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Sun J, Zhao N, Zhang R, Li Y, Yu T, Nong Q, Lin L, Yang X, Luan T, Chen B, Huang Y. Metabolic landscape of human alveolar type II epithelial cells undergoing epithelial-mesenchymal transition induced directly by silica exposure. J Environ Sci (China) 2025; 149:676-687. [PMID: 39181677 DOI: 10.1016/j.jes.2024.02.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Revised: 02/28/2024] [Accepted: 02/28/2024] [Indexed: 08/27/2024]
Abstract
Epithelial-mesenchymal transition (EMT) plays an irreplaceable role in the development of silicosis. However, molecular mechanisms of EMT induced by silica exposure still remain to be addressed. Herein, metabolic profiles of human alveolar type II epithelial cells (A549 cells) exposed directly to silica were characterized using non-targeted metabolomic approaches. A total of 84 differential metabolites (DMs) were identified in silica-treated A549 cells undergoing EMT, which were mainly enriched in metabolisms of amino acids (e.g., glutamate, alanine, aspartate), purine metabolism, glycolysis, etc. The number of DMs identified in the A549 cells obviously increased with the elevated exposure concentration of silica. Remarkably, glutamine catabolism was significantly promoted in the silica-treated A549 cells, and the levels of related metabolites (e.g., succinate) and enzymes (e.g., α-ketoglutarate (α-KG) dehydrogenase) were substantially up-regulated, with a preference to α-KG pathway. Supplementation of glutamine into the cell culture could substantially enhance the expression levels of both EMT-related markers and Snail (zinc finger transcription factor). Our results suggest that the EMT of human alveolar epithelial cells directly induced by silica can be essential to the development of silicosis.
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Affiliation(s)
- Jin Sun
- Southern Marine Science and Engineering Guangdong Laboratory, School of Marine Sciences, Sun Yat-Sen University, Zhuhai 519082, China
| | - Na Zhao
- Guangdong Province Hospital for Occupational Disease Prevention and Treatment, Guangzhou 510300, China
| | - Ruijia Zhang
- State Key Lab of Bioresource and Biocontrol, School of Life Science, Sun Yat-sen University, Guangzhou 510275, China
| | - Yizheng Li
- Southern Marine Science and Engineering Guangdong Laboratory, School of Marine Sciences, Sun Yat-Sen University, Zhuhai 519082, China
| | - Tiantian Yu
- Metabolic Innovation Center, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou 540080, China
| | - Qiying Nong
- Guangdong Province Hospital for Occupational Disease Prevention and Treatment, Guangzhou 510300, China
| | - Li Lin
- Guangdong Provincial Laboratory of Chemistry and Fine Chemical Engineering Jieyang Center, Jieyang 515200, China; State Key Lab of Bioresource and Biocontrol, School of Life Science, Sun Yat-sen University, Guangzhou 510275, China
| | - Xubin Yang
- Department of Endocrinology and Metabolism, Guangdong Provincial Key Laboratory of Diabetology, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou 510630, China
| | - Tiangang Luan
- Guangdong Provincial Laboratory of Chemistry and Fine Chemical Engineering Jieyang Center, Jieyang 515200, China; State Key Lab of Bioresource and Biocontrol, School of Life Science, Sun Yat-sen University, Guangzhou 510275, China
| | - Baowei Chen
- Southern Marine Science and Engineering Guangdong Laboratory, School of Marine Sciences, Sun Yat-Sen University, Zhuhai 519082, China; Guangdong Provincial Laboratory of Chemistry and Fine Chemical Engineering Jieyang Center, Jieyang 515200, China.
| | - Yongshun Huang
- Guangdong Province Hospital for Occupational Disease Prevention and Treatment, Guangzhou 510300, China.
