expression of these circRNAs was mainly linked to variation in levels of oxidative phosphorylation and tight junction signaling. CONCLUSIONS We identified one overexpressed and one underexpressed circRNA in plasma samples from children with CHD associated pulmonary arterial hypertension. Bioinformatic analysis indicated these dysregulated circRNAs might be associated with the occurrence and regulation of pulmonary arterial hypertension.
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Affiliation(s)
- Danyan Su
- Department of Pediatrics, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Yanyun Huang
- Department of Pediatrics, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Dongli Liu
- Department of Pediatrics, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Yuqin Huang
- Department of Pediatrics, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Bingbing Ye
- Department of Pediatrics, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Suyuan Qin
- Department of Pediatrics, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Cheng Chen
- Department of Pediatrics, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Yusheng Pang
- Department of Pediatrics, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
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6
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Liu L, Jia Y, Zhang X, Chen S, Wang S, Zhu J, Zheng L, Chen Z, Huang L. Identification of the function and regulatory network of circ_009773 in DNA damage induced by nanoparticles of neodymium oxide. Toxicol In Vitro 2021; 78:105271. [PMID: 34740776 DOI: 10.1016/j.tiv.2021.105271] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 10/07/2021] [Accepted: 10/29/2021] [Indexed: 12/28/2022]
Abstract
The health hazards of nanoparticles of neodymium oxide (NPs-Nd2O3) have aroused public concern in recent years. Exposure to NPs-Nd2O3 can change the level of reactive oxygen species (ROS) that cause DNA damage and alter whole transcriptome expression profiles for micro (mi)RNA, circular (circ)RNA, long noncoding (lnc)RNA, and mRNA. However, there have been no reports to our knowledge about the role of circRNAs in DNA damage caused by NPs-Nd2O3. In our study, we analyzed the circRNA expression profile of human bronchial epithelial cells(16HBE)exposed to 40 μg/ml NPs-Nd2O3. Our results indicated that exposure produced 1025 up-regulated and 890 down-regulated circRNAs. Real-time quantitative polymerase chain reaction (qRT-PCR) was applied to verify some of the significantly changed circRNAs and demonstrated that circ_009773 was apparently down-regulated. Through exploration of its host gene function, we found that circ_009773 may be related to DNA damage. Functional experiments found that circ_009773 regulated NPs-Nd2O3-induced DNA damage in 16HBE cells. A circ_009773-associated competing endogenous (ce)RNA network was constructed based on one differentially expressed (DE) circRNA, 74 DE miRNAs and 208 DE mRNAs. Module analysis identified hub genes related to DNA damage and repair and a protein-protein interaction (PPI) network was created.
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Affiliation(s)
- Ling Liu
- School of Public Health, Baotou Medical College, Baotou 014030, Inner Mongolia, China
| | - Yangyang Jia
- School of Public Health, Guangzhou Medical University, Guangzhou 511436, Guangdong Province, China
| | - Xia Zhang
- School of Public Health, Baotou Medical College, Baotou 014030, Inner Mongolia, China
| | - Shijie Chen
- School of Public Health, Baotou Medical College, Baotou 014030, Inner Mongolia, China
| | - Suhua Wang
- School of Public Health, Baotou Medical College, Baotou 014030, Inner Mongolia, China
| | - Jialu Zhu
- School of Public Health, Guangzhou Medical University, Guangzhou 511436, Guangdong Province, China
| | - Liting Zheng
- School of Public Health, Guangzhou Medical University, Guangzhou 511436, Guangdong Province, China
| | - Zhehao Chen
- School of Public Health, Guangzhou Medical University, Guangzhou 511436, Guangdong Province, China
| | - Lihua Huang
- School of Public Health, Baotou Medical College, Baotou 014030, Inner Mongolia, China.
