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Qiu N, Xu X, He Y. LncRNA TUG1 alleviates sepsis-induced acute lung injury by targeting miR-34b-5p/GAB1. BMC Pulm Med 2020; 20:49. [PMID: 32087725 PMCID: PMC7036216 DOI: 10.1186/s12890-020-1084-3] [Citation(s) in RCA: 101] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2019] [Accepted: 02/11/2020] [Indexed: 02/07/2023] Open
Abstract
Background Sepsis-induced acute lung injury (ALI) is a clinical syndrome characterized by the injury of alveolar epithelium and pulmonary endothelial cells. This study aimed to investigate the regulation of long noncoding RNA (lncRNA) taurine up-regulated gene 1 (TUG1) in a murine ALI model and in primary murine pulmonary microvascular endothelial cells (PMVECs) stimulated with lipopolysaccharide (LPS). Methods Adult C57BL/6 mice were intravenously injected with or without TUG1-expressiong adenoviral vector or control vector 1 week before the establishment of ALI model. PMVECs were transfected with TUG1-expressiong or control vectors followed by LPS stimulation. MiR-34b-5p was confirmed as a target of TUG1 using dual-luciferase reporter assay. GRB2 associated binding protein 1 (GAB1) was confirmed as a downstream target of miR-34b-5p using the same method. In the rescue experiment, PMVECs were co-transfected with TUG1-expressing vector and miR-34b-5p mimics (or control mimics) 24 h before LPS treatment. Results ALI mice showed reduced levels of TUG1, pulmonary injury, and induced apoptosis and inflammation compared to the control group. The overexpression of TUG1 in ALI mice ameliorated sepsis-induced pulmonary injury, apoptosis and inflammation. TUG1 also showed protective effect in LPS-treated PMVECs. The expression of MiR-34b-5p was negatively correlated with the level of TUG1. TUG1-supressed apoptosis and inflammation in LPS-stimulated PMVECs were restored by miR-34b-5p overexpression. GAB1 was inversely regulated by miR-34b-5p but was positively correlated with TUG1 expression. Conclusion TUG1 alleviated sepsis-induced inflammation and apoptosis via targeting miR-34b-5p and GAB1. These findings suggested that TUG1 might be served as a therapeutic potential for the treatment of sepsis-induced ALI.
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Affiliation(s)
- Nan Qiu
- Department of Emergency Internal Medicine, Guizhou Provincial People's Hospital, Guiyang City, No. 1 Baoshan South Road, Guiyang City, Guizhou Province, China.
| | - Xinmei Xu
- Department of Emergency Internal Medicine, Guizhou Provincial People's Hospital, Guiyang City, No. 1 Baoshan South Road, Guiyang City, Guizhou Province, China
| | - Yingying He
- Department of Emergency Internal Medicine, Guizhou Provincial People's Hospital, Guiyang City, No. 1 Baoshan South Road, Guiyang City, Guizhou Province, China
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102
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Dong L, Chen F, Fan Y, Long J. MiR-34b-5p inhibits cell proliferation, migration and invasion through targeting ARHGAP1 in breast cancer. Am J Transl Res 2020; 12:269-280. [PMID: 32051752 PMCID: PMC7013215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 01/03/2020] [Indexed: 06/10/2023]
Abstract
This study aim at investigating the function of microRNA (miR)-34b-5p in breast cancer prognosis and development. qRT-PCR was used for miR-34b-5p expression examination in breast cancer samples. CCK8, immunohistochemistry, scratch wound healing, transwell assays were performed for cell experiments. Subcutaneously implanted tumor model was carried out for animal experiment. Western blot was conducted for protein expression detection. Bioinformatics analysis was performed for exploring the underlying mechanism. MiR-34b-5p expression was down-regulated in breast cancer samples and cells, and miR-34d-5p could inhibit cell viability, migration and invasion also delay tumor growth in vivo. Low miR-34b-5p expression showed a bad prognosis of breast cancer patients. MiR-34b-5p functioned as a tumor suppressor by targeting ARHGAP1, and ARHGAP1 knockdown could reverse the effect of miR-34b-5p inhibitor on breast cancer cells. MiR-34b-5p exerts an anti-tumorigenesis role in breast cancer cells by targeting ARHGAP1, which is profitable for the breast cancer diagnosis and molecular treatment.
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Affiliation(s)
- Lifeng Dong
- Department of Breast, Women's Hospital, Zhejiang University School of Medicine Hangzhou, Zhejiang, China
| | - Fangfang Chen
- Department of Breast, Women's Hospital, Zhejiang University School of Medicine Hangzhou, Zhejiang, China
| | - Yangfan Fan
- Department of Breast, Women's Hospital, Zhejiang University School of Medicine Hangzhou, Zhejiang, China
| | - Jingpei Long
- Department of Breast, Women's Hospital, Zhejiang University School of Medicine Hangzhou, Zhejiang, China
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Chen X, Hu J, Pan Y, Tang Z. Novel noncoding RNAs biomarkers in acute respiratory distress syndrome. Expert Rev Respir Med 2020; 14:299-306. [PMID: 31903804 DOI: 10.1080/17476348.2020.1711736] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Introduction: Acute respiratory distress syndrome (ARDS) is a very common condition associated with critically ill patients, which causes substantial morbidity and mortality. Currently, there is no effective clinical ARDS treatment strategy. Novel targets that effectively treat ARDS need to be found.Areas covered: Data sources were published articles through June 2019 in PubMed using the following keywords: 'acute respiratory distress syndrome,' 'miRNAs,' 'lncRNAs,' and 'biomarkers.' The selection of studies focused on in cellular model, animal model, and clinical studies of ARDS.Expert commentary: Accumulated evidence revealed that some specific miRNAs and lncRNAs could regulate the signaling pathways of the pathophysiology by targeting specific molecule in ARDS. The differentially expressed miRNAs exert a crucial role in apoptosis of neutrophil, antigen-presenting cells and lung epithelial cell, and the dysfunction of mitochondrial. Recently, the influence of lncRNAs upon miRNA function is also rapidly emerging. In some cases, lncRNA MALAT1 target TLR4 to mediate the p38 MAPK and NF-κB signaling pathway in ARDS rat model. In other cases, lncRNA CASC2 was found to act as a ceRNA of miR-144-3p which directly targeted AQP1 in LPS-induced A549 cell. In addition, other miRNA-lncRNA regulatory patterns in ARDS and novel biomarkers still require deeper research.
