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Xie Y, Ma J, Yang M, Fan L, Chen W. Extracellular signal-regulated kinase signaling pathway and silicosis. Toxicol Res (Camb) 2021; 10:487-494. [PMID: 34141162 DOI: 10.1093/toxres/tfaa109] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 11/16/2020] [Accepted: 12/11/2020] [Indexed: 12/15/2022] Open
Abstract
Silicosis is a scarring lung disease caused by inhaling fine particles of crystalline silica in the workplace of many industries. Due to the lack of effective treatment and management, the continued high incidence of silicosis remains a major public health concern worldwide, especially in the developing countries. Till now, related molecular mechanisms underlying silicosis are still not completely understood. Multiple pathways have been reported to be participated in the pathological process of silicosis, and more complex signaling pathways are receiving attention. The activated extracellular signal-regulated kinase (ERK) signaling pathway has been recognized to control some functions in the cell. Recent studies have identified that the ERK signaling pathway contributes to the formation and development of silicosis through regulating the processes of oxidative stress, inflammatory response, proliferation and activation of fibroblasts, epithelial-mesenchymal transformation, autophagy, and apoptosis of cells. In this review article, we summarize the latest findings on the role of ERK signaling pathway in silica-induced experimental models of silicosis, as well as clinical perspectives.
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Affiliation(s)
- Yujia Xie
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.,Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Jixuan Ma
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.,Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Meng Yang
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.,Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Lieyang Fan
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.,Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Weihong Chen
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.,Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
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Foster MH, Ord JR, Zhao EJ, Birukova A, Fee L, Korte FM, Asfaw YG, Roggli VL, Ghio AJ, Tighe RM, Clark AG. Silica Exposure Differentially Modulates Autoimmunity in Lupus Strains and Autoantibody Transgenic Mice. Front Immunol 2019; 10:2336. [PMID: 31632407 PMCID: PMC6781616 DOI: 10.3389/fimmu.2019.02336] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2019] [Accepted: 09/16/2019] [Indexed: 11/13/2022] Open
Abstract
Inhalational exposure to crystalline silica is linked to several debilitating systemic autoimmune diseases characterized by a prominent humoral immune component, but the mechanisms by which silica induces autoantibodies is poorly understood. To better understand how silica lung exposure breaks B cell tolerance and unleashes autoreactive B cells, we exposed both wildtype mice of healthy C57BL/6 and lupus-prone BXSB, MRL, and NZB strains and mice carrying an autoantibody transgene on each of these backgrounds to instilled silica or vehicle and monitored lung injury, autoimmunity, and B cell fate. Silica exposure induced lung damage and pulmonary lymphoid aggregates in all strains, including in genetically diverse backgrounds and in autoantibody transgenic models. In wildtype mice strain differences were observed in specificity of autoantibodies and site of enhanced autoantibody production, consistent with genetic modulation of the autoimmune response to silica. The unique autoantibody transgene reporter system permitted the in vivo fate of autoreactive B cells and tolerance mechanisms to be tracked directly, and demonstrated the presence of transgenic B cells and antibody in pulmonary lymphoid aggregates and bronchoalveolar lavage fluid, respectively, as well as in spleen and serum. Nonetheless, B cell enumeration and transgenic antibody quantitation indicated that B cell deletion and anergy were intact in the different genetic backgrounds. Thus, silica exposure sufficient to induce substantial lung immunopathology did not overtly disrupt central B cell tolerance, even when superimposed on autoimmune genetic susceptibility. This suggests that silica exposure subverts tolerance at alternative checkpoints, such as regulatory cells or follicle entry, or requires additional interactions or co-exposures to induce loss of tolerance. This possibility is supported by results of differentiation assays that demonstrated transgenic autoantibodies in supernatants of Toll-like receptor (TLR)7/TLR9-stimulated splenocytes harvested from silica-exposed, but not vehicle-exposed, C57BL/6 mice. This suggests that lung injury induced by silica exposure has systemic effects that subtly alter autoreactive B cell regulation, possibly modulating B cell anergy, and that can be unmasked by superimposed exposure to TLR ligands or other immunostimulants.