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Huo C, Jiao X, Wang Y, Jiang Q, Ning F, Wang J, Jia Q, Zhu Z, Tian L. Silica aggravates pulmonary fibrosis through disrupting lung microbiota and amino acid metabolites. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 945:174028. [PMID: 38889818 DOI: 10.1016/j.scitotenv.2024.174028] [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: 04/16/2024] [Revised: 06/10/2024] [Accepted: 06/13/2024] [Indexed: 06/20/2024]
Abstract
Silicosis, recognized as a severe global public health issue, is an irreversible pulmonary fibrosis caused by the long-term inhalation of silica particles. Given the intricate pathogenesis of silicosis, there is no effective intervention measure, which poses a severe threat to public health. Our previous study reported that dysbiosis of lung microbiota is associated with the development of pulmonary fibrosis, potentially involving the lipopolysaccharides/toll-like receptor 4 pathway. Similarly, the process of pulmonary fibrosis is accompanied by alterations in metabolic pathways. This study employed a combined approach of 16S rDNA sequencing and metabolomic analysis to investigate further the role of lung microbiota in silicosis delving deeper into the potential pathogenesis of silicosis. Silica exposure can lead to dysbiosis of the lung microbiota and the occurrence of pulmonary fibrosis, which was alleviated by a combination antibiotic intervention. Additionally, significant metabolic disturbances were found in silicosis, involving 85 differential metabolites among the three groups, which are mainly focused on amino acid metabolic pathways. The changed lung metabolites showed a substantial correlation with lung microbiota. The relative abundance of Pseudomonas negatively correlated with L-Aspartic acid, L-Glutamic acid, and L-Threonine levels. These results indicate that dysbiosis in pulmonary microbiota exacerbates silica-induced fibrosis through impacts on amino acid metabolism, providing new insights into the potential mechanisms and interventions of silicosis.
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Affiliation(s)
- Chuanyi Huo
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Xukun Jiao
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Yan Wang
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Qiyue Jiang
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Fuao Ning
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Jiaxin Wang
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Qiyue Jia
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China.
| | - Zhonghui Zhu
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China.
| | - Lin Tian
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China.
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Hang W, Bu C, Cui Y, Chen K, Zhang D, Li H, Wang S. Research progress on the pathogenesis and prediction of pneumoconiosis among coal miners. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2024; 46:319. [PMID: 39012521 DOI: 10.1007/s10653-024-02114-z] [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: 04/13/2024] [Accepted: 07/02/2024] [Indexed: 07/17/2024]
Abstract
Pneumoconiosis is the most common occupational disease among coal miners, which is a lung disease caused by long-term inhalation of coal dust and retention in the lungs. The early stage of this disease is highly insidious, and pulmonary fibrosis may occur in the middle and late stages, leading to an increase in patient pain index and mortality rate. Currently, there is a lack of effective treatment methods. The pathogenesis of pneumoconiosis is complex and has many influencing factors. Although the characteristics of coal dust have been considered the main cause of different mechanisms of pneumoconiosis, the effects of coal dust composition, particle size and shape, and coal dust concentration on the pathogenesis of pneumoconiosis have not been systematically elucidated. Meanwhile, considering the irreversibility of pneumoconiosis progression, early prediction for pneumoconiosis patients is particularly important. However, there is no early prediction standard for pneumoconiosis among coal miners. This review summarizes the relevant research on the pathogenesis and prediction of pneumoconiosis in coal miners in recent years. Firstly, the pathogenesis of coal worker pneumoconiosis and silicosis was discussed, and the impact of coal dust characteristics on pneumoconiosis was analyzed. Then, the early diagnostic methods for pneumoconiosis have been systematically introduced, with a focus on image collaborative computer-aided diagnosis analysis and biomarker detection. Finally, the challenge of early screening technology for miners with pneumoconiosis was proposed.
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Affiliation(s)
- Wenlu Hang
- Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Xuzhou Medical University, Xuzhou, 221000, Jiangsu Province, People's Republic of China
| | - Chunlu Bu
- Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Xuzhou Medical University, Xuzhou, 221000, Jiangsu Province, People's Republic of China
| | - Yuming Cui
- School of Mechatronic Engineering, Jiangsu Normal University, Xuzhou, 221000, Jiangsu Province, People's Republic of China
| | - Kai Chen
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou, 221000, Jiangsu Province, People's Republic of China
| | - Dekun Zhang
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou, 221000, Jiangsu Province, People's Republic of China
| | - Haiquan Li
- Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Xuzhou Medical University, Xuzhou, 221000, Jiangsu Province, People's Republic of China.
- School of Chemical Engineering & Technology, China University of Mining and Technology, Xuzhou, 221000, Jiangsu Province, People's Republic of China.
| | - Songquan Wang
- School of Mechatronic Engineering, Jiangsu Normal University, Xuzhou, 221000, Jiangsu Province, People's Republic of China.