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Affiliation(s)
- Xianfeng Chen
- Department of Intensive Care Unit, The First Affiliated Hospital of Guangxi Medical University, Nanning, PR China
| | - Juntao Hu
- Department of Intensive Care Unit, The First Affiliated Hospital of Guangxi Medical University, Nanning, PR China
| | - Yiping Pan
- Department of Intensive Care Unit, The First Affiliated Hospital of Guangxi Medical University, Nanning, PR China
| | - Zhanhong Tang
- Department of Intensive Care Unit, The First Affiliated Hospital of Guangxi Medical University, Nanning, PR China
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Tian G, Jin X, Wang Q, Ye T, Li G, Liu J. Recent advances in the study of progranulin and its role in sepsis. Int Immunopharmacol 2019; 79:106090. [PMID: 31869774 DOI: 10.1016/j.intimp.2019.106090] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 11/25/2019] [Accepted: 11/28/2019] [Indexed: 12/29/2022]
Abstract
Sepsis is defined as life-threatening organ dysfunction caused by a dysregulated host response to infection. The mortality rate of in-hospital patients whose conditions are complicated by sepsis remains high in spite of intensive-care treatment, therefore placing a significant financial burden on the health care system. In recent years, progranulin (PGRN), a cysteine-rich secretory protein (CRISP), has been found to play a crucial role in sepsis. PGRN participates in the pathogenesis of sepsis via diverse pathways, including bacterial clearance, cell growth and survival, tissue repair, and the regulation of inflammation. PGRN knockout mice suffer from serious infectious processes, whereas therapeutic administration of recombinant PGRN to such mice enhances bacterial clearance and reduces organ injury and mortality rate. Even though PGRN plays an important role in regulating sepsis, its potential mechanisms have not been completely clarified. In this review, we summarize the most recent research advances in the study of PGRN and its role in sepsis.
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Affiliation(s)
- Gang Tian
- Department of Laboratory Medicine, Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
| | - Xinrui Jin
- Department of Laboratory Medicine, Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
| | - Qin Wang
- Sichuan Provincial Center for Gynaecology and Breast Diseases (Affiliated Hospital of Southwest Medical University), Luzhou, Sichuan 646000, China
| | - Ting Ye
- Department of Laboratory Medicine, Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
| | - Guangrong Li
- Department of Laboratory Medicine, Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
| | - Jinbo Liu
- Department of Laboratory Medicine, Affiliated Hospital of Southwest Medical University, Luzhou 646000, China.
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105
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Zhu Q, Zhang W, Mu D, Zhou H, Wu S, Zou H. Effects of genistein on lipopolysaccharide-induced injury of mouse alveolar epithelial cells and its mechanism. Biosci Biotechnol Biochem 2019; 84:544-551. [PMID: 31791192 DOI: 10.1080/09168451.2019.1697197] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Alveolar and bronchial epithelial cells have critical functions in acute respiratory distress syndrome progress. Genistein could protect the lungs from acute lung injury, however, whether genistein protects the alveolar epithelial cells from LPS-induced injury was less studied. Spectrophotometric method 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide (MTT) and enzyme-linked immunosorbent assay (ELISA) were performed to detect cell viability and levels of tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), and IL-6. Flow cytometry and western blot assay were performed to detect cells apoptosis and protein levels. In LPS-induced model of mouse lung epithelial (MLE)-12 cells, PBEF (proinflammatory cytokine) expression, and cell apoptosis were increased and cell viability was decreased, whereas NF-κB was activated and expression levels of TNF-α, IL-1β, and IL-6 were increased. However, genistein partly reversed the effect of LPS, and it plays a protective role in lung injury by reducing expression of PBEF, inhibiting the activation of NF-κB and alleviating inflammatory response of cells.
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Affiliation(s)
- Qi Zhu
- Department of Respiratory, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang Province, China
| | - Wei Zhang
- Department of Rehabilitation Medicine, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang Province, China
| | - Deguang Mu
- Department of Respiratory, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang Province, China
| | - Hongbin Zhou
- Department of Respiratory, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang Province, China
| | - Shengchang Wu
- Department of Respiratory, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang Province, China
| | - Hai Zou
- Department of Cardiology, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang Province, China
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106
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Hoefel G, Tay H, Foster P. MicroRNAs in Lung Diseases. Chest 2019; 156:991-1000. [DOI: 10.1016/j.chest.2019.06.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 06/03/2019] [Accepted: 06/17/2019] [Indexed: 12/31/2022] Open
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Lv N, Li C, Liu X, Qi C, Wang Z. miR-34b Alleviates High Glucose-Induced Inflammation and Apoptosis in Human HK-2 Cells via IL-6R/JAK2/STAT3 Signaling Pathway. Med Sci Monit 2019; 25:8142-8151. [PMID: 31665127 PMCID: PMC6842269 DOI: 10.12659/msm.917128] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Background It is well established that inflammation and apoptosis of renal tubular epithelial cells caused by hyperglycemia contribute to the development of diabetic nephropathy (DN). Although microRNAs (miRNAs) are known to have roles in inflammation-related disorders, the exact role of miR-34b in DN has not been defined, and the regulatory mechanism has been unclear. This study aimed to clarify the role of miR-34b in DN pathogenesis. Material/Methods Expression of miR-34b, IL-6R, and other key factors of inflammation, apoptosis (TNF-α, IL-1β, IL-6, caspase-3) in high glucose (HG)-induced HK-2 cells were measured by real-time PCR, Western blot, and flow cytometric cell apoptosis assays. We used luciferase reporter assay to detect the target of miR-34b. Moreover, the targeting gene of miR-34b and its downstream JAK2/STAT3 signaling pathway were explored. Results It was demonstrated that miR-34b overexpression inhibited apoptosis and expression levels of TNF-α, IL-1β, IL-6, and caspase-3 in HG-treated HK-2 cells. We also found that IL-6R is a direct target of miR-34b, which could rescue inflammation and apoptosis in HG-treated HK-2 cells transfected with miR-34b mimic. Furthermore, we showed that overexpression of miR-34b inhibited the IL-6R/JAK2/STAT3 signaling pathway in HG-treated HK-2 cells. Conclusions Our data suggest that overexpression of miR-34b improves inflammation and ameliorates apoptosis in HG-induced HK-2 cells via the IL-6R/JAK2/STAT3 pathway, indicating that miR-34b could be a promising therapeutic target in DN.
