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Zhang C, Jin H, Kang Y, Wu Y, Zheng R, Zhang Z, Xu H, Cai W, Gao X, Liu H, Mao N, Yang J. IL-17A-neutralizing antibody ameliorates inflammation and fibrosis in rosacea by antagonizing the CXCL5/CXCR2 axis. FASEB J 2024; 38:e70096. [PMID: 39370827 DOI: 10.1096/fj.202400006r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 09/14/2024] [Accepted: 09/24/2024] [Indexed: 10/08/2024]
Abstract
Rosacea is a chronic inflammatory skin disorder that can lead to fibrosis. However, the mechanisms underlying fibrosis in the later stages of rosacea have been less thoroughly investigated. Interleukin-17A (IL-17A) has been implicated in both inflammation and organ fibrosis; however, the effectiveness and mechanism of IL-17A-neutralizing antibodies in the later stages of rosacea-related fibrosis remain unclear. In this study, we induced rosacea-like lesions in mice using LL-37 and administered IL-17A-neutralizing antibodies. The results indicated that the IL-17A-neutralizing antibodies alleviated skin damage, reduced skin thickness, and decreased the secretion of inflammatory factors (TNF-α, CAMP, TLR4, P-NF-kB), angiogenesis-related factors (CD31, VEGF), and the TGF-β1 signaling pathway, along with factors associated with epithelial-mesenchymal transition and the deposition of fibrosis-related proteins (COL1) in the rosacea-like mouse models. Furthermore, the IL-17A-neutralizing antibodies effectively diminished the expression of IL-17, IL-17R, CXCL5, and CXCR2 in the skin. Our findings demonstrate that IL-17A-neutralizing antibodies inhibit the activation of the CXCL5/CXCR2 axis in rosacea-like skin tissue, thereby ameliorating inflammation and fibrosis associated with the condition.
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Affiliation(s)
- Chuanxi Zhang
- Clinical Medical College, North China University of Science and Technology, Tangshan, China
- Department of Dermatology, Affiliated Hospital of North China University of Science and Technology, Tangshan, China
| | - Hui Jin
- Department of Dermatology, Affiliated Hospital of North China University of Science and Technology, Tangshan, China
| | - Yumeng Kang
- Clinical Medical College, North China University of Science and Technology, Tangshan, China
| | - Yiling Wu
- Clinical Medical College, North China University of Science and Technology, Tangshan, China
| | - Ruiping Zheng
- Clinical Medical College, North China University of Science and Technology, Tangshan, China
| | - Ziyan Zhang
- Clinical Medical College, North China University of Science and Technology, Tangshan, China
- Department of Dermatology, Affiliated Hospital of North China University of Science and Technology, Tangshan, China
| | - Hong Xu
- School of Public Health, North China University of Science and Technology, Tangshan, China
- National Health Commission (NHC) Key Laboratory of Pneumoconiosis, Taiyuan, China
| | - Wenchen Cai
- School of Public Health, North China University of Science and Technology, Tangshan, China
| | - Xuemin Gao
- School of Public Health, North China University of Science and Technology, Tangshan, China
- National Health Commission (NHC) Key Laboratory of Pneumoconiosis, Taiyuan, China
| | - Heliang Liu
- School of Public Health, North China University of Science and Technology, Tangshan, China
| | - Na Mao
- School of Public Health, North China University of Science and Technology, Tangshan, China
| | - Jie Yang
- Clinical Medical College, North China University of Science and Technology, Tangshan, China
- Department of Dermatology, Affiliated Hospital of North China University of Science and Technology, Tangshan, China
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Li H, Xu S, Li X, Wang P, Hu M, Li N, Zhou Q, Chang M, Yao S. Inhibition of the ITGB1 gene attenuates crystalline silica-induced pulmonary fibrosis via epithelial-mesenchymal transformation. Braz J Med Biol Res 2024; 57:e13486. [PMID: 39258668 PMCID: PMC11379350 DOI: 10.1590/1414-431x2024e13486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Accepted: 07/24/2024] [Indexed: 09/12/2024] Open
Abstract
Silicosis is a systemic disease caused by long-term exposure to high concentrations of free silica dust particles in the workplace. It is characterized by a persistent inflammatory response, fibroblast proliferation, and excessive collagen deposition, leading to pulmonary interstitial fibrosis. Epithelial interstitial transformation (EMT) can cause epithelial cells to lose their tight junctions, cell polarity, and epithelial properties, thereby enhancing the properties of interstitial cells, which can lead to the progression of fibrosis and the formation of scar tissue. Integrin 1 (ITGB1) is considered an important factor for promoting EMT and tumor invasion in a variety of tumors and also plays an important role in the progression of fibrotic diseases. Therefore, ITGB1 can be used as a potential target for the treatment of silicosis. In this study, we found that silica exposure induced epithelial-mesenchymal transformation in rats and that the expression of integrin ITGB1 was elevated along with the EMT. We used CRISPR/Cas9 technology to construct integrin ITGB1 knockdown cell lines for in vitro experiments. We compared the expression of the EMT key proteins E-cadherin and vimentin in the ITGB1 knockdown cells and wild-type cells simultaneously stimulated by silica and detected the aggregation point distribution of E-cadherin and vimentin in the cells using laser confocal microscopy. Our results showed that ITGB1 knockout inhibited the ITGB1/ILK/Snail signaling pathway and attenuated the EMT occurrence compared to control cells. These results suggested that ITGB1 is associated with silica-induced EMT and may be a potential target for the treatment of silicosis.
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Affiliation(s)
- Haibin Li
- School of Public Health, North China University of Science and Technology, Tangshan, China
- School of Public Health, Xinxiang Medical University, Xinxiang, China
| | - Shushuo Xu
- School of Public Health, Xinxiang Medical University, Xinxiang, China
| | - Xinxiao Li
- School of Public Health, Xinxiang Medical University, Xinxiang, China
| | - Penghao Wang
- School of Public Health, Xinxiang Medical University, Xinxiang, China
| | - Meng Hu
- School of Public Health, Xinxiang Medical University, Xinxiang, China
| | - Ning Li
- School of Public Health, North China University of Science and Technology, Tangshan, China
| | - Qiang Zhou
- School of Public Health, North China University of Science and Technology, Tangshan, China
| | - Meiyu Chang
- School of Public Health, North China University of Science and Technology, Tangshan, China
| | - Sanqiao Yao
- School of Public Health, North China University of Science and Technology, Tangshan, China
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Pan D, Wu Q, Zhang C, Qin T, Jiang T, Wu X, Wu F. MYOCD and SRF-mediated MLCK transcription prevents polymorphonuclear neutrophils from ferroptosis in sepsis-related acute lung injury. Immunol Res 2024:10.1007/s12026-024-09529-x. [PMID: 39196520 DOI: 10.1007/s12026-024-09529-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2024] [Accepted: 08/12/2024] [Indexed: 08/29/2024]
Abstract
Persistent activation of polymorphonuclear neutrophils (PMNs) plays a crucial role in the development of sepsis-related acute lung injury (ALI). This study investigated key molecular mechanisms involved in the hyperactivation of PMNs during ALI. A mouse model of sepsis-related ALI was generated by lipopolysaccharide (LPS) injection. RNA sequencing identified myosin light chain kinase (MLCK) as the most significant differentially expressed gene (DEG) between PMNs isolated from model and control mice. Myocardin (MYOCD) and serum response factor (SRF) were two of the DEGs that could promote transcription of MLCK by binding to its promoter. Either knockdown of MLCK, MYOCD, or SRF ameliorated dysfunction and edema in the lungs of LPS-treated mice. Kyoto Encyclopedia of Genes and Genomes enrichment analysis suggested that the DEGs are enriched in a ferroptosis-related signaling pathway. The MLCK, MYOCD, or SRF knockdown increased contents of ROS, MDA, ferritin, and ferrous iron, and reduced levels of GSH and GPX4 in the PMNs. However, the MLCK overexpression restored ferroptosis resistance and activity of the PMNs, resulting in increased lung injury. Collectively, this study demonstrates that MYOCD and SRF-mediated MLCK upregulation is correlated with ferroptosis resistance and hyperactivation of PMNs in sepsis-related ALI.
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Affiliation(s)
- Danfeng Pan
- Department of Pediatrics, The First People's Hospital of Wenling, Wenling, 317500, Zhejiang, P.R. China
| | - Qiu Wu
- Department of Pediatrics, The First People's Hospital of Wenling, Wenling, 317500, Zhejiang, P.R. China
| | - Chunfeng Zhang
- Department of Pediatrics, The First People's Hospital of Wenling, Wenling, 317500, Zhejiang, P.R. China
| | - Tao Qin
- Department of Pediatrics, The First People's Hospital of Wenling, Wenling, 317500, Zhejiang, P.R. China
| | - Tian Jiang
- Department of Clinical Laboratory, The First People's Hospital of Wenling, Wenling, 317500, Zhejiang, P.R. China
| | - Ximei Wu
- Department of Pharmacology, Zhejiang University School of Medicine, Hangzhou, 310058, Zhejiang, P.R. China.
| | - Fugen Wu
- Department of Pediatrics, The First People's Hospital of Wenling, Wenling, 317500, Zhejiang, P.R. China.
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He H, Wang J, Zhang Y, Wang Y, Liu Y, Li X, Zhang Y, Yang J, Hao X, Wang H, Liu H. miR-455-3p regulates lymphangiogenesis in silicosis by regulating VEGF-C/VEGFR3. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 278:116444. [PMID: 38728943 DOI: 10.1016/j.ecoenv.2024.116444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 04/06/2024] [Accepted: 05/05/2024] [Indexed: 05/12/2024]
Abstract
Silicosis is a disease characterized by lung inflammation and fibrosis caused by long-term inhalation of free silicon dioxide (SiO2). Recent studies have found that a large number of lymphatic hyperplasia occurs during the occurrence and development of silicosis. miRNAs play an important role in lymphangiogenesis. However, the regulation and mechanism of miRNAs on lymphangiogenesis in silicosis remain unclear. In this study, lymphangiogenesis was observed in silicosis rats, and VEGF-C-targeted miRNAs were screened, and the effect of miRNAs on the formation of human lymphatic endothelial cells (HLECs) tubular structure was investigated in vitro. The results showed that SiO2 promoted the expressions of Collagen Ι and α-SMA, TNF-α, IL-6 and VEGF-C increased first and then decreased, and promoted the formation of lymphatic vessels. Bioinformatics methods screened miR-455-3p for targeted binding to VEGF-C, and dual luciferase reporter genes confirmed VEGF-C as the target gene of miR-455-3p, and miR-455-3p was down-regulated in the lung tissue of silicosis rats. Transfection of miR-455-3p Inhibitors down-regulated the expression level of miR-455-3p and up-regulated the expression levels of VEGF-C and VEGFR-3 in HLECs, enhanced migration ability and increased tube formation. Transfection of miR-455-3p Mimics showed an opposite trend. These results suggest that miR-455-3p further regulates the tubular structure formation of HLECs by regulating VEGF-C/VEGFR3. Therefore, targeting miR-455-3p may provide a new therapeutic strategy for SiO2-induced silicosis injury.