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Affiliation(s)
- Mary H Foster
- Department of Medicine, Duke University Health System, Durham, NC, United States.,Durham VA Medical Center, Durham, NC, United States
| | - Jeffrey R Ord
- Department of Medicine, Duke University Health System, Durham, NC, United States
| | - Emma J Zhao
- Department of Medicine, Duke University Health System, Durham, NC, United States
| | - Anastasiya Birukova
- Department of Medicine, Duke University Health System, Durham, NC, United States
| | - Lanette Fee
- Department of Medicine, Duke University Health System, Durham, NC, United States.,Durham VA Medical Center, Durham, NC, United States
| | - Francesca M Korte
- Department of Medicine, Duke University Health System, Durham, NC, United States
| | - Yohannes G Asfaw
- Division of Laboratory Animal Resources, Duke University Medical Center, Durham, NC, United States
| | - Victor L Roggli
- Department of Pathology, Duke University Health System, Durham, NC, United States
| | - Andrew J Ghio
- National Health and Environmental Effects Research Laboratory, US Environmental Protection Agency, Chapel Hill, NC, United States
| | - Robert M Tighe
- Department of Medicine, Duke University Health System, Durham, NC, United States.,Durham VA Medical Center, Durham, NC, United States
| | - Amy G Clark
- Department of Medicine, Duke University Health System, Durham, NC, United States.,Durham VA Medical Center, Durham, NC, United States
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Hegde B, Bodduluri SR, Satpathy SR, Alghsham RS, Jala VR, Uriarte SM, Chung DH, Lawrenz MB, Haribabu B. Inflammasome-Independent Leukotriene B 4 Production Drives Crystalline Silica-Induced Sterile Inflammation. THE JOURNAL OF IMMUNOLOGY 2018; 200:3556-3567. [PMID: 29610142 DOI: 10.4049/jimmunol.1701504] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Accepted: 03/09/2018] [Indexed: 12/14/2022]
Abstract
Silicosis is a lung inflammatory disease caused by chronic exposure to crystalline silica (CS). Leukotriene B4 (LTB4) plays an important role in neutrophilic inflammation, which drives silicosis and promotes lung cancer. In this study, we examined the mechanisms involved in CS-induced inflammatory pathways. Phagocytosis of CS particles is essential for the production of LTB4 and IL-1β in mouse macrophages, mast cells, and neutrophils. Phagosomes enclosing CS particles trigger the assembly of lipidosome in the cytoplasm, which is likely the primary source of CS-induced LTB4 production. Activation of the JNK pathway is essential for both CS-induced LTB4 and IL-1β production. Studies with bafilomycin-A1- and NLRP3-deficient mice revealed that LTB4 synthesis in the lipidosome is independent of inflammasome activation. Small interfering RNA knockdown and confocal microscopy studies showed that GTPases Rab5c, Rab40c along with JNK1 are essential for lipidosome formation and LTB4 production. BI-78D3, a JNK inhibitor, abrogated CS-induced neutrophilic inflammation in vivo in an air pouch model. These results highlight an inflammasome-independent and JNK activation-dependent lipidosome pathway as a regulator of LTB4 synthesis and CS-induced sterile inflammation.