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Affiliation(s)
- Na Lv
- Department of Endocrinology, Dongying People's Hospital, Dongying, Shangdong, China (mainland)
| | - Chunqing Li
- Department of Endocrinology, Dongying People's Hospital, Dongying, Shangdong, China (mainland)
| | - Xin Liu
- Department of Endocrinology, Dongying People's Hospital, Dongying, Shangdong, China (mainland)
| | - Caihui Qi
- Department of Endocrinology, Dongying People's Hospital, Dongying, Shangdong, China (mainland)
| | - Zhenqing Wang
- Department of Endocrinology, Dongying People's Hospital, Dongying, Shangdong, China (mainland)
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Ye S, Yang X, Wang Q, Chen Q, Ma Y. Penehyclidine Hydrochloride Alleviates Lipopolysaccharide-Induced Acute Lung Injury by Ameliorating Apoptosis and Endoplasmic Reticulum Stress. J Surg Res 2019; 245:344-353. [PMID: 31425874 DOI: 10.1016/j.jss.2019.07.080] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Revised: 06/16/2019] [Accepted: 07/19/2019] [Indexed: 12/13/2022]
Abstract
BACKGROUND Penehyclidine hydrochloride (PHC), a novel anticholinergic reagent, has been shown to exert anti-endoplasmic reticulum stress (ERS), antioxidant, and antiinflammation functions in various rat models. However, the definite pathogenesis of lung defensive roles of PHC remains unclear. This study measured the functions of PHC on lipopolysaccharide (LPS)-induced acute lung injury (ALI) in rats. METHODS In this research, the LPS-induced ALI model was assessed through the branchial injection of LPS for 24 h. Male Sprague-Dawley rats were randomly allocated into 5 groups: sham, LPS, LPS + PHC (0.5 mg/kg), LPS + PHC (1 mg/kg), and LPS + PHC (2.5 mg/kg). The concentrations of superoxide dismutase, malondialdehyde, myeloperoxidase, and glutathione peroxidase were measured by enzyme-linked immunosorbent assay and immunohistochemistry analysis. Western blotting, real-time PCR, and immunofluorescence analysis were used to determine the ERS-associated protein levels and mRNA expression. The protein levels of Bax, Bcl-2, caspase-3, and caspase-9 were used to measure lung tissue apoptosis. RESULTS The results revealed that PHC administration inhibited LPS-induced ALI as indicated by the loss in the ratio of injury production evaluated through hematoxylin-eosin staining, in particular the lung sample sections, compared with the LPS group. PHC administration inhibited LPS-induced lung myeloperoxidase and serum concentrations of malondialdehyde, superoxide dismutase, and glutathione peroxidase in rats. PHC administration repressed the LPS-activated ERS-correlated pathway and apoptosis-associated protein levels in rats. CONCLUSIONS In summary, our findings indicated that PHC has a defensive effect on LPS-induced ALI by inhibiting oxidative stress, attenuating PERK and ATF6 signals, and suppressing ERS-mediated apoptosis.
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Affiliation(s)
- Shaobing Ye
- Department of Anesthesiology, The Third Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Xue Yang
- Department of Anesthesiology, The Third Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Qiansong Wang
- Department of Anesthesiology, The Third Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Qiang Chen
- Department of Anesthesiology, The Third Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yongda Ma
- Department of Anesthesiology, The Third Affiliated Hospital of Chongqing Medical University, Chongqing, China.
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Murdaca G, Tonacci A, Negrini S, Greco M, Borro M, Puppo F, Gangemi S. Effects of AntagomiRs on Different Lung Diseases in Human, Cellular, and Animal Models. Int J Mol Sci 2019; 20:ijms20163938. [PMID: 31412612 PMCID: PMC6719072 DOI: 10.3390/ijms20163938] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Revised: 07/14/2019] [Accepted: 07/30/2019] [Indexed: 12/22/2022] Open
Abstract
INTRODUCTION MiRNAs have been shown to play a crucial role among lung cancer, pulmonary fibrosis, tuberculosis (TBC) infection, and bronchial hypersensitivity, thus including chronic obstructive pulmonary disease (COPD) and asthma. The oncogenic effect of several miRNAs has been recently ruled out. In order to act on miRNAs turnover, antagomiRs have been developed. MATERIALS AND METHODS The systematic review was conducted under the PRISMA guidelines (registration number is: CRD42019134173). The PubMed database was searched between 1 January 2000 and 30 April 2019 under the following search strategy: (((antagomiR) OR (mirna antagonists) OR (mirna antagonist)) AND ((lung[MeSH Terms]) OR ("lung diseases"[MeSH Terms]))). We included original articles, published in English, whereas exclusion criteria included reviews, meta-analyses, single case reports, and studies published in a language other than English. RESULTS AND CONCLUSIONS A total of 68 articles matching the inclusion criteria were retrieved. Overall, the use of antagomiR was seen to be efficient in downregulating the specific miRNA they are conceived for. The usefulness of antagomiRs was demonstrated in humans, animal models, and cell lines. To our best knowledge, this is the first article to encompass evidence regarding miRNAs and their respective antagomiRs in the lung, in order to provide readers a comprehensive review upon major lung disorders.
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Affiliation(s)
- Giuseppe Murdaca
- Clinical Immunology Unit, Department of Internal Medicine, University of Genoa and Ospedale Policlinico San Martino, 16132 Genoa, Italy.