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Shi X, Chen Y, Shi M, Gao F, Huang L, Wang W, Wei D, Shi C, Yu Y, Xia X, Song N, Chen X, Distler JHW, Lu C, Chen J, Wang J. The novel molecular mechanism of pulmonary fibrosis: insight into lipid metabolism from reanalysis of single-cell RNA-seq databases. Lipids Health Dis 2024; 23:98. [PMID: 38570797 PMCID: PMC10988923 DOI: 10.1186/s12944-024-02062-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Accepted: 02/27/2024] [Indexed: 04/05/2024] Open
Abstract
Pulmonary fibrosis (PF) is a severe pulmonary disease with limited available therapeutic choices. Recent evidence increasingly points to abnormal lipid metabolism as a critical factor in PF pathogenesis. Our latest research identifies the dysregulation of low-density lipoprotein (LDL) is a new risk factor for PF, contributing to alveolar epithelial and endothelial cell damage, and fibroblast activation. In this study, we first integrative summarize the published literature about lipid metabolite changes found in PF, including phospholipids, glycolipids, steroids, fatty acids, triglycerides, and lipoproteins. We then reanalyze two single-cell RNA-sequencing (scRNA-seq) datasets of PF, and the corresponding lipid metabolomic genes responsible for these lipids' biosynthesis, catabolism, transport, and modification processes are uncovered. Intriguingly, we found that macrophage is the most active cell type in lipid metabolism, with almost all lipid metabolic genes being altered in macrophages of PF. In type 2 alveolar epithelial cells, lipid metabolic differentially expressed genes (DEGs) are primarily associated with the cytidine diphosphate diacylglycerol pathway, cholesterol metabolism, and triglyceride synthesis. Endothelial cells are partly responsible for sphingomyelin, phosphatidylcholine, and phosphatidylethanolamines reprogramming as their metabolic genes are dysregulated in PF. Fibroblasts may contribute to abnormal cholesterol, phosphatidylcholine, and phosphatidylethanolamine metabolism in PF. Therefore, the reprogrammed lipid profiles in PF may be attributed to the aberrant expression of lipid metabolic genes in different cell types. Taken together, these insights underscore the potential of targeting lipid metabolism in developing innovative therapeutic strategies, potentially leading to extended overall survival in individuals affected by PF.
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Affiliation(s)
- Xiangguang Shi
- Department of Dermatology, Huashan Hospital, and State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, China
| | - Yahui Chen
- Human Phenome Institute, and Collaborative Innovation Center for Genetics and Development, Fudan University, Shanghai, China Fudan University, Shanghai, China
| | - Mengkun Shi
- Department of Thoracic Surgery, Huashan Hospital, Fudan University, Shanghai, China
| | - Fei Gao
- Wuxi Lung Transplant Center, Wuxi People's Hospital affiliated to Nanjing Medical University, Wuxi, China
| | - Lihao Huang
- Shanghai Key Laboratory of Metabolic Remodeling and Health, Institute of Metabolism & Integrative Biology, Liver Cancer Institute, Zhongshan Hospital, Fudan University, Shanghai, 200438, China
| | - Wei Wang
- Wuxi Lung Transplant Center, Wuxi People's Hospital affiliated to Nanjing Medical University, Wuxi, China
- MOE Key Laboratory of Contemporary Anthropology, School of Life Sciences, Fudan University, Shanghai, China
| | - Dong Wei
- Wuxi Lung Transplant Center, Wuxi People's Hospital affiliated to Nanjing Medical University, Wuxi, China
| | - Chenyi Shi
- MOE Key Laboratory of Contemporary Anthropology, School of Life Sciences, Fudan University, Shanghai, China
| | - Yuexin Yu
- Human Phenome Institute, and Collaborative Innovation Center for Genetics and Development, Fudan University, Shanghai, China Fudan University, Shanghai, China
| | - Xueyi Xia
- Human Phenome Institute, and Collaborative Innovation Center for Genetics and Development, Fudan University, Shanghai, China Fudan University, Shanghai, China
| | - Nana Song
- Department of Nephrology, Zhongshan Hospital, Fudan University, Fudan Zhangjiang Institute, Shanghai, People's Republic of China
| | - Xiaofeng Chen
- Department of Thoracic Surgery, Huashan Hospital, Fudan University, Shanghai, China
| | - Jörg H W Distler
- Department of Internal Medicine 3 and Institute for Clinical Immunology, University of Erlangen, Nuremberg, Germany
| | - Chenqi Lu
- MOE Key Laboratory of Contemporary Anthropology, School of Life Sciences, Fudan University, Shanghai, China.
| | - Jingyu Chen
- Wuxi Lung Transplant Center, Wuxi People's Hospital affiliated to Nanjing Medical University, Wuxi, China.
