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Morin L, Lecureur V, Lescoat A. Results from omic approaches in rat or mouse models exposed to inhaled crystalline silica: a systematic review. Part Fibre Toxicol 2024; 21:10. [PMID: 38429797 PMCID: PMC10905840 DOI: 10.1186/s12989-024-00573-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 02/26/2024] [Indexed: 03/03/2024] Open
Abstract
BACKGROUND Crystalline silica (cSiO2) is a mineral found in rocks; workers from the construction or denim industries are particularly exposed to cSiO2 through inhalation. cSiO2 inhalation increases the risk of silicosis and systemic autoimmune diseases. Inhaled cSiO2 microparticles can reach the alveoli where they induce inflammation, cell death, auto-immunity and fibrosis but the specific molecular pathways involved in these cSiO2 effects remain unclear. This systematic review aims to provide a comprehensive state of the art on omic approaches and exposure models used to study the effects of inhaled cSiO2 in mice and rats and to highlight key results from omic data in rodents also validated in human. METHODS The protocol of systematic review follows PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines. Eligible articles were identified in PubMed, Embase and Web of Science. The search strategy included original articles published after 1990 and written in English which included mouse or rat models exposed to cSiO2 and utilized omic approaches to identify pathways modulated by cSiO2. Data were extracted and quality assessment was based on the SYRCLE's Risk of Bias tool for animal studies. RESULTS Rats and male rodents were the more used models while female rodents and autoimmune prone models were less studied. Exposure of animals were both acute and chronic and the timing of outcome measurement through omics approaches were homogeneously distributed. Transcriptomic techniques were more commonly performed while proteomic, metabolomic and single-cell omic methods were less utilized. Immunity and inflammation were the main domains modified by cSiO2 exposure in lungs of mice and rats. Less than 20% of the results obtained in rodents were finally verified in humans. CONCLUSION Omic technics offer new insights on the effects of cSiO2 exposure in mice and rats although the majority of data still need to be validated in humans. Autoimmune prone model should be better characterised and systemic effects of cSiO2 need to be further studied to better understand cSiO2-induced autoimmunity. Single-cell omics should be performed to inform on pathological processes induced by cSiO2 exposure.
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Affiliation(s)
- Laura Morin
- Univ Rennes, CHU Rennes, INSERM, EHESP, IRSET (Institut de recherche en sante, environnement et travail), UMR_S 1085, 35000, Rennes, France
| | - Valérie Lecureur
- Univ Rennes, CHU Rennes, INSERM, EHESP, IRSET (Institut de recherche en sante, environnement et travail), UMR_S 1085, 35000, Rennes, France.
| | - Alain Lescoat
- Univ Rennes, CHU Rennes, INSERM, EHESP, IRSET (Institut de recherche en sante, environnement et travail), UMR_S 1085, 35000, Rennes, France
- Department of Internal Medicine, Rennes University Hospital, 35000, Rennes, France
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Zhou H, Zhang Q, Liu C, Fan J, Huang W, Li N, Yang M, Wang H, Xie W, Kong H. NLRP3 inflammasome mediates abnormal epithelial regeneration and distal lung remodeling in silica‑induced lung fibrosis. Int J Mol Med 2024; 53:25. [PMID: 38240085 PMCID: PMC10836498 DOI: 10.3892/ijmm.2024.5349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 12/28/2023] [Indexed: 01/23/2024] Open
Abstract
NOD-like receptor protein 3 (NLRP3) inflammasome is closely related to silica particle‑induced chronic lung inflammation but its role in epithelial remodeling, repair and regeneration in the distal lung during development of silicosis remains to be elucidated. The present study aimed to determine the effects of the NLRP3 inflammasome on epithelial remodeling and cellular regeneration and potential mechanisms in the distal lung of silica‑treated mice at three time points. Pulmonary function assessment, inflammatory cell counting, enzyme‑linked immunosorbent assay, histological and immunological analyses, hydroxyproline assay and western blotting were used in the study. Single intratracheal instillation of a silica suspension caused sustained NLRP3 inflammasome activation in the distal lung. Moreover, a time‑dependent increase in airway resistance and a decrease in lung compliance accompanied progression of pulmonary fibrosis. In the terminal bronchiole, lung remodeling including pyroptosis (membrane‑distributed GSDMD+), excessive proliferation (Ki67+), mucus overproduction (mucin 5 subtype AC and B) and epithelial‑mesenchymal transition (decreased E‑Cadherin+ and increased Vimentin+), was observed by immunofluorescence analysis. Notably, aberrant spatiotemporal expression of the embryonic lung stem/progenitor cell markers SOX2 and SOX9 and ectopic distribution of bronchioalveolar stem cells were observed in the distal lung only on the 7th day after silica instillation (the early inflammatory phase of silicosis). Western blotting revealed that the Sonic hedgehog/Glioma‑associated oncogene (Shh/Gli) and Wnt/β‑catenin pathways were involved in NLRP3 inflammasome activation‑mediated epithelial remodeling and dysregulated regeneration during the inflammatory and fibrotic phases. Overall, sustained NLRP3 inflammasome activation led to epithelial remodeling in the distal lung of mice. Moreover, understanding the spatiotemporal profile of dysregulated epithelial repair and regeneration may provide a novel therapeutic strategy for inhalable particle‑related chronic inflammatory and fibrotic lung disease.
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Affiliation(s)
- Hong Zhou
- Department of Pulmonary and Critical Care Medicine, The Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi People's Hospital, Wuxi Medical Center, Nanjing Medical University, Wuxi, Jiangsu 214023, P.R. China
| | - Qun Zhang
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Chenyang Liu
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Jiahao Fan
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Wen Huang
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Nan Li
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Mingxia Yang
- Department of Pulmonary and Critical Care Medicine, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou, Jiangsu 213003, P.R. China
| | - Hong Wang
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Weiping Xie
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Hui Kong
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
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Jia Q, Wang H, Wang Y, Xue W, Jiang Q, Wang J, Ning F, Zhu Z, Tian L. Investigation of the mechanism of silica-induced pulmonary fibrosis: The role of lung microbiota dysbiosis and the LPS/TLR4 signaling pathway. Sci Total Environ 2024; 912:168948. [PMID: 38048996 DOI: 10.1016/j.scitotenv.2023.168948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 11/25/2023] [Accepted: 11/25/2023] [Indexed: 12/06/2023]
Abstract
The widespread manufacture of silica and its extensive use, and potential release of silica into the environment pose a serious human health hazard. Silicosis, a severe global public health issue, is caused by exposure to silica, leading to persistent inflammation and fibrosis of the lungs. The underlying pathogenic mechanisms of silicosis remain elusive. Lung microbiota dysbiosis is associated with the development of inflammation and fibrosis. However, limited information is currently available regarding the role of lung microbiota in silicosis. The study therefore is designed to conduct a comprehensive analysis of the role of lung microbiota dysbiosis and establish a basis for future investigations into the potential mechanisms underlying silicosis. Here, the pathological and biochemical parameters were used to systematically assessed the degree of inflammation and fibrosis following silica exposure and treatment with combined antibiotics. The underlying mechanisms were studied via integrative multi-omics analyses of the transcriptome and microbiome. Analysis of 16S ribosomal DNA revealed dysbiosis of the microbial community in silicosis, characterized by a predominance of gram-negative bacteria. Exposure to silica has been shown to trigger lung inflammation and fibrosis, leading to an increased concentration of lipopolysaccharides in the bronchoalveolar lavage fluid. Furthermore, Toll-like receptor 4 was identified as a key molecule in the lung microbiota dysbiosis associated with silica-induced lung fibrosis. All of these outcomes can be partially controlled through combined antibiotic administration. The study findings demonstrate that the dysbiosis of lung microbiota enhances silica-induced fibrosis associated with the lipopolysaccharides/Toll-like receptor 4 pathway and provided a promising target for therapeutic intervention of silicosis.
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Affiliation(s)
- Qiyue Jia
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Hongwei Wang
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Yan Wang
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Wenming Xue
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Qiyue Jiang
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Jiaxin Wang
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Fuao Ning
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Zhonghui Zhu
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China.
| | - Lin Tian
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China.
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Jiao B, Zhang Q, Jin C, Yu H, Wu Q. IRF4 Participates in Pulmonary Fibrosis Induced by Silica Particles through Regulating Macrophage Polarization and Fibroblast Activation. Inflammation 2024; 47:45-59. [PMID: 37938462 DOI: 10.1007/s10753-023-01890-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 07/16/2023] [Accepted: 08/15/2023] [Indexed: 11/09/2023]
Abstract
Long-term exposure to silica dust can cause silicosis, which is characterized by chronic progressive inflammatory injury, fibroblast activation, and the deposition of extracellular matrix. IRF4 is involved in immune response. However, the potential regulation of IRF4 in silicosis and pulmonary fibrosis remains largely unexplored. In this study, RNA-seq analysis identified the upregulated expression of IRF4 in fibrotic lung tissues of mice exposed to silica particles. And we verified the increased expression of IRF4 in SiO2-treated macrophages and TGF-β1-treated fibroblasts. We further found that the down-regulation of IRF4 impeded the macrophage polarization and the release of pro-fibrotic factors. Moreover, the down-regulation of IRF4 alleviated the migration, invasion, and the expression of fibrotic molecules in fibroblasts. Using ChIP-qPCR assay, we confirmed that IRF4 regulated the transcriptional activity of the IL-17A promoter, thus stimulated fibroblast activation, migration and invasion. In vivo experiment, the AAV-siIRF4 was designed to interfere with the expression of IRF4 in lung tissues of mice exposed to silica particles. Whole blood, bronchoalveolar lavage fluid and lung tissues were obtained from mice at 7, 14, 28 and 56 days after silica exposure. The results showed that the leukocyte content and inflammatory factors reached a peak at day 14 and remained peak for a long time after IRF4 knockdown. Furthermore, the fibrotic responses of mouse lung tissues were alleviated after IRF4 knockdown. Our study explored the important roles of IRF4 in inflammatory and fibrotic responses, which provided a new target for the treatment of silicosis and pulmonary fibrosis.
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Affiliation(s)
- Biyang Jiao
- School of Public Health, Xuzhou Medical University, Xuzhou, 221004, China
| | - Qianyi Zhang
- School of Public Health, Xuzhou Medical University, Xuzhou, 221004, China
| | - Chunmeng Jin
- School of Public Health, Xuzhou Medical University, Xuzhou, 221004, China
| | - Hongmin Yu
- School of Public Health, Xuzhou Medical University, Xuzhou, 221004, China
| | - Qiuyun Wu
- School of Public Health, Xuzhou Medical University, Xuzhou, 221004, China.
- Key Laboratory of Human Genetics and Environmental Medicine, Xuzhou Medical University, Xuzhou, 221004, China.
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Ban J, Chang S, Ma P, Wang X, Liu F. lncRNA Profiling of Exosomes and Its Communication Role in Regulating Silica-Stimulated Macrophage Apoptosis and Fibroblast Activation. Biomolecules 2024; 14:146. [PMID: 38397383 PMCID: PMC10886698 DOI: 10.3390/biom14020146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 01/17/2024] [Accepted: 01/22/2024] [Indexed: 02/25/2024] Open
Abstract
Long-term silica particle exposure leads to interstitial pulmonary inflammation and fibrosis, called silicosis. Silica-activated macrophages secrete a wide range of cytokines resulting in persistent inflammation. In addition, silica-stimulated activation of fibroblast is another checkpoint in the progression of silicosis. The pathogenesis after silica exposure is complex, involving intercellular communication and intracellular signaling pathway transduction, which was ignored previously. Exosomes are noteworthy because of their crucial role in intercellular communication by delivering bioactive substances, such as lncRNA. However, the expression profile of exosomal lncRNA in silicosis has not been reported yet. In this study, exosomes were isolated from the peripheral serum of silicosis patients or healthy donors. The exosomal lncRNAs were profiled using high-throughput sequencing technology. Target genes were predicted, and functional annotation was performed using differentially expressed lncRNAs. Eight aberrant expressed exosomal lncRNAs were considered to play a key role in the process of silicosis according to the OPLS-DA. Furthermore, the increased expression of lncRNA MSTRG.43085.16 was testified in vitro. Its target gene PARP1 was critical in regulating apoptosis based on bioinformatics analysis. In addition, the effects of exosomes on macrophage apoptosis and fibroblast activation were checked based on a co-cultured system. Our findings suggested that upregulation of lncRNA MSTRG.43085.16 could regulate silica-induced macrophage apoptosis through elevating PARP1 expression, and promote fibroblast activation, implying that the exosomal lncRNA MSTRG.43085.16 might have potential as a biomarker for the early diagnosis of silicosis.
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Affiliation(s)
- Jiaqi Ban
- Division of Pneumoconiosis, School of Public Health, China Medical University, Shenyang 110122, China; (J.B.); (S.C.); (P.M.)
- The Key Laboratory of Environmental Pollution Monitoring and Disease Control, School of Public Health, Ministry of Education, Guizhou Medical University, Guiyang 550025, China
| | - Shuai Chang
- Division of Pneumoconiosis, School of Public Health, China Medical University, Shenyang 110122, China; (J.B.); (S.C.); (P.M.)
| | - Pengwei Ma
- Division of Pneumoconiosis, School of Public Health, China Medical University, Shenyang 110122, China; (J.B.); (S.C.); (P.M.)
| | - Xin Wang
- Tianjin Centers for Disease Control and Prevention, Tianjin 300011, China;
| | - Fangwei Liu
- Division of Pneumoconiosis, School of Public Health, China Medical University, Shenyang 110122, China; (J.B.); (S.C.); (P.M.)
- Key Laboratory of Environmental Stress and Chronic Disease Control and Prevention, Ministry of Education, China Medical University, Shenyang 110122, China
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6
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Zhou X, Zhang C, Yang S, Yang L, Luo W, Zhang W, Zhang X, Chao J. Macrophage-derived MMP12 promotes fibrosis through sustained damage to endothelial cells. J Hazard Mater 2024; 461:132733. [PMID: 37816293 DOI: 10.1016/j.jhazmat.2023.132733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 09/16/2023] [Accepted: 10/04/2023] [Indexed: 10/12/2023]
Abstract
Macrophages are essential for the maintenance of endothelial cell function. However, the potential impact and mechanisms of crosstalk between macrophages and endothelial cells during silicosis progression remain unexplored. To fill this knowledge gap, a mouse model of silicosis was established. Single cell sequencing, spatial transcriptome sequencing, western blotting, immunofluorescence staining, tube-forming and wound healing assays were used to explore the effects of silicon dioxide on macrophage-endothelial interactions. To investigate the mechanism of macrophage-mediated fibrosis, MMP12 was specifically inactivated using siRNA and pharmacological approaches, and macrophages were depleted using disodium chlorophosphite liposomes. Compared to the normal saline group, the silica dust group showed altered macrophage-endothelial interactions. Matrix metalloproteinase family member MMP12 was identified as a key mediator of the altered function of macrophage-endothelial interactions after silica exposure, which was accompanied by pro-inflammatory macrophage activation and fibrotic progression. By using ablation strategies, macrophage-derived MMP12 was shown to mediate endothelial cell dysfunction by accumulating on the extracellular matrix. During the inflammatory phase of silicosis, MMP12 secreted by pro-inflammatory macrophages caused decreased endothelial cell viability, reduced migration, decreased trans-endothelial resistance and increased permeability; while during the fibrotic phase, macrophage-derived MMP12 sustained endothelial cell injury through accumulation on the extracellular matrix.
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Affiliation(s)
- Xinbei Zhou
- Jiangsu Provincial Key Laboratory of Critical Care Medicine, Zhongda Hospital, Department of Physiology, School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China; Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, Jiangsu, 210009, China
| | - Cong Zhang
- Jiangsu Provincial Key Laboratory of Critical Care Medicine, Zhongda Hospital, Department of Physiology, School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China; Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, Jiangsu, 210009, China
| | - Shaoqi Yang
- Jiangsu Provincial Key Laboratory of Critical Care Medicine, Zhongda Hospital, Department of Physiology, School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China; Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, Jiangsu, 210009, China
| | - Liliang Yang
- Jiangsu Provincial Key Laboratory of Critical Care Medicine, Zhongda Hospital, Department of Physiology, School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China
| | - Wei Luo
- Jiangsu Provincial Key Laboratory of Critical Care Medicine, Zhongda Hospital, Department of Physiology, School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China; Jiangsu Key Laboratory of Molecular and Functional Imaging, Department of Radiology, Zhongda Hospital, Medical School of Southeast University, Nanjing 210009, China
| | - Wei Zhang
- Jiangsu Provincial Key Laboratory of Critical Care Medicine, Zhongda Hospital, Department of Physiology, School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China
| | - Xinxin Zhang
- Jiangsu Provincial Key Laboratory of Critical Care Medicine, Zhongda Hospital, Department of Physiology, School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China
| | - Jie Chao
- Jiangsu Provincial Key Laboratory of Critical Care Medicine, Zhongda Hospital, Department of Physiology, School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China; Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, Jiangsu, 210009, China; Jiangsu Key Laboratory of Molecular and Functional Imaging, Department of Radiology, Zhongda Hospital, Medical School of Southeast University, Nanjing 210009, China; School of Medicine, Xizang Minzu University, Xianyang, Shanxi, 712082, China.