| | - Alessandro Tonacci
- Clinical Physiology Institute, National Research Council of Italy (IFC-CNR), 56124 Pisa, Italy
| | - Simone Negrini
- Clinical Immunology Unit, Department of Internal Medicine, University of Genoa and Ospedale Policlinico San Martino, 16132 Genoa, Italy
| | - Monica Greco
- Clinical Immunology Unit, Department of Internal Medicine, University of Genoa and Ospedale Policlinico San Martino, 16132 Genoa, Italy
| | - Matteo Borro
- Clinical Immunology Unit, Department of Internal Medicine, University of Genoa and Ospedale Policlinico San Martino, 16132 Genoa, Italy
| | - Francesco Puppo
- Clinical Immunology Unit, Department of Internal Medicine, University of Genoa and Ospedale Policlinico San Martino, 16132 Genoa, Italy
| | - Sebastiano Gangemi
- School and Operative Unit of Allergy and Clinical Immunology, Department of Clinical and Experimental Medicine, University of Messina, 98125 Messina, Italy
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Gray ME, Meehan J, Blair EO, Ward C, Langdon SP, Morrison LR, Marland JRK, Tsiamis A, Kunkler IH, Murray A, Argyle D. Biocompatibility of common implantable sensor materials in a tumor xenograft model. J Biomed Mater Res B Appl Biomater 2019; 107:1620-1633. [PMID: 30367816 PMCID: PMC6767110 DOI: 10.1002/jbm.b.34254] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 08/30/2018] [Accepted: 09/09/2018] [Indexed: 12/22/2022]
Abstract
Real-time monitoring of tumor microenvironment parameters using an implanted biosensor could provide valuable information on the dynamic nature of a tumor's biology and its response to treatment. However, following implantation biosensors may lose functionality due to biofouling caused by the foreign body response (FBR). This study developed a novel tumor xenograft model to evaluate the potential of six biomaterials (silicon dioxide, silicon nitride, Parylene-C, Nafion, biocompatible EPOTEK epoxy resin, and platinum) to trigger a FBR when implanted into a solid tumor. Biomaterials were chosen based on their use in the construction of a novel biosensor, designed to measure spatial and temporal changes in intra-tumoral O2 , and pH. None of the biomaterials had any detrimental effect on tumor growth or body weight of the murine host. Immunohistochemistry showed no significant changes in tumor necrosis, hypoxic cell number, proliferation, apoptosis, immune cell infiltration, or collagen deposition. The absence of biofouling supports the use of these materials in biosensors; future investigations in preclinical cancer models are required, with a view to eventual applications in humans. To our knowledge this is the first documented investigation of the effects of modern biomaterials, used in the production of implantable sensors, on tumor tissue after implantation. © 2018 The Authors. Journal of Biomedical Materials Research Part B: Applied Biomaterials published by Wiley Periodicals, Inc. J Biomed Mater Res Part B, 2018. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater 107B: 1620-1633, 2019.
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Affiliation(s)
- Mark E. Gray
- The Royal (Dick) School of Veterinary Studies and Roslin InstituteUniversity of EdinburghEdinburghEH25 9RGUK
- Cancer Research UK Edinburgh Centre and Division of Pathology Laboratories, Institute of Genetics and Molecular MedicineUniversity of EdinburghEdinburghEH4 2XUUK
| | - James Meehan
- Cancer Research UK Edinburgh Centre and Division of Pathology Laboratories, Institute of Genetics and Molecular MedicineUniversity of EdinburghEdinburghEH4 2XUUK
- Institute of Sensors, Signals and Systems, School of Engineering and Physical SciencesHeriot‐Watt UniversityEdinburghEH14 4ASUK
| | - Ewen O. Blair
- School of Engineering, Faraday BuildingEdinburghEH9 3JLUK
| | - Carol Ward
- The Royal (Dick) School of Veterinary Studies and Roslin InstituteUniversity of EdinburghEdinburghEH25 9RGUK
- Cancer Research UK Edinburgh Centre and Division of Pathology Laboratories, Institute of Genetics and Molecular MedicineUniversity of EdinburghEdinburghEH4 2XUUK
| | - Simon P. Langdon
- Cancer Research UK Edinburgh Centre and Division of Pathology Laboratories, Institute of Genetics and Molecular MedicineUniversity of EdinburghEdinburghEH4 2XUUK
| | - Linda R. Morrison
- The Royal (Dick) School of Veterinary Studies and Roslin InstituteUniversity of EdinburghEdinburghEH25 9RGUK
| | | | | | - Ian H. Kunkler
- Cancer Research UK Edinburgh Centre and Division of Pathology Laboratories, Institute of Genetics and Molecular MedicineUniversity of EdinburghEdinburghEH4 2XUUK
| | - Alan Murray
- School of Engineering, Faraday BuildingEdinburghEH9 3JLUK
| | - David Argyle
- The Royal (Dick) School of Veterinary Studies and Roslin InstituteUniversity of EdinburghEdinburghEH25 9RGUK
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Chikusetsusaponin V attenuates lipopolysaccharide-induced acute lung injury in mice by modulation of the NF-κB and LXRα. Int Immunopharmacol 2019; 70:174-179. [DOI: 10.1016/j.intimp.2019.02.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Revised: 01/10/2019] [Accepted: 02/13/2019] [Indexed: 12/14/2022]
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112
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The protective effect of oleanolic acid on NMDA-induced MLE-12 cells apoptosis and lung injury in mice by activating SIRT1 and reducing NF-κB acetylation. Int Immunopharmacol 2019; 70:520-529. [DOI: 10.1016/j.intimp.2019.03.018] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 03/04/2019] [Accepted: 03/06/2019] [Indexed: 12/12/2022]
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113
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Nie Y, Wang Z, Chai G, Xiong Y, Li B, Zhang H, Xin R, Qian X, Tang Z, Wu J, Zhao P. Dehydrocostus Lactone Suppresses LPS-induced Acute Lung Injury and Macrophage Activation through NF-κB Signaling Pathway Mediated by p38 MAPK and Akt. Molecules 2019; 24:molecules24081510. [PMID: 30999647 PMCID: PMC6514677 DOI: 10.3390/molecules24081510] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Revised: 04/15/2019] [Accepted: 04/15/2019] [Indexed: 01/10/2023] Open
Abstract
Acute lung injury (ALI) is a severe clinical disease marked by dysregulated inflammation response and has a high rate of morbidity and mortality. Macrophages, which play diverse roles in the inflammatory response, are becoming therapeutic targets in ALI. In this study we investigated the effects of dehydrocostus lactone (DHL), a natural sesquiterpene, on macrophage activation and LPS-induced ALI. The macrophage cell line RAW264.7 and primary lung macrophages were incubated with DHL (0, 3, 5, 10 and 30 μmol/L) for 0.5 h and then challenged with LPS (100 ng/mL) for up to 8 hours. C57BL/6 mice were intratracheally injected with LPS (5 mg/kg) to induce acute lung injury (ALI) and then treated with a range of DHL doses intraperitoneally (5 to 20 mg/kg). The results showed that DHL inhibited LPS-induced production of proinflammatory mediators such as iNOS, NO, and cytokines including TNF-α, IL-6, IL-1β, and IL-12 p35 by suppressing the activity of NF-κB via p38 MAPK/MK2 and Akt signaling pathway in macrophages. The in vivo results revealed that DHL significantly attenuated LPS-induced pathological injury and reduced cytokines expression in the lung. NF-κB, p38 MAPK/MK2 and Akt signaling molecules were also involved in the anti-inflammatory effect. Collectively, our findings suggested that DHL is a promising agent for alleviating LPS-induced ALI.