- Center for Lung Transplantation, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.
| | - Jiucun Wang
- Department of Dermatology, Huashan Hospital, and State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, China.
- Human Phenome Institute, and Collaborative Innovation Center for Genetics and Development, Fudan University, Shanghai, China Fudan University, Shanghai, China.
- Research Unit of Dissecting the Population Genetics and Developing New Technologies for Treatment and Prevention of Skin Phenotypes and Dermatological Diseases (2019RU058), Chinese Academy of Medical Sciences, Beijing, China.
- Institute of Rheumatology, Immunology and Allergy, Fudan University, Shanghai, China.
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Ma R, Fan Y, Huang X, Wang J, Li S, Wang Y, Ye Q. Lipid dysregulation associated with progression of silica-induced pulmonary fibrosis. Toxicol Sci 2023; 191:296-307. [PMID: 36477571 DOI: 10.1093/toxsci/kfac124] [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] [Indexed: 12/12/2022] Open
Abstract
Silicosis is an irreversible, progressive, fibrotic lung disease caused by long-term exposure to dust-containing silica particles at the workplace. Despite the precautions enforced, the rising incidence of silicosis continues to occur globally, particularly in developing countries. A better understanding of the disease progression and potential metabolic reprogramming of silicosis is warranted. The low- or high-dose silica-induced pulmonary fibrosis in mice was constructed to mimic chronic or accelerated silicosis. Silica-induced mice lung fibrosis was analyzed by histology, lung function, and computed tomography scans. Non-targeted metabolomics of the lung tissues was conducted by ultra-high-performance liquid chromatography-mass spectrometry to show the temporal metabolic trajectory. The low-dose silica-induced silicosis characterized inflammation for up to 42 days, with the onset of cellular silicon nodules. Conversely, the high-dose silica-induced silicosis characterized inflammation for up to 14 days, after which the disease developed rapidly, with a large volume of collagen deposition, presenting progressive massive fibrosis. Both low- and high silica-induced fibrosis had aberrant lipid metabolism. Combined with the RNA-Seq data, this multiomics study demonstrated alterations in the enzymes involved in sphingolipid metabolism. Time-dependent metabolic reprogramming revealing abnormal glycerophospholipid metabolism was intimately associated with the process of inflammation, whereas sphingolipid metabolism was crucial during lung fibrosis. These findings suggest that lipid dysregulation, especially sphingolipid metabolism, was involved in the process of silicosis.
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Affiliation(s)
- Ruimin Ma
- Department of Occupational Medicine and Toxicology, Clinical Center for Interstitial Lung Diseases, Beijing Institute of Respiratory Medicine, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, 100020, China
| | - Yali Fan
- Department of Occupational Medicine and Toxicology, Clinical Center for Interstitial Lung Diseases, Beijing Institute of Respiratory Medicine, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, 100020, China
| | - Xiaoxi Huang
- Medical Research Center, Beijing Institute of Respiratory Medicine, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, 100020, China
| | - Jingwei Wang
- Department of Occupational Medicine and Toxicology, Clinical Center for Interstitial Lung Diseases, Beijing Institute of Respiratory Medicine, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, 100020, China
| | - Shuang Li
- Department of Occupational Medicine and Toxicology, Clinical Center for Interstitial Lung Diseases, Beijing Institute of Respiratory Medicine, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, 100020, China
| | - Yuanying Wang
- Department of Occupational Medicine and Toxicology, Clinical Center for Interstitial Lung Diseases, Beijing Institute of Respiratory Medicine, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, 100020, China
| | - Qiao Ye
- Department of Occupational Medicine and Toxicology, Clinical Center for Interstitial Lung Diseases, Beijing Institute of Respiratory Medicine, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, 100020, China
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Peng F, Dai J, Qian Q, Cao X, Wang L, Zhu M, Han S, Liu W, Li Y, Xue T, Chen X, Yang X, Wang J, Wang H, Li T, Ding C. Serum metabolic profiling of coal worker's pneumoconiosis using untargeted lipidomics. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:85444-85453. [PMID: 35796929 DOI: 10.1007/s11356-022-21905-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 07/04/2022] [Indexed: 06/15/2023]
Abstract
In this work, untargeted lipidomics was employed to analyze the effects of coal dust exposure on serum metabolite profiles. Furthermore, the potential of differential metabolites as novel biomarkers for diagnosis was investigated by binary logistic classification model. Nineteen differential metabolites were found among the three groups. The compounds were enriched in pathways associated with linoleic acid metabolism and pyrimidine metabolism. Fifty-three differential metabolites were found in coal dust-exposed people and CWP patients, and they were mainly enriched in glycerophospholipid metabolism. Three differential metabolites were correlated with lung function values. The diagnostic model, composed of lysoPI (16:0/0:0), bilirubin, and lysoPC (24:1/0:0), showed strong discrimination ability between dust-exposed people and CWP patients. The sensitivity, specificity, and AUC values of the model were 0.869, 0.600, and 0.750, respectively. The results suggest that coal worker's pneumoconiosis causes abnormal lipid metabolism in the body. A diagnostic model may aid current CWP diagnostic methods, and lysoPI (16:0/0:0), bilirubin, and lysoPC (24:1/0:0) can be used as potential CWP biomarkers. Further study is warranted to validate the findings in larger populations.