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He H, Qi R, Cui J, Liu M, Guan B, Zhou Y, Zhang Y, Hao X, Wang H, Liu H. Lipid characteristics of lung tissue in silicosis rat model were studied based on lipid metabolomics. Toxicol Lett 2024; 391:111-119. [PMID: 38061438 DOI: 10.1016/j.toxlet.2023.12.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 11/08/2023] [Accepted: 12/04/2023] [Indexed: 12/22/2023]
Abstract
Silicosis is a common occupational disease caused by the long-term inhalation of large amounts of silica dust. Lipid metabolism plays an important role in the progression of silicosis, but its contributing mechanism remains unclear. The aim of this study was to investigate the differential lipid metabolites and active metabolic pathways in silicosis rat lung tissue. We first constructed a silicosis rat model, and randomly divided 24 male SD rats into control group (C), silicosis group for 1 week (S1W), silicosis group for 2 weeks (S2W) and silicosis group for 4 weeks (S4W) with 6 rats in each group. 1 mL SiO2 suspension (50 mg/mL) or normal saline were injected into the trachea, and the rats were killed at 1 week, 2 weeks and 4 weeks, respectively. The lung tissue pathology of the rats was observed by HE staining and VG staining, and the plasma TC and FC levels were detected by the kit. Western blot was used to detect the expression of lipid-related factors CD36, PGC1α and LXR. In addition, lipidomics analysis of lung tissue samples was performed using UPLC-IMS-QTOF mass spectrometer to screen out potential differential metabolites in silicosis models and analyze lipid enrichment, and verified the expression of differential gene CHPT1 in the metabolic pathway. HE and VG staining showed that the number of nodules and fibrosis increased in a time-dependent manner in the silicosis model group, and the levels of TC, FC and CE in silicosis plasma increased. Western blot results showed that PGC1α and LXR decreased in the silicosis model group, while CD36 expression increased. In addition, metabolomics screened out 28 differential metabolites in the S1W group, 32 in the S2W group, and 22 in the S4W group, and found that the differential metabolites were mainly enriched in metabolic pathways such as glycerophospholipid metabolism and ether lipid metabolism, and the expression of differential gene CHPT1 in the metabolic pathway was decreased in the silicosis model group. These results suggest that there are significant changes in lipid metabolites in lung tissue in silicosis rat models, and glycerophospholipid metabolism was significantly enriched, suggesting that glycerophospholipids play an important role in the progression of silicosis. The differential metabolites and pathways reported in this study may provide new ideas for the pathogenesis of silicosis.
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Affiliation(s)
- Hailan He
- School of Public Health, North China University of Science and Technology, Tangshan, Hebei 063210, China
| | - Rong Qi
- School of Clinical Medicine, North China University of Science and Technology, Tangshan, Hebei 063210, China
| | - Jie Cui
- School of Public Health, North China University of Science and Technology, Tangshan, Hebei 063210, China
| | - Mingming Liu
- School of Public Health, North China University of Science and Technology, Tangshan, Hebei 063210, China
| | - Bo Guan
- School of Public Health, North China University of Science and Technology, Tangshan, Hebei 063210, China
| | - Yufan Zhou
- School of Public Health, North China University of Science and Technology, Tangshan, Hebei 063210, China
| | - Yingshu Zhang
- School of Public Health, North China University of Science and Technology, Tangshan, Hebei 063210, China
| | - Xiaohui Hao
- School of Public Health, North China University of Science and Technology, Tangshan, Hebei 063210, China; Hebei Key Laboratory of Organ Fibrosis, North China University of Science and Technology, Tangshan, Hebei 063210, China
| | - Hongli Wang
- School of Public Health, North China University of Science and Technology, Tangshan, Hebei 063210, China; Hebei Key Laboratory of Organ Fibrosis, North China University of Science and Technology, Tangshan, Hebei 063210, China.
| | - Heliang Liu
- School of Public Health, North China University of Science and Technology, Tangshan, Hebei 063210, China; Hebei Key Laboratory of Organ Fibrosis, North China University of Science and Technology, Tangshan, Hebei 063210, China.
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Su W, Nong Q, Wu J, Fan R, Liang Y, Hu A, Gao Z, Liang W, Deng Q, Wang H, Xia L, Huang Y, Qin Y, Zhao N. Anti-inflammatory protein TSG-6 secreted by BMSCs attenuates silica-induced acute pulmonary inflammation by inhibiting NLRP3 inflammasome signaling in macrophages. Int J Biol Macromol 2023; 253:126651. [PMID: 37709227 DOI: 10.1016/j.ijbiomac.2023.126651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 08/28/2023] [Accepted: 08/30/2023] [Indexed: 09/16/2023]
Abstract
Silicosis is a severe occupational lung disease caused by inhalation of silica particles. Unfortunately, there are currently limited treatment options available for silicosis. Recent advances have indicated that bone marrow mesenchymal stem cells (BMSCs) have a therapeutic effect on silicosis, but their efficacy and underlying mechanisms remain largely unknown. In this study, we focused on the early phase of silica-induced lung injury to investigate the therapeutic effect of BMSCs. Our findings demonstrated that BMSCs attenuated silica-induced acute pulmonary inflammation by inhibiting NLRP3 inflammasome pathways in lung macrophages. To further understand the mechanisms involved, we utilized RNA sequencing to analyze the transcriptomes of BMSCs co-cultured with silica-stimulated bone marrow-derived macrophages (BMDMs). The results clued tumor necrosis factor-stimulated gene 6 (TSG-6) might be a potentially key paracrine secretion factor released from BMSCs, which exerts a protective effect. Furthermore, the anti-inflammatory and inflammasome pathway inhibition effects of BMSCs were attenuated when TSG-6 expression was silenced, both in vivo and in vitro. Additionally, treatment with exogenous recombinant mouse TSG-6 (rmTSG-6) demonstrated similar effects to BMSCs in attenuating silica-induced inflammation. Overall, our findings suggested that BMSCs can regulate the activation of inflammasome in macrophages by secreting TSG-6, thereby protecting against silica-induced acute pulmonary inflammation both in vivo and in vitro.
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Affiliation(s)
- Wenyao Su
- Guangdong Province Hospital for Occupational Diseases Prevention and Treatment, Guangzhou 510300, China; Shunde Women and Children's Hospital (Maternity and Child Healthcare Hospital of Shunde Foshan), Guangdong Medical University, Foshan, Guangdong 528300, China; School of Public Health, Guangzhou Medical University, Guangzhou, Guangdong 511436, China
| | - Qiying Nong
- Guangdong Province Hospital for Occupational Diseases Prevention and Treatment, Guangzhou 510300, China
| | - Jie Wu
- Emeishan Centerfor Disease Control and Prevention, Emeishan, Sichuan 614299, China
| | - Ruihong Fan
- Guangdong Province Hospital for Occupational Diseases Prevention and Treatment, Guangzhou 510300, China
| | - Yuanting Liang
- Guangdong Province Hospital for Occupational Diseases Prevention and Treatment, Guangzhou 510300, China; School of Public Health, Guangzhou Medical University, Guangzhou, Guangdong 511436, China
| | - Anyi Hu
- Health Science Center of Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Zhongxiang Gao
- Guangdong Province Hospital for Occupational Diseases Prevention and Treatment, Guangzhou 510300, China
| | - Weihui Liang
- Guangdong Province Hospital for Occupational Diseases Prevention and Treatment, Guangzhou 510300, China
| | - Qifei Deng
- Guangdong Province Hospital for Occupational Diseases Prevention and Treatment, Guangzhou 510300, China
| | - Hailan Wang
- Guangdong Province Hospital for Occupational Diseases Prevention and Treatment, Guangzhou 510300, China
| | - Lihua Xia
- Guangdong Province Hospital for Occupational Diseases Prevention and Treatment, Guangzhou 510300, China
| | - Yongshun Huang
- Guangdong Province Hospital for Occupational Diseases Prevention and Treatment, Guangzhou 510300, China
| | - Yiru Qin
- Guangdong Province Hospital for Occupational Diseases Prevention and Treatment, Guangzhou 510300, China.
| | - Na Zhao
- Guangdong Province Hospital for Occupational Diseases Prevention and Treatment, Guangzhou 510300, China; School of Public Health, Guangzhou Medical University, Guangzhou, Guangdong 511436, China; School of Public Health, Southern Medical University, Guangzhou, Guangdong 510515, China.
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Wang G, Hu W, He B, Ma Y. Lung adenocarcinoma presenting with intrapulmonary metastases through air spaces concomitant with silicosis: a case report and literature review. Cell Cycle 2023; 22:2113-2118. [PMID: 37955393 PMCID: PMC10732644 DOI: 10.1080/15384101.2023.2277512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2022] [Accepted: 10/20/2023] [Indexed: 11/14/2023] Open
Abstract
Herein, we reported a rare case of bilateral intrapulmonary metastases spread through air spaces (STAS) and silicosis to advance understanding and knowledge of this disease. A middle-aged man was diagnosed with a left upper lung nodule with bilateral silicosis by preoperative imaging. Local pleural indentation and extensive metastases spread in the visceral pleura were observed during the operation. Pathological examination showed multiple metastases of lung adenocarcinoma, and STAS positive. Genetic testing indicated EGFR mutation, and ektinib was administered. STAS can promote lung cancer, leading to multiple pulmonary metastases, and silicosis can contribute to the carcinogenesis of lung cancer. This case provided valuable clinical lessons. More studies are warranted to elucidate the role and underlying mechanism of silicosis and STAS in the development of lung cancer. More accurate imaging methods and radiographic criteria should be formulated for different diffuse nodules and STAS grades, and the exploration of optimal therapeutic regimens to treat these concomitant patients is urgently needed to improve diagnostic rates and formulate more optimal therapies.
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Affiliation(s)
- Guzong Wang
- Department of thoracic surgery, The First People’s Hospital of Yuhang District, Hangzhou, China; The First Affiliated Hospital, Zhejiang University School of Medicine, Liangzhu Branch
- Department of thoracic surgery, Affiliated hospital of Shaoxing University, Shaoxing, China
- Zhejiang Chinese medical university, Hangzhou, China
| | - Wenbin Hu
- Department of thoracic surgery, Affiliated hospital of Shaoxing University, Shaoxing, China
| | - Binjun He
- Department of thoracic surgery, Affiliated hospital of Shaoxing University, Shaoxing, China
| | - Yanhong Ma
- Department of oncology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
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Martínez-López A, Candel S, Tyrkalska SD. Animal models of silicosis: fishing for new therapeutic targets and treatments. Eur Respir Rev 2023; 32:230078. [PMID: 37558264 PMCID: PMC10424253 DOI: 10.1183/16000617.0078-2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Accepted: 06/08/2023] [Indexed: 08/11/2023] Open
Abstract
Silicosis as an occupational lung disease has been present in our lives for centuries. Research studies have already developed and implemented many animal models to study the pathogenesis and molecular basis of the disease and enabled the search for treatments. As all experimental animal models used to date have their advantages and disadvantages, there is a continuous search for a better model, which will not only accelerate basic research, but also contribute to clinical aspects and drug development. We review here, for the first time, the main animal models developed to date to study silicosis and the unique advantages of the zebrafish model that make it an optimal complement to other models. Among the main advantages of zebrafish for modelling human diseases are its ease of husbandry, low maintenance cost, external fertilisation and development, its transparency from early life, and its amenability to chemical and genetic screening. We discuss the use of zebrafish as a model of silicosis, its similarities to other animal models and the characteristics of patients at molecular and clinical levels, and show the current state of the art of inflammatory and fibrotic zebrafish models that could be used in silicosis research.
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Affiliation(s)
- Alicia Martínez-López
- Instituto Murciano de Investigación Biosanitaria (IMIB)-Pascual Parrilla, Murcia, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, Madrid, Spain
- These authors contributed equally to this work
| | - Sergio Candel
- Instituto Murciano de Investigación Biosanitaria (IMIB)-Pascual Parrilla, Murcia, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, Madrid, Spain
- Departamento de Biología Celular e Histología, Facultad de Biología, Universidad de Murcia, Murcia, Spain
- These authors contributed equally to this work
| | - Sylwia D Tyrkalska
- Instituto Murciano de Investigación Biosanitaria (IMIB)-Pascual Parrilla, Murcia, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, Madrid, Spain
- Departamento de Biología Celular e Histología, Facultad de Biología, Universidad de Murcia, Murcia, Spain
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11
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Jiang Q, Zhao J, Jia Q, Wang H, Xue W, Ning F, Wang J, Wang Y, Zhu Z, Tian L. MiR-148a-3p within HucMSC-Derived Extracellular Vesicles Suppresses Hsp90b1 to Prevent Fibroblast Collagen Synthesis and Secretion in Silica-Induced Pulmonary Fibrosis. Int J Mol Sci 2023; 24:14477. [PMID: 37833927 PMCID: PMC10572270 DOI: 10.3390/ijms241914477] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 09/13/2023] [Accepted: 09/15/2023] [Indexed: 10/15/2023] Open
Abstract
Silicosis is a fatal occupational respiratory disease caused by the prolonged inhalation of respirable silica. The core event of silicosis is the heightened activity of fibroblasts, which excessively synthesize extracellular matrix (ECM) proteins. Our previous studies have highlighted that human umbilical cord mesenchymal stem cell-derived extracellular vesicles (hucMSC-EVs) hold promise in mitigating silicosis and the significant role played by microRNAs (miRNAs) in this process. Delving deeper into this mechanism, we found that miR-148a-3p was the most abundant miRNA of the differential miRNAs in hucMSC-EVs, with the gene heat shock protein 90 beta family member 1 (Hsp90b1) as a potential target. Notably, miR-148a-3p's expression was downregulated during the progression of silica-induced pulmonary fibrosis both in vitro and in vivo, but was restored after hucMSC-EVs treatment (p < 0.05). Introducing miR-148a-3p mimics effectively hindered the collagen synthesis and secretion of fibroblasts induced by transforming growth factor-β1 (TGF-β1) (p < 0.05). Confirming our hypothesis, Hsp90b1 was indeed targeted by miR-148a-3p, with significantly reduced collagen activity in TGF-β1-treated fibroblasts upon Hsp90b1 inhibition (p < 0.05). Collectively, our findings provide compelling evidence that links miR-148a-3p present in hucMSC-EVs with the amelioration of silicosis, suggesting its therapeutic potential by specifically targeting Hsp90b1, thereby inhibiting fibroblast collagen activities. This study sheds light on the role of miR-148a-3p in hucMSC-EVs, opening avenues for innovative therapeutic interventions targeting molecular pathways in pulmonary fibrosis.
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Affiliation(s)
- Qiyue Jiang
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Jing Zhao
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Qiyue Jia
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Hongwei Wang
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Wenming Xue
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Fuao Ning
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Jiaxin Wang
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Yan Wang
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Zhonghui Zhu
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Lin Tian
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
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12
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Ou L, Zhang P, Huang Z, Cheng Y, Miao Q, Niu R, Hu Y, Chen Y. Targeting STING-mediated pro-inflammatory and pro-fibrotic effects of alveolar macrophages and fibroblasts blunts silicosis caused by silica particles. J Hazard Mater 2023; 458:131907. [PMID: 37379600 DOI: 10.1016/j.jhazmat.2023.131907] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 06/12/2023] [Accepted: 06/19/2023] [Indexed: 06/30/2023]
Abstract
Silica is utilized extensively in industrial and commercial applications as a chemical raw material, increasing its exposure and hazardous potential to populations, with silicosis serving as an important representative. Silicosis is characterized by persistent lung inflammation and fibrosis, for which the underlying pathogenesis of silicosis is unclear. Studies have shown that the stimulating interferon gene (STING) participates in various inflammatory and fibrotic lesions. Therefore, we speculated that STING might also play a key role in silicosis. Here we found that silica particles drove the double-stranded DNA (dsDNA) release to activate the STING signal pathway, contributing to alveolar macrophages (AMs) polarization by secreting diverse cytokines. Then, multiple cytokines could generate a micro-environment to exacerbate inflammation and promote the activation of lung fibroblasts, hastening fibrosis. Intriguingly, STING was also crucial for the fibrotic effects induced by lung fibroblasts. Loss of STING could effectively inhibit silica particles-induced pro-inflammatory and pro-fibrotic effects by regulating macrophages polarization and lung fibroblasts activation to alleviate silicosis. Collectively, our results have revealed a novel pathogenesis of silica particles-caused silicosis mediated by the STING signal pathway, indicating that STING may be regarded as a promising therapeutic target in the treatment of silicosis.