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Affiliation(s)
- Yunjuan Nie
- Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi 214122, Jiangsu, China.
| | - Zhongxuan Wang
- Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi 214122, Jiangsu, China.
| | - Gaoshang Chai
- Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi 214122, Jiangsu, China.
| | - Yue Xiong
- Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi 214122, Jiangsu, China.
| | - Boyu Li
- Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi 214122, Jiangsu, China.
| | - Hui Zhang
- Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi 214122, Jiangsu, China.
| | - Ruiting Xin
- Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi 214122, Jiangsu, China.
| | - Xiaohang Qian
- Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi 214122, Jiangsu, China.
| | - Zihan Tang
- Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi 214122, Jiangsu, China.
| | - Jiajun Wu
- Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi 214122, Jiangsu, China.
| | - Peng Zhao
- Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi 214122, Jiangsu, China.
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Zhang Z, Wang X, Ma C, Li Z, Chen H, Zhang Z, Li T. Genipin protects rats against lipopolysaccharide-induced acute lung injury by reinforcing autophagy. Int Immunopharmacol 2019; 72:21-30. [PMID: 30959368 DOI: 10.1016/j.intimp.2019.03.052] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2018] [Revised: 03/11/2019] [Accepted: 03/26/2019] [Indexed: 02/07/2023]
Abstract
Although the protective effects of genipin against acute lung injury (ALI) have been described previously, the associated mechanism remains unclear. We have previously reported that genipin exerts its pharmacological effects by regulating autophagy. Here, we hypothesized that the up-regulation of autophagy may contribute to the protective effects exhibited by genipin against ALI. In the present study, ALI was induced by intratracheal LPS administration in rats. Genipin treatment significantly reduced LPS-induced lung injury as evidenced by improved histopathology, decreased lung edema, total cells, and protein concentration in the bronchoalveolar lavage fluid (BALF). This protection was inhibited by 3-methyladenine (3-MA), an inhibitor of autophagy. Genipin treatment reduced the expression of P62 and increased the expression of Beclin-1 and LC3II, indicating increased autophagy. Genipin treatment also alleviated LPS-induced cell apoptosis (down-regulation of Bax, up-regulation of Bcl-2, and decreased number of terminal deoxynucleotidyl transferase dUTP nick end label-positive cells) and oxidative stress (increased SOD and decreased MDA content) in the lung. Furthermore, genipin attenuated LPS-induced production of TNF-α, IL-1β, and IL-6 in the lung and BALF. These protective effects induced by genipin were reversed by 3-MA treatment, indicating that autophagy was involved in the protective effects exerted by genipin against inflammation and apoptosis in ALI. In A549 cells incubated with LPS for 6 h, genipin treatment increased the number of GFP-LC3 punctae. 3-MA prevented the protective effects of genipin against mitochondrial dysfunction and cell death. These findings suggest that genipin protects against apoptosis and inflammation in LPS-induced ALI by promoting autophagy.
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Affiliation(s)
- Zhijie Zhang
- Department of Anesthesiology, Yidu Central Hospital of Weifang, Weifang, Shandong Province, China
| | - Xue Wang
- Department of Anesthesiology, Yidu Central Hospital of Weifang, Weifang, Shandong Province, China
| | - Chengzhou Ma
- Department of Anesthesiology, Dongcheng Street Hospital of Linqu, Weifang, Shandong Province, China
| | - Zhiwang Li
- Department of Anesthesiology, The First People's Hospital of Chenzhou/Institute of Translation Medicine, University of South China, Chenzhou 423000, China
| | - Huayong Chen
- Department of Anesthesiology, Yidu Central Hospital of Weifang, Weifang, Shandong Province, China
| | - Zhiming Zhang
- Department of Anesthesiology, The First People's Hospital of Chenzhou/Institute of Translation Medicine, University of South China, Chenzhou 423000, China.
| | - Tao Li
- Department of Critical Care Medicine, The First People's Hospital of Chenzhou/Institute of Translation Medicine, University of South China, Chenzhou 423000, China.
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Chen XX, Tang L, Han ZH, Wang WJ, Meng JG. Coculture with bone marrow‑derived mesenchymal stem cells attenuates inflammation and apoptosis in lipopolysaccharide‑stimulated alveolar epithelial cells via enhanced secretion of keratinocyte growth factor and angiopoietin‑1 modulating the Toll‑like receptor‑4 signal pathway. Mol Med Rep 2019; 19:1891-1902. [PMID: 30628710 DOI: 10.3892/mmr.2019.9836] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Accepted: 12/11/2018] [Indexed: 11/06/2022] Open
Abstract
Acute lung injury (ALI) is a common, costly and potentially lethal disease with characteristics of alveolar‑capillary membrane disruption, pulmonary edema and impaired gas exchange due to increased apoptosis and pulmonary inflammation. There is no effective and specific therapy for ALI; however, mesenchymal stem cells (MSCs) have been demonstrated to be a potential option. Lipopolysaccharide (LPS) is a highly proinflammatory molecule that is used to mimic an in vivo inflammatory and damaged state in vitro. The present study investigated the effect of bone marrow‑derived MSCs on an LPS‑induced alveolar epithelial cell (A549 cell line) injury and its underlying mechanisms by a Transwell system. It was identified that a high LPS concentration caused a decrease in cell viability, increases in apoptosis, inflammatory cytokine release and NF‑κB activity, disruption of the caspase‑3/Bcl‑2 ratio, upregulation of Toll‑like receptor 4 (TLR4), myeloid differentiation factor 88 (MyD88) and toll‑interleukin‑1 receptor domain‑containing adaptor inducing interferon (TRIF) expression, and facilitation of TLR4/MyD88 and TLR4/TRIF complex formation in A549 cells. Coculture with MSCs attenuated all of these activities induced by LPS in A549 cells. In addition, an increased level of keratinocyte growth factor (KGF) and angiopoietin‑1 (ANGPT1) secretion from MSCs was observed under inflammatory stimulation. KGF and/or ANGPT1 neutralizing antibodies diminished the beneficial effect of MSC conditioned medium. These data suggest that MSCs alleviate inflammatory damage and cellular apoptosis induced by LPS in A549 cells by modulating TLR4 signals. These changes may be partly associated with an increased secretion of KGF and ANGPT1 from MSCs under inflammatory conditions. These data provide the basis for development of MSC‑based therapies for ALI.