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Affiliation(s)
- Hailan He
- School of Public Health, North China University of Science and Technology, Tangshan, Hebei 063210, China
| | - Jingsi Wang
- School of Public Health, North China University of Science and Technology, Tangshan, Hebei 063210, China
| | - Yuxi Zhang
- School of Public Health, North China University of Science and Technology, Tangshan, Hebei 063210, China
| | - Yuan Wang
- School of Clinical Medicine, North China University of Science and Technology, Tangshan, Hebei 063210, China
| | - Yi Liu
- School of Public Health, North China University of Science and Technology, Tangshan, Hebei 063210, China
| | - Xiang Li
- 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
| | - Jie Yang
- School of Clinical Medicine, 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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Shan J, Wu MY, Zhang YC, Lin YJ, Cheng B, Gao YR, Liu ZH, Xu HM. Hsa-miR-379 down-regulates Rac1/MLK3/JNK/AP-1/Collagen I cascade reaction by targeting connective tissue growth factor in human alveolar basal epithelial A549 cells. Cytokine 2023; 166:156191. [PMID: 37002970 DOI: 10.1016/j.cyto.2023.156191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 03/22/2023] [Accepted: 03/23/2023] [Indexed: 04/01/2023]
Abstract
OBJECTIVE This study was aimed to screen and identify miRNAs that could regulate human CTGF gene and downstream cascade reaction Rac1/MLK3/JNK/AP-1/Collagen I by bioinformatics and experimental means. METHODS TargetScan and Tarbase were used to predict miRNAs that may have regulatory effects on human CTGF gene. The dual-luciferase reporter gene assay was employed to verify the results obtained in bioinformatics. Human alveolar basal epithelial A549 cells were exposed to silica (SiO2) culture medium for 24 h to establish an in vitro model of pulmonary fibrosis, and bleomycin (BLM) of 100 ng/mL was used as a positive control. The miRNA and mRNA expression levels were determined by RT-qPCR, and the protein levels were measured by western blot in hsa-miR-379-3p overexpression group or not. RESULTS A total of 9 differentially expressed miRNAs that might regulate the human CTGF gene were predicted. Hsa-miR-379-3p and hsa-miR-411-3p were selected for the subsequent experiments. The results of the dual-luciferase reporter assay showed that hsa-miR-379-3p could bind to CTGF, but hsa-miR-411-3p could not. Compared with the control group, SiO2 exposure (25 and 50 μg/mL) could significantly reduce the expression level of hsa-miR-379-3p in A549 cells. SiO2 exposure (50 μg/mL) could significantly increase the mRNA expression levels of CTGF, Collagen I, Rac1, MLK3, JNK, AP1, and VIM in A549 cells, while CDH1 level was significantly decreased. Compared with SiO2 + NC group, the mRNA expression levels of CTGF, Collagen I, Rac1, MLK3, JNK, AP1, and VIM were significantly decreased, and CDH1 level was significantly higher when hsa-miR-379-3p was overexpressed. At the same time, overexpression of hsa-miR-379-3p improved the protein levels of CTGF, Collagen I, c-Jun and phospho-c-Jun, JNK1 and phospho-JNK1 significantly compared with SiO2 + NC group. CONCLUSION Hsa-miR-379-3p was demonstrated for the first time that could directly target and down-regulate human CTGF gene, and further affect the expression levels of key genes and proteins in Rac1/MLK3/JNK/AP-1/Collagen I cascade reaction.
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Zhao M, Li N, Wan C, Zhang Q, Wang H, Jiang C. LncRNA CRNDE is involved in the pathogenesis of renal fibrosis by regulating renal epithelial cell mesenchymal-epithelial transition via targeting miR-29a-3p. Mutat Res 2023; 826:111817. [PMID: 37178498 DOI: 10.1016/j.mrfmmm.2023.111817] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 04/04/2023] [Accepted: 04/20/2023] [Indexed: 05/15/2023]
Abstract
Results of previous studies suggested that renal fibrosis and epithelial-mesenchymal transition (EMT) plays an important role in the process of renal fibrosis, but the underlying mechanism remains unclear. Long coding RNA (lncRNA) CRNDE has emerged as potent regulators of EMT programs, therefore, in present work, we examined the roles of LncRNA CRNDE/miR-29a-3p axis in renal fibrosis and the underlying mechanism. We found that in both renal fibrosis animal and cell models, lncRNA CRNDE was dynamically upregulated in animal models or cells by the treatment of TGF-β. Furthermore, knockdown of CRNDE to rat significantly inhibited EMT, prevented renal fibrosis. Finally, CRNDE regulates renal fibrosis through suppression of miR-29a-3p expression. Together, our results demonstrated that CRNDE acted as a regulator of renal fibrosis via targeting miR-29a-3p. Our findings may provide a potential therapeutic target for the treatment of renal fibrosis.
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Affiliation(s)
- Min Zhao
- Department of Nephrology, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, No.321, Zhongshan Road, Nanjing 210008, Jiangsu, PR China
| | - Nan Li
- Department of Nephrology, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, No.321, Zhongshan Road, Nanjing 210008, Jiangsu, PR China
| | - Cheng Wan
- Department of Nephrology, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, No.321, Zhongshan Road, Nanjing 210008, Jiangsu, PR China
| | - Qingyan Zhang
- Department of Nephrology, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, No.321, Zhongshan Road, Nanjing 210008, Jiangsu, PR China
| | - Hengjin Wang
- Department of Nephrology, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, No.321, Zhongshan Road, Nanjing 210008, Jiangsu, PR China.
| | - Chunming Jiang
- Department of Nephrology, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, No.321, Zhongshan Road, Nanjing 210008, Jiangsu, PR China.
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Tian Y, Cui X, Guan X, Meng X, Zheng M, Wang X, Cheng G, Xia Y, Ye M. Differential expression profile of microRNAs in the lung tissues of coal workers with pneumoconiosis and patients with silicosis. Toxicol Ind Health 2023; 39:204-217. [PMID: 36840710 DOI: 10.1177/07482337231156281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
Abstract
The purpose of this study was to characterize the microRNA (miRNA) profile of the lung tissues from coal workers' pneumoconiosis (CWP) and silicosis and to analyze the changes in downstream genes, biological processes, and signaling pathways based on the differently expressed miRNAs. Lung tissues from three CWP patients, eight silicosis patients, and four healthy controls were collected and analyzed for their miRNA profiles using Affymetrix® GeneChip® miRNA Arrays. Differentially expressed miRNAs (DEMs) were identified between the different groups. The miRanda and TargetScan databases were used to predict the putative target genes, and volcano and heat maps were drawn. Gene ontology (GO) and Kyoto encyclopedia of genes and genomes (KEGG) pathway enrichment analyses were then performed to screen the DEMs-associated biological process and signaling pathways, respectively. Further identification with a comprehensive literature research involving particle exposure, fibrosis, inflammation and lung cancer were used to further screen DEMs of CWP and silicosis. Microarray data showed that 375 and 88 miRNAs were differentially expressed in CWP and silicosis lung tissues compared with healthy lung tissues, while 34 miRNAs were differentially expressed in CWP compared with silicosis lung tissues. The GO and KEGG pathway analyses showed that, the target genes were mainly enriched in the TGF-β, MAPK, p53 and other signal pathways. These results provided insight into the miRNA-related underlying mechanisms of CWP and silicosis, and they provided new clues for miRNAs as biomarkers for the diagnosis and differential diagnosis of these two diseases.
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Affiliation(s)
- Yilin Tian
- National Institute for Occupational Health and Poison Control, 12415Chinese Center for Disease Control and Prevention, Beijing, China
| | - Xiuqing Cui
- Hubei Provincial Key Laboratory for Applied Toxicology, 498598Hubei Provincial Center for Disease Control and Prevention, Hubei, China
| | - Xin Guan
- Department of Occupational and Environmental Health, State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Hubei, China
| | - Xiang Meng
- National Institute for Occupational Health and Poison Control, 12415Chinese Center for Disease Control and Prevention, Beijing, China
| | - Min Zheng
- National Institute for Occupational Health and Poison Control, 12415Chinese Center for Disease Control and Prevention, Beijing, China
| | - Xin Wang
- National Institute for Occupational Health and Poison Control, 12415Chinese Center for Disease Control and Prevention, Beijing, China
| | - Guoping Cheng
- Ward II of Respiratory and Critical Care Medicine, Huangshi Second Hospital, Huangshi, China
| | - Ying Xia
- Hubei Provincial Key Laboratory for Applied Toxicology, 498598Hubei Provincial Center for Disease Control and Prevention, Hubei, China
| | - Meng Ye
- National Institute for Occupational Health and Poison Control, 12415Chinese Center for Disease Control and Prevention, Beijing, China
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Inhibition of Oncogenic Src Ameliorates Silica-Induced Pulmonary Fibrosis via PI3K/AKT Pathway. Int J Mol Sci 2023; 24:ijms24010774. [PMID: 36614217 PMCID: PMC9821169 DOI: 10.3390/ijms24010774] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 12/27/2022] [Accepted: 12/28/2022] [Indexed: 01/03/2023] Open
Abstract
Silicosis is a refractory disease. Previous studies indicate that damaged alveolar epithelial cells act as a driver in pulmonary fibrosis. Our results show that epithelial cells that acquire the mesenchymal phenotype are associated with the pathogenesis of silicosis. c-Src kinase, a non-receptor tyrosine kinase, has been shown to be a positive regulator of organ fibrosis, but specific mechanisms remain unclear and rarely researched in silicosis. The activated Phosphatidylinositol-3 kinases/AKT(PI3K/AKT) pathway promotes fibrosis. We aimed to determine whether c-Src regulates fibrosis via the PI3K/AKT signaling pathway in the development of silicosis. C57/BL mice were intratracheally perfused with 10 mg silica suspension to establish a model of silicosis. In vivo, silica particles induced lung fibrosis. The profibrotic cytokine transforming growth factor-β1 (TGF-β1) exhibited a high expression in pulmonary fibrosis. The phosphorylated c-Src protein was increased and the PI3K/AKT pathway was activated in model lung tissue. In vitro, silica increased the expression of TGF-β1- and TGF-β1-induced mesenchymal phenotype and fibrosis in a mouse epithelial cells line. siRNA-Src inhibited the c-Src, the phosphorylation of the PI3K/AKT pathway, and the mesenchymal phenotype induced by TGF-β1. LY294002, a specific inhibitor of PI3K, suppressed the phosphorylation of PI3K/AKT but did not affect Src activation. SU6656, a selective Src inhibitor, attenuated fibrosis in silicosis model. In summary, c-Src promotes fibrosis via the PI3K/AKT pathway in silica-induced lung fibrosis, and Src kinase inhibitors are potentially effective for silicosis treatment.