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Affiliation(s)
- Liang Ou
- Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention (China Medical University), Ministry of Education, Shenyang 110122, China; Division of Pneumoconiosis, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, China
| | - Peng Zhang
- Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention (China Medical University), Ministry of Education, Shenyang 110122, China; Division of Pneumoconiosis, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, China
| | - Zhengpeng Huang
- Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention (China Medical University), Ministry of Education, Shenyang 110122, China; Division of Pneumoconiosis, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, China
| | - Yuxing Cheng
- Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention (China Medical University), Ministry of Education, Shenyang 110122, China; Division of Pneumoconiosis, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, China
| | - Qianru Miao
- Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention (China Medical University), Ministry of Education, Shenyang 110122, China; Division of Pneumoconiosis, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, China
| | - Ru Niu
- Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention (China Medical University), Ministry of Education, Shenyang 110122, China; Division of Pneumoconiosis, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, China
| | - Yuxin Hu
- Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention (China Medical University), Ministry of Education, Shenyang 110122, China; Experimental Teaching Center, School of Public Health, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang 110122, China
| | - Ying Chen
- Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention (China Medical University), Ministry of Education, Shenyang 110122, China; Division of Pneumoconiosis, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, China.
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Wang Y, Cheng D, Li Z, Sun W, Zhou S, Peng L, Xiong H, Jia X, Li W, Han L, Liu Y, Ni C. IL33-mediated NPM1 promotes fibroblast-to-myofibroblast transition via ERK/AP-1 signaling in silica-induced pulmonary fibrosis. Toxicol Sci 2023; 195:71-86. [PMID: 37399107 DOI: 10.1093/toxsci/kfad061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/05/2023] Open
Abstract
Silicosis is a global occupational pulmonary disease due to the accumulation of silica dust in the lung. Lacking effective clinical drugs makes the treatment of this disease quite challenging in clinics largely because the pathogenic mechanisms remain obscure. Interleukin 33 (IL33), a pleiotropic cytokine, could promote wound healing and tissue repair via the receptor ST2. However, the mechanisms governing the involvement of IL33 in silicosis progression remain to be further explored. Here, we demonstrated that the IL33 levels in the lung sections were significantly overexpressed after bleomycin and silica treatment. Chromatin immunoprecipitation assay, knockdown, and reverse experiments were performed in lung fibroblasts to prove gene interaction following exogenous IL33 treatment or cocultured with silica-treated lung epithelial cells. Mechanistically, we illustrated that silica-stimulated lung epithelial cells secreted IL33 and further promoted the activation, proliferation, and migration of pulmonary fibroblasts by activating the ERK/AP-1/NPM1 signaling pathway in vitro. And more, treatment with NPM1 siRNA-loaded liposomes markedly protected mice from silica-induced pulmonary fibrosis in vivo. In conclusion, the involvement of NPM1 in the progression of silicosis is regulated by the IL33/ERK/AP-1 signaling axis, which is the potential therapeutic target candidate in developing novel antifibrotic strategies for pulmonary fibrosis.
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Affiliation(s)
- Yue Wang
- Department of Occupational Medical and Environmental Health, Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Demin Cheng
- Department of Occupational Medical and Environmental Health, Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Ziwei Li
- Department of Occupational Medical and Environmental Health, Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Wenqing Sun
- Department of Occupational Medical and Environmental Health, Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Siyun Zhou
- Department of Occupational Medical and Environmental Health, Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Lan Peng
- Department of Occupational Medical and Environmental Health, Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Haojie Xiong
- Department of Occupational Medical and Environmental Health, Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Xinying Jia
- Department of Occupational Medical and Environmental Health, Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Wei Li
- Department of Occupational Medical and Environmental Health, Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China
- Institute of Occupational Disease Prevention, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210028, China
| | - Lei Han
- Institute of Occupational Disease Prevention, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210028, China
| | - Yi Liu
- Department of Occupational Medical and Environmental Health, Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China
- Gusu School, Nanjing Medical University, Nanjing 211166, China
| | - Chunhui Ni
- Department of Occupational Medical and Environmental Health, Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China
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Akira M, Suganuma N. Imaging diagnosis of pneumoconiosis with predominant nodular pattern: HRCT and pathologic findings. Clin Imaging 2023; 97:28-33. [PMID: 36878176 DOI: 10.1016/j.clinimag.2023.02.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 01/30/2023] [Accepted: 02/13/2023] [Indexed: 02/19/2023]
Abstract
The radiological patterns of known pneumoconiosis have been changing in recent years. The basic pathology in pneumoconiosis is the presence of dust macules, mixed dust fibrosis, nodules, diffuse interstitial fibrosis, and progressive massive fibrosis. These pathologic changes can coexist in dust-exposed workers. High resolution CT reflects pathological findings in pneumoconiosis and is useful for the diagnosis. Pneumoconiosis such as silicosis, coal workers' pneumoconiosis, graphite pneumoconiosis, and welder's pneumoconiosis, has predominant nodular HRCT pattern. Diffuse interstitial pulmonary fibrosis is sometimes found in the lungs of this pneumoconiosis. In the early stages of metal lung, such as aluminosis and hard metal lung, centrilobular nodules are predominant findings, and in the advanced stages, reticular opacities are predominant findings. The clinician must understand the spectrum of expected imaging patterns related to known dust exposures and novel exposures. In this article, HRCT and pathologic findings of pneumoconiosis with predominant nodular opacities are shown.
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Affiliation(s)
- Masanori Akira
- Department of Radiology, Shin-Aikai Katano Hospital, 39-1 Matsuzuka, Katano City, Osaka 576-0043, Japan.
| | - Narufumi Suganuma
- Department of Environmental Medicine, Kochi Medical School, Okochokohasu, Nankoku, Kochi 783-0043, Japan.
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Yang F, Hou R, Liu X, Tian Y, Bai Y, Li J, Zhao P. Yangqing Chenfei formula attenuates silica-induced pulmonary fibrosis by suppressing activation of fibroblast via regulating PI3K/AKT, JAK/STAT, and Wnt signaling pathway. Phytomedicine 2023; 110:154622. [PMID: 36577208 DOI: 10.1016/j.phymed.2022.154622] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 12/07/2022] [Accepted: 12/20/2022] [Indexed: 06/17/2023]
Abstract
BACKGROUND Yangqing Chenfei formula (YCF) has been demonstrated its clinical efficiency on silicosis patients. However, the effect of YCF against silicotic fibrosis and its mechanism remain unclear. PURPOSE This study is aimed to investigate active compounds and molecular mechanism of YCF in treating silicosis. METHOD YCF was orally administrated to silicosis rats induced by crystalline silica. The effective fraction of YCF and the compounds was isolated and identified by using macroporous resin and HPLC-MS, respectively. The targets and potential molecular mechanism of YCF against silicotic fibrosis were investigated through pharmacological network and RNA-sequencing analysis and in vitro-experimental validation. RESULTS YCF could remarkably improve the lung function and pathological changes of silicotic rats, reduce the aggregation of fibrocytes and deposition of ECM, such as collagen I, III, FN, and α-SMA, and suppress the TGF-β/Smad3 signaling. Furthermore, YCF6, the effective fraction derived from YCF, could significantly inhibit fibroblast activation induced by TGF-β. Then, 135 compounds were identified from YCF6 by using HPLC-MS, and Network pharmacology analysis predicted total 941 targets for these compounds. Moreover, 409 differentially expressed genes of fibroblast activation induced by TGF-β were identified. Then, integrated analysis of the 941 targets with 409 differentially expressed genes showed that YCF6 contains multiple compounds, such as tangeretin, L-Malic acid, 2-Monolinolein etc., which inhibits fibroblast activation probably by targeting different proteins, such as PIK3CA, AKT1, JAK2, STAT3, GSK3β, leading to regulate the signal network, such as PI3K/AKT signaling pathway, JAK/STAT signaling pathway, and Wnt signaling pathway. Finally, in vitro experiment indicated that tangeretin, the active compound contained in YCF6, could significantly inhibit TGF-β induced fibroblast activation. Moreover, YCF6 and tangeretin could markedly inhibit the activation of PI3K/AKT, JAK/STAT, and Wnt pathway. CONCLUSION YCF contained multiple compounds and targeted various proteins that regulated the fibroblast activation, which might be the molecular mechanisms of it in treating silicosis.
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Affiliation(s)
- Fan Yang
- Henan Key Laboratory of Chinese Medicine for Respiratory Disease, Henan University of Chinese Medicine, Zhengzhou 450046, Henan Province, China; Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases co-constructed by Henan province & Education Ministry of PR China, China
| | - Runsu Hou
- Henan Key Laboratory of Chinese Medicine for Respiratory Disease, Henan University of Chinese Medicine, Zhengzhou 450046, Henan Province, China; Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases co-constructed by Henan province & Education Ministry of PR China, China; Academy of Chinese Medical Sciences, Henan University of Chinese Medicine, Zhengzhou 450046, Henan Province, China
| | - Xinguang Liu
- Henan Key Laboratory of Chinese Medicine for Respiratory Disease, Henan University of Chinese Medicine, Zhengzhou 450046, Henan Province, China; Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases co-constructed by Henan province & Education Ministry of PR China, China; Academy of Chinese Medical Sciences, Henan University of Chinese Medicine, Zhengzhou 450046, Henan Province, China
| | - Yange Tian
- Henan Key Laboratory of Chinese Medicine for Respiratory Disease, Henan University of Chinese Medicine, Zhengzhou 450046, Henan Province, China; Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases co-constructed by Henan province & Education Ministry of PR China, China; Academy of Chinese Medical Sciences, Henan University of Chinese Medicine, Zhengzhou 450046, Henan Province, China
| | - Yunping Bai
- Henan Key Laboratory of Chinese Medicine for Respiratory Disease, Henan University of Chinese Medicine, Zhengzhou 450046, Henan Province, China; Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases co-constructed by Henan province & Education Ministry of PR China, China; Academy of Chinese Medical Sciences, Henan University of Chinese Medicine, Zhengzhou 450046, Henan Province, China
| | - Jiansheng Li
- Henan Key Laboratory of Chinese Medicine for Respiratory Disease, Henan University of Chinese Medicine, Zhengzhou 450046, Henan Province, China; Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases co-constructed by Henan province & Education Ministry of PR China, China; Department of Respiratory Diseases, the First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou 450000, China
| | - Peng Zhao
- Henan Key Laboratory of Chinese Medicine for Respiratory Disease, Henan University of Chinese Medicine, Zhengzhou 450046, Henan Province, China; Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases co-constructed by Henan province & Education Ministry of PR China, China; Academy of Chinese Medical Sciences, Henan University of Chinese Medicine, Zhengzhou 450046, Henan Province, China.
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16
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Lam M, Mansell A, Tate MD. Preclinical Mouse Model of Silicosis. Methods Mol Biol 2023; 2691:111-120. [PMID: 37355541 DOI: 10.1007/978-1-0716-3331-1_9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/26/2023]
Abstract
Silicosis is an untreatable occupational lung disease caused by chronic inhalation of crystalline silica. Cyclical release and reuptake of silica particles by macrophages and airway epithelial cells causes repeated tissue damage, characterized by widespread inflammation and progressive diffuse fibrosis. While inhalation is the main route of entry for silica particles in humans, most preclinical studies administer silica via the intratracheal route. In vivo mouse models of lung disease are valuable tools required to bridge the translational gap between in vitro cell culture and human disease. This chapter describes a mouse model of silicosis which mimics clinical features of human silicosis, as well as methods for intranasal instillation of silica and disease analysis. Lung tissue can be collected for histological assessment of silica particle distribution, inflammation, structural damage, and fibrosis in sections stained with hematoxylin and eosin or Masson's trichrome. This approach can be extended to other chronic fibrotic lung diseases where inhalation of small damaging particles such as pollutants causes irreversible disease.
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Affiliation(s)
- Maggie Lam
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, VIC, Australia
- Department of Molecular and Translational Sciences, Monash University, Clayton, VIC, Australia
| | - Ashley Mansell
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, VIC, Australia
- Department of Molecular and Translational Sciences, Monash University, Clayton, VIC, Australia
| | - Michelle D Tate
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, VIC, Australia.
- Department of Molecular and Translational Sciences, Monash University, Clayton, VIC, Australia.
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Ding M, Pei Y, Zhang C, Qi Y, Xia J, Hao C, Yao W. Exosomal miR-125a-5p regulates T lymphocyte subsets to promote silica-induced pulmonary fibrosis by targeting TRAF6. Ecotoxicol Environ Saf 2023; 249:114401. [PMID: 36508789 DOI: 10.1016/j.ecoenv.2022.114401] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 12/01/2022] [Accepted: 12/05/2022] [Indexed: 06/17/2023]
Abstract
Silicosis caused by long-term inhalation of crystalline silica during occupational activities seriously threatens the health of occupational populations. Imbalances in T helper 1(Th1), Th2, Th17, and regulatory T cells (Tregs) promote the development of pulmonary silicosis. Exosomes and their contents, especially microRNAs (miRNAs), represent a new type of intercellular signal transmission mediator related to various diseases including pulmonary fibrosis. However, whether exosomal miRNAs can affect the progression of silicosis by regulating T cell differentiation remains to be determined. To test this hypothesis, we established a miR-125a-5p antagomir mouse model and examined changes in miR-125a-5p levels and T cell subtypes. We found that miR-125a-5p levels were increased in lung tissues and serum exosomes in the silica group at 7 days and 28 days. Downregulation of miR-125a-5p attenuated α-smooth muscle actin (α-SMA), collagen I, fibronectin, p-p65, and p-inhibitor of nuclear factor kappa B (NF-κB) kinase (IKK) protein expression, while tumor necrosis factor receptor-associated factor 6 (TRAF6) and p-inhibitor of κBα (IKBα) expression were increased. MiR-125a-5p anta-miR treatment contributes to the maintenance of Th1/Th2 balance during the progression of pulmonary fibrosis. Our findings indicated that knockdown miR-125a-5p could regulate T lymphocyte subsets and significantly reduce pulmonary fibrosis by targeting TRAF6.
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Affiliation(s)
- Mingcui Ding
- Department of Occupational Health and Occupational Disease, School of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Yangqing Pei
- Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Chengpeng Zhang
- Department of Occupational Health and Occupational Disease, School of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Yuanmeng Qi
- Department of Occupational Health and Occupational Disease, School of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Jiarui Xia
- Department of Occupational Health and Occupational Disease, School of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Changfu Hao
- Department of child and Adolecence health, School of public health, Zhengzhou University, Zhengzhou 450001, Henan, China.
| | - Wu Yao
- Department of Occupational Health and Occupational Disease, School of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China.
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18
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Tian Y, Xia J, Yang G, Li C, Qi Y, Dai K, Wu C, Guo Y, Yao W, Hao C. A2aR inhibits fibrosis and the EMT process in silicosis by regulating Wnt/β-catenin pathway. Ecotoxicol Environ Saf 2023; 249:114410. [PMID: 36516619 DOI: 10.1016/j.ecoenv.2022.114410] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 11/18/2022] [Accepted: 12/08/2022] [Indexed: 06/17/2023]
Abstract
Silicosis, a disease characterized by diffuse fibrosis of the lung tissue, is caused by long-term inhalation of free silica (SiO2) dust in the occupational environment and is currently the most serious occupational diseases of pneumoconiosis. Several studies have suggested that alveolar type Ⅱ epithelial cells (AEC Ⅱ) undergo epithelial-mesenchymal transition (EMT) as one of the crucial components of silicosis in lung fibroblasts. A2aR can play a critical regulatory role in fibrosis-related diseases by modulating the Wnt/β-catenin pathway, but its function in the EMT process of silicosis has not been explained. In this study, an EMT model of A549 cells was established. The results revealed that A2aR expression is reduced in the EMT model. Furthermore, activation of A2aR or suppression of the Wnt/β-catenin pathway reversed the EMT process, while the opposite result was obtained by inhibiting A2aR. In addition, activation of A2aR in a mouse silicosis model inhibited the Wnt/β-catenin pathway and ameliorated the extent of silica-induced lung fibrosis in mice. To sum up, we uncovered that A2aR inhibits fibrosis and the EMT process in silicosis by regulating the Wnt/β-catenin pathway. Our study can provide an experimental basis for elucidating the role of A2aR in the development of silicosis and offer new ideas for further exploration of interventions for silicosis.
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Affiliation(s)
- Yangyang Tian
- Department of Occupational and Environment Health, School of Public Health, Zhengzhou University, No.100 Science Avenue5, Zhengzhou 450001, Henan Province, PR China
| | - Jiarui Xia
- Department of Occupational and Environment Health, School of Public Health, Zhengzhou University, No.100 Science Avenue5, Zhengzhou 450001, Henan Province, PR China
| | - Guo Yang
- Department of Occupational and Environment Health, School of Public Health, Zhengzhou University, No.100 Science Avenue5, Zhengzhou 450001, Henan Province, PR China
| | - Chao Li
- Department of Occupational and Environment Health, School of Public Health, Zhengzhou University, No.100 Science Avenue5, Zhengzhou 450001, Henan Province, PR China
| | - Yuanmeng Qi
- Department of Occupational and Environment Health, School of Public Health, Zhengzhou University, No.100 Science Avenue5, Zhengzhou 450001, Henan Province, PR China
| | - Kai Dai
- Department of Occupational and Environment Health, School of Public Health, Zhengzhou University, No.100 Science Avenue5, Zhengzhou 450001, Henan Province, PR China
| | - Chenchen Wu
- Department of Occupational and Environment Health, School of Public Health, Zhengzhou University, No.100 Science Avenue5, Zhengzhou 450001, Henan Province, PR China
| | - Yonghua Guo
- Department of Occupational and Environment Health, School of Public Health, Zhengzhou University, No.100 Science Avenue5, Zhengzhou 450001, Henan Province, PR China
| | - Wu Yao
- Department of Occupational and Environment Health, School of Public Health, Zhengzhou University, No.100 Science Avenue5, Zhengzhou 450001, Henan Province, PR China.
| | - Changfu Hao
- Department of Occupational and Environment Health, School of Public Health, Zhengzhou University, No.100 Science Avenue5, Zhengzhou 450001, Henan Province, PR China.