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Affiliation(s)
- Xu-Xin Chen
- Department of Respiratory Medicine, Navy General Hospital of The People's Liberation Army, Beijing 100037, P.R. China
| | - Lu Tang
- Department of Neurology, The First Hospital of Changsha, Changsha, Hunan 430100, P.R. China
| | - Zhi-Hai Han
- Department of Respiratory Medicine, Navy General Hospital of The People's Liberation Army, Beijing 100037, P.R. China
| | - Wen-Jing Wang
- Cardiothoracic Surgery Intensive Care Unit, Anqing Municipal Hospital, Anqing, Anhui 246003, P.R. China
| | - Ji-Guang Meng
- Department of Respiratory Medicine, Navy General Hospital of The People's Liberation Army, Beijing 100037, P.R. China
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116
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Park S, Lee SHS, Lee WI, Choi R, Kim SW, Woo HN, Lee H. MicroRNA expression profiling of adult hippocampal neural stem cells upon cell death reveals an autophagic cell death-like pattern. Biochem Biophys Res Commun 2019; 509:674-679. [PMID: 30612732 DOI: 10.1016/j.bbrc.2018.12.157] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 12/18/2018] [Accepted: 12/22/2018] [Indexed: 11/25/2022]
Abstract
Adult hippocampal neural (HCN) stem cells promptly undergo irreversible autophagic cell death (ACD) if deprived of insulin in culture. Small, non-coding microRNAs (miRNA) play an important role in regulating biological processes, including proliferation and cell death. However, there have been no reports thus far regarding miRNA involvement in the induction of adult HCN stem cell death under insulin-deprived conditions, for which we performed a microarray-based analysis to examine the expression signature of miRNAs in adult rat HCN stem cells. Three independent specimens per culture condition either with or without insulin were prepared and a miRNA microarray analysis carried out. A total of 12 exhibited significantly altered expression levels upon cell death due to the absence of insulin when compared to HCN stem cells cultured with insulin present (cut-off limit; p < 0.05 and fold-change >1.3) The resulting volcano plot showed that, among these miRNAs, seven were upregulated and five were downregulated. The upregulated miRNAs were capable of modulating HCN stem cell death. Caspase-3 activity analysis, LC3 conversion, and TEM of autophagosome formation consistently suggested that ACD, not apoptosis, was most likely the mechanism affecting HCN cell death. As such, we have come to term these miRNAs, "HCN stem cell-specific autophagic cell death regulators." Taken together, our data suggest that the miRNA expression profile of HCN stem cells is altered during ACD occurring due to insulin deprivation and that differentially expressed miRNAs are involved in HCN stem cell viability. Detailed explorations of the underlying mechanisms regarding HCN stem cell viability modulation by these miRNAs would be beneficial in further understanding the physiological features of adult HCN stem cells and are currently being investigated.
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Affiliation(s)
- Sujeong Park
- Department of Microbiology, University of Ulsan College of Medicine, Seoul, South Korea; Bio-Medical Institute of Technology, University of Ulsan College of Medicine, Seoul, South Korea
| | - Steven Hyun Seung Lee
- Department of Microbiology, University of Ulsan College of Medicine, Seoul, South Korea; Bio-Medical Institute of Technology, University of Ulsan College of Medicine, Seoul, South Korea
| | - Won Il Lee
- Department of Microbiology, University of Ulsan College of Medicine, Seoul, South Korea
| | - Rachelle Choi
- Department of Microbiology, University of Ulsan College of Medicine, Seoul, South Korea; Bio-Medical Institute of Technology, University of Ulsan College of Medicine, Seoul, South Korea
| | - Seong Who Kim
- Biochemistry & Molecular Biology, University of Ulsan College of Medicine, Seoul, South Korea; Stem Cell Immunomodulation Research Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Ha-Na Woo
- Department of Microbiology, University of Ulsan College of Medicine, Seoul, South Korea; Bio-Medical Institute of Technology, University of Ulsan College of Medicine, Seoul, South Korea.
| | - Heuiran Lee
- Department of Microbiology, University of Ulsan College of Medicine, Seoul, South Korea; Bio-Medical Institute of Technology, University of Ulsan College of Medicine, Seoul, South Korea.
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Abstract
Background Acute lung injury in children is a complicated disease linked to the inflammation response. MicroRNA (miRNA) plays a vital role in acute lung injury. However, the role of miR-30b-5p in the pathogenesis of acute lung injury is not clear. The purpose of our study was to investigate the alteration of miR-30b-5p, suppressor of cytokine signaling 3 (SOCS3), in children with acute lung injury, and also in a mouse model of acute lung injury induced by the endotoxin lipopolysaccharide (LPS). Material/Methods The levels of miR-30b-5p, SOCS3, FKN (fractalkine), tumor necrosis factor (TNF)-α, NF-κB (nuclear factor kappa-light-chain-enhancer of activated B), interleukin-6 (IL-6), and IL-8 were detected by ELISA (enzyme-linked immunosorbent assay), western blot, and qRT-PCR (quantitative reverse transcription polymerase chain reaction) assay. The alveolar permeability index and the ratio of wet weight/dry weight (W/D) were measured. Then, we examined the inflammation and apoptosis using hematoxylin and eosin (H&E) staining and TUNEL (terminal deoxynucleotidyl transferase dUTP nick end labeling) assay. Additionally, SOCS3 was investigated as a direct target of miR-30a-5p in RAW264.7 cells by dual-luciferase reporter assays. Results Our study indicated that the level of miR-30b-5p was decreased and the levels of SOCS3, FKN, TNF-α, NF-κB, IL-6, and IL-8 were increased in lung tissue, serum, and bronchoalveolar lavage fluid of mice with acute lung injury induced by LPS. In addition, LPS increased alveolar permeability index and the ratio of W/D and induced inflammatory responses, including the activation of the NF-κB pathway in a mouse model. Furthermore, SOCS3 was confirmed to be a target of miR-30a-5p in RAW264.7 cells. Conclusions Our data demonstrated an important role for miR-30b-5p in acute lung injury inflammation and suggested that miR-30b-5p might be an important therapy target in children with acute lung injury.