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Chinese medicinal plant Polygonum cuspidatum ameliorates silicosis via suppressing the Wnt/β-catenin pathway. OPEN CHEM 2022. [DOI: 10.1515/chem-2022-0266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Abstract
Polygonum cuspidatum (PC) extract has effect on silica-induced pulmonary fibrosis. This study aimed to explore the anti-pulmonary-fibrosis effects and mechanism of PC. Sprague–Dawley rat model was constructed by inhalation of silicon dioxide suspension through tracheal intubation method. And histopathological examination showed that PC inhibited inflammatory cell infiltration, fibrous and collagen hyperplasia, and protected the normal structure of alveoli. TUNEL assay declared that PC retarded cell apoptosis. Meanwhile, up-regulation of basic fibroblast growth factor, plated-derived growth factor, and TNF-α in silicosis rats was decreased by PC addition. In addition, human fetal lung fibroblasts (HFL-1) cells were stimulated with transforming growth factor-β1 (TGF-β1). PC administration increased the proliferation and invasion of TGF-β1-stimulated HFL-1 cells whereas decreased cell apoptosis. Moreover, western blotting exhibited that PC treatment decreased the expression of α-smooth muscle actin, collagen I, and collagen III in silicosis rats and TGF-β1-stimulated HFL-1 cells. Furthermore, the levels of Wnt/β-catenin pathway proteins were up-regulated in silicosis rats and TGF-β1-stimulated HFL-1 cells, which were weakened by PC treatment. Meanwhile, Wnt3a (an activator of Wnt/β-catenin) addition reversed the effect of PC addition. In conclusion, PC prevents silica-induced fibrosis through inhibiting the Wnt/β-catenin pathway.
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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] [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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11
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Li Y, Jin F, Li T, Yang X, Cai W, Li S, Gao X, Mao N, Liu H, Xu H, Yang F. Minute Cellular Nodules as Early Lesions in Rats with Silica Exposure via Inhalation. Vet Sci 2022; 9:vetsci9060251. [PMID: 35737303 PMCID: PMC9227695 DOI: 10.3390/vetsci9060251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 05/21/2022] [Accepted: 05/23/2022] [Indexed: 12/01/2022] Open
Abstract
Mechanisms of silicosis have yet to be clarified, and pathological conditions are inaccurately described in some experimental studies on silicosis. This study was aimed at describing initial lesions in silicosis, as observed in rats with silica exposure via inhalation, and major histopathologic alterations. Male Wistar rats were exposed to silica for 24 weeks. Hematoxylin and eosin staining indicated the presence of “cellular nodule+ macrophage alveolitis” in rats exposed to silica from the 2–16 weeks time points and “fibrotic cellular + cellular nodule” in rats exposed to silica via inhalation for 24 weeks. By immunohistochemistry, the following were noted: a continual increase in the positive expression of CD68 in macrophages in the lungs of rats exposed to silica; hyperplasia in alveolar type II cells (AT2); loss of original phenotypes in fibrotic cellular nodules, macrophages, and AT2 cells; loss of endothelial cells in silicotic nodules; and positive expression of α-smooth muscle actin in macrophages. Typical pathological changes in silicosis were also summarized. Among these changes were macrophage alveolitis, cellular nodules, and fibrotic cellular nodules, including an increase in minute cellular nodules in the early stages and the formation of fibrotic cellular nodules in the late stages.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Hong Xu
- Correspondence: (H.X.); (F.Y.); Tel.: +86-151-33967479 (H.X.); +86-188-32571018 (F.Y.)
| | - Fang Yang
- Correspondence: (H.X.); (F.Y.); Tel.: +86-151-33967479 (H.X.); +86-188-32571018 (F.Y.)
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12
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Abstract
MicroRNAs (miRNAs) are key players in gene regulation that target specific mRNAs for degradation or translational repression. Each miRNA is synthesized as a miRNA duplex comprising two strands (5p and 3p). However, only one of the two strands becomes active and is selectively incorporated into the RNA-induced silencing complex in a process known as miRNA strand selection. Recently, significant progress has been made in understanding the factors and processes involved in strand selection. Here, we explore the selection and functionality of the miRNA star strand (either 5p or 3p), which is generally present in the cell at low levels compared to its partner strand and, historically, has been thought to possess no biological activity. We also highlight the concepts of miRNA arm switching and miRNA isomerism. Finally, we offer insights into the impact of aberrant strand selection on immunity and cancer. Leading us through this journey is miR-155, a well-established regulator of immunity and cancer, and the increasing evidence that its 3p strand plays a role in these arenas. Interestingly, the miR-155-5p/-3p ratio appears to vary dependent on the timing of the immune response, and the 3p strand seems to play a regulatory role upon its partner 5p strand.
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Affiliation(s)
- Owen Dawson
- School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, UK
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13
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Early Identification, Accurate Diagnosis, and Treatment of Silicosis. Can Respir J 2022; 2022:3769134. [PMID: 35509892 PMCID: PMC9061058 DOI: 10.1155/2022/3769134] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 04/05/2022] [Accepted: 04/15/2022] [Indexed: 12/04/2022] Open
Abstract
Silicosis is a global problem, and it has brought about great burdens to society and patients' families. The etiology of silicosis is clear, preventable, and controllable, but the onset is hidden and the duration is long. Thus, it is difficult to diagnose it early and treat it effectively, leaving workers unaware of the consequences of dust exposure. As such, a lack of details in the work history and a slow progression of lung disease contribute to the deterioration of patients until silicosis has advanced to fibrosis. These issues are the key factors impeding the diagnosis and the treatment of silicosis. This article reviews the literature on the early identification, diagnosis, and treatment of silicosis as well as analyzes the difficulties in the diagnosis and the treatment of silicosis and discusses its direction of future development.
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14
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Aissa AF, Tryndyak VP, de Conti A, Rita Thomazela Machado A, Tuttis K, da Silva Machado C, Hernandes LC, Wellington da Silva Santos P, Mara Serpeloni J, P Pogribny I, Maria Greggi Antunes L. Epigenetic changes induced in mice liver by methionine-supplemented and methionine-deficient diets. Food Chem Toxicol 2022; 163:112938. [PMID: 35314295 DOI: 10.1016/j.fct.2022.112938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 03/10/2022] [Accepted: 03/16/2022] [Indexed: 02/07/2023]
Abstract
A diet deficient in donors of methyl group, such as methionine, affects DNA methylation and hepatic lipid metabolism. Methionine also affects other epigenetic mechanisms, such as microRNAs. We investigated the effects of methionine-supplemented or methionine-deficient diets on the expression of chromatin-modifying genes, global DNA methylation, the expression and methylation of genes related to lipid metabolism, and the expression of microRNAs in mouse liver. Female Swiss albino mice were fed a control diet (0.3% methionine), a methionine-supplemented diet (2% methionine), and a methionine-deficient diet (0% methionine) for 10 weeks. The genes most affected by the methionine-supplemented diet were associated with histone and DNA methyltransferases activity, while the methionine-deficient diet mostly altered the expression of histone methyltransferases genes. Both diets altered the global DNA methylation and the expression and gene-specific methylation of the lipid metabolism gene Apoa5. Both diets altered the expression of several liver homeostasis-related microRNAs, including miR-190b-5p, miR-130b-3p, miR-376c-3p, miR-411-5p, miR-29c-3p, miR-295-3p, and miR-467d-5p, with the methionine-deficient diet causing a more substantial effect. The effects of improper amounts of methionine in the diet on liver pathologies may involve a cooperative action of chromatin-modifying genes, which results in an aberrant pattern of global and gene-specific methylation, and microRNAs responsible for liver homeostasis.
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Affiliation(s)
- Alexandre Ferro Aissa
- Department of Genetics, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Volodymyr P Tryndyak
- Division of Biochemical Toxicology, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR, USA
| | - Aline de Conti
- Division of Biochemical Toxicology, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR, USA
| | - Ana Rita Thomazela Machado
- Departament of Clinical Analysis, Toxicology and Food Science, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Katiuska Tuttis
- Department of Genetics, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Carla da Silva Machado
- Department of Genetics, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Lívia Cristina Hernandes
- Departament of Clinical Analysis, Toxicology and Food Science, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Patrick Wellington da Silva Santos
- Departament of Clinical Analysis, Toxicology and Food Science, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Juliana Mara Serpeloni
- Department of General Biology, Center of Biological Sciences, State University of Londrina (UEL), Londrina, PR, Brazil
| | - Igor P Pogribny
- Division of Biochemical Toxicology, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR, USA
| | - Lusânia Maria Greggi Antunes
- Departament of Clinical Analysis, Toxicology and Food Science, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil.