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19
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Jin F, Li Y, Wang X, Yang X, Li T, Xu H, Wei Z, Liu H. Effect of Sex Differences in Silicotic Mice. Int J Mol Sci 2022; 23:ijms232214203. [PMID: 36430681 PMCID: PMC9697950 DOI: 10.3390/ijms232214203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 11/08/2022] [Accepted: 11/15/2022] [Indexed: 11/18/2022] Open
Abstract
Mechanisms of silicosis, caused by the inhalation of silica are still unclear, and the effect of sex on silicosis has rarely been reported. The purpose of this study was to investigate whether sex affects the silicotic lesions and the progressive fibrotic responses in silicosis. Our study showed that sex had no significant effect on the area of silicon nodules and the collagen deposition after a one-time bronchial perfusion of silica. Immunohistochemical staining showed that CD68 and the transforming growth factor-β1 (TGF-β1) were positive in male and female silicotic mice. In addition, the western blot results showed that the fibrosis-related factors type I collagen (COL I), α-smooth muscle actin (α-SMA), vimentin, TGF-β1, p-SMAD2/3, inflammatory-related factors interleukin 6 (IL 6), interleukin 1β (IL 1β), and senescence-related factors p16 and p21 were up-regulated in silicotic mice and there was no difference between female or male mice exposed to silica. The expression of TGF-β1, p-SMAD2/3, p16, and p21 were downregulated in the early stage of female silicotic mice, compared to the males. Thus, despite differences in the expression of certain factors, there was no overall difference in the progressive fibrosis between female and male mice in silicosis. These results thus provide a new perspective for studying the pathological development of silicosis.
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Affiliation(s)
| | | | | | | | | | | | - Zhongqiu Wei
- Correspondence: (Z.W.); (H.L.); Tel.: +86-0315-8816236 (Z.W.); +86-139-3349-9300 (H.L.)
| | - Heliang Liu
- Correspondence: (Z.W.); (H.L.); Tel.: +86-0315-8816236 (Z.W.); +86-139-3349-9300 (H.L.)
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20
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Li G, Xu Q, Cheng D, Sun W, Liu Y, Ma D, Wang Y, Zhou S, Ni C. Caveolin-1 and Its Functional Peptide CSP7 Affect Silica-Induced Pulmonary Fibrosis by Regulating Fibroblast Glutaminolysis. Toxicol Sci 2022; 190:41-53. [PMID: 36053221 DOI: 10.1093/toxsci/kfac089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Exposure to silica is a cause of pulmonary fibrosis disease termed silicosis, which leads to respiratory failure and ultimately death. However, what drives fibrosis is not fully elucidated and therapeutic options remain limited. Our previous RNA-sequencing analysis showed that the expression of caveolin-1 (CAV1) was downregulated in silica-inhaled mouse lung tissues. Here, we not only verified that CAV1 was decreased in silica-induced fibrotic mouse lung tissues in both messenger RNA and protein levels, but also found that CSP7, a functional peptide of CAV1, could attenuate pulmonary fibrosis in vivo. Further in vitro experiments revealed that CAV1 reduced the expression of Yes-associated protein 1(YAP1) and affected its nuclear translocation in fibroblasts. In addition, Glutaminase 1 (GLS1), a key regulator of glutaminolysis, was identified to be a downstream effector of YAP1. CAV1 could suppress the activity of YAP1 to decrease the transcription of GLS1, thereby inhibiting fibroblast activation. Taken together, our results demonstrated that CAV1 and its functional peptide CSP7 may be potential molecules or drugs for the prevention and intervention of silicosis.
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Affiliation(s)
- Guanru Li
- Key Laboratory of Modern Toxicology of Ministry of Education, Department of Occupational Medical and Environmental Health, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Qi Xu
- Department of Occupational Medical and Environmental Health, School of Public Health and Management, Binzhou Medical University, Yantai, Shandong 264003, China
| | - Demin Cheng
- Key Laboratory of Modern Toxicology of Ministry of Education, Department of Occupational Medical and Environmental Health, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Wenqing Sun
- Key Laboratory of Modern Toxicology of Ministry of Education, Department of Occupational Medical and Environmental Health, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Yi Liu
- Gusu School, Nanjing Medical University, Nanjing 211166, China
| | - Dongyu Ma
- Key Laboratory of Modern Toxicology of Ministry of Education, Department of Occupational Medical and Environmental Health, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Yue Wang
- Key Laboratory of Modern Toxicology of Ministry of Education, Department of Occupational Medical and Environmental Health, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Siyun Zhou
- Key Laboratory of Modern Toxicology of Ministry of Education, Department of Occupational Medical and Environmental Health, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Chunhui Ni
- Key Laboratory of Modern Toxicology of Ministry of Education, Department of Occupational Medical and Environmental Health, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China
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21
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Peng Z, Duan M, Zhao K, Tang Y, Liang F. RAB20 deficiency promotes the development of silicosis via NLRP3 inflammasome. Front Immunol 2022; 13:967299. [PMID: 36131930 PMCID: PMC9484360 DOI: 10.3389/fimmu.2022.967299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Accepted: 08/08/2022] [Indexed: 11/13/2022] Open
Abstract
Silicosis is a worldwide serious occupational disease that is caused by inhalation of silica crystals. However, little is known about the pathogenesis mechanism of silicosis. We performed single-cell sequencing in bronchoalveolar lavage fluid (BALF) from mine workers with silicosis and their co-workers who did not develop silicosis, and found that the RAB20 deficiency in monocytes/macrophages was strongly linked to the development of silicosis. In the silicosis murine model, RAB20 knockout markedly enhanced the silica crystal-induced pulmonary interstitial fibrosis and respiratory dysfunction. Moreover, this process is strongly accompanied by IL-1β release and NLRP3 activation. In vitro, RAB20 knockout macrophages aggravated the crystalline silica-induced IL-1β release and NLRP3 inflammasome activation partly by increased ratio of crystalline silica/phagosomal areas/volumes to induce lysosomal injury. Thus, these findings provide novel molecular insights into the intricate mechanisms underlying lysosomal protein RAB20 that are necessary for environmental irritant-mediated innate immunity, and shed light on the future development of novel therapy target for the prevention of silicosis.
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Affiliation(s)
- Zhouyangfan Peng
- Department of Hematology and Critical Care Medicine, The 3rd Xiangya Hospital, Central South University, Changsha, China
| | - Mingwu Duan
- Department of Hematology and Critical Care Medicine, The 3rd Xiangya Hospital, Central South University, Changsha, China
| | - Kai Zhao
- Department of Hematology and Critical Care Medicine, The 3rd Xiangya Hospital, Central South University, Changsha, China
| | - Yiting Tang
- Department of Physiology, School of Basic Medical Science, Central South University, Changsha, China
| | - Fang Liang
- Department of Hematology and Critical Care Medicine, The 3rd Xiangya Hospital, Central South University, Changsha, China
- *Correspondence: Fang Liang,
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22
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Yu SW, Li A, Song YG. [Analysis of the pulmonary function characteristics and associated factors in silicosis patients with progressive massive fibrosis]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2021; 39:831-835. [PMID: 34886642 DOI: 10.3760/cma.j.cn121094-20210507-00246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Objective: To investigate the characteristics of and associated risk factors for pulmonary dysfunction in silicosis patients with progressive massive fibrosis (PMF) . Methods: In-patients with PMF treated in the Department of Occupational Medicine and Toxicology in Beijing Chao-Yang Hospital, Capital Medical University from June 2014 to October 2020 were enrolled in this study. Based on their pulmonary ventilation function, the patients were divided into normal ventilation group, obstructive ventilation dysfunction group, restrictive ventilation dysfunction group, and mixed ventilation dysfunction group. The location and area of the large opacity and the grade of emphysema were evaluated by high-resolution CT (HRCT) of the chest. Based on the location, the large opacity was classified into central type, peripheral type, and mixed type. Results: A total of 115 silicosis patients with PMF were enrolled, with 85 (73.91%) having different types of pulmonary dysfunction, including 36 cases (31.30%) in the obstructive ventilation dysfunction group, 9 cases (7.83%) in the restrictive ventilation dysfunction group and 40 cases (34.78%) in the mixed ventilation dysfunction group. As for the location of the large opacity, 41 cases (35.65%) were central type, 52 cases (45.22%) were peripheral type, and 22 cases (19.13%) were mixed type. Logistic regression analysis showed that the central large opacity and grade 3-4 emphysema were risk factors for obstructive ventilation dysfunction (OR=52.179, 5.500, P<0.05) , class C large opacity was the risk factor for restrictive ventilation dysfunction (OR=33.146, P<0.05) , class B, class C large opacity and central large opacity were the risk factors for mixed ventilation dysfunction (OR=6.414, 11.561, 19.600, P<0.05) . Conclusion: In silicosis patients with PMF, the incidence rate of pulmonary ventilation dysfunction is higher, mainly obstructive and mixed ventilation dysfunction. The area and location of large opacity are associated with the incidence and types of pulmonary ventilation dysfunction.
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Affiliation(s)
- S W Yu
- Department of Occupational Medicine and Toxicology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China
| | - A Li
- Department of Occupational Medicine and Toxicology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China
| | - Y G Song
- Department of Occupational Medicine and Toxicology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China
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23
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Li B, Mu M, Sun Q, Cao H, Liu Q, Liu J, Zhang J, Xu K, Hu D, Tao X, Wang J. A suitable silicosis mouse model was constructed by repeated inhalation of silica dust via nose. Toxicol Lett 2021; 353:1-12. [PMID: 34626813 DOI: 10.1016/j.toxlet.2021.09.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 09/14/2021] [Accepted: 09/30/2021] [Indexed: 11/18/2022]
Abstract
Silicosis as the serious occupational disease is highly necessary to construct a suitable mouse model for disclosing mechanism of occurrence and development in this disease. Here, the volume-effect relationship and volume-based survival curves in mice who inhaled silica suspension intranasally were analyzed. Notable, the optimal volume 80 μl repeated-inhalation by nose to silica suspension in the inbred mouse C57BL/6 J with the highest susceptibility to silicosis led to a great entrance into the lung and a high survival rate after instillation. After repeated-exposure to 20 mg/mL, 80 μl silica for 16 days and then fed without silica exposure until 31 days, weight of mice showed a trend of first decrease and then recover. Moreover, the degree of pulmonary inflammation and fibrosis in mice were analyzed by pathological and immunohistochemistry staining. Transforming growth factor-beta (TGF-β), smooth muscle alpha-actin (α-SMA) and collagen type-I (collagen I, Col-I) were significantly increased in the silica-exposed mouse lung at post-exposure day 16 compared with the controls. Sirius red stain and Micro-CT analysis showed that lung fibrosis formed at post-exposure day 31. This study highlights the critical importance of perfusion volume and repeated nasal drops in inducing inflammatory response and pulmonary fibrosis in silicosis.
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Affiliation(s)
- Bing Li
- School of Medicine, Department of Medical Frontier Experimental Center, Anhui University of Science and Technology, China.
| | - Min Mu
- Key Laboratory of Industrial Dust Control and Occupational Health of the Ministry of Education, Anhui University of Science and Technology, China; Key Laboratory of Industrial Dust Deep Reduction and Occupational Health and Safety, Anhui University of Science and Technology of Anhui Higher Education Institutes, Anhui University of Science and Technology, China; School of Medicine, Department of Medical Frontier Experimental Center, Anhui University of Science and Technology, China; Anhui Province Engineering Laboratory of Occupational Health and Safety, Anhui University of Science and Technology, China.
| | - Qixian Sun
- School of Medicine, Department of Medical Frontier Experimental Center, Anhui University of Science and Technology, China
| | - Hangbing Cao
- School of Medicine, Department of Medical Frontier Experimental Center, Anhui University of Science and Technology, China
| | - Qiang Liu
- School of Medicine, Department of Medical Frontier Experimental Center, Anhui University of Science and Technology, China
| | - Jiaxin Liu
- School of Medicine, Department of Medical Frontier Experimental Center, Anhui University of Science and Technology, China
| | - Jinfeng Zhang
- Key Laboratory of Industrial Dust Control and Occupational Health of the Ministry of Education, Anhui University of Science and Technology, China; Key Laboratory of Industrial Dust Deep Reduction and Occupational Health and Safety, Anhui University of Science and Technology of Anhui Higher Education Institutes, Anhui University of Science and Technology, China; School of Medicine, Department of Medical Frontier Experimental Center, Anhui University of Science and Technology, China; Anhui Province Engineering Laboratory of Occupational Health and Safety, Anhui University of Science and Technology, China
| | - Keyi Xu
- Key Laboratory of Industrial Dust Control and Occupational Health of the Ministry of Education, Anhui University of Science and Technology, China; Key Laboratory of Industrial Dust Deep Reduction and Occupational Health and Safety, Anhui University of Science and Technology of Anhui Higher Education Institutes, Anhui University of Science and Technology, China; School of Medicine, Department of Medical Frontier Experimental Center, Anhui University of Science and Technology, China; Anhui Province Engineering Laboratory of Occupational Health and Safety, Anhui University of Science and Technology, China
| | - Dong Hu
- Key Laboratory of Industrial Dust Control and Occupational Health of the Ministry of Education, Anhui University of Science and Technology, China; Key Laboratory of Industrial Dust Deep Reduction and Occupational Health and Safety, Anhui University of Science and Technology of Anhui Higher Education Institutes, Anhui University of Science and Technology, China; School of Medicine, Department of Medical Frontier Experimental Center, Anhui University of Science and Technology, China; Anhui Province Engineering Laboratory of Occupational Health and Safety, Anhui University of Science and Technology, China
| | - Xinrong Tao
- Key Laboratory of Industrial Dust Control and Occupational Health of the Ministry of Education, Anhui University of Science and Technology, China; Key Laboratory of Industrial Dust Deep Reduction and Occupational Health and Safety, Anhui University of Science and Technology of Anhui Higher Education Institutes, Anhui University of Science and Technology, China; School of Medicine, Department of Medical Frontier Experimental Center, Anhui University of Science and Technology, China; Anhui Province Engineering Laboratory of Occupational Health and Safety, Anhui University of Science and Technology, China.
| | - Jianhua Wang
- Key Laboratory of Industrial Dust Control and Occupational Health of the Ministry of Education, Anhui University of Science and Technology, China; Key Laboratory of Industrial Dust Deep Reduction and Occupational Health and Safety, Anhui University of Science and Technology of Anhui Higher Education Institutes, Anhui University of Science and Technology, China; School of Medicine, Department of Medical Frontier Experimental Center, Anhui University of Science and Technology, China; Anhui Province Engineering Laboratory of Occupational Health and Safety, Anhui University of Science and Technology, China; Cancer Institute, Fudan University Shanghai Cancer Center, Fudan University, Shanghai, China.
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24
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Yuan J, Li P, Pan H, Xu Q, Xu T, Li Y, Wei D, Mo Y, Zhang Q, Chen J, Ni C. miR-770-5p inhibits the activation of pulmonary fibroblasts and silica-induced pulmonary fibrosis through targeting TGFBR1. Ecotoxicol Environ Saf 2021; 220:112372. [PMID: 34082245 DOI: 10.1016/j.ecoenv.2021.112372] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 05/13/2021] [Accepted: 05/23/2021] [Indexed: 06/12/2023]
Abstract
Silicosis is a devastating interstitial lung disease arising from long-term exposure to inhalable silica. Regrettably, no therapy currently can effectively reverse the silica-induced fibrotic lesion. Emerging evidence has indicated that the dysregulation of microRNAs is involved in silica-induced pulmonary fibrosis. The aim of this study is to explore the expression pattern and underlying mechanisms of miR-770-5p in silica-induced pulmonary fibrosis. Consistent with our previous miRNA microarray analysis, the results of qRT-PCR showed that miR-770-5p expression was downregulated in silica-induced pulmonary fibrosis in humans and animal models. Administration of miR-770-5p agomir significantly reduced the fibrotic lesions in the lungs of mice exposed to silica dust. MiR-770-5p also exhibited a dramatic reduction in TGF-β1-activated human pulmonary fibroblasts (MRC-5). Transfection of miR-770-5p mimics significantly decreased the viability, migration ability, and S/G0 phase distribution, as well as the expression of fibronectin, collagen I, and α-SMA in TGF-β1-treated MRC-5 cells. Transforming growth factor-β receptor 1 (TGFBR1) was confirmed as a direct target of regulation by miR-770-5p. The expression of TGFBR1 was significantly increased in pulmonary fibrosis. Knockdown of TGFBR1 blocked the transduction of the TGF-β1 signaling pathway and attenuated the activation of MRC-5 cells, while overexpression of TGFBR1 effectively restored the activation of MRC-5 cells inhibited by miR-770-5p. Together, our results demonstrated that miR-770-5p exerted an anti-fibrotic effect in silica-induced pulmonary fibrosis by targeting TGFBR1. Targeting miR-770-5p might provide a new therapeutic strategy to prevent the abnormal activation of pulmonary fibroblasts in silicosis.