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7
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Liu W, Xi W, Li Y, Hai K, Zhou X, Wang Y, Ye Q. MicroRNA-216a-5p in lipopolysaccharide-induced endothelial injury. Exp Ther Med 2021; 22:1426. [PMID: 34707707 PMCID: PMC8543236 DOI: 10.3892/etm.2021.10861] [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: 04/05/2021] [Accepted: 08/05/2021] [Indexed: 12/25/2022] Open
Abstract
MicroRNAs (miRNAs/miRs) are a type of non-coding RNA that are closely associated with disease development and treatment. The present study aimed to investigate the role of miR-216a-5p in lipopolysaccharide (LPS)-induced endothelial injury in vitro. The EdU assay was performed to detect EdU-positive cells, while flow cytometric analysis was performed to detect apoptotic cells. Reverse transcription-quantitative PCR and western blot analyses were performed to detect the expression levels of miR-216a-5p, Toll-like receptor 4 (TLR4), MyD88 and nuclear factor (NF)-κB(p65) and phosphorylated (p)-NF-κB(p65). Furthermore, p-NF-κB(p65) nuclear expression level was detected via cellular immunofluorescence. The dual-luciferase reporter assay was performed to verify the association between miR-216a-5p and TLR4. The results demonstrated that the number of EdU-positive cells significantly decreased, the apoptotic rate significantly increased, and TLR4, MyD88 and NF-κB(p65) mRNA expression levels were significantly upregulated.TLR4, MyD88 and p-NF-κB(p65) protein expression levels were significantly upregulated and p-NF-κB(p65) nuclear concentration was significantly enhanced in the small interfering RNA-miR-216a-5p and LPS groups (P<0.001, respectively) compared with the negative control group. However, the addition of miR-216a-5p significantly increased the number of EdU-positive cells, significantly decreased the apoptotic rate and significantly downregulated the mRNA expression levels of TLR4, MyD88 and NF-κB(p65), as well as the protein expression levels of TLR4, MyD88 and p-NF-κB(p65). In addition, the p-NF-κB(p65) nuclear concentration was significantly decreased in the miR-216a-5p group (P<0.001, respectively) compared with the LPS group. Taken together, the results suggest that overexpression of miR-216a-5p suppresses the effects of LPS induced endothelial injury.
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Affiliation(s)
- Wenxun Liu
- Department of Anesthesiology, Ningxia Medical University, Yinchuan, Gansu 750004, P.R. China.,Department of Anesthesiology, People's Hospital of Ningxia Hui Autonomous Region, Yinchuan, Ningxia 750002, P.R. China
| | - Wenhua Xi
- Department of Anesthesiology, Ningxia Medical University, Yinchuan, Gansu 750004, P.R. China.,Department of Anesthesiology, People's Hospital of Ningxia Hui Autonomous Region, Yinchuan, Ningxia 750002, P.R. China
| | - Yan Li
- Department of Anesthesiology, Ningxia Medical University, Yinchuan, Gansu 750004, P.R. China.,Department of Anesthesiology, People's Hospital of Ningxia Hui Autonomous Region, Yinchuan, Ningxia 750002, P.R. China
| | - Kerong Hai
- Department of Anesthesiology, People's Hospital of Ningxia Hui Autonomous Region, Yinchuan, Ningxia 750002, P.R. China.,Ningxia Anesthesia Clinical Medical Research Center, Yinchuan, Ningxia 750002, P.R. China
| | - Xiaohong Zhou
- Department of Anesthesiology, People's Hospital of Ningxia Hui Autonomous Region, Yinchuan, Ningxia 750002, P.R. China.,Ningxia Anesthesia Clinical Medical Research Center, Yinchuan, Ningxia 750002, P.R. China
| | - Yun Wang
- Department of Anesthesiology, People's Hospital of Ningxia Hui Autonomous Region, Yinchuan, Ningxia 750002, P.R. China.,Ningxia Anesthesia Clinical Medical Research Center, Yinchuan, Ningxia 750002, P.R. China
| | - Qingshan Ye
- Department of Anesthesiology, People's Hospital of Ningxia Hui Autonomous Region, Yinchuan, Ningxia 750002, P.R. China.,Ningxia Anesthesia Clinical Medical Research Center, Yinchuan, Ningxia 750002, P.R. China
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8
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BACH1, the master regulator of oxidative stress, has a dual effect on CFTR expression. Biochem J 2021; 478:3741-3756. [PMID: 34605540 PMCID: PMC8589331 DOI: 10.1042/bcj20210252] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 09/30/2021] [Accepted: 10/01/2021] [Indexed: 02/07/2023]
Abstract
The cystic fibrosis transmembrane conductance regulator (CFTR) gene lies within a topologically associated domain (TAD) in which multiple cis-regulatory elements (CREs) and transcription factors (TFs) regulate its cell-specific expression. The CREs are recruited to the gene promoter by a looping mechanism that depends upon both architectural proteins and specific TFs. An siRNA screen to identify TFs coordinating CFTR expression in airway epithelial cells suggested an activating role for BTB domain and CNC homolog 1 (BACH1). BACH1 is a ubiquitous master regulator of the cellular response to oxidative stress. Here, we show that BACH1 may have a dual effect on CFTR expression by direct occupancy of CREs at physiological oxygen (∼8%), while indirectly modulating expression under conditions of oxidative stress. Hence BACH1, can activate or repress the same gene, to fine tune expression in response to environmental cues such as cell stress. Furthermore, our 4C-seq data suggest that BACH1 can also directly regulate CFTR gene expression by modulating locus architecture through occupancy at known enhancers and structural elements, and depletion of BACH1 alters the higher order chromatin structure.