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15
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Oxamate Attenuates Glycolysis and ER Stress in Silicotic Mice. Int J Mol Sci 2022; 23:ijms23063013. [PMID: 35328434 PMCID: PMC8953611 DOI: 10.3390/ijms23063013] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 03/07/2022] [Accepted: 03/08/2022] [Indexed: 12/12/2022] Open
Abstract
Glycolysis and ER stress have been considered important drivers of pulmonary fibrosis. However, it is not clear whether glycolysis and ER stress are interconnected and if those interconnections regulate the development of pulmonary fibrosis. Our previous studies found that the expression of LDHA, a key enzyme involved in glycolysis, was increased in silica-induced macrophages and silicotic models, and it was closely related to silicosis fibrosis by participating in inflammatory response. However, whether pharmacological inhibition of LDHA is beneficial to the amelioration of silicosis fibrosis remains unclear. In this study, we investigated the effects of oxamate, a potent inhibitor of LDHA, on the regulation of glycolysis and ER stress in alveolar macrophages and silicotic mice. We found that silica induced the upregulation of glycolysis and the expression of key enzymes directly involved in ER stress in NR8383 macrophages. However, treatment of the macrophages and silicotic mice with oxamate attenuated glycolysis and ER stress by inhibiting LDHA, causing a decrease in the production of lactate. Therefore, oxamate demonstrated an anti-fibrotic role by reducing glycolysis and ER stress in silicotic mice.
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16
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Jiang P, Ma X, Han S, Ma L, Ai J, Wu L, Zhang Y, Xiao H, Tian M, Tao WA, Zhang S, Chai R. Characterization of the microRNA transcriptomes and proteomics of cochlear tissue-derived small extracellular vesicles from mice of different ages after birth. Cell Mol Life Sci 2022; 79:154. [PMID: 35218422 PMCID: PMC11072265 DOI: 10.1007/s00018-022-04164-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 12/30/2021] [Accepted: 01/23/2022] [Indexed: 12/22/2022]
Abstract
The cochlea is an important sensory organ for both balance and sound perception, and the formation of the cochlea is a complex developmental process. The development of the mouse cochlea begins on embryonic day (E)9 and continues until postnatal day (P)21 when the hearing system is considered mature. Small extracellular vesicles (sEVs), with a diameter ranging from 30 to 200 nm, have been considered a significant medium for information communication in both physiological and pathological processes. However, there are no studies exploring the role of sEVs in the development of the cochlea. Here, we isolated tissue-derived sEVs from the cochleae of FVB mice at P3, P7, P14, and P21 by ultracentrifugation. These sEVs were first characterized by transmission electron microscopy, nanoparticle tracking analysis, and western blotting. Next, we used small RNA-seq and mass spectrometry to characterize the microRNA transcriptomes and proteomes of cochlear sEVs from mice at different ages. Many microRNAs and proteins were discovered to be related to inner ear development, anatomical structure development, and auditory nervous system development. These results all suggest that sEVs exist in the cochlea and are likely to be essential for the normal development of the auditory system. Our findings provide many sEV microRNA and protein targets for future studies of the roles of cochlear sEVs.
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Affiliation(s)
- Pei Jiang
- State Key Laboratory of Bioelectronics, Department of Otolaryngology Head and Neck Surgery, Zhongda Hospital, School of Life Sciences and Technology, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, 210096, China
| | - Xiangyu Ma
- State Key Laboratory of Bioelectronics, Department of Otolaryngology Head and Neck Surgery, Zhongda Hospital, School of Life Sciences and Technology, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, 210096, China
| | - Shanying Han
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Leyao Ma
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Jingru Ai
- State Key Laboratory of Bioelectronics, Department of Otolaryngology Head and Neck Surgery, Zhongda Hospital, School of Life Sciences and Technology, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, 210096, China
| | - Leilei Wu
- State Key Laboratory of Bioelectronics, Department of Otolaryngology Head and Neck Surgery, Zhongda Hospital, School of Life Sciences and Technology, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, 210096, China
| | - Yuan Zhang
- State Key Laboratory of Bioelectronics, Department of Otolaryngology Head and Neck Surgery, Zhongda Hospital, School of Life Sciences and Technology, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, 210096, China
| | - Hairong Xiao
- State Key Laboratory of Bioelectronics, Department of Otolaryngology Head and Neck Surgery, Zhongda Hospital, School of Life Sciences and Technology, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, 210096, China
| | - Mengyao Tian
- State Key Laboratory of Bioelectronics, Department of Otolaryngology Head and Neck Surgery, Zhongda Hospital, School of Life Sciences and Technology, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, 210096, China
| | - W Andy Tao
- Department of Chemistry, Department of Biochemistry, Purdue University, West Lafayette, Indiana, 47907, USA.
- Center for Cancer Research, Purdue University, West Lafayette, Indiana, 47907, USA.
| | - Shasha Zhang
- State Key Laboratory of Bioelectronics, Department of Otolaryngology Head and Neck Surgery, Zhongda Hospital, School of Life Sciences and Technology, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, 210096, China.
| | - Renjie Chai
- State Key Laboratory of Bioelectronics, Department of Otolaryngology Head and Neck Surgery, Zhongda Hospital, School of Life Sciences and Technology, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, 210096, China.
- Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, 226001, China.
- Department of Otolaryngology Head and Neck Surgery, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China.
- Institute for Stem Cell and Regeneration, Chinese Academy of Science, Beijing, China.
- Beijing Key Laboratory of Neural Regeneration and Repair, Capital Medical University, Beijing, 100069, China.
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17
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Valacchi G, Pambianchi E, Coco S, Pulliero A, Izzotti A. MicroRNA Alterations Induced in Human Skin by Diesel Fumes, Ozone, and UV Radiation. J Pers Med 2022; 12:176. [PMID: 35207665 PMCID: PMC8880698 DOI: 10.3390/jpm12020176] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 01/21/2022] [Accepted: 01/24/2022] [Indexed: 11/17/2022] Open
Abstract
Epigenetic alterations are a driving force of the carcinogenesis process. MicroRNAs play a role in silencing mutated oncogenes, thus defending the cell against the adverse consequences of genotoxic damages induced by environmental pollutants. These processes have been well investigated in lungs; however, although skin is directly exposed to a great variety of environmental pollutants, more research is needed to better understand the effect on cutaneous tissue. Therefore, we investigated microRNA alteration in human skin biopsies exposed to diesel fumes, ozone, and UV light for over 24 h of exposure. UV and ozone-induced microRNA alteration right after exposure, while the peak of their deregulations induced by diesel fumes was reached only at the end of the 24 h. Diesel fumes mainly altered microRNAs involved in the carcinogenesis process, ozone in apoptosis, and UV in DNA repair. Accordingly, each tested pollutant induced a specific pattern of microRNA alteration in skin related to the intrinsic mechanisms activated by the specific pollutant. These alterations, over a short time basis, reflect adaptive events aimed at defending the tissue against damages. Conversely, whenever environmental exposure lasts for a long time, the irreversible alteration of the microRNA machinery results in epigenetic damage contributing to the pathogenesis of inflammation, dysplasia, and cancer induced by environmental pollutants.
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Affiliation(s)
- Giuseppe Valacchi
- Animal Science Department, Plants for Human Health Institute, North Carolina State University, Research Campus Kannapolis, Kannapolis, NC 28081, USA; (G.V.); (E.P.)
- Department of Environmental Sciences and Prevention, University of Ferrara, 44121 Ferrara, Italy
- Department of Food and Nutrition, Kyung Hee University, Seoul 130-701, Korea
| | - Erika Pambianchi
- Animal Science Department, Plants for Human Health Institute, North Carolina State University, Research Campus Kannapolis, Kannapolis, NC 28081, USA; (G.V.); (E.P.)
| | - Simona Coco
- Lung Cancer Unit, IRCCS Ospedale Policlinico San Martino, 16132 Genova, Italy;
| | | | - Alberto Izzotti
- Department of Experimental Medicine, University of Genova, 16132 Genova, Italy
- UOC Mutagenesis and Cancer Prevention, IRCCS San Martino Hospital, 16132 Genova, Italy
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18
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Li Y, Cheng Z, Fan H, Hao C, Yao W. Epigenetic Changes and Functions in Pneumoconiosis. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:2523066. [PMID: 35096264 PMCID: PMC8794660 DOI: 10.1155/2022/2523066] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 12/23/2021] [Indexed: 11/21/2022]
Abstract
Pneumoconiosis is one of the most common occupational diseases in the world, and specific treatment methods of pneumoconiosis are lacking at present, so it carries great social and economic burdens. Pneumoconiosis, coronavirus disease 2019, and idiopathic pulmonary fibrosis all have similar typical pathological changes-pulmonary fibrosis. Pulmonary fibrosis is a chronic lung disease characterized by excessive deposition of the extracellular matrix and remodeling of the lung tissue structure. Clarifying the pathogenesis of pneumoconiosis plays an important guiding role in its treatment. The occurrence and development of pneumoconiosis are accompanied by epigenetic factors (e.g., DNA methylation and noncoding RNA) changes, which in turn can promote or inhibit the process of pneumoconiosis. Here, we summarize epigenetic changes and functions in the several kinds of evidence classification (epidemiological investigation, in vivo, and in vitro experiments) and main types of cells (macrophages, fibroblasts, and alveolar epithelial cells) to provide some clues for finding specific therapeutic targets for pneumoconiosis and even for pulmonary fibrosis.