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Affiliation(s)
- Jiali Yuan
- Department of Occupational Medicine and Environmental Health, Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 210029, China
| | - Ping Li
- Department of Occupational Medicine and Environmental Health, Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 210029, China
| | - Honghong Pan
- Department of Occupational Medicine and Environmental Health, Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 210029, China
| | - Qi Xu
- Department of Occupational Medicine and Environmental Health, Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 210029, China
| | - Tiantian Xu
- Department of Occupational Medicine and Environmental Health, Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 210029, China
| | - Yan Li
- Department of Occupational Medicine and Environmental Health, Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 210029, China
| | - Dong Wei
- The Transplant Center, The Affiliated Wuxi People's Hospital of Nanjing Medical University, Jiangsu 214003, China
| | - Yiqun Mo
- Department of Environmental and Occupational Health Sciences, School of Public Health and Information Sciences, University of Louisville, Louisville, KY 40202, USA
| | - Qunwei Zhang
- Department of Environmental and Occupational Health Sciences, School of Public Health and Information Sciences, University of Louisville, Louisville, KY 40202, USA
| | - Jingyu Chen
- The Transplant Center, The Affiliated Wuxi People's Hospital of Nanjing Medical University, Jiangsu 214003, China
| | - Chunhui Ni
- Department of Occupational Medicine and Environmental Health, Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 210029, China.
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25
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Pang X, Shao L, Nie X, Yan H, Li C, Yeo AJ, Lavin MF, Xia Q, Shao H, Yu G, Jia Q, Peng C. Emodin attenuates silica-induced lung injury by inhibition of inflammation, apoptosis and epithelial-mesenchymal transition. Int Immunopharmacol 2021; 91:107277. [PMID: 33352442 DOI: 10.1016/j.intimp.2020.107277] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Revised: 11/28/2020] [Accepted: 12/02/2020] [Indexed: 01/24/2023]
Abstract
Silicosis is a fatal pulmonary disease caused by the inhalation of silica dust, and characterized by inflammation and fibrosis of the lung, with no effective treatment to date. Here we investigate the effect of emodin, an anthraquinone derivative isolated from rhubarb using a mouse silicosis model and in vitro cultured human macrophages and alveolar epithelial cells. Results from histological examination indicated that emodin reduced the degree of alveolitis and fibrosis in the lungs of mice exposed to silica particles. We also demonstrated that emodin effectively inhibited the phosphorylation of Smad3 and NF-κB and reduced the levels of inflammatory factors in the lung tissue of mice treated with silica particles. In addition, we found that emodin inhibited apoptosis and demonstrated an anti-fibrotic effect by down-regulating the pro-apoptotic protein Bax and up-regulating the anti-apoptotic protein Bcl-2. Furthermore, emodin increased E-cadherin levels, reduced the expression of Vimentin, α-SMA and Col-I, as well as pro-inflammatory factors TGF-β1, TNF-α and IL-1β in vivo and in vitro. These results suggested that emodin can regulate epithelial-mesenchymal transition (EMT) through the inhibition of the TGF-β1/Smad3 signaling pathway and the NF-κB signaling pathway to prevent alveolar inflammation and apoptotic process. Overall, this study showed that emodin can alleviate pulmonary fibrosis in silicosis through regulating the inflammatory response and fibrotic process at multiple levels.
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Affiliation(s)
- Xinru Pang
- Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, Shandong, China
| | - Linlin Shao
- Shandong Provincial Hospital Affiliated to Shandong First Medical University, Ji'nan, Shandong, China
| | - Xiaojuan Nie
- Shandong Provincial Hospital Affiliated to Shandong First Medical University, Ji'nan, Shandong, China
| | - Haiyue Yan
- Shandong Institute of Scientific and Technical Information
| | - Chao Li
- Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, Shandong, China
| | - Abrey J Yeo
- Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, Shandong, China; University of Queensland Centre for Clinical Research (UQCCR), Brisbane, Queensland, Australia
| | - Martin F Lavin
- Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, Shandong, China; University of Queensland Centre for Clinical Research (UQCCR), Brisbane, Queensland, Australia
| | - Qing Xia
- The University of Queensland, Queensland Alliance for Environmental Health Sciences (QAEHS), Brisbane, Queensland, Australia
| | - Hua Shao
- Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, Shandong, China
| | - Gongchang Yu
- Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, Shandong, China.
| | - Qiang Jia
- Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, Shandong, China.
| | - Cheng Peng
- Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, Shandong, China; The University of Queensland, Queensland Alliance for Environmental Health Sciences (QAEHS), Brisbane, Queensland, Australia.
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26
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Sager TM, Umbright CM, Mustafa GM, Yanamala N, Leonard HD, McKinney WG, Kashon ML, Joseph P. Tobacco Smoke Exposure Exacerbated Crystalline Silica-Induced Lung Toxicity in Rats. Toxicol Sci 2020; 178:375-390. [PMID: 32976597 PMCID: PMC7825013 DOI: 10.1093/toxsci/kfaa146] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Smoking may modify the lung response to silica exposure including cancer and silicosis. Nevertheless, the precise role of exposure to tobacco smoke (TS) on the lung response to crystalline silica (CS) exposure and the underlying mechanisms need further clarification. The objectives of the present study were to determine the role of TS on lung response to CS exposure and the underlying mechanism(s). Male Fischer 344 rats were exposed by inhalation to air, CS (15 mg/m3, 6 h/day, 5 days), TS (80 mg/m3, 3 h/day, twice weekly, 6 months), or CS (15 mg/m3, 6 h/day, 5 days) followed by TS (80 mg/m3, 3 h/day, twice weekly, 6 months). The rats were euthanized 6 months and 3 weeks following initiation of the first exposure and the lung response was assessed. Silica exposure resulted in significant lung toxicity as evidenced by lung histological changes, enhanced neutrophil infiltration, increased lactate dehydrogenase levels, enhanced oxidant production, and increased cytokine levels. The TS exposure alone had only a minimal effect on these toxicity parameters. However, the combined exposure to TS and CS exacerbated the lung response, compared with TS or CS exposure alone. Global gene expression changes in the lungs correlated with the lung toxicity severity. Bioinformatic analysis of the gene expression data demonstrated significant enrichment in functions, pathways, and networks relevant to the response to CS exposure which correlated with the lung toxicity detected. Collectively our data demonstrated an exacerbation of CS-induced lung toxicity by TS exposure and the molecular mechanisms underlying the exacerbated toxicity.
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Affiliation(s)
- Tina M Sager
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health (NIOSH), Morgantown, West Virginia 26505
| | - Christina M Umbright
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health (NIOSH), Morgantown, West Virginia 26505
| | - Gul Mehnaz Mustafa
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health (NIOSH), Morgantown, West Virginia 26505
| | - Naveena Yanamala
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health (NIOSH), Morgantown, West Virginia 26505
| | - Howard D Leonard
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health (NIOSH), Morgantown, West Virginia 26505
| | - Walter G McKinney
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health (NIOSH), Morgantown, West Virginia 26505
| | - Michael L Kashon
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health (NIOSH), Morgantown, West Virginia 26505
| | - Pius Joseph
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health (NIOSH), Morgantown, West Virginia 26505
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Zhu Z, Li Q, Xu C, Zhao J, Li S, Wang Y, Tian L. Sodium tanshinone IIA sulfonate attenuates silica-induced pulmonary fibrosis in rats via activation of the Nrf2 and thioredoxin system. Environ Toxicol Pharmacol 2020; 80:103461. [PMID: 32738294 DOI: 10.1016/j.etap.2020.103461] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 07/26/2020] [Accepted: 07/27/2020] [Indexed: 06/11/2023]
Abstract
Silicosis is characterized by pulmonary fibrosis due to long-term inhalation of silica particles. Although the cause of this serious disease is known, its pathogenesis remains unclear and there are currently no specific treatments. Recent studies have shown that the anti-oxidant transcription factor Nrf2 is expressed at reduced levels in fibrotic foci, which may be related to disease progression. However, the molecular mechanisms by which this might occur have yet to be elucidated. Sodium tanshinone IIA sulfonate (STS), an extract of Salvia miltiorrhiza, is used in traditional Chinese medicine in the treatment of coronary heart disease. STS has been shown to play a strong anti-oxidative role in various organs. Here, we employed a rat model to explore the effects of STS on oxidative stress and the progression of fibrosis in silicosis. STS significantly reduced collagen deposition in the lungs, thereby antagonising silicosis. Immunohistochemical and immunofluorescence staining showed that Nrf2 was differentially expressed in lung cells during silica induced fibrosis, and chromatin immunoprecipitation-sequencing experiments demonstrated that Nrf2 promoted the expression of the antioxidant proteins thioredoxin and thioredoxin reductase. Our results suggest that the anti-fibrotic effects of STS may be related to upregulation of Nrf2 nuclear expression, especially in fibrotic lesions, and the promotion of thioredoxin and thioredoxin reductase expression. Our findings may open up new avenues for the development of STS as a treatment for silicosis.
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Affiliation(s)
- Zhonghui Zhu
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Qiuyue Li
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Chunjie Xu
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Jing Zhao
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Siling Li
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Yan Wang
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China.
| | - Lin Tian
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China.
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Yang P, Song R, Li N, Sun K, Shi F, Liu H, Shen F, Jiang S, Zhang L, Jin Y. Silica dust exposure induces autophagy in alveolar macrophages through switching Beclin1 affinity from Bcl-2 to PIK3C3. Environ Toxicol 2020; 35:758-767. [PMID: 32061152 DOI: 10.1002/tox.22910] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2019] [Revised: 01/31/2020] [Accepted: 02/04/2020] [Indexed: 06/10/2023]
Abstract
Increased deposition of silica dust in pulmonary interstitial tissues leads to silicosis, in which autophagy plays a defensive role in silica dust-associated stress response and cell death. Our previous studies revealed that silica dust exposure contributed to autophagy in pulmonary macrophages in vivo, while the specific regulatory mechanism is still unclear. This study aimed to figure out the regulatory mechanism as well as the role of autophagy in the pathogenesis of experimental silicosis. We used 3-methyladenine (3-MA) and ABT-737 to suppress the expression of phosphatidylinositol 3-kinase catalytic subunit type 3 (PIK3C3) and B cell leukemia/lymphoma 2 (Bcl-2), two critical initiators of autophagy, and detected and evaluated the autophagy in NR8383 cells with or without silica dust exposure. We found that exposure of silica dust increased autophagy in NR8383 cells and elevated the expression of Beclin1 and PIK3C3, but it reduced the expression of Bcl-2. The relationship among Beclin1, PIK3C3, and Bcl-2 were then investigated using immunoprecipitation analysis, and we found that suppression of PIK3C3 and/or Bcl-2 using 3-MA and/or ABT-737 could alter the autophagy induced by silica dust in NR8383 cells, and the complexes of Beclin1/PIK3C3 and Beclin1/Bcl-2 were both downregulated, which may be that inhibition of PIK3C3 and Bcl-2 altered the affinity of Beclin1 with PIK3C3 and Bcl-2 and lead to the silence of PIK3C3 signaling. These findings indicate that silica dust exposure induces autophagy via changing the connectivity of Beclin1 from Bcl-2 to PIK3C3.
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Affiliation(s)
- Pan Yang
- School of Public Health, North China University of Science and Technology, Hebei, China
| | - Ruirui Song
- Health Education Department, Center for Disease Control and Prevention, Tianjin, China
| | - Ning Li
- School of Public Health, North China University of Science and Technology, Hebei, China
| | - Kun Sun
- School of Public Health, North China University of Science and Technology, Hebei, China
| | - Fan Shi
- School of Public Health, North China University of Science and Technology, Hebei, China
| | - Heliang Liu
- School of Public Health, North China University of Science and Technology, Hebei, China
| | - Fuhai Shen
- School of Public Health, North China University of Science and Technology, Hebei, China
| | - Shoufang Jiang
- School of Public Health, North China University of Science and Technology, Hebei, China
| | - Lin Zhang
- Key Laboratory of Birth Regulation and Control Technology of National Health Commission of China, Shandong Provincial Maternal and Child Health Care Hospital Affiliated to Shandong University, Jinan, China
| | - Yulan Jin
- School of Public Health, North China University of Science and Technology, Hebei, China
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Nakano-Narusawa Y, Yokohira M, Yamakawa K, Saoo K, Imaida K, Matsuda Y. Single Intratracheal Quartz Instillation Induced Chronic Inflammation and Tumourigenesis in Rat Lungs. Sci Rep 2020; 10:6647. [PMID: 32313071 PMCID: PMC7170867 DOI: 10.1038/s41598-020-63667-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Accepted: 04/01/2020] [Indexed: 12/11/2022] Open
Abstract
Crystalline silica (quartz) is known to induce silicosis and cancer in the lungs. In the present study, we investigated the relationship between quartz-induced chronic inflammation and lung carcinogenesis in rat lungs after a single exposure to quartz. F344 rats were treated with a single intratracheal instillation (i.t.) of quartz (4 mg/rat), and control rats were treated with a single i.t. of saline. After 52 or 96 weeks, the animals were sacrificed, and the lungs and other organs were used for analyses. Quartz particles were observed in the lungs of all quartz-treated rats. According to our scoring system, the lungs of rats treated with quartz had higher scores for infiltration of lymphocytes, macrophages and neutrophils, oedema, fibrosis, and granuloma than the lungs of control rats. After 96 weeks, the quartz-treated rats had higher incidences of adenoma (85.7%) and adenocarcinoma (81.0%) than control rats (20% and 20%, respectively). Quartz-treated and control rats did not show lung neoplastic lesions at 52 weeks after treatment. The number of lung neoplastic lesions per rat positively correlated with the degree of macrophage and lymphocyte infiltration, oedema, fibrosis, and lymph follicle formation around the bronchioles. In conclusion, single i.t. of quartz may induce lung cancer in rat along with chronic inflammation.
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Affiliation(s)
- Yuko Nakano-Narusawa
- Oncology Pathology, Department of Pathology and Host-Defence, Faculty of Medicine, Kagawa University, Kagawa, 761-0793, Japan
| | - Masanao Yokohira
- Oncology Pathology, Department of Pathology and Host-Defence, Faculty of Medicine, Kagawa University, Kagawa, 761-0793, Japan
| | - Keiko Yamakawa
- Oncology Pathology, Department of Pathology and Host-Defence, Faculty of Medicine, Kagawa University, Kagawa, 761-0793, Japan
| | - Kousuke Saoo
- Oncology Pathology, Department of Pathology and Host-Defence, Faculty of Medicine, Kagawa University, Kagawa, 761-0793, Japan
- Kaisei General Hospital, Kagawa, 762-0007, Japan
| | - Katsumi Imaida
- Oncology Pathology, Department of Pathology and Host-Defence, Faculty of Medicine, Kagawa University, Kagawa, 761-0793, Japan.
| | - Yoko Matsuda
- Oncology Pathology, Department of Pathology and Host-Defence, Faculty of Medicine, Kagawa University, Kagawa, 761-0793, Japan.
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30
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Zhao Y, Hao C, Bao L, Wang D, Li Y, Qu Y, Ding M, Zhao A, Yao W. Silica particles disorganize the polarization of pulmonary macrophages in mice. Ecotoxicol Environ Saf 2020; 193:110364. [PMID: 32114243 DOI: 10.1016/j.ecoenv.2020.110364] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 02/19/2020] [Accepted: 02/21/2020] [Indexed: 06/10/2023]
Abstract
Silicosis is a fatal fibrotic lung disease caused by long-term silica particle exposure, in which pulmonary macrophages play an important role. However, the relationship between macrophage polarization and silicosis remains unclear. We established an experimental silicosis mouse model to investigate macrophage polarization during silicosis development. C57BL/c mice were exposed to silica by intra-tracheal instillation and sacrificed at different time points. Lung tissues and bronchoalveolar lavage fluid were collected for flow cytometry, quantitative reverse transcription polymerase chain reaction, enzyme-linked immunosorbent assays, western blotting, and histology examinations. The polarization of pulmonary macrophages was dysregulated during silicosis development. In the early stage of silicosis, M1 macrophages were induced and played a leading role in eliciting inflammatory; in the late stage, M2 macrophages were induced to promote tissue repair. Levels of several cytokines in lung tissue microenvironment changed with macrophage polarization. Inflammatory cytokines such as tumor necrosis factor-α and interleukin (IL)-1β and IL-6 were upregulated in the inflammation stage, while the anti-inflammatory cytokine IL-10 was upregulated in the fibrosis stage. Furthermore, we found that STAT (signal transducer and activator of transcription) and IRF (interferon regulatory factor) signaling pathway were involved in the regulation of macrophage polarization in silicosis. In summary, macrophage polarization is closely related to the occurrence and development of silicosis and may be a key point for further elucidating silicosis pathogenesis.