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Affiliation(s)
- Bindu Hegde
- Department of Microbiology and Immunology, University of Louisville Health Sciences Center, Louisville, KY 40202.,James Graham Brown Cancer Center, University of Louisville Health Sciences Center, Louisville, KY 40202; and
| | - Sobha R Bodduluri
- Department of Microbiology and Immunology, University of Louisville Health Sciences Center, Louisville, KY 40202.,James Graham Brown Cancer Center, University of Louisville Health Sciences Center, Louisville, KY 40202; and
| | - Shuchismita R Satpathy
- Department of Microbiology and Immunology, University of Louisville Health Sciences Center, Louisville, KY 40202.,James Graham Brown Cancer Center, University of Louisville Health Sciences Center, Louisville, KY 40202; and
| | - Ruqaih S Alghsham
- Department of Microbiology and Immunology, University of Louisville Health Sciences Center, Louisville, KY 40202.,James Graham Brown Cancer Center, University of Louisville Health Sciences Center, Louisville, KY 40202; and
| | - Venkatakrishna R Jala
- Department of Microbiology and Immunology, University of Louisville Health Sciences Center, Louisville, KY 40202.,James Graham Brown Cancer Center, University of Louisville Health Sciences Center, Louisville, KY 40202; and
| | - Silvia M Uriarte
- Department of Medicine, University of Louisville Health Sciences Center, Louisville, KY 40202
| | - Dong-Hoon Chung
- Department of Microbiology and Immunology, University of Louisville Health Sciences Center, Louisville, KY 40202
| | - Matthew B Lawrenz
- Department of Microbiology and Immunology, University of Louisville Health Sciences Center, Louisville, KY 40202
| | - Bodduluri Haribabu
- Department of Microbiology and Immunology, University of Louisville Health Sciences Center, Louisville, KY 40202; .,James Graham Brown Cancer Center, University of Louisville Health Sciences Center, Louisville, KY 40202; and
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Fei Y, Sun L, Yuan C, Jiang M, Lou Q, Xu Y. CFTR ameliorates high glucose-induced oxidative stress and inflammation by mediating the NF-κB and MAPK signaling pathways in endothelial cells. Int J Mol Med 2018; 41:3501-3508. [PMID: 29512777 DOI: 10.3892/ijmm.2018.3547] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Accepted: 01/24/2018] [Indexed: 01/12/2023] Open
Abstract
Diabetic cardiovascular diseases are characterized by progressive hyperglycemia, which results in excessive production of oxidative stress and pro-inflammatory cytokines. Cystic fibrosis (CF) is characterized by chronic inflammation due to mutations in CF transmembrane conductance regulator (CFTR). However, little information is available about the role of CFTR in hyperglycemia‑induced endothelial cell oxidative stress and inflammation. In the present study, a high glucose‑treatment was applied in human umbilical vein endothelial cells with CFTR overexpression or inhibition, and the oxidative and inflammatory characteristics were measured. It was shown that CFTR protein and mRNA expression were reduced by glucose in a concentration‑dependent manner. Overexpression of CFRT via adenoviral infection significantly inhibited the production of reactive oxygen species and inflammatory biomediators induced by high glucose. Conversely, pharmacological inhibition of CFTR led to the opposite effects. Mechanistically, nuclear factor‑κB (NF‑κB) and mitogen‑activated protein kinase (MAPK) signaling were activated following high glucose treatment, which were inhibited by CFTR overexpression and enhanced by CFTR inhibition. The pro‑inflammatory effect of CFTR inhibition was abolished by pharmacological inhibition of the NF‑κB or MAPK pathways. Moreover, inhibition of MAPK abrogated CFTR inhibition‑induced NF‑κB nuclear translocation, whereas NF‑κB inhibitor produced no effects on MAPK activation. Additionally, antioxidant treatment inhibited the high glucose‑induced decrease in CFTR expression and the increase in inflammatory responses. Collectively, these findings revealed that CFTR attenuates high glucose‑induced endothelial cell oxidative stress and inflammation through inactivation of NF‑κB and MAPK signaling, indicating that elevation of CFRT expression may be a novel strategy in preventing endothelial dysfunction in diabetes.