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Affiliation(s)
- Yiping Li
- Department of Occupational and Environmental Health, College of Public Health, Zhengzhou University, No. 100 Science Avenue, Zhengzhou City, Henan Province, China
| | - Zhiwei Cheng
- Department of Case Management, The Third Affiliated Hospital of Zhengzhou University, China
| | - Hui Fan
- Ultrasonography Department, The Third Affiliated Hospital of Zhengzhou University, China
| | - Changfu Hao
- Department of Child and Adolecence Health, School of Public Health, Zhengzhou University, Henan, 450001, China
| | - Wu Yao
- Department of Occupational and Environmental Health, College of Public Health, Zhengzhou University, No. 100 Science Avenue, Zhengzhou City, Henan Province, China
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19
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Song M, Zhang Y, Sun Y, Kong M, Han S, Wang C, Wang Y, Xu D, Tu Q, Zhu K, Sun C, Li G, Zhao H, Ma X. Inhibition of RhoA/MRTF-A signaling alleviates nucleus pulposus fibrosis induced by mechanical stress overload. Connect Tissue Res 2022; 63:53-68. [PMID: 34420462 DOI: 10.1080/03008207.2021.1952193] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
PURPOSE/AIM : Intervertebral disc degeneration (IDD) is the leading cause of lower back pain, and clinically useful drugs for IDD are unavailable. Mechanical stress overload-induced fibrosis plays a critical role in IDD. RhoA/MRTF-A signaling is known to regulate tissue fibrosis; however, the effect of RhoA/MRTF-A on the development of IDD is unclear. MATERIALS AND METHODS : The expression of aggrecan, collagen I, collagen II, MMP-12, CTGF, and MRTF-A in nucleus pulposus (NP) samples from IDD patients and controls was detected by immunohistochemical staining. Primary nucleus pulposus cells (NPCs) were isolated and cultured to establish an overload strain model treated with or without CCG-1423. The protein levels of RhoA, ROCK2, MRTF-A, CTGF, and MMP-12 as well as fibrosis-associated proteins were detected by western blotting and immunofluorescence. RESULTS : Collagen I, MMP-12, and CTGF were significantly upregulated, and aggrecan and collagen II were significantly downregulated in the IDD samples. The cellular localization of MRTF-A was associated with intervertebral disc (IVD) degeneration. Overloaded strain enhanced the nuclear translocation of MRTF-A and changed the NPC morphology from spindle-shaped to long strips. Additional experiments showed that RhoA, ROCK2, MRTF-A, SRF, MMP-12, and CTGF were upregulated; however, aggrecan and collagen II were downregulated in NPCs under overload strain. CCG-1423, a RhoA/MRTF-A pathway inhibitor, reversed strain-induced fibrosis. CONCLUSION : Mechanical stress activates RhoA/MRTF-A signaling to promote extracellular matrix (ECM) degeneration in the NP, which is associated with the development of IDD. Our findings suggest that the RhoA/MRTF-A inhibitor CCG-1423 can alleviate NPC degeneration caused by overload stress and has potential as a therapeutic agent for IDD.
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Affiliation(s)
- Mengxiong Song
- Department of Orthopaedic Surgery, Minhang Hospital, Fudan University, Shanghai, China
| | - Yiran Zhang
- Shandong Institute of Orthopaedics and Traumatology, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Yi Sun
- Department of Orthopaedics, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Meng Kong
- Department of Orthopaedics, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Shuo Han
- Department of Orthopaedics, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Chao Wang
- Department of Orthopaedics, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Yan Wang
- Department of Orthopaedics, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Derong Xu
- Department of Orthopaedics, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Qihao Tu
- Department of Orthopaedics, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Kai Zhu
- Department of Orthopaedics, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Chong Sun
- Department of Orthopaedics, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Guanghui Li
- Department of Orthopaedics, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Han Zhao
- Department of Pathology, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xuexiao Ma
- Department of Orthopaedics, Affiliated Hospital of Qingdao University, Qingdao, China
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20
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Zhang Z, Gao X, He Y, Kang Y, Jin F, Li Y, Li T, Wei Z, Li S, Cai W, Mao N, Wang S, Liu H, Yang F, Xu H, Yang J. MicroRNA-411-3p inhibits bleomycin-induced skin fibrosis by regulating transforming growth factor-β/Smad ubiquitin regulatory factor-2 signalling. J Cell Mol Med 2021; 25:11290-11299. [PMID: 34783198 PMCID: PMC8650044 DOI: 10.1111/jcmm.17055] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 10/12/2021] [Accepted: 10/26/2021] [Indexed: 12/20/2022] Open
Abstract
Skin fibrosis, which is characterized by fibroblast proliferation and increased extracellular matrix, has no effective treatment. An increasing number of studies have shown that microRNAs (miRNAs/miRs) participate in the mechanism of skin fibrosis, such as in limited cutaneous systemic sclerosis and pathological scarring. The objective of the present study was to determine the role of miR‐411‐3p in bleomycin (BLM)‐induced skin fibrosis and skin fibroblast transformation. Using Western blot analysis and real‐time quantitative polymerase chain reaction assess the expression levels of miR‐411‐3p, collagen (COLI) and transforming growth factor (TGF)‐β/Smad ubiquitin regulatory factor (Smurf)‐2/Smad signalling factors both in vitro and in vivo with or without BLM. To explore the regulatory relationship between miR‐411‐3p and Smurf2, we used the luciferase reporter assay. Furthermore, miR‐411‐3p overexpression was identified in vitro and in vivo via transfection with Lipofectamine 2000 reagent and injection. Finally, we tested the dermal layer of the skin using haematoxylin and eosin and Van Gieson's staining. We found that miR‐411‐3p expression was decreased in bleomycin (BLM)‐induced skin fibrosis and fibroblasts. However, BLM accelerated transforming growth factor (TGF)‐β signalling and collagen production. Overexpression of miR‐411‐3p inhibited the expression of collagen, F‐actin and the TGF‐β/Smad signalling pathway factors in BLM‐induced skin fibrosis and fibroblasts. In addition, miR‐411‐3p inhibited the target Smad ubiquitin regulatory factor (Smurf)‐2. Furthermore, Smurf2 was silenced, which attenuated the expression of collagen via suppression of the TGF‐β/Smad signalling pathway. We demonstrated that miR‐411‐3p exerts antifibrotic effects by inhibiting the TGF‐β/Smad signalling pathway via targeting of Smurf2 in skin fibrosis.
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Affiliation(s)
- Ziyan Zhang
- Department of Dermatology, Affiliated Hospital of North China University of Science and Technology, Tangshan, Hebei Province, People's Republic of China
| | - Xuemin Gao
- School of Public Health, Hebei Key Laboratory for Organ Fibrosis Research, North China University of Science and Technology, Tangshan, Hebei Province, People's Republic of China
| | - Yang He
- Department of Dermatology, Affiliated Hospital of North China University of Science and Technology, Tangshan, Hebei Province, People's Republic of China
| | - Yumeng Kang
- Department of Dermatology, Affiliated Hospital of North China University of Science and Technology, Tangshan, Hebei Province, People's Republic of China
| | - Fuyu Jin
- School of Public Health, Hebei Key Laboratory for Organ Fibrosis Research, North China University of Science and Technology, Tangshan, Hebei Province, People's Republic of China
| | - Yaqian Li
- School of Public Health, Hebei Key Laboratory for Organ Fibrosis Research, North China University of Science and Technology, Tangshan, Hebei Province, People's Republic of China
| | - Tian Li
- School of Public Health, Hebei Key Laboratory for Organ Fibrosis Research, North China University of Science and Technology, Tangshan, Hebei Province, People's Republic of China
| | - Zhongqiu Wei
- School of Public Health, Hebei Key Laboratory for Organ Fibrosis Research, North China University of Science and Technology, Tangshan, Hebei Province, People's Republic of China
| | - Shifeng Li
- School of Public Health, Hebei Key Laboratory for Organ Fibrosis Research, North China University of Science and Technology, Tangshan, Hebei Province, People's Republic of China
| | - Wenchen Cai
- School of Public Health, Hebei Key Laboratory for Organ Fibrosis Research, North China University of Science and Technology, Tangshan, Hebei Province, People's Republic of China
| | - Na Mao
- School of Public Health, Hebei Key Laboratory for Organ Fibrosis Research, North China University of Science and Technology, Tangshan, Hebei Province, People's Republic of China
| | - Shan Wang
- Department of Dermatology, Affiliated Hospital of North China University of Science and Technology, Tangshan, Hebei Province, People's Republic of China
| | - Heliang Liu
- School of Public Health, Hebei Key Laboratory for Organ Fibrosis Research, North China University of Science and Technology, Tangshan, Hebei Province, People's Republic of China
| | - Fang Yang
- School of Public Health, Hebei Key Laboratory for Organ Fibrosis Research, North China University of Science and Technology, Tangshan, Hebei Province, People's Republic of China
| | - Hong Xu
- School of Public Health, Hebei Key Laboratory for Organ Fibrosis Research, North China University of Science and Technology, Tangshan, Hebei Province, People's Republic of China
| | - Jie Yang
- Department of Dermatology, Affiliated Hospital of North China University of Science and Technology, Tangshan, Hebei Province, People's Republic of China
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21
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Ning J, Du H, Zhang Y, Liu Q, Jiang T, Pang Y, Tian X, Yan L, Niu Y, Zhang R. N6-methyladenosine modification of CDH1 mRNA promotes PM2.5-induced pulmonary fibrosis via mediating epithelial mesenchymal transition. Toxicol Sci 2021; 185:143-157. [PMID: 34735003 DOI: 10.1093/toxsci/kfab133] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The association between ambient airborne fine particulate matter (PM2.5) exposure and respiratory diseases has been investigated in epidemiological studies. To explore the potential mechanism of PM2.5-induced pulmonary fibrosis, sixty mice were divided into 3 groups to expose to different levels of PM2.5 for 8 and 16 weeks: filtered air (FA), unfiltered air (UA) and concentrated PM2.5 air (CA), respectively. BEAS-2B cells were treated with 0, 25, 50 and 100 μg/ml PM2.5 for 24 h. The biomarkers of pulmonary fibrosis, epithelial-mesenchymal transition (EMT), N6-methyladenosine (m6A) modification and metabolism of mRNAs were detected to characterize the effect of PM2.5 exposure. The results illustrated that PM2.5 exposure induced pathological alteration and pulmonary fibrosis in mice. The expression of E-cadherin (E-cad) was decreased whereas vimentin and N-cadherin (N-cad) expression were increased in a dose- and time-dependent manner after PM2.5 exposure. Mechanistically, PM2.5 exposure increased the levels of METTL3-mediated m6A modification of CDH1 mRNA. As a target gene of miR-494-3p, YTHDF2 was up-regulated by miR-494-3p down-regulation and then recognized m6A-modified CDH1 mRNA to inhibit the E-cad expression, consequently induced the EMT progression after PM2.5 exposure. Our study indicated that PM2.5 exposure triggered EMT progression to promote the pulmonary fibrosis via miR-494-3p/YTHDF2 recognized and METTL3 mediated m6A modification.