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Affiliation(s)
- Youliang Zhao
- Department of Occupational Health and Occupational Disease, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - Changfu Hao
- Department of Occupational Health and Occupational Disease, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - Lei Bao
- School of Public Health, Hebei Medical University, Shijiazhuang, Hebei, PR China
| | - Di Wang
- Department of Occupational Health and Occupational Disease, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - Yiping Li
- Department of Occupational Health and Occupational Disease, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - Yaqian Qu
- Department of Occupational Health and Occupational Disease, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - Mingcui Ding
- Department of Occupational Health and Occupational Disease, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - Ahui Zhao
- Department of Occupational Health and Occupational Disease, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - Wu Yao
- Department of Occupational Health and Occupational Disease, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China.
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Zhu Y, Yao J, Duan Y, Xu H, Cheng Q, Gao X, Li S, Yang F, Liu H, Yuan J. Protein Expression Profile in Rat Silicosis Model Reveals Upregulation of PTPN2 and Its Inhibitory Effect on Epithelial-Mesenchymal Transition by Dephosphorylation of STAT3. Int J Mol Sci 2020; 21:ijms21041189. [PMID: 32054021 PMCID: PMC7072761 DOI: 10.3390/ijms21041189] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 02/07/2020] [Accepted: 02/09/2020] [Indexed: 12/16/2022] Open
Abstract
Silicosis is a chronic occupational lung disease caused by long-term inhalation of crystalline silica particulates. We created a rat model that closely approximates the exposure and development of silicosis in humans. Isobaric tags for relative and absolute quantitation (iTRAQ) technologies we used to identify proteins differentially expressed in activated rat lung tissue. We constructed three lentiviral knockdown vectors and an overexpression vector for the protein tyrosine phosphatase non-receptor type 2 (PTPN2) gene to achieve stable long-term expression. A total of 471 proteins were differentially expressed in the silicosis group compared with controls. Twenty upregulated, and eight downregulated proteins exhibited a ≥1.5-fold change relative to controls. We next found that the PTPN2, Factor B, and VRK1 concentrations in silicotic rats silicosis and SiO2-stimulated MLE-12 cells were significantly higher than control groups. More importantly, we found that overexpression of PTPN2 simultaneously decreased the expression of phospho–signal transducer and activator of transcription 3 (p-STAT3) and Vimentin, while increasing E-cadherin expression. The opposite pattern was observed for PTPN2-gene silencing. We identified three proteins with substantially enhanced expression in silicosis. Our study also showed that PTPN2 can inhibit epithelial-mesenchymal transition by dephosphorylating STAT3 in silicosis fibrosis.
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Ferreira TPT, Lima JGME, Farias-Filho FA, Jannini de Sá YAP, de Arantes ACS, Guimarães FV, Carvalho VDF, Hogaboam C, Wallace J, Martins MA, Silva PMRE. Intranasal Flunisolide Suppresses Pathological Alterations Caused by Silica Particles in the Lungs of Mice. Front Endocrinol (Lausanne) 2020; 11:388. [PMID: 32625168 PMCID: PMC7311565 DOI: 10.3389/fendo.2020.00388] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Accepted: 05/15/2020] [Indexed: 12/19/2022] Open
Abstract
Silicosis is an occupational disease triggered by the inhalation of fine particles of crystalline silica and characterized by inflammation and scarring in the form of nodular lesions in the lungs. In spite of the therapeutic arsenal currently available, there is no specific treatment for the disease. Flunisolide is a potent corticosteroid shown to be effective for controlling chronic lung inflammatory diseases. In this study, the effect of flunisolide on silica-induced lung pathological changes in mice was investigated. Swiss-Webster mice were injected intranasally with silica particles and further treated with flunisolide from day 21 to 27 post-silica challenge. Lung function was assessed by whole body invasive plethysmography. Granuloma formation was evaluated morphometrically, collagen deposition by Picrus sirius staining and quantitated by Sircol. Chemokines and cytokines were evaluated using enzyme-linked immunosorbent assay. The sensitivity of lung fibroblasts was also examined in in vitro assays. Silica challenge led to increased leukocyte numbers (mononuclear cells and neutrophils) as well as production of the chemokine KC/CXCL-1 and the cytokines TNF-α and TGF-β in the bronchoalveolar lavage. These alterations paralleled to progressive granuloma formation, collagen deposition and impairment of lung function. Therapeutic administration of intranasal flunisolide inhibited granuloma and fibrotic responses, noted 28 days after silica challenge. The upregulation of MIP-1α/CCL-3 and MIP-2/CXCL-2 and the cytokines TNF-α and TGF-β, as well as deposition of collagen and airway hyper-reactivity to methacholine were shown to be clearly sensitive to flunisolide, as compared to silica-challenge untreated mice. Additionally, flunisolide effectively suppressed the responses of proliferation and MCP-1/CCL-2 production from IL-13 stimulated lung fibroblasts from silica- or saline-challenged mice. In conclusion, we report that intranasal treatment with the corticosteroid flunisolide showed protective properties on pathological features triggered by silica particles in mice, suggesting that the compound may constitute a promising strategy for the treatment of silicosis.
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Affiliation(s)
| | | | | | | | | | | | | | - Cory Hogaboam
- Department of Medicine, Cedars-Sinai Medical Center, Women's Guild Lung Institute, Los Angeles, CA, United States
| | - John Wallace
- Departments of Physiology and Pharmacology, and Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Marco Aurélio Martins
- Laboratory of Inflammation, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Patrícia Machado Rodrigues e Silva
- Laboratory of Inflammation, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
- *Correspondence: Patrícia Machado Rodrigues e Silva
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Marinho Y, Marques-da-Silva C, Santana PT, Chaves MM, Tamura AS, Rangel TP, Gomes-E-Silva IV, Guimarães MZP, Coutinho-Silva R. MSU Crystals induce sterile IL-1β secretion via P2X7 receptor activation and HMGB1 release. Biochim Biophys Acta Gen Subj 2019; 1864:129461. [PMID: 31676289 DOI: 10.1016/j.bbagen.2019.129461] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Revised: 09/21/2019] [Accepted: 09/23/2019] [Indexed: 01/11/2023]
Abstract
BACKGROUD The mechanism by which monosodium urate (MSU) crystals induce inflammation is not completely understood. Few studies have shown that MSU is capable of stimulating the release of IL-1β in the absence of LPS treatment. The purinergic P2X7 receptor is involved in the release of IL-1β in inflammatory settings caused by crystals, as is the case in silicosis. METHODS We investigated the role of P2X7 receptor in sterile MSU-induced inflammation by evaluating peritonitis and paw edema. In in vitro models, we performed the experiments using peritoneal macrophages and THP-1 cells. We measured inflammatory parameters using ELISA and immunoblotting. We measured cell recruitment using cell phenotypic identification and hemocytometer counts. RESULTS Our in vivo data showed that animals without P2X7 receptors generated less paw edema, less cell recruitment, and lower levels of IL-1β release in a peritonitis model. In the in vitro model, we observed that MSU induced dye uptake by the P2X7 receptor. In the absence of the receptor, or when it was blocked, MSU crystals induced less IL-1β release and this effect corresponded to the concentration of extracellular ATP. Moreover, MSU treatment induced HMGB1 release; pre-treatment with P2X7 antagonist reduced the amount of HMGB1 in cell supernatants. CONCLUSIONS IL-1β secretion induced by MSU depends on P2X7 receptor activation and involves HMGB1 release. GENERAL SIGNIFICANCE We propose that cell activation caused by MSU crystals induces peritoneal macrophages and THP-1 cells to release ATP and HMGB1, causing IL-1β secretion via P2X7 receptor activation.
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Affiliation(s)
- Ygor Marinho
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
| | - Camila Marques-da-Silva
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
| | - Patricia Teixeira Santana
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
| | - Mariana Martins Chaves
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
| | - Augusto Shuiti Tamura
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
| | - Thuany Prado Rangel
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
| | - Isabel Virgínia Gomes-E-Silva
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
| | | | - Robson Coutinho-Silva
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil.
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Zhang B, Xu H, Zhang Y, Yi X, Zhang G, Zhang X, Xu D, Gao X, Li S, Zhu Y, Zhang H, Wei Z, Li S, Zhang L, Wang R, Yang F. Targeting the RAS axis alleviates silicotic fibrosis and Ang II-induced myofibroblast differentiation via inhibition of the hedgehog signaling pathway. Toxicol Lett 2019; 313:30-41. [PMID: 31181250 DOI: 10.1016/j.toxlet.2019.05.023] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2019] [Revised: 05/22/2019] [Accepted: 05/31/2019] [Indexed: 01/01/2023]
Abstract
The hedgehog (HH) signaling pathway plays an important role in lung development, but its significance in silicosis is unclear. We showed that in human coal pneumoconiosis autopsy specimens, Sonic Hedgehog (SHH) and the Glioma-associated oncogene homolog transcription factors family (GLI) 1 proteins were up-regulated, whereas Patch-1 (PTC) was down-regulated. The protein levels of SHH, smoothened (SMO), GLI1, GLI2, α-smooth muscle actin (α-SMA) and collagen type Ⅰ (Col Ⅰ) were also elevated gradually in the bronchoalveolar lavage fluid (BALF) of different stages of coal pneumoconiosis patients, dynamic silica-inhalation rat lung tissue and MRC-5 cells induced by Ang II at different time points, whereas the PTC and GLI3 levels were diminished gradually. Ac-SDKP, an active peptide of renin-angiotensin system (RAS), is an anti-fibrotic tetrapeptide. Targeting RAS axis also has anti-silicotic fibrosis effects. However, their roles on the HH pathway are still unknown. Here, we reported that Ac-SDKP + Captopril, Ac-SDKP, Captopril, or Ang (1-7) could alleviate silicotic fibrosis and collagen deposition, as well as improve the lung functions of silicotic rat. These treatments decreased the expression of SHH, SMO, GLI1, GLI2, α-SMA, and Col Ⅰ and increased the expression of PTC and GLI3 on both the silicotic rat lung tissue and MRC-5 cells induced by Ang II. We also reported that Ang II may promote myofibroblast differentiation via the GLI1 transcription factor and independently of the SMO receptor.
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Affiliation(s)
- Bonan Zhang
- School of Public Health, North China University of Science and Technology, Tangshan, China; Hebei Key Laboratory for Chronic Diseases, Tangshan Key Laboratory for Clinical and Basic Research on Chronic Diseases, School of Basic Medical Sciences, North China University of Science and Technology, Tangshan, China; Hebei Key Laboratory for Organ Fibrosis, Medical Research Center, North China University of Science and Technology, Tangshan, China
| | - Hong Xu
- Hebei Key Laboratory for Organ Fibrosis, Medical Research Center, North China University of Science and Technology, Tangshan, China
| | - Yi Zhang
- Clinical Medical College, North China University of Science and Technology, Tangshan, China
| | - Xue Yi
- Key Laboratory of Functional and Clinical Translational Medicine, Fujian Province University, Department of Basic Medicine, Xiamen Medical College, Xiamen, China
| | - Guizhen Zhang
- Hebei Key Laboratory for Chronic Diseases, Tangshan Key Laboratory for Clinical and Basic Research on Chronic Diseases, School of Basic Medical Sciences, North China University of Science and Technology, Tangshan, China; Hebei Key Laboratory for Organ Fibrosis, Medical Research Center, North China University of Science and Technology, Tangshan, China
| | - Xin Zhang
- Hebei Key Laboratory for Organ Fibrosis, Medical Research Center, North China University of Science and Technology, Tangshan, China
| | - Dingjie Xu
- College of Traditional Chinese Medicine, North China University of Science and Technology, Tangshan, China
| | - Xuemin Gao
- Basic Medical College, Hebei Medical University, Shijiazhuang, China
| | - Shifeng Li
- Basic Medical College, Hebei Medical University, Shijiazhuang, China
| | - Ying Zhu
- School of Public Health, North China University of Science and Technology, Tangshan, China; Hebei Key Laboratory for Organ Fibrosis, Medical Research Center, North China University of Science and Technology, Tangshan, China
| | - Hui Zhang
- Hebei Key Laboratory for Chronic Diseases, Tangshan Key Laboratory for Clinical and Basic Research on Chronic Diseases, School of Basic Medical Sciences, North China University of Science and Technology, Tangshan, China; Hebei Key Laboratory for Organ Fibrosis, Medical Research Center, North China University of Science and Technology, Tangshan, China
| | - Zhongqiu Wei
- Hebei Key Laboratory for Chronic Diseases, Tangshan Key Laboratory for Clinical and Basic Research on Chronic Diseases, School of Basic Medical Sciences, North China University of Science and Technology, Tangshan, China; Hebei Key Laboratory for Organ Fibrosis, Medical Research Center, North China University of Science and Technology, Tangshan, China
| | - Shumin Li
- School of Public Health, North China University of Science and Technology, Tangshan, China; Hebei Key Laboratory for Chronic Diseases, Tangshan Key Laboratory for Clinical and Basic Research on Chronic Diseases, School of Basic Medical Sciences, North China University of Science and Technology, Tangshan, China; Hebei Key Laboratory for Organ Fibrosis, Medical Research Center, North China University of Science and Technology, Tangshan, China
| | - Lijuan Zhang
- Hebei Key Laboratory for Organ Fibrosis, Medical Research Center, North China University of Science and Technology, Tangshan, China
| | - Ruimin Wang
- School of Public Health, North China University of Science and Technology, Tangshan, China; Hebei Key Laboratory for Organ Fibrosis, Medical Research Center, North China University of Science and Technology, Tangshan, China
| | - Fang Yang
- School of Public Health, North China University of Science and Technology, Tangshan, China; Hebei Key Laboratory for Organ Fibrosis, Medical Research Center, North China University of Science and Technology, Tangshan, China.
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Zhang BN, Xu H, Gao XM, Zhang GZ, Zhang X, Yang F. Protective Effect of Angiotensin (1-7) on Silicotic Fibrosis in Rats. Biomed Environ Sci 2019; 32:419-426. [PMID: 31262387 DOI: 10.3967/bes2019.057] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Accepted: 04/10/2019] [Indexed: 06/09/2023]
Abstract
OBJECTIVE Silicosis, caused by inhalation of silica dust, is the most serious occupational disease in China and the aim of present study was to explore the protective effect of Ang (1-7) on silicotic fibrosis and myofibroblast differentiation induced by Ang II. METHODS HOPE-MED 8050 exposure control apparatus was used to establish the rat silicosis model. Pathological changes and collagen deposition of the lung tissue were examined by H.E. and VG staining, respectively. The localizations of ACE2 and α-smooth muscle actin (α-SMA) in the lung were detected by immunohistochemistry. Expression levels of collagen type I, α-SMA, ACE2, and Mas in the lung tissue and fibroblasts were examined by western blot. Levels of ACE2, Ang (1-7), and Ang II in serum were determined by ELISA. Co-localization of ACE2 and α-SMA in fibroblasts was detected by immunofluorescence. RESULTS Ang (1-7) induced pathological changes and enhanced collagen deposition in vivo. Ang (1-7) decreased the expressions of collagen type I and α-SMA and increased the expressions of ACE2 and Mas in the silicotic rat lung tissue and fibroblasts stimulated by Ang II. Ang (1-7) increased the levels of ACE2 and Ang (1-7) and decreased the level of Ang II in silicotic rat serum. A779 enhanced the protective effect of Ang (1-7) in fibroblasts stimulated by Ang II. CONCLUSION Ang (1-7) exerted protective effect on silicotic fibrosis and myofibroblast differentiation induced by Ang II by regulating ACE2-Ang (1-7)-Mas axis.