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Affiliation(s)
- Yang Fei
- Department of Endocrinology, Fuyang First People's Hospital, Hangzhou, Zhejiang 311400, P.R. China
| | - Liqin Sun
- Department of Endocrinology, Fuyang First People's Hospital, Hangzhou, Zhejiang 311400, P.R. China
| | - Chungang Yuan
- Department of Endocrinology, Fuyang First People's Hospital, Hangzhou, Zhejiang 311400, P.R. China
| | - Min Jiang
- Department of Endocrinology, Fuyang First People's Hospital, Hangzhou, Zhejiang 311400, P.R. China
| | - Qinhua Lou
- Department of Endocrinology, Fuyang First People's Hospital, Hangzhou, Zhejiang 311400, P.R. China
| | - Yan Xu
- Department of Endocrinology, Fuyang First People's Hospital, Hangzhou, Zhejiang 311400, P.R. China
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Farris BY, Antonini JM, Fedan JS, Mercer RR, Roach KA, Chen BT, Schwegler-Berry D, Kashon ML, Barger MW, Roberts JR. Pulmonary toxicity following acute coexposures to diesel particulate matter and α-quartz crystalline silica in the Sprague-Dawley rat. Inhal Toxicol 2017; 29:322-339. [PMID: 28967277 PMCID: PMC6545482 DOI: 10.1080/08958378.2017.1361487] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The effects of acute pulmonary coexposures to silica and diesel particulate matter (DPM), which may occur in various mining operations, were investigated in vivo. Rats were exposed by intratracheal instillation (IT) to silica (50 or 233 µg), DPM (7.89 or 50 µg) or silica and DPM combined in phosphate-buffered saline (PBS) or to PBS alone (control). At one day, one week, one month, two months and three months postexposure bronchoalveolar lavage and histopathology were performed to assess lung injury, inflammation and immune response. While higher doses of silica caused inflammation and injury at all time points, DPM exposure alone did not. DPM (50 µg) combined with silica (233 µg) increased inflammation at one week and one-month postexposure and caused an increase in the incidence of fibrosis at one month compared with exposure to silica alone. To assess susceptibility to lung infection following coexposure, rats were exposed by IT to 233 µg silica, 50 µg DPM, a combination of the two or PBS control one week before intratracheal inoculation with 5 × 105 Listeria monocytogenes. At 1, 3, 5, 7 and 14 days following infection, pulmonary immune response and bacterial clearance from the lung were evaluated. Coexposure to DPM and silica did not alter bacterial clearance from the lung compared to control. Although DPM and silica coexposure did not alter pulmonary susceptibility to infection in this model, the study showed that noninflammatory doses of DPM had the capacity to increase silica-induced lung injury, inflammation and onset/incidence of fibrosis.
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Affiliation(s)
- Breanne Y. Farris
- National Institute for Occupational Safety and Health, Morgantown, WV, USA
- School of Medicine, West Virginia University, Morgantown, WV, USA
| | - James M. Antonini
- National Institute for Occupational Safety and Health, Morgantown, WV, USA
- School of Pharmacy, West Virginia University, Morgantown, WV, USA
| | - Jeffrey S. Fedan
- National Institute for Occupational Safety and Health, Morgantown, WV, USA
- School of Medicine, West Virginia University, Morgantown, WV, USA
- School of Pharmacy, West Virginia University, Morgantown, WV, USA
| | - Robert R. Mercer
- National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | - Katherine A. Roach
- National Institute for Occupational Safety and Health, Morgantown, WV, USA
- School of Pharmacy, West Virginia University, Morgantown, WV, USA
| | - Bean T. Chen
- National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | | | - Michael L. Kashon
- National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | - Mark W. Barger
- National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | - Jenny R. Roberts
- National Institute for Occupational Safety and Health, Morgantown, WV, USA
- School of Medicine, West Virginia University, Morgantown, WV, USA
- School of Pharmacy, West Virginia University, Morgantown, WV, USA
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6