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Affiliation(s)
- Jie Ning
- Department of Toxicology, School of Public Health, Hebei Medical University, Shijiazhuang, 050017, PR China
| | - Hairong Du
- Guangming District Center for Disease Control and Prevention, Shenzhen, 518016, China Guangdong PR
| | - Yaling Zhang
- Department of Toxicology, School of Public Health, Hebei Medical University, Shijiazhuang, 050017, PR China
| | - Qingping Liu
- Department of Toxicology, School of Public Health, Hebei Medical University, Shijiazhuang, 050017, PR China
| | - Tao Jiang
- Department of Toxicology, School of Public Health, Hebei Medical University, Shijiazhuang, 050017, PR China
| | - Yaxian Pang
- Department of Toxicology, School of Public Health, Hebei Medical University, Shijiazhuang, 050017, PR China
| | - Xiaochen Tian
- Department of Orthopaedic Surgery, Shijiazhuang People's Hospital, Shijiazhuang, 050011, PR China
| | - Liqun Yan
- Departments of Radiology, Second Hospital of Hebei Medical University, Shijiazhuang, PR, 050000, China
| | - Yujie Niu
- Department of Occupation Health and Environmental Health, School of Public Health, Hebei Medical University, Shijiazhuang, 050017, PR China.,Hebei Key Laboratory of Environment and Human Health, Shijiazhuang, 050017, PR China
| | - Rong Zhang
- Department of Toxicology, School of Public Health, Hebei Medical University, Shijiazhuang, 050017, PR China.,Hebei Key Laboratory of Environment and Human Health, Shijiazhuang, 050017, PR China
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22
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Wang ZJ, Yu H, Hao JJ, Peng Y, Yin TT, Qiu YN. PM 2.5 promotes Drp1-mediated mitophagy to induce hepatic stellate cell activation and hepatic fibrosis via regulating miR-411. Exp Cell Res 2021; 407:112828. [PMID: 34508745 DOI: 10.1016/j.yexcr.2021.112828] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 08/30/2021] [Accepted: 09/06/2021] [Indexed: 12/12/2022]
Abstract
BACKGROUND Particulate matter≤ 2.5 μm (PM2.5) is a type of environmental agent associated with air pollution, which induces hepatic fibrosis. However, the function and mechanism of PM2.5 on hepatic stellate cell (HSC) proliferation and fibrosis remain largely unknown. METHODS Human HSC line (LX-2) and murine HSCs were exposed to various doses of PM2.5. microRNA (miR)-411 expression was detected via quantitative reverse transcription polymerase chain reaction (qRT-PCR). Cell proliferation, fibrosis, mitochondrial dynamics dysfunction and mitophagy were determined via cell counting kit-8 (CCK-8), qRT-PCR, Western blotting and immunofluorescence. RESULTS PM2.5 facilitated HSC proliferation and fibrosis via increasing the levels of ACTA2, Collagen 1, TIMP1 and TGF-β1. PM2.5 reduced miR-411 expression, and contributed to mitochondrial dynamics dysfunction via increasing Drp1 and decreasing OPA1, TOM20 and PGC-1α levels. PM2.5 promoted mitophagy by upregulating the levels of Beclin-1, LC3II/I, PINK1 and Parkin. miR-411 overexpression or autophagy blockage using 3-methyladenine (3-MA) relieved PM2.5-mediated cell proliferation and fibrosis-associated factor expression in HSCs. Drp1 was targeted by miR-411. miR-411 mitigated PM2.5-induced mitophagy via targeting Drp1. Drp1 overexpression abolished the inhibitory role of miR-411 in cell proliferation and fibrosis-associated factor levels in HSCs. CONCLUSION PM2.5 induced HSC activation and fibrosis via promoting Drp1-mediated mitophagy by decreasing miR-411, thereby causing liver fibrosis.
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Affiliation(s)
- Zhong-Jian Wang
- Department of Pediatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, PR China
| | - Hui Yu
- Department of Pediatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, PR China
| | - Jin-Jin Hao
- Department of Pediatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, PR China
| | - Yun Peng
- Department of Pediatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, PR China
| | - Tian-Tian Yin
- Department of Pediatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, PR China
| | - Yi-Ning Qiu
- Department of Pediatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, PR China.
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23
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Mao N, Yang H, Yin J, Li Y, Jin F, Li T, Yang X, Sun Y, Liu H, Xu H, Yang F. Glycolytic Reprogramming in Silica-Induced Lung Macrophages and Silicosis Reversed by Ac-SDKP Treatment. Int J Mol Sci 2021; 22:ijms221810063. [PMID: 34576239 PMCID: PMC8465686 DOI: 10.3390/ijms221810063] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 09/15/2021] [Accepted: 09/15/2021] [Indexed: 02/06/2023] Open
Abstract
Glycolytic reprogramming is an important metabolic feature in the development of pulmonary fibrosis. However, the specific mechanism of glycolysis in silicosis is still not clear. In this study, silicotic models and silica-induced macrophage were used to elucidate the mechanism of glycolysis induced by silica. Expression levels of the key enzymes in glycolysis and macrophage activation indicators were analyzed by Western blot, qRT-PCR, IHC, and IF analyses, and by using a lactate assay kit. We found that silica promotes the expression of the key glycolysis enzymes HK2, PKM2, LDHA, and macrophage activation factors iNOS, TNF-α, Arg-1, IL-10, and MCP1 in silicotic rats and silica-induced NR8383 macrophages. The enhancement of glycolysis and macrophage activation induced by silica was reduced by Ac-SDKP or siRNA-Ldha treatment. This study suggests that Ac-SDKP treatment can inhibit glycolytic reprogramming in silica-induced lung macrophages and silicosis.
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Affiliation(s)
- Na Mao
- Hebei Key Laboratory for Organ Fibrosis Research, School of Public Health, North China University of Science and Technology, Tangshan 063210, China; (N.M.); (H.Y.); (J.Y.); (Y.L.); (F.J.); (H.L.)
| | - Honghao Yang
- Hebei Key Laboratory for Organ Fibrosis Research, School of Public Health, North China University of Science and Technology, Tangshan 063210, China; (N.M.); (H.Y.); (J.Y.); (Y.L.); (F.J.); (H.L.)
| | - Jie Yin
- Hebei Key Laboratory for Organ Fibrosis Research, School of Public Health, North China University of Science and Technology, Tangshan 063210, China; (N.M.); (H.Y.); (J.Y.); (Y.L.); (F.J.); (H.L.)
| | - Yaqian Li
- Hebei Key Laboratory for Organ Fibrosis Research, School of Public Health, North China University of Science and Technology, Tangshan 063210, China; (N.M.); (H.Y.); (J.Y.); (Y.L.); (F.J.); (H.L.)
| | - Fuyu Jin
- Hebei Key Laboratory for Organ Fibrosis Research, School of Public Health, North China University of Science and Technology, Tangshan 063210, China; (N.M.); (H.Y.); (J.Y.); (Y.L.); (F.J.); (H.L.)
| | - Tian Li
- Hebei Key Laboratory for Chronic Diseases, Basic Medical College, North China University of Science and Technology, Tangshan 063210, China; (T.L.); (X.Y.); (Y.S.)
| | - Xinyu Yang
- Hebei Key Laboratory for Chronic Diseases, Basic Medical College, North China University of Science and Technology, Tangshan 063210, China; (T.L.); (X.Y.); (Y.S.)
| | - Ying Sun
- Hebei Key Laboratory for Chronic Diseases, Basic Medical College, North China University of Science and Technology, Tangshan 063210, China; (T.L.); (X.Y.); (Y.S.)
| | - Heliang Liu
- Hebei Key Laboratory for Organ Fibrosis Research, School of Public Health, North China University of Science and Technology, Tangshan 063210, China; (N.M.); (H.Y.); (J.Y.); (Y.L.); (F.J.); (H.L.)
| | - Hong Xu
- Hebei Key Laboratory for Organ Fibrosis Research, School of Public Health, North China University of Science and Technology, Tangshan 063210, China; (N.M.); (H.Y.); (J.Y.); (Y.L.); (F.J.); (H.L.)
- Correspondence: (H.X.); (F.Y.); Tel.: +86-15133967479 (H.X.); +86-18832571018 (F.Y.); Fax: +86-315-8805522 (F.Y.)
| | - Fang Yang
- Hebei Key Laboratory for Organ Fibrosis Research, School of Public Health, North China University of Science and Technology, Tangshan 063210, China; (N.M.); (H.Y.); (J.Y.); (Y.L.); (F.J.); (H.L.)
- Correspondence: (H.X.); (F.Y.); Tel.: +86-15133967479 (H.X.); +86-18832571018 (F.Y.); Fax: +86-315-8805522 (F.Y.)
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OC-STAMP Overexpression Drives Lung Alveolar Epithelial Cell Type II Senescence in Silicosis. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:4158495. [PMID: 34426759 PMCID: PMC8380176 DOI: 10.1155/2021/4158495] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Accepted: 07/27/2021] [Indexed: 02/05/2023]
Abstract
Cellular senescence has been considered an important driver of many chronic lung diseases. However, the specific mechanism of cellular senescence in silicosis is still unknown. In the present study, silicotic rats and osteoclast stimulatory transmembrane protein (Ocstamp) overexpression of MLE-12 cells were used to explore the mechanism of OC-STAMP in cellular senescence in alveolar epithelial cell type II (AEC2). We found an increasing level of OC-STAMP in AEC2 of silicotic rats. Overexpression of Ocstamp in MLE-12 cells promoted epithelial-mesenchymal transition (EMT), endoplasmic reticulum (ER) stress, and cellular senescence. Myosin heavy chain 9 (MYH9) was a potential interacting protein of OC-STAMP. Knockdown of Ocstamp or Myh9 inhibited cellular senescence in MLE-12 cells transfected with pcmv6-Ocstamp. Treatment with 4-phenylbutyrate (4-PBA) to inhibit ER stress also attenuated cellular senescence in vitro or in vivo. In conclusion, OC-STAMP promotes cellular senescence in AEC2 in silicosis.