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Affiliation(s)
- Bo Nan Zhang
- School of Public Health, North China University of Science and Technology, Tangshan 063210, Hebei, China; Hebei Key Laboratory for Organ Fibrosis, Medical Research Center, North China University of Science and Technology, Tangshan 063210, Hebei, China; Hebei Key Laboratory for Chronic Diseases, Tangshan Key Laboratory for Clinical and Basic Research on Chronic Diseases, School of Basic Medical Sciences, North China University of Science and Technology, Tangshan 063210, Hebei, China
| | - Hong Xu
- Hebei Key Laboratory for Organ Fibrosis, Medical Research Center, North China University of Science and Technology, Tangshan 063210, Hebei, China
| | - Xue Min Gao
- Basic Medical College, Hebei Medical University, Shijiazhuang 050017, Hebei, China
| | - Gui Zhen Zhang
- Hebei Key Laboratory for Organ Fibrosis, Medical Research Center, North China University of Science and Technology, Tangshan 063210, Hebei, China; Hebei Key Laboratory for Chronic Diseases, Tangshan Key Laboratory for Clinical and Basic Research on Chronic Diseases, School of Basic Medical Sciences, North China University of Science and Technology, Tangshan 063210, Hebei, China
| | - Xin Zhang
- Hebei Key Laboratory for Organ Fibrosis, Medical Research Center, North China University of Science and Technology, Tangshan 063210, Hebei, China
| | - Fang Yang
- Hebei Key Laboratory for Organ Fibrosis, Medical Research Center, North China University of Science and Technology, Tangshan 063210, Hebei, China
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Liu S, Hao C, Bao L, Zhao D, Zhang H, Hou J, Wang D, Chen H, Feng F, Yao W. Silica Particles Mediate Phenotypic and Functional Alteration of Dendritic Cells and Induce Th2 Cell Polarization. Front Immunol 2019; 10:787. [PMID: 31068929 PMCID: PMC6491578 DOI: 10.3389/fimmu.2019.00787] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Accepted: 03/25/2019] [Indexed: 01/01/2023] Open
Abstract
During silicosis, immune cells, including macrophages, T cells, B cells, and NK cells, participate in fibrosis development through alteration of the immune status. Dendritic cells (DCs) are professional antigen-presenting cells (APCs) with a key role in initiating immune responses and sustaining immune tolerance to maintain homeostasis. The relative contribution of DCs to silicosis progression is not well-documented. In the current study, we investigated the phenotypic and functional alterations of peripheral blood mononuclear cell (PBMC)-derived DCs of Sprague-Dawley (SD) rat during immune responses to silica exposure. We established models for direct and indirect exposure of DCs to silica by either treating DCs with silica or coculturing them with alveolar macrophages (AMs) treated with silica, respectively. The functional activity of DCs was analyzed by measuring their expression of costimulatory molecules, fluorescent microparticle uptake, cytokine production, and ability to mediate T cell polarization in vitro. In vivo, we demonstrated that silica could induce DC migration in response to silica exposure. Our results show that cytokine production by DCs was increased in response to direct silica direct exposure, while indirect silica exposure led to reduced cytokine levels. Moreover, the phagocytic capacity of DCs increased in cocultures after silica exposure. Gene and protein expression analyses showed that silica exposure altered the expression levels of Toll-like receptor pathway proteins and inflammatory factors. DC surface expression of the costimulatory molecules, CD80, CD86, and major histocompatibility complex, was inhibited by exposure to silica, which mediated a Th2-polarizing response in vitro. In rats, silica exposure induced migration of DCs from the peripheral blood into the alveoli. These results demonstrate that direct and indirect exposure to silica particles alter the phenotype and function of DCs, thereby regulating immune responses. Such changes may contribute to the development of silicosis by altering DC phenotype, function, and migration and by influencing the balance between Th1 and Th2 cells.
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Affiliation(s)
- Suna Liu
- Department of Henan Newborn Screening Center, Department of Pediatrics, Third Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Changfu Hao
- Department of Public Health, Zhengzhou University, Zhengzhou, China
| | - Lei Bao
- Department of Public Health, Zhengzhou University, Zhengzhou, China
| | - Dehua Zhao
- Department of Henan Newborn Screening Center, Department of Pediatrics, Third Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Hongyi Zhang
- Hospital Infection Management, The First Affiliated Hospital of Henan University, Kaifeng, China
| | - Jianyong Hou
- Department of Public Health, Zhengzhou University, Zhengzhou, China
| | - Di Wang
- Department of Public Health, Zhengzhou University, Zhengzhou, China
| | - Huiting Chen
- Department of Public Health, Zhengzhou University, Zhengzhou, China
| | - Feifei Feng
- Department of Public Health, Zhengzhou University, Zhengzhou, China
| | - Wu Yao
- Department of Public Health, Zhengzhou University, Zhengzhou, China
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Han L, Yao W, Bian Z, Zhao Y, Zhang H, Ding B, Shen H, Li P, Zhu B, Ni C. Characteristics and Trends of Pneumoconiosis in the Jiangsu Province, China, 2006⁻2017. Int J Environ Res Public Health 2019; 16:ijerph16030437. [PMID: 30717363 PMCID: PMC6388371 DOI: 10.3390/ijerph16030437] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 01/22/2019] [Accepted: 01/24/2019] [Indexed: 12/13/2022]
Abstract
This study aims to describe the characteristics and trends of pneumoconiosis in the Jiangsu Province, China, and provide information for the occupational diseases control. We collected and analyzed the data of pneumoconiosis cases reported annually from 2006 to 2017. The information of the cases mainly includes case distributions, clinical types and stages, enterprise types and scales, as well as diagnosis age and exposure duration. A total of 9243 pneumoconiosis cases were reported between 2006 and 2017, among which silicosis and coal workers’ pneumoconiosis accounted for the vast majority (87.5%). The incidence of pneumoconiosis was relatively higher in Wuxi, Yancheng, Suzhou and Xuzhou, compared to the other district. Most pneumoconiosis cases occurred in the state-owned (58.4%) and collective enterprises (23.8%). Most cases worked in industries related to geology and coal production. The median exposure duration and diagnosis age of the total pneumoconiosis cases was 13.2 and 61.0 years, respectively. Therefore, more measurements are needed to control pneumoconiosis in the Jiangsu Province.
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Affiliation(s)
- Lei Han
- Institute of Occupational Disease Prevention, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210028, China.
| | - Wenxi Yao
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China.
- Wuxi School of Medicine, Jiangnan University, Wuxi 214122, China.
| | - Zilong Bian
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China.
| | - Yuan Zhao
- Institute of Occupational Disease Prevention, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210028, China.
| | - Hengdong Zhang
- Institute of Occupational Disease Prevention, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210028, China.
| | - Bangmei Ding
- Institute of Occupational Disease Prevention, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210028, China.
| | - Han Shen
- Institute of Occupational Disease Prevention, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210028, China.
| | - Ping Li
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China.
| | - Baoli Zhu
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China.
| | - Chunhui Ni
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China.
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McGraw MD, Houser GH, Galambos C, Wartchow EP, Stillwell PC, Weinman JP. Marijuana medusa: The many pulmonary faces of marijuana inhalation in adolescent males. Pediatr Pulmonol 2018; 53:1619-1626. [PMID: 30353708 DOI: 10.1002/ppul.24171] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2018] [Accepted: 09/08/2018] [Indexed: 11/10/2022]
Abstract
Marijuana use has risen dramatically over the past decade. Over this same time period, pediatric hospitals have seen an increase in presentation of adolescents with acute respiratory symptoms after recent marijuana inhalation. We report a case series of three adolescent males with significant findings of bilateral pulmonary nodules and ground glass opacities on chest imaging associated with recent marijuana inhalation. Lung biopsies in two of the three patients confirmed silica-induced pneumoconiosis. The third patient was diagnosed with acute hypersensitivity pneumonitis without lung biopsy. Improvement in clinical symptoms and lung function testing were noted in two of three patients after marijuana inhalation cessation. This case series highlights the variety of severe pulmonary presentations in adolescents following recent marijuana inhalation. Future studies are required to assess whether these presenting pulmonary complications are from direct marijuana exposure or indirect associations with marijuana inhalation injuries.
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Affiliation(s)
- Matthew D McGraw
- Division of Pulmonary Medicine and the Breathing Institute, Department of Pediatrics, University of Colorado, Aurora, Colorado
| | - Grace H Houser
- Division of Pulmonary Medicine and the Breathing Institute, Department of Pediatrics, University of Colorado, Aurora, Colorado
| | - Csaba Galambos
- Department of Pathology and Laboratory Medicine, University of Colorado, Aurora, Colorado
| | - Eric P Wartchow
- Department of Pathology and Laboratory Medicine, University of Colorado, Aurora, Colorado
| | - Paul C Stillwell
- Division of Pulmonary Medicine and the Breathing Institute, Department of Pediatrics, University of Colorado, Aurora, Colorado
| | - Jason P Weinman
- Department of Radiology, School of Medicine Anschutz Medical Campus, University of Colorado, Aurora, Colorado
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Abstract
A 63-year-old man with occupational exposure to silica presented with cutaneous ulcer, pleuritic pain, and a fever. Laboratory data showed lymphopenia and positive serum antinuclear and anti-DNA antibodies. Computed tomography of the chest showed egg shell-like calcification of the hilar and mediastinal lymph nodes without pulmonary parenchymal involvement of silicosis. A surgical biopsy showed silicotic nodules with surrounding infiltration of lymphocytes and plasma cells in the parietal pleura. With a diagnosis of systemic lupus erythematosus (SLE), systemic corticosteroid therapy was given, which led to the resolution of symptoms and laboratory abnormalities. We discuss the relationship between silica exposure and the development of SLE.
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Affiliation(s)
- Kazuo Tsuchiya
- Department of Respiratory Medicine, Hamamatsu Rosai Hospital, Japan
| | - Mikio Toyoshima
- Department of Respiratory Medicine, Hamamatsu Rosai Hospital, Japan
| | - Atsuki Fukada
- Department of Respiratory Medicine, Hamamatsu Rosai Hospital, Japan
| | - Daisuke Akahori
- Department of Respiratory Medicine, Hamamatsu Rosai Hospital, Japan
| | - Kazuhito Funai
- First Department of Surgery, Hamamatsu University School of Medicine, Japan
| | - Takafumi Suda
- Second Department of Internal Medicine, Hamamatsu University School of Medicine, Japan
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Li J, Yao W, Hou JY, Zhang L, Bao L, Chen HT, Wang D, Yue ZZ, Li YP, Zhang M, Yu XH, Zhang JH, Qu YQ, Hao CF. The Role of Fibrocyte in the Pathogenesis of Silicosis. Biomed Environ Sci 2018; 31:311-316. [PMID: 29773095 DOI: 10.3967/bes2018.040] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Accepted: 03/07/2018] [Indexed: 06/08/2023]
Abstract
Exposure to free silica induces silicosis and myofibroblasts are regarded as primary effector cells. Fibrocytes can differentiate into myofibroblast. Therefore, the present study was designed to investigate whether fibrocytes participate in silicosis. The rat model of silicosis was established. Hematoxylin-eosin stainings and Masson stainings were used to evaluate the histopathology and collagen deposition. Flow cytometry and immunofluorescence were performed to detect the number of fibrocytes and their contribution to myofibroblasts. Results showed that fibrocytes participate in silicosis. Trend analysis of different sources of myofibroblasts during silicosis indicated that fibrocytes and lung type II epithelial cell-derived myofibroblasts play an important role in the early stage of silicosis, while resident lung fibroblast-derived myofibroblasts play a predominant role during the fibrosis formative period.
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Affiliation(s)
- Juan Li
- College of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China; School of Public Health, Xinxiang Medical University, Xinxiang 453003, Henan, China
| | - Wu Yao
- College of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Jian Yong Hou
- College of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Lin Zhang
- College of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Lei Bao
- College of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Hui Ting Chen
- College of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Di Wang
- College of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Zhong Zheng Yue
- College of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Yi Ping Li
- College of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Miao Zhang
- College of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Xing Hao Yu
- College of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Jian Hui Zhang
- College of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Ya Qian Qu
- College of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Chang Fu Hao
- College of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
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Cao Z, Xiao Q, Dai X, Zhou Z, Jiang R, Cheng Y, Yang X, Guo H, Wang J, Xi Z, Yao H, Chao J. circHIPK2-mediated σ-1R promotes endoplasmic reticulum stress in human pulmonary fibroblasts exposed to silica. Cell Death Dis 2017; 8:3212. [PMID: 29238093 PMCID: PMC5870587 DOI: 10.1038/s41419-017-0017-4] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Revised: 09/16/2017] [Accepted: 10/02/2017] [Indexed: 12/16/2022]
Abstract
Silicosis is characterized by fibroblast accumulation and excessive deposition of extracellular matrix. Although the roles of SiO2-induced chemokines and cytokines released from alveolar macrophages have received significant attention, the direct effects of SiO2 on protein production and functional changes in pulmonary fibroblasts have been less extensively studied. Sigma-1 receptor, which has been associated with cell proliferation and migration in the central nervous system, is expressed in the lung, but its role in silicosis remains unknown. To elucidate the role of sigma-1 receptor in fibrosis induced by silica, both the upstream molecular mechanisms and the functional effects on cell proliferation and migration were investigated. Both molecular biological assays and pharmacological techniques, combined with functional experiments, such as migration and proliferation, were applied in human pulmonary fibroblasts from adults to analyze the molecular and functional changes induced by SiO2. SiO2 induced endoplasmic reticulum stress in association with enhanced expression of sigma-1 receptor. Endoplasmic reticulum stress promoted migration and proliferation of human pulmonary fibroblasts-adult exposed to SiO2, inducing the development of silicosis. Inhibition of sigma-1 receptor ameliorated endoplasmic reticulum stress and fibroblast functional changes induced by SiO2. circHIPK2 is involved in the regulation of sigma-1 receptor in human pulmonary fibroblasts-adult exposed to SiO2. Our study elucidated a link between SiO2-induced fibrosis and sigma-1 receptor signaling, thereby providing novel insight into the potential use of sigma-1 receptor/endoplasmic reticulum stress in the development of novel therapeutic strategies for silicosis treatment.
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Affiliation(s)
- Zhouli Cao
- Department of Physiology, School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China
- Department of Pharmacology, School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China
- Key Laboratory of Developmental Genes and Human Disease, Southeast University, Nanjing, 210096, China
- Department of Respiration, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China
| | - Qingling Xiao
- Third Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, 210023, China
| | - Xiaoniu Dai
- Department of Physiology, School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China
| | - Zewei Zhou
- Department of Pharmacology, School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China
| | - Rong Jiang
- Department of Physiology, School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China
- Department of Respiration, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China
| | - Yusi Cheng
- Department of Physiology, School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China
| | - Xiyue Yang
- Department of Physiology, School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China
- Key Laboratory of Developmental Genes and Human Disease, Southeast University, Nanjing, 210096, China
| | - Huifang Guo
- Department of Physiology, School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China
- Key Laboratory of Developmental Genes and Human Disease, Southeast University, Nanjing, 210096, China
| | - Jing Wang
- Department of Physiology, School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China
| | - Zhaoqing Xi
- Third Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, 210023, China
| | - Honghong Yao
- Department of Pharmacology, School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China
- Key Laboratory of Developmental Genes and Human Disease, Southeast University, Nanjing, 210096, China
| | - Jie Chao
- Department of Physiology, School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China.
- Department of Pharmacology, School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China.
- Key Laboratory of Developmental Genes and Human Disease, Southeast University, Nanjing, 210096, China.
- Department of Respiration, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China.
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Li J, Yao W, Hou JY, Zhang L, Bao L, Chen HT, Wang D, Yue ZZ, Li YP, Zhang M, Hao CF. Crystalline Silica Promotes Rat Fibrocyte Differentiation in Vitro, and Fibrocytes Participate in Silicosis in Vivo. Biomed Environ Sci 2017; 30:649-660. [PMID: 29081339 DOI: 10.3967/bes2017.086] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 08/29/2017] [Indexed: 06/07/2023]
Abstract
OBJECTIVE The aim of this study was to investigate the effects of SiO2 on fibrocytes and whether fibrocytes participate in silicosis in vivo. METHODS A macrophagocyte (AM)/fibrocyte coculture system was established, and AMs were treated with 100 μg/mL SiO2. Flow cytometry was used to detect the number of fibrocytes. Real-time PCR was performed to measure the expression of collagen I, collagen III, and α-SMA mRNA. The levels of collagen I, collagen III, and TGF-β1 protein were determined by ELISA. Immunohistochemical staining was performed to measure α-SMA protein expression. A rat silicosis model was induced by intratracheal instillation of SiO2. Lung histopathological evaluation was conducted using HE and Masson's trichrome staining after 1 and 9 weeks. The number of fibrocytes in peripheral blood or lung tissue of rat was detected by flow cytometry. Double-color immunofluorescence was applied to identify fibrocytes in the lung tissue. RESULTS Peripheral blood monocytes were found to differentiate into fibrocytes in vitro in a time-dependent manner, and exposure to crystalline silica might potentiate fibrocyte differentiation. In addition, fibrocytes were able to migrate from peripheral blood to the lung tissue, and the number of fibrocytes was increased after SiO2 exposure. CONCLUSION Silica exposure potentiates fibrocyte differentiation, and fibrocytes may participate in silicosis in vivo.