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Zhang X, Jia X, Mei L, Zheng M, Yu C, Ye M. Global DNA methylation and PTEN hypermethylation alterations in lung tissues from human silicosis. J Thorac Dis 2016; 8:2185-95. [PMID: 27621875 DOI: 10.21037/jtd.2016.07.21] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
BACKGROUND Silicosis is a respiratory disease caused by long-term silica dust exposure. Our previous study has demonstrated that silica mediates the activation of phosphatidylinositol 3-kinase (PI3K)/phosphatase and tensin homolog deleted on chromosome 10 (PTEN)/serine or threonine kinase (AKT)/mitogen-activated protein kinases (MAPK)/AP-1 pathway in human embryo lung fibroblasts (HELFs). The purpose of this study is to identify genome-wide aberrant DNA methylation profiling in lung tissues from silicosis patients. METHODS We performed Illumina Human Methylation 450K Beadchip arrays to investigate the methylation alteration in formalin-fixed, paraffin-embedded (FFPE) lung specimens, immunohistochemistry to detect the level of c-Jun and PTEN proteins; methylation specific PCR (MS-PCR) to identify PTEN and c-Jun promoter methylation in HELFs. RESULTS We found 86,770 CpG sites and 79,660 CpG sites significantly differed in methylation status in early-stage and advanced-stage compared with GEO normal lung methylation data. Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis revealed the methylated status of MAPK signaling pathway was considered changed. The number of PTEN and c-Jun CpG promoter methylated-sites were increased in advanced-stage. Early-stage showed the positive expression of c-Jun and PTEN protein and negative or mild expression in advanced-stage. PTEN promoter was no differentially methylated and c-Jun promoter differed at 12 and 24 h in HELFs. CONCLUSIONS Abnormal DNA methylation on genome-scale was implicated in silicosis, and PTEN promoter hypermethylation might be associated with decrease of PTEN protein.
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Affiliation(s)
- Xianan Zhang
- Yanjing Medical College, Capital Medical University, Beijing 100069, China
| | - Xiaowei Jia
- Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Liangying Mei
- Hubei Provincial Center for Disease Control and Prevention, Wuhan 430079, China
| | - Min Zheng
- Toxicology Department, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Chen Yu
- Toxicology Department, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Meng Ye
- Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
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Dong ZW, Chen J, Ruan YC, Zhou T, Chen Y, Chen Y, Tsang LL, Chan HC, Peng YZ. CFTR-regulated MAPK/NF-κB signaling in pulmonary inflammation in thermal inhalation injury. Sci Rep 2015; 5:15946. [PMID: 26515683 PMCID: PMC4626762 DOI: 10.1038/srep15946] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Accepted: 09/30/2015] [Indexed: 12/17/2022] Open
Abstract
The mechanism underlying pulmonary inflammation in thermal inhalation injury remains elusive. Cystic fibrosis, also hallmarked with pulmonary inflammation, is caused by mutations in CFTR, the expression of which is temperature-sensitive. We investigated whether CFTR is involved in heat-induced pulmonary inflammation. We applied heat-treatment in 16HBE14o- cells with CFTR knockdown or overexpression and heat-inhalation in rats in vivo. Heat-treatment caused significant reduction in CFTR and, reciprocally, increase in COX-2 at early stages both in vitro and in vivo. Activation of ERK/JNK, NF-κB and COX-2/PGE2 were detected in heat-treated cells, which were mimicked by knockdown, and reversed by overexpression of CFTR or VX-809, a reported CFTR mutation corrector. JNK/ERK inhibition reversed heat-/CFTR-knockdown-induced NF-κB activation, whereas NF-κB inhibitor showed no effect on JNK/ERK. IL-8 was augmented by heat-treatment or CFTR-knockdown, which was abolished by inhibition of NF-κB, JNK/ERK or COX-2. Moreover, in vitro or in vivo treatment with curcumin, a natural phenolic compound, significantly enhanced CFTR expression and reversed the heat-induced increases in COX-2/PGE2/IL-8, neutrophil infiltration and tissue damage in the airway. These results have revealed a CFTR-regulated MAPK/NF-κB pathway leading to COX-2/PGE2/IL-8 activation in thermal inhalation injury, and demonstrated therapeutic potential of curcumin for alleviating heat-induced pulmonary inflammation.