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25
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Cheng D, Xu Q, Wang Y, Li G, Sun W, Ma D, Zhou S, Liu Y, Han L, Ni C. Metformin attenuates silica-induced pulmonary fibrosis via AMPK signaling. J Transl Med 2021; 19:349. [PMID: 34399790 PMCID: PMC8365894 DOI: 10.1186/s12967-021-03036-5] [Citation(s) in RCA: 63] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Accepted: 08/09/2021] [Indexed: 02/08/2023] Open
Abstract
Background Silicosis is one of the most common occupational pulmonary fibrosis caused by respirable silica-based particle exposure, with no ideal drugs at present. Metformin, a commonly used biguanide antidiabetic agent, could activate AMP-activated protein kinase (AMPK) to exert its pharmacological action. Therefore, we sought to investigate the role of metformin in silica-induced lung fibrosis. Methods The anti-fibrotic role of metformin was assessed in 50 mg/kg silica-induced lung fibrosis model. Silicon dioxide (SiO2)-stimulated lung epithelial cells/macrophages and transforming growth factor-beta 1 (TGF-β1)-induced differentiated lung fibroblasts were used for in vitro models. Results At the concentration of 300 mg/kg in the mouse model, metformin significantly reduced lung inflammation and fibrosis in SiO2-instilled mice at the early and late fibrotic stages. Besides, metformin (range 2–10 mM) reversed SiO2-induced cell toxicity, oxidative stress, and epithelial-mesenchymal transition process in epithelial cells (A549 and HBE), inhibited inflammation response in macrophages (THP-1), and alleviated TGF-β1-stimulated fibroblast activation in lung fibroblasts (MRC-5) via an AMPK-dependent pathway. Conclusions In this study, we identified that metformin might be a potential drug for silicosis treatment. Supplementary Information The online version contains supplementary material available at 10.1186/s12967-021-03036-5.
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Affiliation(s)
- Demin Cheng
- Department of Occupational Medical and Environmental Health, Key Laboratory of Modern Toxicology of Ministry of Education, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Qi Xu
- Department of Occupational Medical and Environmental Health, Key Laboratory of Modern Toxicology of Ministry of Education, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Yue Wang
- Department of Occupational Medical and Environmental Health, Key Laboratory of Modern Toxicology of Ministry of Education, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Guanru Li
- Department of Occupational Medical and Environmental Health, Key Laboratory of Modern Toxicology of Ministry of Education, Center for Global Health, 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, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Dongyu Ma
- Department of Occupational Medical and Environmental Health, Key Laboratory of Modern Toxicology of Ministry of Education, Center for Global Health, 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, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Yi Liu
- Department of Occupational Medical and Environmental Health, Key Laboratory of Modern Toxicology of Ministry of Education, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Lei Han
- Institute of Occupational Disease Prevention, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, 210028, China.
| | - Chunhui Ni
- Department of Occupational Medical and Environmental Health, Key Laboratory of Modern Toxicology of Ministry of Education, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China.
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26
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Wang Z, Feng F, He H, Wu Q, Gu C, Hrovat J, Peng W, Xu Y, Han D, Yang P, Zhou X, Li J, Shan J. Citrus alkaline extracts prevent endoplasmic reticulum stress in type II alveolar epithelial cells to ameliorate pulmonary fibrosis via the ATF3/PINK1 pathway. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2021; 89:153599. [PMID: 34260993 DOI: 10.1016/j.phymed.2021.153599] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 05/07/2021] [Accepted: 05/15/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Idiopathic pulmonary fibrosis is a chronic, progressive, fibrotic disease. Although the pathogenesis remains unclear, the effect of endoplasmic reticulum (ER) stress in type II alveolar epithelial cells (AEC IIs) is increasingly thought to be a critical mechanism. PURPOSE We investigated the effects of citrus alkaline extracts (CAE) on AEC IIs and elucidated the underlying mechanism for their possible use in ameliorating pulmonary fibrosis (PF). METHODS A bleomycin-induced mouse model of PF, and an in vitro tunicamycin (TM) -induced ER stress model in A549 cells were successfully established. Accumulation of collagen in lung tissues in vivo was assessed using histological analysis and western blotting. The expression levels of the ER-stress marker BiP and other related proteins were assessed by western blotting and immunofluorescence staining. Mitochondrial membrane potential was assessed to evaluate mitochondrial homeostasis. RESULTS CAE mitigated collagen deposition to ameliorate PF in vivo. CAE suppressed the bleomycin or TM-induced increases in ER-stress biomarker, BiP, and PERK pathway proteins, resulting in a decrease in ER stress in mouse lung tissues and A549 cells, respectively. Additionally, CAE treatment suppressed the bleomycin or TM-induced increase in the ER-stress downstream proteins, activating ATF3 and increased the levels of PINK1 in AEC IIs, both in vivo and in vitro. The reduced mitochondrial homeostasis induced by TM was restored by CAE-treatment in A549 cells. Furthermore, conditioned media from TM-treated A549 cells increased collagen deposition in MRC5 cells mainly via TGF-β1. The increased collagen deposition was not seen using conditioned media from CAE-treated A549 cells. CONCLUSION These results provide novel insights into the potential mechanism of CAE in inhibiting ER stress in AEC IIs, and suggests that it has great potential to ameliorate PF via the ATF3/PINK1 pathway.
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Affiliation(s)
- Zhichao Wang
- Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China; Jiangsu Key Laboratory of Pediatric Respiratory Disease, Institute of Pediatrics, Nanjing University of Chinese Medicine, Nanjing, China
| | - Fanchao Feng
- Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China; Jiangsu Key Laboratory of Pediatric Respiratory Disease, Institute of Pediatrics, Nanjing University of Chinese Medicine, Nanjing, China; Department of Respiratory and Critical Medicine, Jiangsu Province Hospital of Chinese Medicine, Nanjing, China
| | - Hailang He
- Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China; Department of Respiratory and Critical Medicine, Jiangsu Province Hospital of Chinese Medicine, Nanjing, China
| | - Qi Wu
- Physiology Department, Xuzhou Medical University, Xuzhou, China
| | - Cheng Gu
- Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China; Jiangsu Key Laboratory of Pediatric Respiratory Disease, Institute of Pediatrics, Nanjing University of Chinese Medicine, Nanjing, China
| | - Jonathan Hrovat
- Arizona Metabolomics Laboratory, College of Health Solutions, Arizona State University, Scottsdale, AZ, USA
| | - Wenpan Peng
- Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China; Jiangsu Key Laboratory of Pediatric Respiratory Disease, Institute of Pediatrics, Nanjing University of Chinese Medicine, Nanjing, China
| | - Yong Xu
- Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China; Jiangsu Key Laboratory of Pediatric Respiratory Disease, Institute of Pediatrics, Nanjing University of Chinese Medicine, Nanjing, China
| | - Di Han
- Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China; Jiangsu Key Laboratory of Pediatric Respiratory Disease, Institute of Pediatrics, Nanjing University of Chinese Medicine, Nanjing, China
| | - Ping Yang
- Department of Health Sciences Research, Mayo Clinic, Scottsdale, AZ, USA
| | - Xianmei Zhou
- Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China; Department of Respiratory and Critical Medicine, Jiangsu Province Hospital of Chinese Medicine, Nanjing, China.
| | - Jianxin Li
- State Key Lab of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, China.
| | - Jinjun Shan
- Jiangsu Key Laboratory of Pediatric Respiratory Disease, Institute of Pediatrics, Nanjing University of Chinese Medicine, Nanjing, China.
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Miranda MZ, Lichner Z, Szászi K, Kapus A. MRTF: Basic Biology and Role in Kidney Disease. Int J Mol Sci 2021; 22:ijms22116040. [PMID: 34204945 PMCID: PMC8199744 DOI: 10.3390/ijms22116040] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 05/21/2021] [Accepted: 05/30/2021] [Indexed: 12/23/2022] Open
Abstract
A lesser known but crucially important downstream effect of Rho family GTPases is the regulation of gene expression. This major role is mediated via the cytoskeleton, the organization of which dictates the nucleocytoplasmic shuttling of a set of transcription factors. Central among these is myocardin-related transcription factor (MRTF), which upon actin polymerization translocates to the nucleus and binds to its cognate partner, serum response factor (SRF). The MRTF/SRF complex then drives a large cohort of genes involved in cytoskeleton remodeling, contractility, extracellular matrix organization and many other processes. Accordingly, MRTF, activated by a variety of mechanical and chemical stimuli, affects a plethora of functions with physiological and pathological relevance. These include cell motility, development, metabolism and thus metastasis formation, inflammatory responses and—predominantly-organ fibrosis. The aim of this review is twofold: to provide an up-to-date summary about the basic biology and regulation of this versatile transcriptional coactivator; and to highlight its principal involvement in the pathobiology of kidney disease. Acting through both direct transcriptional and epigenetic mechanisms, MRTF plays a key (yet not fully appreciated) role in the induction of a profibrotic epithelial phenotype (PEP) as well as in fibroblast-myofibroblast transition, prime pathomechanisms in chronic kidney disease and renal fibrosis.
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Affiliation(s)
- Maria Zena Miranda
- Keenan Research Centre for Biomedical Science of the St. Michael’s Hospital, Toronto, ON M5B 1W8, Canada; (M.Z.M.); (Z.L.); (K.S.)
| | - Zsuzsanna Lichner
- Keenan Research Centre for Biomedical Science of the St. Michael’s Hospital, Toronto, ON M5B 1W8, Canada; (M.Z.M.); (Z.L.); (K.S.)
| | - Katalin Szászi
- Keenan Research Centre for Biomedical Science of the St. Michael’s Hospital, Toronto, ON M5B 1W8, Canada; (M.Z.M.); (Z.L.); (K.S.)
- Department of Surgery, University of Toronto, Toronto, ON M5T 1P5, Canada
| | - András Kapus
- Keenan Research Centre for Biomedical Science of the St. Michael’s Hospital, Toronto, ON M5B 1W8, Canada; (M.Z.M.); (Z.L.); (K.S.)