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Affiliation(s)
- Juan Li
- Department of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Wu Yao
- Department of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Jian Yong Hou
- Department of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Lin Zhang
- Department of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Lei Bao
- Department of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Hui Ting Chen
- Department of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Di Wang
- Department of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Zhong Zheng Yue
- Department of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Yi Ping Li
- Department of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Miao Zhang
- Department of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Chang Fu Hao
- Department of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
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ZHANG Y, WANG F, ZHOU D, REN X, ZHOU D, GAO X, LAN Y, ZHANG Q, XIE X. Genome-wide analysis of aberrantly expressed microRNAs in bronchoalveolar lavage fluid from patients with silicosis. Ind Health 2016; 54:361-9. [PMID: 26903263 PMCID: PMC4963549 DOI: 10.2486/indhealth.2015-0170] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Background To identify differentially expressed miRNAs profiles in bronchoalveolar lavage fluid (BALF) from patients with silicosis and consider the potential contribution of miRNAs to silicosis.Methods miRNAs expression profiling were performed in the cell fraction of BALF samples obtained from 9 subjects (3 silicosis observation subjects, 3 stage I and stage II silicosis patients, respectively). The differential expression of two selected miRNAs hsa-miR-181c-5p and hsa-miR-29a-3p were confirmed by RT-qPCR. Furthermore, miRNAs Gene Ontology Enrichment categories and target mRNAs were determined based on miRWalk.Results We found 110 dysregulated miRNAs in silicosis samples, most of which showed a down-regulation trend. Microarray results were confirmed by RT-qPCR. With the observation group samples set as standards, stage I samples showed 123 differentially expressed miRNAs, and stage II 46. 23 miRNAs were dysregulated in both stages. Finally, functional enrichment analysis indicated that these miRNAs played an important role in various biological processes, including ECM-receptor interaction and endocytosis.Conclusions This is the first time to acquire the BALF-derived microRNAs expression profiling targeting to human silicosis. These results contribute to unravelling miRNAs involved in the pathogenesis of silicosis, and provide new tools of potential use of as biomarkers for diagnosis and/or therapeutic purposes.
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Affiliation(s)
- Yang ZHANG
- Department of Occupational and Environmental Medicine, West China School of Public Health, Sichuan University, China
| | - Faxuan WANG
- Department of Occupational and Environmental Medicine, School of Public Health, Ningxia Medical University, China
| | - Dingzi ZHOU
- Department of Occupational Diseases, No. 4 West China Teaching Hospital, Sichuan University, China
| | - Xiaohui REN
- Department of Industrial Hygiene, 903 Hospital of China Academy of Engineering Physics, China
| | - Dinglun ZHOU
- Department of Occupational and Environmental Medicine, West China School of Public Health, Sichuan University, China
| | - Xiaosi GAO
- Department of Occupational Diseases, No. 4 West China Teaching Hospital, Sichuan University, China
| | - Yajia LAN
- Department of Occupational and Environmental Medicine, West China School of Public Health, Sichuan University, China
| | - Qin ZHANG
- Department of Occupational and Environmental Medicine, West China School of Public Health, Sichuan University, China
- To whom correspondence should be addressed. *E-mail:
| | - Xiaoqi XIE
- Department of Critical Care Medicine, West China Hospital, Sichuan University, China
- **E-mail:
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Elkard I, Zaghba N, Benjelloun H, Bakhatar A, Yassine N. [Silicotuberculosis]. Rev Pneumol Clin 2016; 72:179-183. [PMID: 26790716 DOI: 10.1016/j.pneumo.2015.10.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Revised: 09/30/2015] [Accepted: 10/06/2015] [Indexed: 06/05/2023]
Abstract
OBJECTIVE Tuberculosis is a serious and common complication of silicosis. The aim of this study is to describe the epidemiological, clinical, radiological and progressive aspects of this pathological entity. PATIENTS AND METHODS The study concerns 23 cases of silicotuberculosis which were collected at the service of respiratory diseases at CHU Ibn Rochd of Casablanca, Morocco during 12years (2003-2015). RESULTS All patients were men. They were 7 diggers, 5 rock crushers, 7 miners and 4 masons. The mean duration of silica exposure was 11years. The symptomatology was dominated by dyspnea and persistent bronchial syndrome. Imagery showed tumor-like opacities in all cases, associated with mediastinal calcified lymphadenopathy in 9 cases, with micronodules in 8 cases and an excavated opacity in 2 cases. The diagnosis of tuberculosis was confirmed by isolation of the Koch's bacillus in sputum in 13% of cases in the bronchial aspirate in 52% and culture in sputum post-bronchoscopy in 13%. The bronchial biopsies confirmed the diagnosis in 2 cases. Tuberculosis had complicated silicosis 9years on average after the cessation of exposure to silica in 65% of cases. The antituberculous treatment was started in all patients with good clinical outcome in 22 cases. We had deplored a case of death by acute respiratory failure. CONCLUSION Silicosis increases the risk of tuberculosis, hence the importance of TB screening in all patients with silicosis.
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Affiliation(s)
- I Elkard
- Service des maladies respiratoires, CHU Ibn Rochd, Casablanca, Maroc.
| | - N Zaghba
- Service des maladies respiratoires, CHU Ibn Rochd, Casablanca, Maroc
| | - H Benjelloun
- Service des maladies respiratoires, CHU Ibn Rochd, Casablanca, Maroc
| | - A Bakhatar
- Service des maladies respiratoires, CHU Ibn Rochd, Casablanca, Maroc
| | - N Yassine
- Service des maladies respiratoires, CHU Ibn Rochd, Casablanca, Maroc
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Cohen RA, Petsonk EL, Rose C, Young B, Regier M, Najmuddin A, Abraham JL, Churg A, Green FHY. Lung Pathology in U.S. Coal Workers with Rapidly Progressive Pneumoconiosis Implicates Silica and Silicates. Am J Respir Crit Care Med 2016; 193:673-80. [PMID: 26513613 PMCID: PMC4824937 DOI: 10.1164/rccm.201505-1014oc] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Accepted: 10/23/2015] [Indexed: 11/16/2022] Open
Abstract
RATIONALE Recent reports of progressive massive fibrosis and rapidly progressive pneumoconiosis in U.S. coal miners have raised concerns about excessive exposures to coal mine dust, despite reports of declining dust levels. OBJECTIVES To evaluate the histologic abnormalities and retained dust particles in available coal miner lung pathology specimens, and to compare these findings with those derived from corresponding chest radiographs. METHODS Miners with severe disease and available lung tissue were identified through investigator outreach. Demographic as well as smoking and work history information was obtained. Chest radiographs were interpreted according to the International Labor Organization classification scheme to determine if criteria for rapidly progressive pneumoconiosis were confirmed. Pathology slides were scored by three expert pulmonary pathologists using a standardized nomenclature and scoring system. MEASUREMENTS AND MAIN RESULTS Thirteen cases were reviewed, many of which had features of accelerated silicosis and mixed dust lesions. Twelve had progressive massive fibrosis, and 11 had silicosis. Only four had classic lesions of simple coal workers' pneumoconiosis. Four had diffuse interstitial fibrosis with chronic inflammation, and two had focal alveolar proteinosis. Polarized light microscopy revealed large amounts of birefringent mineral dust particles consistent with silica and silicates; carbonaceous coal dust was less prominent. On the basis of chest imaging studies, specimens with features of silicosis were significantly associated (P = 0.047) with rounded (type p, q, or r) opacities, whereas grade 3 interstitial fibrosis was associated (P = 0.02) with the presence of irregular (type s, t, or u) opacities. CONCLUSIONS Our findings suggest that rapidly progressive pneumoconiosis in these miners was associated with exposure to coal mine dust containing high concentrations of respirable silica and silicates.
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Affiliation(s)
- Robert A. Cohen
- Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | | | - Cecile Rose
- National Jewish Health, Denver, Colorado
- University of Colorado School of Medicine, Denver, Colorado
| | - Byron Young
- Charleston Area Medical Center, Charleston, West Virginia
| | - Michael Regier
- School of Public Health, West Virginia University, Morgantown, West Virginia
| | | | - Jerrold L. Abraham
- State University of New York, Upstate Medical University, Syracuse, New York
| | - Andrew Churg
- University of British Columbia, Vancouver, British Columbia, Canada; and
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Karaca T, Yoldas O, Bilgin BC, Yilmaz OH, Karaca N, Simsek GG, Alici IO, Uzdogan A, Tezer A, Comert MA, Akin T, Kismet K, Tutkun E, Akbiyik F. Does tamoxifen citrate prevent pulmonary fibrosis due to silica inhalation? ACTA ACUST UNITED AC 2015; 116:440-5. [PMID: 26286247 DOI: 10.4149/bll_2015_083] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND As shown in several studies, besides being used in breast cancer, tamoxifen is also known for its antifibrotic effects via reducing the serum TGF-beta levels. We investigated the possible preventive effect of tamoxifen in rats exposed to silica particles depending on the antifibrotic effect. MATERIALS AND METHODS A total of 102 adult female Wistar Albino rats were divided into five groups. First two groups (control and tmx) were free of silica and the last three groups (slc, tmx1 and tmx 10) were exposed to crystalline silica. The rats in tmx, tmx1 and tmx10 groups received 10 mg/kg, 1 mg/kg and 10 mg/kg of body weight tamoxifen, respectively. On day 84, all rats were sacrified and tissue samples were obtained together with blood samples. The differences in serum TGF-β levels, histological grades of fibrosis and inflammation in the lung and liver tissues together with addional biochemical markers were calculated between the groups. RESULTS Silicosis occurred in slc, tmx1 and tmx10 groups in 100%, 91.7% and 52.1%, respectively. Liver fibrosis did not occur. The highest mean lung fibrosis scores were obtained in slc group while the scores were lower in tmx1 group and the lowest in tmx10 within silica-exposed rats. Nevertheless, the inflammation scores were higher in tamoxifen-administered rats in a dose-dependent pattern. CONCLUSION Silica inhalation did not result in liver fibrosis. Tamoxifen is found to prevent lung fibrosis and reduce serum TGFβ-1 levels while increasing lung inflammation (Tab. 3, Fig. 3, Ref. 27).
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Abstract
BACKGROUND Aquaporin-1 (AQP-1), found in the early 1990s, a water channel protein in the cell membranes of mammals, has been reported to play an important role in water balance of the respiratory system. However, there are a few studies about the role of AQP in occupational pulmonary disease such as silicosis. This study is to explore the information of aquaporin-1 (AQP-1) in the pathogenesis of silicosis by examining AQP expression, distribution, and location in the lung tissue of a silicotic rat model. METHODS Male Wistar SPF rats were divided randomly into the following 8 groups (n = 8 per group): (1) saline control group: instillation of 1 mL sterile physiological saline; (2) silica groups (ld, 7d, 14d, 28d, 42d, 56d): instillation of a suspension of 50 mg silica dust in a total volume of 1 mL sterile physiological saline; (3) the normal control group without treatment. Immunohistochemistry, immunofluorescence, and western blot were used to detect distribution and expression of AQP-1 in the lung tissue of rats exposed to silica. RESULTS The expression of AQP-1 between normal and the saline control rats showed no significant difference, but was decreased in the silicotic model rats' lung. CONCLUSIONS The expression of AQP-1 decreased in silicotic rats, which suggests that AQP-1 may play an important role in the formation of silicosis.
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Weng S, Wang L, Rong Y, Liu Y, Wang X, Guan H, Chen W. Effects of the Interactions between Dust Exposure and Genetic Polymorphisms in Nalp3, Caspase-1, and IL-1β on the Risk of Silicosis: A Case-Control Study. PLoS One 2015; 10:e0140952. [PMID: 26496436 PMCID: PMC4619690 DOI: 10.1371/journal.pone.0140952] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Accepted: 10/03/2015] [Indexed: 01/03/2023] Open
Abstract
Objectives To evaluate the effects of the interactions between polymorphisms in Nalp3, caspase-1, and interleukin(IL)-1β genes and occupational dust exposure on the risk of silicosis. Methods We conducted a population-based case-control study in a large iron mine in China. Between January 2006 and December 2009, we identified 179 patients with silicosis to evaluate as cases and 201 individuals without silicosis to evaluate as controls. We estimated cumulative dust exposure (CDE) for all subjects and we genotyped polymorphisms in Nalp3, caspase-1, and IL-1β genes. We estimated odds ratios(ORs), 95% confidence intervals(95%CIs), and p-values using logistic regression models adjusted for selected confounders. Results After adjusting for age, smoking status, and CDE, subjects with the CT genotype of Ex4-849C>T in Nalp3 and the GA genotype of Ex2+37G>A in caspase-1 had increased risks of silicosis (adjusted ORs[95%CIs] = 2.40 [1.12–5.12] and 3.62 [1.63–8.02], respectively). Among subjects younger than 70 years old, those with the CC genotype of IVS8-7652A>C in Nalp3 had a lower risk of silicosis than those with other genotypes (adjusted OR[95%CI] = 0.24[0.06–0.88]). Among subjects aged 70 years and older, those with the CT genotype of Ex4-849C>T in Nalp3 and those with the GA genotype of Ex2+37G>A in caspase-1 had a higher risk of silicosis than those with other genotypes (adjusted ORs [95%CI] = 2.52[1.04–6.12] and 5.19[1.88–14.35], respectively). Among subjects with CDE greater than 120 mg/m3×year and among smokers, those with the GA genotype of Ex2+37G>A in caspase-1 had a higher risk of silicosis than those with other genotypes (adjusted ORs[95%CIs] = 26.37[3.35–207.39] and 3.47[1.40–8.64], respectively). Conclusions Genetic polymorphisms in Nalp3 and caspase-1 may be associated with individual susceptibility to silicosis, especially when the polymorphisms interact with age, CDE, or smoking status.
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Affiliation(s)
- Shaofan Weng
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
- Shenzhen Prevention and Treatment Center for Occupational Disease, Shenzhen, Guangdong, China
| | - Lihua Wang
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
- Shenzhen Baoan Center for Disease Control and Prevention, Shenzhen, Guangdong, China
| | - Yi Rong
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Yuewei Liu
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Xin Wang
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Hongyu Guan
- Daye Iron Mine Hospital, Wuhan Iron and Steel Corporation, Huangshi, Hubei, China
| | - Weihong Chen
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
- * E-mail:
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Miao R, Ding B, Zhang Y, Wu W, Fang Z, Zhao R, Xia Q, Li Y, Zhu B. [Comparative analysis of serum proteomic profiles between patients with silicosis and chronic bronchitis]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2015; 33:589-591. [PMID: 26653808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
OBJECTIVE To analyze the differences in serum proteomic profiles between patients with silicosis and chronic bronchitis and to investigate the pathogenesis, clinical diagnosis, and treatment of these two disease. METHODS Serum samples from patients with stage I silicosis and chronic bronchitis were collected. Two-dimensional gel electrophoresis was performed and protein plots with expression differences higher than 2-fold were identified and further analyzed by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry. RESULTS Compared with the silicosis group, the chronic bronchitis group had 11 up-regulated proteins and 23 down-regulated proteins. The chronic bronchitis group had high expression of proteins such as interferon beta precursor, apolipoprotein precursor, and transforming growth factor beta1 precursor. The silicosis group had high expression of proteins such as interleukin-6, granzyme A, cathepsin G, and glycoprotein precursor. CONCLUSION The differentially expressed proteins are mainly involved in the activity of serine enzymes, cytotoxicity, inflammation response, and apolipoprotein transfer and play different roles in silicosis and chronic bronchitis.
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Xue R, Zhu L, Li Q, Yang Z, Wang X, Gao H. [Screening and identification of key signal transduction pathways in pulmonary silicotic fibrosis]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2014; 32:173-180. [PMID: 24641844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
OBJECTIVE To investigate the differential gene expression profile of the lung tissues in experimental silicosis rats and to screen for and identify the key signal transduction pathways in pulmonary silicotic fibrosis. METHODS A total of 80 rats were randomly divided into control group (n = 40) and silica-instilled group (n = 40). Each group was equally divided into five subgroups, and each subgroup was treated at 1, 7, 14, 21, or 28 d. Intratracheal instillation was used to give 1 ml of silica suspension (50 mg/ml) in the silica-instilled group and normal saline in the control group. Silicotic nodules and type I and III collagen were observed through hematoxylin and eosin staining and Sirius red staining, respectively. Differentially expressed genes in pulmonary silicotic fibrosis were selected by the rat whole-genome gene expression RatRef-12 BeadChip (Illumina, USA), and a fold change cutoff was applied. Quantitative real-time polymerase chain reaction (qRT-PCR) was also used to verify differentially expressed genes. Through bioinformatics databases such as Visualization and Integrated Discovery (DAVID) and Kyoto Encyclopedia of Genes and Genomes (KEGG), preliminary research was performed on the biological pathways of differential genes, key biological signal transduction pathways were identified, and key differentially expressed genes in each pathway at different time points were searched for. RESULTS A total of 2694 genes were differentially expressed and changed dynamically. The KEGG pathway analysis showed that 141 signal transduction pathways were involved in the development and progression of pulmonary silicotic fibrosis, among which 48 pathways were more significant than others (P < 0.01), with the mitogen-activated protein kinase (MAPK) pathway exceptionally significant. The differentially expressed genes interleukin-1 receptor (IL-1R), tumor necrosis factor receptor (TNFR), and transforming growth factor beta (TGF-β) in the MAPK pathway were up-regulated at different time points after silica instillation. The results of real-time PCR showed that granulocyte-macrophage colony-stimulating factor (GM-CSF) was over-expressed at 4 time points and under-expressed at 1 time point compared with the control group. CONCLUSION The MAPK signal transduction pathway plays a very important role in the development of pulmonary silicotic fibrosis. Both IL-1R and TNFR may play major roles during inflammation phase through the P38/Jun N-terminal kinase (JNK) pathway, and TGF-β may have important function through the extracellular-signal-regulated kinase (ERK) pathway in the formation of fibrosis.
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Affiliation(s)
- Rong Xue
- Department of Pathology, Hebei United University, Tangshan 063000, China
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