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Affiliation(s)
- Ting Zhou
- Department of Pediatrics, The Affiliated Huai'an Hospital of Xuzhou Medical University, Huai'an, Jiangsu, China (mainland)
| | - Yong-Li Chen
- Department of Pediatrics, Wuhan Fourth Hospital; Puai Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China (mainland)
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118
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Johnson TA, Singla DK. PTEN inhibitor VO-OHpic attenuates inflammatory M1 macrophages and cardiac remodeling in doxorubicin-induced cardiomyopathy. Am J Physiol Heart Circ Physiol 2018; 315:H1236-H1249. [PMID: 30095997 PMCID: PMC6297808 DOI: 10.1152/ajpheart.00121.2018] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 07/30/2018] [Accepted: 07/30/2018] [Indexed: 02/06/2023]
Abstract
Doxorubicin (Doxo) is an effective agent commonly used in cancer therapeutics. Unfortunately, Doxo treatment can stimulate cardiomyopathy and subsequent heart failure, limiting the use of this drug. The role of phosphatase and tensin homolog (PTEN) in apoptosis has been documented in Doxo-induced cardiomyopathy (DIC) and heart failure models. However, whether direct inhibition of PTEN attenuates apoptosis, cardiac remodeling, and inflammatory M1 macrophages in the DIC model remains elusive. Therefore, the present study was designed to understand the effects of VO-OHpic (VO), a potent inhibitor of PTEN, in reducing apoptosis and cardiac remodeling. At day 56, echocardiography was performed, which showed that VO treatment significantly ( P < 0.05) improved heart function. Immunohistochemistry, TUNEL, and histological staining were used to determine apoptosis, proinflammatory M1 macrophages, anti-inflammatory M2 macrophages, and cardiac remodeling. Our data show a significant increase in apoptosis, hypertrophy, fibrosis, and proinflammatory M1 macrophages with Doxo treatment, whereas VO treatment significantly reduced apoptosis, adverse cardiac remodeling, and proinflammatory M1 macrophages significantly ( P < 0.05) compared with the Doxo-treated group. Western blot analysis confirmed the reduction of phosphorylated PTEN and increase in phosphorylated AKT protein expression in the Doxo + VO-treated group. Moreover, VO administration increased anti-inflammatory M2 macrophages. Collectively, our data suggest that VO treatment attenuates apoptosis and adverse cardiac remodeling, a process that is mediated through the PTEN/AKT pathway, resulting in improved heart function in DIC. NEW & NOTEWORTHY Doxorubicin-induced cardiomyopathy (DIC) is still a major issue in patients with cancer. These novel findings on the phosphatase and tensin homolog inhibitor VO-OHpic in DIC is the first report, as per the best of our knowledge, that VO-OHpic significantly decreases apoptosis, fibrosis, hypertrophy, adverse cardiac remodeling, and proinflammatory M1 macrophages and increases anti-inflammatory M2 macrophages along with significantly improved cardiac function. VO-OHpic could be a future therapeutic agent for patients with DIC.
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Affiliation(s)
- Taylor A Johnson
- Division of Metabolic and Cardiovascular Sciences, Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida , Orlando, Florida
| | - Dinender K Singla
- Division of Metabolic and Cardiovascular Sciences, Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida , Orlando, Florida
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119
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Chen X, Wu S, Tang L, Ma L, Wang F, Feng H, Meng J, Han Z. Mesenchymal stem cells overexpressing heme oxygenase-1 ameliorate lipopolysaccharide-induced acute lung injury in rats. J Cell Physiol 2018; 234:7301-7319. [PMID: 30362554 DOI: 10.1002/jcp.27488] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2018] [Accepted: 09/06/2018] [Indexed: 12/18/2022]
Abstract
Acute lung injury (ALI) and acute respiratory distress syndrome (ARDS) are common and potentially lethal clinical syndromes characterized by acute respiratory failure resulting from excessive pulmonary inflammation, noncardiogenic pulmonary edema, and alveolar-capillary barrier disruption. At present, there is no effective and specific therapy for ALI/ARDS. Mesenchymal stem cells (MSCs) have well-known therapeutic potential in patients with ALI/ARDS. Heme oxygenase-1 (HO-1), a cytoprotective enzyme, possesses antioxidative, anti-inflammatory, and antiapoptotic effects. Thus, a combination of MSC transplantation with HO-1 delivery may have an additional protective effect against ALI/ARDS. This study investigated the effect of HO-1-modified bone-marrow-derived MSCs (MSCs-HO-1) on lipopolysaccharide (LPS)-induced ALI and its underlying mechanisms. We established MSCs-HO-1 through lentiviral transduction. The ALI rat model was established by successive LPS inhalations following injection with MSCs-HO-1. The survival rate, histological changes in the lungs, total protein concentration and neutrophil counts in bronchoalveolar lavage fluid, lung wet/dry weight ratio, cytokine levels in serum and lungs, nuclear transcription factor-κB activity, and protein expression of Toll-like receptor 4 signaling adaptors were examined. Furthermore, the cell viability, apoptosis, and paracrine activity of MSCs-HO-1 were examined under inflammatory stimuli in vitro. MSCs-HO-1 injection improved these parameters compared with primary unmodified MSCs. Moreover, MSCs-HO-1 had superior prosurvival and antiapoptotic properties and enhanced paracrine functions in vitro. Therefore, MSCs-HO-1 exert an enhanced protective effect to alleviate LPS-induced ALI in rats, and the mechanisms may be partially associated with superior prosurvival, antiapoptosis, and enhanced paracrine functions of MSCs-HO-1. These findings provide a novel insight into MSC-based therapeutic strategies for treating ALI/ARDS.