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Affiliation(s)
- Fangda Peng
- National Center for Occupational Safety and Health, NHC, Beijing, 102308, China
- NHC Key Laboratary for Engineering Control of Dust Hazard, Beijing, 102308, China
| | - Jing Dai
- National Center for Occupational Safety and Health, NHC, Beijing, 102308, China
- NHC Key Laboratary for Engineering Control of Dust Hazard, Beijing, 102308, China
| | - Qingjun Qian
- National Center for Occupational Safety and Health, NHC, Beijing, 102308, China
- NHC Key Laboratary for Engineering Control of Dust Hazard, Beijing, 102308, China
| | - Xiangfu Cao
- National Center for Occupational Safety and Health, NHC, Beijing, 102308, China
- NHC Key Laboratary for Engineering Control of Dust Hazard, Beijing, 102308, China
| | - Lifang Wang
- National Center for Occupational Safety and Health, NHC, Beijing, 102308, China
- NHC Key Laboratary for Engineering Control of Dust Hazard, Beijing, 102308, China
| | - Min Zhu
- National Center for Occupational Safety and Health, NHC, Beijing, 102308, China
- NHC Key Laboratary for Engineering Control of Dust Hazard, Beijing, 102308, China
| | - Shujin Han
- National Center for Occupational Safety and Health, NHC, Beijing, 102308, China
- NHC Key Laboratary for Engineering Control of Dust Hazard, Beijing, 102308, China
| | - Wubin Liu
- National Center for Occupational Safety and Health, NHC, Beijing, 102308, China
- NHC Key Laboratary for Engineering Control of Dust Hazard, Beijing, 102308, China
| | - Yan Li
- National Center for Occupational Safety and Health, NHC, Beijing, 102308, China
- NHC Key Laboratary for Engineering Control of Dust Hazard, Beijing, 102308, China
| | - Teng Xue
- ZhongYuan BoRui Biotech (Zhuhai Hengqin) Co., Ltd, Zhuhai, 519031, China
| | - Xianyang Chen
- ZhongYuan BoRui Biotech (Zhuhai Hengqin) Co., Ltd, Zhuhai, 519031, China
| | - Xiaoli Yang
- General Hospital of Jingmei Group, Beijing, 102308, China
| | - Jiaolei Wang
- General Hospital of Jingmei Group, Beijing, 102308, China
| | - Huanqiang Wang
- National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, 100050, China
| | - Tao Li
- National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, 100050, China
| | - Chunguang Ding
- National Center for Occupational Safety and Health, NHC, Beijing, 102308, China.
- NHC Key Laboratary for Engineering Control of Dust Hazard, Beijing, 102308, China.