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9
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Su Y, Geng L, Ma Y, Yu X, Kang Z, Kang Z. Identification of circular RNA circVPS33A as a modulator in house dust mite-induced injury in human bronchial epithelial cells. Exp Lung Res 2021; 47:368-381. [PMID: 34511010 DOI: 10.1080/01902148.2021.1974125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
BACKGROUND House dust mite has been well documented as a major source of allergen in asthma. Circular RNAs (circRNAs) vacuolar protein sorting 33A (circVPS33A, circ_0000455) is overexpressed in a murine asthma model. Herein, we sought to identify its critical action in Dermatophagoides pteronyssinus peptidase 1 (Der p1)-induced dysfunction of BEAS-2B cells. METHODS The levels of circVPS33A, microRNA (miR)-192-5p, and high-mobility group box 1 (HMGB1) were assessed by quantitative real-time PCR (qRT-PCR) or western blot. Actinomycin D treatment and Ribonuclease R (RNase R) assay were used to characterize circVPS33A. Cell viability, proliferation, apoptosis, migration, and invasion were evaluated by Cell Counting Kit-8 (CCK-8), 5-ethynyl-2'-deoxyuridine (EdU), flow cytometry, and transwell assays, respectively. Enzyme-linked immunosorbent assay (ELISA) was used to quantify interleukin-1β (IL-1β), tumor necrosis factor-α (TNF-α), and IL-6. Direct relationship between miR-192-5p and circVPS33A or HMGB1 was verified by dual-luciferase reporter and RNA immunoprecipitation (RIP) assay. RESULTS CircVPS33A was highly expressed in asthma plasma and Der p1-treated BEAS-2B cells. Knocking down circVPS33A suppressed Der p1-induced injury in BEAS-2B cells. CircVPS33A targeted miR-192-5p. MiR-192-5p directly targeted HMGB1, and miR-192-5p-mediated repression of HMGB1 alleviated Der p1-driven cell injury. Furthermore, circVPS33A modulated HMGB1 expression through miR-192-5p. CONCLUSION Our findings demonstrated that circVPS33A regulated house dust mite-induced injury in human bronchial epithelial cells at least partially depending on the modulation of the miR-192-5p/HMGB1 axis.
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Affiliation(s)
- Yinghao Su
- Department of Respiratory and Critical Care Medicine, Hebei Provincial Hospital of Traditional Chinese Medicine, Shijiazhuang, Hebei Province, China
| | - Limei Geng
- Department of Respiratory and Critical Care Medicine, Hebei Provincial Hospital of Traditional Chinese Medicine, Shijiazhuang, Hebei Province, China
| | - Yunlei Ma
- Department of Respiratory and Critical Care Medicine, Hebei Provincial Hospital of Traditional Chinese Medicine, Shijiazhuang, Hebei Province, China
| | - Xiangyan Yu
- Department of Respiratory and Critical Care Medicine, Hebei Provincial Hospital of Traditional Chinese Medicine, Shijiazhuang, Hebei Province, China
| | - Ziyi Kang
- Department of Respiratory and Critical Care Medicine, Hebei Provincial Hospital of Traditional Chinese Medicine, Shijiazhuang, Hebei Province, China
| | - Zenglu Kang
- Department of Respiratory and Critical Care Medicine, Hebei Provincial Hospital of Traditional Chinese Medicine, Shijiazhuang, Hebei Province, China
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Zhenzhen Z, Fenghao L, Meina M, Rui L, Wenbo S, Qi W. Targeting HMGB1-TLR4 signaling by miR-216a-5p elevation alleviates the inflammatory behavioral hypersensitivity. Neurosci Lett 2021; 759:136043. [PMID: 34118309 DOI: 10.1016/j.neulet.2021.136043] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 06/04/2021] [Accepted: 06/07/2021] [Indexed: 01/28/2023]
Abstract