- Department of Surgery, University of Toronto, Toronto, ON M5T 1P5, Canada
- Department of Biochemistry, University of Toronto, Toronto, ON M5S 1A8, Canada
- Correspondence:
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Li C, Deng C, Zhou T, Hu J, Dai B, Yi F, Tian N, Jiang L, Dong X, Zhu Q, Zhang S, Cui H, Cao L, Shang Y. MicroRNA-370 carried by M2 macrophage-derived exosomes alleviates asthma progression through inhibiting the FGF1/MAPK/STAT1 axis. Int J Biol Sci 2021; 17:1795-1807. [PMID: 33994863 PMCID: PMC8120458 DOI: 10.7150/ijbs.59715] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 04/12/2021] [Indexed: 12/22/2022] Open
Abstract
Emerging evidence has suggested the functions of exosomes in allergic diseases including asthma. By using a mouse model with asthma induced by ovalbumin (OVA), we explored the roles of M2 macrophage-derived exosomes (M2Φ-Exos) in asthma progression. M2Φ-Exos significantly alleviated OVA-induced fibrosis and inflammatory responses in mouse lung tissues, as well as inhibited abnormal proliferation, invasion, and fibrosis-related protein production in platelet derived growth factor (PDGF-BB) treated primary mouse airway smooth muscle cells (ASMCs). The OVA administration in mice or the PDGF-BB treatment in ASMCs reduced the expression of miR-370, which was detected in M2Φ-Exos by miRNA sequencing. However, treating the mice or ASMCs with M2Φ-Exos reversed the inhibitory effect of OVA or PDGF-BB on miR-370 expression. We identified that the target of miR-370 was fibroblast growth factor 1 (FGF1). Downregulation of miR-370 by Lv-miR-370 inhibitor or overexpression of FGF1 by Lv-FGF1 blocked the protective roles of M2Φ-Exos in asthma-like mouse and cell models. M2Φ-Exos were found to inactivate the MAPK signaling pathway, which was recovered by miR-370 inhibition or FGF1 overexpression. Collectively, we conclude that M2Φ-Exos carry miR-370 to alleviate asthma progression through downregulating FGF1 expression and the MAPK/STAT1 signaling pathway. Our study may offer a novel insight into asthma treatment.
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Affiliation(s)
- Chunlu Li
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Chengsi Deng
- College of Basic Medicine Science, China Medical University, Shenyang 110122, China
| | - Tingting Zhou
- College of Basic Medicine Science, China Medical University, Shenyang 110122, China
| | - Jiapeng Hu
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Bing Dai
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Fei Yi
- College of Basic Medicine Science, China Medical University, Shenyang 110122, China
| | - Na Tian
- Jilin Tuohua Biotechnology Co., Ltd. Changchun, Jilin 13000, China
| | - Lijun Jiang
- Jilin Tuohua Biotechnology Co., Ltd. Changchun, Jilin 13000, China
| | - Xiang Dong
- College of Basic Medicine Science, China Medical University, Shenyang 110122, China
| | - Qingfeng Zhu
- College of Basic Medicine Science, China Medical University, Shenyang 110122, China
| | - Siyi Zhang
- College of Basic Medicine Science, China Medical University, Shenyang 110122, China
| | - Hongyan Cui
- College of Basic Medicine Science, China Medical University, Shenyang 110122, China
| | - Liu Cao
- College of Basic Medicine Science, China Medical University, Shenyang 110122, China
| | - Yunxiao Shang
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang 110004, China
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Zhang L, Li HL, Zhang DD, Cui XC. Therapeutic effects of myocardin-related transcription factor A (MRTF-A) knockout on experimental mice with nonalcoholic steatohepatitis induced by high-fat diet. Hum Exp Toxicol 2021; 40:1634-1645. [PMID: 33779332 DOI: 10.1177/09603271211002886] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE To explore the effects of myocardin-related transcription factor A (MRTF-A) knockout on mice with nonalcoholic steatohepatitis (NASH) induced by high-fat diet (HFD). METHODS Normal-fat diet (NFD) or HFD was fed to MRTF-A-knockout (MRTF-A-/-) and wild-type (WT) mice for 16 weeks. Liver histopathological status was observed using Hematoxylin and Eosin (HE) staining, Oil Red O staining, Sirius Red staining, and Immunohistochemical staining. The mRNA and protein levels in liver tissues were measured through quantitative reverse transcription-polymerase chain reaction (qRT-PCR) and Western blot. RESULTS Compared with WT + HFD group, mice in MRTF-A-/- + HFD group were decreased in body weight, blood glucose, plasma insulin, liver TG and NAFLD activity score (NAS), with liver function recovery. Besides, compared with HFD-fed WT mice, HFD-fed MRTF-A-/- mice were improved in hepatic fibrosis, accompanied by decreased collagen content (%) and down-regulated expressions of α-SMA, COL1A2, TGFβ1, and SMAD3. In mice fed with HFD, the expression of MCP-1, CCR2, F4/80 and CD68 declined in liver tissues of MRTF-A-/- mice as compared with WT mice. Besides, in hepatic macrophages isolated from HFD-fed mice, the observed increased expression of TNF-α, IL-1β, MCP-1, as well as decreased expression of CCR2. Compared with WT + HFD group, MRTF-A-/- + HFD group mice were decreased regarding NF-κB p65 in liver tissues. CONCLUSION MRTF-A knockout reduced macrophage infiltration, down-regulated NF-κB p65 expression, and ameliorated inflammation and fibrosis of liver tissues in mice, thereby becoming a potential therapeutic target for NASH treatment.
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Affiliation(s)
- Lei Zhang
- Department of Infectious Diseases, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, China
| | - Hua-Long Li
- Department of Infectious Diseases, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, China
| | - Ding-Ding Zhang
- Department of Infectious Diseases, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, China
| | - Xiao-Chun Cui
- Bone and Joint Surgery, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, China
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30
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Choudhari JK, Verma MK, Choubey J, Sahariah BP. Investigation of MicroRNA and transcription factor mediated regulatory network for silicosis using systems biology approach. Sci Rep 2021; 11:1265. [PMID: 33446673 PMCID: PMC7809153 DOI: 10.1038/s41598-020-77636-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Accepted: 10/19/2020] [Indexed: 02/08/2023] Open
Abstract
Silicosis is a major health issue among workers exposed to crystalline silica. Genetic susceptibility has been implicated in silicosis. The present research demonstrates key regulatory targets and propagated network of gene/miRNA/transcription factor (TF) with interactions responsible for silicosis by integrating publicly available microarray data using a systems biology approach. Array quality is assessed with the Quality Metrics package of Bioconductor, limma package, and the network is constructed using Cytoscape. We observed and enlist 235 differentially expressed genes (DEGs) having up-regulation expression (85 nos) and down-regulation expression (150 nos.) in silicosis; and 24 TFs for the regulation of these DEGs entangled with thousands of miRNAs. Functional enrichment analysis of the DEGs enlighten that, the maximum number of DEGs are responsible for biological process viz, Rab proteins signal transduction (11 nos.) and Cellular Senescence (20 nos.), whereas IL-17 signaling pathway (16 nos.) and Signalling by Nuclear Receptors (14 nos.) etc. are Biological Pathway involving more DEGs. From the identified 1100 high target microRNA (miRNA)s involved in silicosis, 1055 miRNAs are found to relate with down-regulated genes and 847 miRNAs with up-regulated genes. The CDK19 gene (Up-regulated) is associated with 617 miRNAs whereas down-regulated gene ARID5B is regulated by as high as 747 high target miRNAs. In Prediction of Small-molecule signatures, maximum scoring small-molecule combinations for the DEGs have shown that CGP-60774 (with 20 combinations), alvocidib (with 15 combinations) and with AZD-7762 (24 combinations) with few other drugs having the high probability of success.
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Affiliation(s)
- J K Choudhari
- Chhattisgarh Swami Vivekanand Technical University, Bhilai, C.G, 491107, India
- Raipur Institute of Technology, Raipur, C.G, 492001, India
| | - M K Verma
- Chhattisgarh Swami Vivekanand Technical University, Bhilai, C.G, 491107, India
- National Institute of Technology Raipur, Raipur, C.G, 491020, India
| | - J Choubey
- Raipur Institute of Technology, Raipur, C.G, 492001, India
| | - B P Sahariah
- Chhattisgarh Swami Vivekanand Technical University, Bhilai, C.G, 491107, India.
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Pang J, Qi X, Luo Y, Li X, Shu T, Li B, Song M, Liu Y, Wei D, Chen J, Wang J, Wang C. Multi-omics study of silicosis reveals the potential therapeutic targets PGD 2 and TXA 2. Am J Cancer Res 2021; 11:2381-2394. [PMID: 33500731 PMCID: PMC7797695 DOI: 10.7150/thno.47627] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 11/15/2020] [Indexed: 02/06/2023] Open
Abstract
Rationale: Silicosis is a severe occupational lung disease. Current treatments for silicosis have highly limited availability (i.e., lung transplantation) or, do not effectively prolong patient survival time (i.e., lung lavage). There is thus an urgent clinical need for effective drugs to retard the progression of silicosis. Methods: To systematically characterize the molecular changes associated with silicosis and to discover potential therapeutic targets, we conducted a transcriptomics analysis of human lung tissues acquired during transplantation, which was integrated with transcriptomics and metabolomics analyses of silicosis mouse lungs. The results from the multi-omics analyses were then verified by qPCR, western blot, and immunohistochemistry. The effect of Ramatroban on the progression of silicosis was evaluated in a silica-induced mouse model. Results: Wide metabolic alterations were found in lungs from both human patients and mice with silicosis. Targeted metabolite quantification and validation of expression of their synthases revealed that arachidonic acid (AA) pathway metabolites, prostaglandin D2 (PGD2) and thromboxane A2 (TXA2), were significantly up-regulated in silicosis lungs. We further examined the effect of Ramatroban, a clinical antagonist of both PGD2 and TXA2 receptors, on treating silicosis using a mouse model. The results showed that Ramatroban significantly alleviated silica-induced pulmonary inflammation, fibrosis, and cardiopulmonary dysfunction compared with the control group. Conclusion: Our results revealed the importance of AA metabolic reprogramming, especially PGD2 and TXA2 in the progression of silicosis. By blocking the receptors of these two prostanoids, Ramatroban may be a novel potential therapeutic drug to inhibit the progression of silicosis.
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Li C, Dai B, Hu J, Shang Y. WITHDRAWN: M2 macrophage-derived exosomes carry microRNA-370 to alleviate asthma progression through inhibiting the FGF1/MAPK/STAT1 axis. Exp Cell Res 2020:112285. [PMID: 32941809 DOI: 10.1016/j.yexcr.2020.112285] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 09/07/2020] [Accepted: 09/09/2020] [Indexed: 01/16/2023]
Abstract
This article has been withdrawn at the request of the author(s) and/or editor. The Publisher apologizes for any inconvenience this may cause. The full Elsevier Policy on Article Withdrawal can be found at https://www.elsevier.com/about/our-business/policies/article-withdrawal.
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Affiliation(s)
- Chunlu Li
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang 110004, Liaoning, P.R. China
| | - Bing Dai
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang 110004, Liaoning, P.R. China
| | - Jiapeng Hu
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang 110004, Liaoning, P.R. China
| | - Yunxiao Shang
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang 110004, Liaoning, P.R. China
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