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Deng X, Hao C, Li Y, Guo Y, Si H, He J, Deng M, Niu Z, Wang C, Xu X, Dai K, Yao W. Lysophosphatidylcholine acyltransferase 1 alleviates silica-induced pulmonary fibrosis by modulating lipid metabolism. Biomed Pharmacother 2022; 155:113638. [PMID: 36099794 DOI: 10.1016/j.biopha.2022.113638] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 08/26/2022] [Accepted: 08/30/2022] [Indexed: 11/25/2022] Open
Abstract
Silicosis is an incurable lung disease that can progress even when exposure to silica dust has ended. Lipid metabolism plays an important role in the occurrence and development of silicosis. However, the mechanistic details have not been fully elucidated. This was investigated in the current study by high-performance liquid chromatography-mass spectrometry-based lipidomic analysis of lung tissue in a mouse model of silicosis. Lipid profiles and key metabolic enzymes were compared between silica and control groups. The lipidomic analysis revealed differentially-expressed lipids in the lungs of silicosis mice compared with controls. Among the identified lipid metabolism-related enzymes, the expression of lysophosphatidylcholine acyltransferase 1 (LPCAT1) was significantly down-regulated at the transcript and protein levels. LPCAT1 overexpression in vivo using adeno-associated virus altered the balance between phosphatidylcholine and lysophosphatidylcholine and inhibited the development of silicosis in mice. These results indicate that LPCAT1 dysregulation leads to abnormal lipid metabolism and silicosis, and is a potential therapeutic target for the treatment of silica-induced pulmonary fibrosis.
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Affiliation(s)
- Xuedan Deng
- Department of Occupational Health and Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Changfu Hao
- Department of Child and Adolescence Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Yiping Li
- Department of Occupational Health and Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Yonghua Guo
- Department of Occupational Health and Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Huifang Si
- Department of Occupational Health and Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Jing He
- Department of Occupational Health and Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Meng Deng
- Department of Occupational Health and Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Zhuoya Niu
- Department of Occupational Health and Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Chen Wang
- Department of Occupational Health and Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Xiao Xu
- Department of Occupational Health and Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Kai Dai
- Department of Occupational Health and Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Wu Yao
- Department of Occupational Health and Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan 450001, China.
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Chen S, Liu M, Xie F. Global and national burden and trends of mortality and disability-adjusted life years for silicosis, from 1990 to 2019: results from the Global Burden of Disease study 2019. BMC Pulm Med 2022; 22:240. [PMID: 35729551 PMCID: PMC9210623 DOI: 10.1186/s12890-022-02040-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Accepted: 06/06/2022] [Indexed: 11/10/2022] Open
Abstract
Background Silicosis, as an important type of pneumoconiosis, leads to progressive and irreversible conditions from the beginning of inflammation and fibrosis. However, the data on the global burden of silicosis and long-term trends were limited. Methods Derived from the Global Burden of Disease study 2019 (online publicly available: Global Health Data Exchange), data on both crude and age-standardized rates (ASR) per 100,00 people of mortality and disability-adjusted life years (DALYs) due to silicosis was collected and analyzed. The burden and trends of mortality and DALYs due to silicosis was assessed by 204 countries and territories, by 5-year interval of age group and by sex from 1990 to 2019. And all the regions were divided into 5 categories according to Sociodemographic Index (SDI). Temporal trends in mortality and DALY were evaluated only to ASR by the Joinpoint regression model. Results More than 12.9 thousand [95% Uncertainty Intervals (UI): 10.9, 16.2] death cases occurred due to silicosis worldwide, and 655.7 thousand (95% UI: 519.3, 828.0) DALYs were attributed to silicosis in 2019. From 1990 to 2019, global number of mortality and DALYs in countries with high SDI quintile decreased by 0.35% (95% UI: − 0.45, − 0.17) and 0.32% (95% UI: − 0.45, − 0.01), respectively. There was a greater burden in low- and middle-income countries were estimated in 2019 according to ASRs. The global number of mortality and DALYs among males accounted for over 95% of all in 2019. Both age-sex-specific mortality and DALY rate were increasing with aging and reached their peak at 85–89 age group. During the past 30 years, ASR of mortality and DALYs showed a decreasing trend with average annual percentage change at -3.0% [95% Confidence Intervals (CI): − 3.2, − 2.9] and − 2.0 (95% CI: − 1.7, − 2.2), respectively. Conclusions Silicosis remains an important health issue and causes a potentially serious burden worldwide. Attention should be paid to making preventable, affordable and effective measures in lower SDI regions. Supplementary Information The online version contains supplementary material available at 10.1186/s12890-022-02040-9.
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Affiliation(s)
- Shimin Chen
- Institute of Geriatrics, Second Medical Center, Beijing Key Laboratory of Aging and Geriatrics, National Clinical Research Center for Geriatric Disease, Chinese PLA General Hospital, Chinese PLA Medical School, Beijing, China
| | - Miao Liu
- Graduate School, Chinese PLA General Hospital, Chinese PLA Medical School, Beijing, China.
| | - Fei Xie
- College of Pulmonary and Critical Care Medicine, Chinese PLA General Hospital, Beijing, China.
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