Neuroinflammation induced by microglial activation has a critical role in inflammatory pain. In this study, we detected the function of miR-216a-5p in the progression of inflammatory behavioral hypersensitivity. Here, decreases of miR-216a-5p and up-regulation of high-mobility group box1 (HMGB1) were observed in complete freund's adjuvant (CFA)-induced inflammatory pain model in mice and LSP-activated BV2 microglia. HMGB1 was identified as a target of miR-216a-5p by luciferase reporter system. Ectopic expression of miR-216a-5p suppressed microglial marker IBA-1 expression and subsequent pro-inflammatory cytokine releases (IL-1β, IL-6 and TNF-α) from LPS-activated microglia. Additionally, LPS exposure enhanced the protein expression levels of HMGB1, TLR4 and p-p65 NF-kB in microglia, which were abrogated following miR-216a-5p overexpression. Intriguingly, transfection of HMGN1 cDNA into BV2 microglial cells reversed the inhibitory effects of miR-216a-5p elevation on microglial activation-triggered inflammatory response. Intrathecal delivery of LV-miR-216a-5-p ameliorated CFA-evoked mechanical and thermal hyperalgesia in mice. Concomitantly, overexpressing miR-216a-5p also restrained the inflammatory response and microglia activation in CFA-induced inflammatory mouse models, concomitant with the decreases in the expression of HMGB1, TLR4 and p-p65 NF-kB in spinal cord. Thus, these findings highlight that miR-216a-5p may alleviate inflammatory behavioral hypersensitivity by blocking microglia-mediated neuroinflammation via targeting the HMGB1-TLR4-NF-kB pathway, supporting miR-216a-5p as a potential therapeutic avenue for inflammatory pain.
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Affiliation(s)
- Zhou Zhenzhen
- Department of Anesthesiology, Cangzhou Central Hospital, Cangzhou City, Hebei Province 061001, PR China.
| | - Liu Fenghao
- Department of General Surgery, Cangzhou Central Hospital, Cangzhou City, Hebei Province 061001, PR China
| | - Ma Meina
- Department of Anesthesiology, Cangzhou Central Hospital, Cangzhou City, Hebei Province 061001, PR China
| | - Li Rui
- Department of Anesthesiology, Cangzhou Central Hospital, Cangzhou City, Hebei Province 061001, PR China
| | - Sun Wenbo
- Department of Anesthesiology, Cangzhou Central Hospital, Cangzhou City, Hebei Province 061001, PR China
| | - Wang Qi
- Department of Anesthesiology, Cangzhou Central Hospital, Cangzhou City, Hebei Province 061001, PR China
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11
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MiR-216a-5p ameliorates learning-memory deficits and neuroinflammatory response of Alzheimer's disease mice via regulation of HMGB1/NF-κB signaling. Brain Res 2021; 1766:147511. [PMID: 33957091 DOI: 10.1016/j.brainres.2021.147511] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 04/21/2021] [Accepted: 04/28/2021] [Indexed: 01/25/2023]
Abstract
OBJECTIVE The objective of this study was to explore whether miR-216a-5p could affect the learning-memory ability and inflammatory response of Alzheimer's disease (AD) mice via regulation of the HMGB1/NF-κB pathway. METHODS Mice were divided into the normal (wild-type C57BL/6 mice), AD (APP/PS1 double-transgenic mice), AD + miR-216a-5p, and AD + vector groups. The Morris water maze test was used to examine learning and memory ability. Nissl staining and TUNEL staining were performed to observe the survival and apoptosis of hippocampal neurons. In addition, Aβ deposition and the expression of inflammatory cytokines were determined, while miR-216a-5p expression and HMGB1/NF-κB pathway-related proteins were detected by qRT-PCR and Western blotting, respectively. RESULTS AD mice exhibited decreased miR-216a-5p expression but increased HMGB-1 protein expression in the hippocampus, and these mice had a prolonged escape latency, fewer number of times crossing the platform location and shortened time in the target quadrant compared to those in normal mice. AD mice also had an elevated number of TUNEL-positive cells, increased deposition of Aβ, increased expression of inflammatory cytokines and decreased number of Nissl-positive cells. In addition, AD mice presented with downregulated expression of cytoplasmic NF-κB p65 protein but upregulated expression of nuclear NF-κB p65 protein. However, AD mice treated with miR-216a-5p exhibited significant improvements of the abovementioned parameters. The dual-luciferase reporter assay confirmed that HMGB1 is a target gene of miR-216a-5p. CONCLUSION MiR-216a-5p can improve learning-memory ability and attenuate the inflammatory response of AD mice through targeted inhibition of the HMGB1/NF-κB pathway.