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Affiliation(s)
- Zhi Wei Dong
- State Key Laboratory of Trauma, Burns and Combined Injury, Chongqing Key Laboratory for Proteomics Disease, Institute of Burn Research, Southwest Hospital, the Third Military Medical University, Chongqing, China
| | - Jing Chen
- State Key Laboratory of Trauma, Burns and Combined Injury, Chongqing Key Laboratory for Proteomics Disease, Institute of Burn Research, Southwest Hospital, the Third Military Medical University, Chongqing, China
| | - Ye Chun Ruan
- Epithelial Cell Biology Research Center, School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, People's Republic of China
| | - Tao Zhou
- State Key Laboratory of Trauma, Burns and Combined Injury, Chongqing Key Laboratory for Proteomics Disease, Institute of Burn Research, Southwest Hospital, the Third Military Medical University, Chongqing, China
| | - Yu Chen
- State Key Laboratory of Trauma, Burns and Combined Injury, Chongqing Key Laboratory for Proteomics Disease, Institute of Burn Research, Southwest Hospital, the Third Military Medical University, Chongqing, China
| | - YaJie Chen
- State Key Laboratory of Trauma, Burns and Combined Injury, Chongqing Key Laboratory for Proteomics Disease, Institute of Burn Research, Southwest Hospital, the Third Military Medical University, Chongqing, China
| | - Lai Ling Tsang
- Epithelial Cell Biology Research Center, School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, People's Republic of China
| | - Hsiao Chang Chan
- Epithelial Cell Biology Research Center, School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, People's Republic of China
| | - Yi Zhi Peng
- State Key Laboratory of Trauma, Burns and Combined Injury, Chongqing Key Laboratory for Proteomics Disease, Institute of Burn Research, Southwest Hospital, the Third Military Medical University, Chongqing, China
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8
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Wang Y, Yang G, Zhu Z, Liang D, Niu P, Gao A, Chen L, Tian L. Effect of bone morphogenic protein-7 on the expression of epithelial-mesenchymal transition markers in silicosis model. Exp Mol Pathol 2015; 98:393-402. [PMID: 25773679 DOI: 10.1016/j.yexmp.2015.03.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2014] [Revised: 03/09/2015] [Accepted: 03/11/2015] [Indexed: 12/19/2022]
Abstract
This study presented the effect of bone morphogenic protein-7 (BMP-7) inhibiting epithelial-mesenchymal transition (EMT) in silicosis model. In vivo, Wistar rats were exposed to silica by intratracheal instillation. Seven days later rats were treated with BMP-7. Rats were sacrificed at 15 and 30days after exposure of silica. The results demonstrated vimentin expression was down-regulated; and E-cadherin was up-regulated after intervention with BMP-7. The TGF-β expression and phosphorylation-p38 were lower in BMP-7 treated group than in silica group. In vitro, p38 MAPK/Snail signaling pathway was involved in the occurrence of EMT in A549 cells treated by silica. EMT was inhibited by BMP-7. The data showed BMP-7 inhibited EMT induced by silica associated with inhibition of p38 MAPK/Snail pathway.
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Affiliation(s)
- Yan Wang
- Department of Occupational Health, Environmental Health School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Gengxia Yang
- Department of Occupational Health, Environmental Health School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Zhonghui Zhu
- Department of Occupational Health, Environmental Health School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Di Liang
- Department of Occupational Health, Environmental Health School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Piye Niu
- Department of Occupational Health, Environmental Health School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Ai Gao
- Department of Occupational Health, Environmental Health School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Li Chen
- Department of Occupational Health, Environmental Health School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Lin Tian
- Department of Occupational Health, Environmental Health School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China.
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