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Affiliation(s)
- Xuxin Chen
- Department of Respiratory Medicine, Navy General Hospital of the PLA, Beijing, China
| | - Shanshan Wu
- Department of Radiation Oncology, Navy General Hospital of the PLA, Beijing, China
| | - Lu Tang
- Department of Neurology, The First Hospital of Changsha, Changsha, China
| | - Lei Ma
- Department of Respiratory Medicine, Navy General Hospital of the PLA, Beijing, China
| | - Fan Wang
- Department of Respiratory Medicine, Navy General Hospital of the PLA, Beijing, China
| | - Huasong Feng
- Department of Respiratory Medicine, Navy General Hospital of the PLA, Beijing, China
| | - Jiguang Meng
- Department of Respiratory Medicine, Navy General Hospital of the PLA, Beijing, China
| | - Zhihai Han
- Department of Respiratory Medicine, Navy General Hospital of the PLA, Beijing, China
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Xie W, Lu Q, Wang K, Lu J, Gu X, Zhu D, Liu F, Guo Z. miR-34b-5p inhibition attenuates lung inflammation and apoptosis in an LPS-induced acute lung injury mouse model by targeting progranulin. J Cell Physiol 2018; 233:6615-6631. [PMID: 29150939 PMCID: PMC6001482 DOI: 10.1002/jcp.26274] [Citation(s) in RCA: 110] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2017] [Accepted: 11/14/2017] [Indexed: 12/14/2022]
Abstract
Inflammation and apoptosis play important roles in the initiation and progression of acute lung injury (ALI). Our previous study has shown that progranulin (PGRN) exerts lung protective effects during LPS-induced ALI. Here, we have investigated the potential roles of PGRN-targeting microRNAs (miRNAs) in regulating inflammation and apoptosis in ALI and have highlighted the important role of PGRN. LPS-induced lung injury and the protective roles of PGRN in ALI were first confirmed. The function of miR-34b-5p in ALI was determined by transfection of a miR-34b-5p mimic or inhibitor in intro and in vivo. The PGRN level gradually increased and subsequently significantly decreased, reaching its lowest value by 24 hr; PGRN was still elevated compared to the control. The change was accompanied by a release of inflammatory mediators and accumulation of inflammatory cells in the lungs. Using bioinformatics analysis and RT-PCR, we demonstrated that, among 12 putative miRNAs, the kinetics of the miR-34b-5p levels were closely associated with PGRN expression in the lung homogenates. The gain- and loss-of-function analysis, dual-luciferase reporter assays, and rescue experiments confirmed that PGRN was the functional target of miR-34b-5p. Intravenous injection of miR-34b-5p antagomir in vivo significantly inhibited miR-34b-5p up-regulation, reduced inflammatory cytokine release, decreased alveolar epithelial cell apoptosis, attenuated lung inflammation, and improved survival by targeting PGRN during ALI. miR-34b-5p knockdown attenuates lung inflammation and apoptosis in an LPS-induced ALI mouse model by targeting PGRN. This study shows that miR-34b-5p and PGRN may be potential targets for ALI treatments.
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Affiliation(s)
- Wang Xie
- Department of Respiratory MedicineShanghai East HospitalTongji University School of MedicinePudongShanghaiChina
| | - Qingchun Lu
- Department of Respiratory MedicineShanghai East HospitalTongji University School of MedicinePudongShanghaiChina
| | - Kailing Wang
- Department of Respiratory MedicineShanghai East HospitalTongji University School of MedicinePudongShanghaiChina
| | - Jingjing Lu
- Department of Respiratory MedicineShanghai East HospitalTongji University School of MedicinePudongShanghaiChina
| | - Xia Gu
- Department of Respiratory MedicineShanghai East HospitalTongji University School of MedicinePudongShanghaiChina
| | - Dongyi Zhu
- Department of Respiratory MedicineShanghai East HospitalTongji University School of MedicinePudongShanghaiChina
| | - Fanglei Liu
- Department of Respiratory MedicineShanghai East HospitalTongji University School of MedicinePudongShanghaiChina
| | - Zhongliang Guo
- Department of Respiratory MedicineShanghai East HospitalTongji University School of MedicinePudongShanghaiChina
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121
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Li H, Shi H, Gao M, Ma N, Sun R. Long non-coding RNA CASC2 improved acute lung injury by regulating miR-144-3p/AQP1 axis to reduce lung epithelial cell apoptosis. Cell Biosci 2018; 8:15. [PMID: 29492259 PMCID: PMC5828141 DOI: 10.1186/s13578-018-0205-7] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Accepted: 01/20/2018] [Indexed: 12/20/2022] Open
Abstract
Background and objective Apoptosis of lung epithelial cell is implicated in the pathogenesis of acute lung injury (ALI). To study the protective effect and mechanism of cancer susceptibility candidate 2 (CASC2) on reducing lung epithelial cell apoptosis after LPS inducing acute lung injury in mice. Methods and results The ALI mice model was performed by intratracheally instilling with lipopolysaccharide (LPS). The CASC2 expression detected by quantitative real-time polymerase chain reaction was significantly decreased in LPS-induced A549 cell and ALI mice model. LPS induced A549 cell apoptosis, while transfection with pcDNA-CASC2 reversed the increased cell apoptosis, suggesting overexpression of CASC2 inhibited LPS-induced A549 cell apoptosis. In addition, we found that miR-144-3p expression were opposite to CASC2, while Aquaporin-1 (AQP1) expression was opposite to miR-144-3p in LPS-induced A549 cell and ALI mice model. The RNA immunoprecipitation and RNA pull-down assay demonstrated that CASC2 could function as a miR-144-3p decoy. The luciferase reporter assay revealed that AQP1 was a target of miR-144-3p in A549 cell. And then, further in vitro studied showed that CASC2 controlled AQP1 expression by regulating miR-144-3p, and LPS induced A549 cell apoptosis by regulating CASC2/miR-144-3p/AQP1 axis. At last, after injection with lentivirus-expressing CASC2 or control lentivirus, the mice were intratracheally instilled with LPS. Comparing to the mice injected with pcDNA, the mice injected with pcDNA-CASC2 had a significantly reduced lung wet–dry weight ratio. Conclusions Long non-coding RNA CASC2 improved acute lung injury by regulating miR-144-3p/AQP1 axis to reduce lung epithelial cell apoptosis.
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Affiliation(s)
- Hongbin Li
- Department of Critical Care Medicine, The First Affiliated Hospital of Zhengzhou University, No.1 Jianshe East Road, Zhengzhou, 450052 Henan China
| | - Huijuan Shi
- Department of Critical Care Medicine, The First Affiliated Hospital of Zhengzhou University, No.1 Jianshe East Road, Zhengzhou, 450052 Henan China
| | - Min Gao
- Department of Critical Care Medicine, The First Affiliated Hospital of Zhengzhou University, No.1 Jianshe East Road, Zhengzhou, 450052 Henan China
| | - Ning Ma
- Department of Critical Care Medicine, The First Affiliated Hospital of Zhengzhou University, No.1 Jianshe East Road, Zhengzhou, 450052 Henan China
| | - Rongqing Sun
- Department of Critical Care Medicine, The First Affiliated Hospital of Zhengzhou University, No.1 Jianshe East Road, Zhengzhou, 450052 Henan China
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