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12
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The Protective Effects of Maresin 1 in the OVA-Induced Asthma Mouse Model. Mediators Inflamm 2021; 2021:4131420. [PMID: 33628113 PMCID: PMC7889371 DOI: 10.1155/2021/4131420] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 12/11/2020] [Accepted: 01/29/2021] [Indexed: 12/18/2022] Open
Abstract
Asthma is a chronic inflammatory disease that cannot be cured. Maresin 1 (MaR1) is a specific lipid synthesized by macrophages that exhibits powerful anti-inflammatory effects in various inflammatory diseases. The goal of this study was to evaluate the effect of MaR1 on allergic asthma using an ovalbumin- (OVA-) induced asthma model. Thirty BALB/c mice were randomly allocated to control, OVA, and MaR1 + OVA groups. Mice were sacrificed 24 hours after the end of the last challenge, and serum, bronchoalveolar lavage fluid (BALF), and lung tissue were collected for further analysis. Western blotting was used to measure the protein level of IκBα, the activation of the NF-κB signaling pathway, and the expression of NF-κB downstream inflammatory cytokines. Quantitative real-time polymerase chain reactions (qRT-PCRs) were used to evaluate the expression levels of COX-2 and ICAM-1 in lung tissues. We found that high doses of MaR1 were most effective in preventing OVA-induced inflammatory cell infiltration and excessive mucus production in lung tissue, reducing the number of inflammatory cells in the BALF and inhibiting the expression of serum or BALF-associated inflammatory factors. Furthermore, high-dose MaR1 treatment markedly suppressed the activation of the NF-κB signaling pathway, the degradation of IκBα, and the expression of inflammatory genes downstream of NF-κB, such as COX-2 and ICAM-1, in the OVA-induced asthma mouse model. Our findings indicate that MaR1 may play a critical role in OVA-induced asthma and may be therapeutically useful for the management of asthma.
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Qian X, Xu Q, Li G, Bu Y, Sun F, Zhang J. Therapeutic Effect of Idebenone on Rats with Vascular Dementia via the MicroRNA-216a/RSK2/NF-κB Axis. Neuropsychiatr Dis Treat 2021; 17:533-543. [PMID: 33628024 PMCID: PMC7898207 DOI: 10.2147/ndt.s293614] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Accepted: 01/25/2021] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Vascular dementia (VD) is a brain disease featured by cognitive impairment and cerebrovascular pathologies. Idebenone can treat neurodegenerative diseases. This study evaluated the mechanism of Idebenone in VD. METHODS The VD rat model was established by permanent occlusion of bilateral common carotid arteries, followed by intragastrical administration of Idebenone. The learning and spatial memory abilities, and the levels of MDA, SOD, IL-6 and TNF-α were measured. Histological staining was adopted to observe the damage of neurons in the hippocampal cortex and to quantitatively analyze the neuronal damage in CA1 area of hippocampus. Microarray analysis was performed to find out the effect of Idebenone treatment on microRNA (miR) expression in hippocampus of rats. The potential target genes of miR and the pathways regulated by target genes were searched by bioinformatics analysis, and verified by experiments. The mechanism of action behind Idebenone in VD rats was proved by rescue experiment. RESULTS Idebenone treatment improved the learning and spatial memory abilities of VD rats, inhibited neuroinflammation and oxidative stress, and prevented neuronal apoptosis. Idebenone treatment elevated miR-216a expression in hippocampus of rats, but the therapeutic effect of Idebenone was averted by lentivirus inhibition of miR-216a. miR-216a targeted RSK2. Overexpression of RSK2 annulled the therapeutic effect of Idebenone on VD rats by activating the IκBα/NF-κB axis. CONCLUSION Idebenone inhibits the activation of RSK2/IκBα/NF-κB axis by increasing miR-216a, thus alleviating oxidative stress and neuroinflammation in VD rats.
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Affiliation(s)
- Xudong Qian
- Department of Neurology, Affiliated Hospital of Chengde Medical University, Chengde, 067000, Hebei, People's Republic of China
| | - Qianqian Xu
- Department of Neurology, Affiliated Hospital of Chengde Medical University, Chengde, 067000, Hebei, People's Republic of China
| | - Guoyun Li
- Department of Respiratory, Affiliated Hospital of Chengde Medical University, Chengde, 067000, Hebei, People's Republic of China
| | - Yi Bu
- Department of Neurology, Affiliated Hospital of Chengde Medical University, Chengde, 067000, Hebei, People's Republic of China
| | - Fan Sun
- Department of Neurology, Affiliated Hospital of Chengde Medical University, Chengde, 067000, Hebei, People's Republic of China
| | - Jian Zhang
- Department of Neurology, Affiliated Hospital of Chengde Medical University, Chengde, 067000, Hebei, People's Republic of China
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Ebrahimi SO, Reiisi S, Shareef S. miRNAs, oxidative stress, and cancer: A comprehensive and updated review. J Cell Physiol 2020; 235:8812-8825. [PMID: 32394436 DOI: 10.1002/jcp.29724] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Accepted: 04/07/2020] [Indexed: 01/17/2023]
Abstract
Oxidative stress refers to elevated levels of intracellular reactive oxygen species (ROS). ROS homeostasis functions as a signaling pathway for normal cell survival and appropriate cell signaling. Chronic inflammation induced by imbalanced levels of ROS contributes to many diseases and different types of cancer. ROS can alter the expression of oncogenes and tumor suppressor genes through epigenetic modifications, transcription factors, and non-coding RNAs. MicroRNAs (miRNAs) are small non-coding RNAs that play a key role in most biological pathways. Each miRNA regulates hundreds of target genes by inhibiting protein translation and/or promoting messenger RNA degradation. In normal conditions, miRNAs play a physiological role in cell proliferation, differentiation, and apoptosis. However, different factors that can dysregulate cell signaling and cellular homeostasis can also affect miRNA expression. The alteration of miRNA expression can work against disturbing factors or mediate their effects. Oxidative stress is one of these factors. Considering the complex interplay between ROS level and miRNA regulation and both of these with cancer development, we review the role of miRNAs in cancer, focusing on their function in oxidative stress.
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Affiliation(s)
- Seyed Omar Ebrahimi
- Department of Genetics, Faculty of Basic Sciences, Shahrekord University, Shahrekord, Iran
| | - Somayeh Reiisi
- Department of Genetics, Faculty of Basic Sciences, Shahrekord University, Shahrekord, Iran
| | - Salar Shareef
- Department of Medical Laboratory Science, College of Sciences, University of Raparin, Ranya, Kurdistan Region, Iraq
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15
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Xu H, Jia Z, Ma K, Zhang J, Dai C, Yao Z, Deng W, Su J, Wang R, Chen X. Protective effect of BMSCs-derived exosomes mediated by BDNF on TBI via miR-216a-5p. Med Sci Monit 2020; 26:e920855. [PMID: 32150531 PMCID: PMC7081927 DOI: 10.12659/msm.920855] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Background Transplantation of exosomes derived from mesenchymal stem cells (MSCs-Exo) can improve the recovery of neurological function in rats after traumatic brain injury (TBI). We tested a new hypothesis that brain-derived neurotrophic factor (BDNF)-induced MSCs-Exo can effectively promote functional recovery and neurogenesis in rats after TBI. Material/Methods BM-MSCs of rats were extracted by whole bone marrow culture, BDNF was added to BM-MSCs as an intervention, supernatant was collected, and exosomes were separated and purified by ultracentrifugation. Exosomes were identified by Western blot (WB), transmission electron microscopy (TEM), and particle size analysis and were subsequently used in cell and animal experiments. The experimental animals were divided into a sham group, a PBS group, an MSCs-Exo group, and a BDNF-induced MSCs-Exo group (n=12). An electric cortical contusion impactor (eCCI) was used to cause TBI in all rats except the sham group. We investigated the recovery of sensorimotor function and spatial learning ability, inflammation inhibition, and neuron regeneration in rats after TBI. Results Compared with the MSCs-Exo group, the BDNF-induced MSCs-Exo group showed better effects in promoting the recovery of sensorimotor function and spatial learning ability. BDNF-induced MSCs-Exo successfully inhibited inflammation and promoted neuronal regeneration in vivo and in vitro. We further analyzed miRNAs in BDNF-induced MSCs-Exo and MSCs-Exo and found that the expression of miR-216a-5p in BDNF-induced MSCs-Exo was significantly higher than that in MSCs-Exo as determined by qRT-PCR. Rescue experiments indicated that miR-216a-5p had a similar function as BDNF-induced MSCs-Exo. Conclusions We found that BDNF-induced MSCs-Exo can improve cell migration and inhibit apoptosis better than MSCs-Exo in rats after TBI, and the mechanism may be related to the high expression of miR-216a-5p.
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Affiliation(s)
- Huiyou Xu
- Department of Neurosurgery, Characteristic Medical Center of Chinese People's Armed Police Force; Institution of Brain Trauma and Neurology Disease of People's Armed Police Forces; Tianjin Key Laboratory of Neurotrauma Repair, Tianjin, China (mainland).,Logistics University of Chinese People's Armed Police Force, Tianjin, China (mainland)
| | - Zhilong Jia
- Department of Neurosurgery, Characteristic Medical Center of Chinese People's Armed Police Force; Institution of Brain Trauma and Neurology Disease of People's Armed Police Forces; Tianjin Key Laboratory of Neurotrauma Repair, Tianjin, China (mainland)
| | - Ke Ma
- Department of Neurosurgery, Characteristic Medical Center of Chinese People's Armed Police Force; Institution of Brain Trauma and Neurology Disease of People's Armed Police Forces; Tianjin Key Laboratory of Neurotrauma Repair, Tianjin, China (mainland).,Logistics University of Chinese People's Armed Police Force, Tianjin, China (mainland)
| | - Jian Zhang
- Department of Neurosurgery, Characteristic Medical Center of Chinese People's Armed Police Force; Institution of Brain Trauma and Neurology Disease of People's Armed Police Forces; Tianjin Key Laboratory of Neurotrauma Repair, Tianjin, China (mainland).,Logistics University of Chinese People's Armed Police Force, Tianjin, China (mainland)
| | - Chen Dai
- Department of Neurosurgery, Characteristic Medical Center of Chinese People's Armed Police Force; Institution of Brain Trauma and Neurology Disease of People's Armed Police Forces; Tianjin Key Laboratory of Neurotrauma Repair, Tianjin, China (mainland).,Logistics University of Chinese People's Armed Police Force, Tianjin, China (mainland)
| | - Zitong Yao
- Department of Neurosurgery, Characteristic Medical Center of Chinese People's Armed Police Force; Institution of Brain Trauma and Neurology Disease of People's Armed Police Forces; Tianjin Key Laboratory of Neurotrauma Repair, Tianjin, China (mainland).,Logistics University of Chinese People's Armed Police Force, Tianjin, China (mainland)
| | - Wusheng Deng
- Department of Neurosurgery, Characteristic Medical Center of Chinese People's Armed Police Force; Institution of Brain Trauma and Neurology Disease of People's Armed Police Forces; Tianjin Key Laboratory of Neurotrauma Repair, Tianjin, China (mainland).,Logistics University of Chinese People's Armed Police Force, Tianjin, China (mainland)
| | - Jianzhong Su
- Department of Neurosurgery, Characteristic Medical Center of Chinese People's Armed Police Force; Institution of Brain Trauma and Neurology Disease of People's Armed Police Forces; Tianjin Key Laboratory of Neurotrauma Repair, Tianjin, China (mainland)
| | - Renjie Wang
- Department of Neurosurgery, Characteristic Medical Center of Chinese People's Armed Police Force; Institution of Brain Trauma and Neurology Disease of People's Armed Police Forces; Tianjin Key Laboratory of Neurotrauma Repair, Tianjin, China (mainland)
| | - Xuyi Chen
- Department of Neurosurgery, Characteristic Medical Center of Chinese People's Armed Police Force; Institution of Brain Trauma and Neurology Disease of People's Armed Police Forces; Tianjin Key Laboratory of Neurotrauma Repair, Tianjin, China (mainland)
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16
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Kong F, Sun Y, Song W, Zhou Y, Zhu S. MiR-216a alleviates LPS-induced acute lung injury via regulating JAK2/STAT3 and NF-κB signaling. Hum Cell 2019; 33:67-78. [PMID: 31784954 DOI: 10.1007/s13577-019-00289-7] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Accepted: 09/30/2019] [Indexed: 01/12/2023]
Abstract
MicroRNAs (miRNAs) play an important role in the progression of acute lung injury (ALI) and acute respiratory distress syndrome (ARDS). Till now, little is known about the role of miR-216a in ALI/ARDS. In this study, patients with ARDS exhibited significantly higher interleukin-1β (IL-1β), interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α) levels than healthy controls (P < 0.01). However, miR-216a expression in patients with ARDS was significantly lower than healthy controls (P < 0.05), and negatively correlated with 28-day survival rate. Similar effects were observed in LPS-treated mice and A549 cells. MiR-216a over-expression reduced LPS-induced IL-1β, IL-6 and TNF-α levels, and ameliorated lung permeability, and prolonged overall survival of ALI mice. Further, miR-216a over-expression inhibited LPS-induced apoptosis and autophagy. In addition, the janus kinase-2 (JAK2) was a direct target of miR-216a. Silencing of JAK2 partially aggravated miR-216a-inhibited inflammation injury. Besides, miR-216a obviously decreased the expressions of phosphorylated signal transducer and the activator of transcription 3 (p-STAT3), p-p56, and p-IκBα. In conclusion, miR-216a alleviates LPS-induced inflammatory injury via regulating JAK2/STAT3 and NF-κB signaling.
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Affiliation(s)
- Fanpo Kong
- Department of Intensive Care Unit, Tengzhou Central People's Hospital, Tengzhou, 277500, Shandong, People's Republic of China
| | - Yanqi Sun
- Department of Intensive Care Unit, Tengzhou Central People's Hospital, Tengzhou, 277500, Shandong, People's Republic of China
| | - Wenke Song
- Department of Intensive Care Unit, Tengzhou Central People's Hospital, Tengzhou, 277500, Shandong, People's Republic of China
| | - Yongqin Zhou
- Department of Intensive Care Unit, Tengzhou Central People's Hospital, Tengzhou, 277500, Shandong, People's Republic of China
| | - Siliang Zhu
- Department of Intensive Care Unit, Tengzhou Central People's Hospital, Tengzhou, 277500, Shandong, People's Republic of China.
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Ginsenoside Rg1 defenses PC-12 cells against hydrogen peroxide-caused damage via up-regulation of miR-216a-5p. Life Sci 2019; 236:116948. [DOI: 10.1016/j.lfs.2019.116948] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 09/30/2019] [Accepted: 10/08/2019] [Indexed: 12/14/2022]
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MiR-216a-5p-containing exosomes suppress rTp17-induced inflammatory response by targeting TLR4. Biosci Rep 2019; 39:BSR20190686. [PMID: 31358689 PMCID: PMC6684949 DOI: 10.1042/bsr20190686] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 07/15/2019] [Accepted: 07/26/2019] [Indexed: 12/15/2022] Open
Abstract
Syphilis caused by Treponema pallidum (T. pallidum) infection is accompanied by inflammatory injury of tissue, and has a worldwide distribution and increasing incidence over the past decade. Tp17 has been reported to be a strong membrane immunogen, and was initially observed to play a role in inflammation during syphilis, reacting intensely with human syphilitic sera. We therefore used recombinant Tp17 (rTp17) as a stimulator in our study. Increasing evidence has demonstrated that microRNA (miRNA)-containing exosomes have emerged as a potential effective therapeutic target for many diseases. However, the biological functions and molecular mechanisms of miR-216a-5p in syphilis pathogenesis remain unknown. Our study first identified dramatically decreased miR-216a-5p in plasma of syphilis patients compared with the healthy control, which was negatively correlated with the expression of inflammatory cytokines, including IL-1β, IL-6, and TNF-α. Moreover, endothelial cells treated with miR-216a-5p-containing exosomes significantly attenuated the rTp17-induced inflammatory response. More importantly, we identified that miR-216a-5p could bind to the 3′-untranslated region (UTR) of Toll-like receptor (TLR) 4 (TLR4), and overexpression of TLR4 largely rescued the miR-216a-5p-mediated suppression of rTp17-induced inflammatory cytokine production and the TLR4-MYD88 signaling pathway. Thus, our results reveal a novel role of miR-216a-5p-containing exosomes in endothelial cells, implying a potential therapeutic target for inflammation in syphilis patients.
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