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Xia J, Wu C, Jin X, Ding M, Zhang C, Hou G, Hao C, Yao W. Bioinformatics-based dynamics of cuproptosis -related indicators in experimental silicosis. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 275:116286. [PMID: 38564864 DOI: 10.1016/j.ecoenv.2024.116286] [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: 12/08/2023] [Revised: 03/21/2024] [Accepted: 03/31/2024] [Indexed: 04/04/2024]
Abstract
Pneumoconiosis is one of the most serious occupational diseases worldwide. Silicosis due to prolonged inhalation of free silica dust during occupational activities is one of the main types. Cuproptosis is a newly discovered mode of programmed cell death characterized by the accumulation of free copper in the cell, which ultimately leads to cell death. Increased copper in the serum of silicosis patients, suggests that the development of silicosis is accompanied by changes in copper metabolism, but whether cuproptosis is involved in the progression of silicosis is actually to be determined. To test this hypothesis, we screened the genetic changes in patients with idiopathic fibrosis by bioinformatics methods and predicted and functionally annotated the cuproptosis-related genes among them. Subsequently, we established a mouse silicosis model and detected the concentration of copper ions and the activity of ceruloplasmin (CP) in serum, as well as changes of the concentration of copper and cuproptosis related genes in mouse lung tissues. We identified 9 cuproptosis-related genes among the differential genes in patients with IPF at different times and the tissue-specific expression levels of ferredoxin 1 (FDX1) and Lipoyl synthase (LIAS) proteins. Furthermore, serum CP activity and copper ion levels in silicosis mice were elevated on days 7th and 56th after silica exposure. The expression of CP in mouse lung tissue elevated at all stages after silica exposure. The mRNA level of FDX1 decreased on days 7th and 56th, and the protein level remained in accordance with the mRNA level on day 56th. LIAS and Dihydrolipoamide dehydrogenase (DLD) levels were downregulated at all times after silica exposure. In addition, Heatshockprotein70 (HSP70) expression was increased on day 56. In brief, our results demonstrate that there may be cellular cuproptosis during the development of experimental silicosis in mice and show synchronization with enhanced copper loading in mice.
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Affiliation(s)
- Jiarui Xia
- Department of Occupational and Environmental Health, School of Public Health, Zhengzhou University, 100 Science Avenue, Zhengzhou, Henan Province, China
| | - Chenchen Wu
- Department of Occupational and Environmental Health, School of Public Health, Zhengzhou University, 100 Science Avenue, Zhengzhou, Henan Province, China
| | - Xiaofei Jin
- Department of Ultrasound, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, China
| | - Mingcui Ding
- Department of Occupational and Environmental Health, School of Public Health, Zhengzhou University, 100 Science Avenue, Zhengzhou, Henan Province, China
| | - Chengpeng Zhang
- Department of Occupational and Environmental Health, School of Public Health, Zhengzhou University, 100 Science Avenue, Zhengzhou, Henan Province, China
| | - Guangjie Hou
- Department of Occupational and Environmental Health, School of Public Health, Zhengzhou University, 100 Science Avenue, Zhengzhou, Henan Province, China
| | - Changfu Hao
- Department of Occupational and Environmental Health, School of Public Health, Zhengzhou University, 100 Science Avenue, Zhengzhou, Henan Province, China.
| | - Wu Yao
- Department of Occupational and Environmental Health, School of Public Health, Zhengzhou University, 100 Science Avenue, Zhengzhou, Henan Province, China.
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Miserocchi G. The impact of heterogeneity of the air-blood barrier on control of lung extravascular water and alveolar gas exchange. FRONTIERS IN NETWORK PHYSIOLOGY 2023; 3:1142245. [PMID: 37251706 PMCID: PMC10213913 DOI: 10.3389/fnetp.2023.1142245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 04/28/2023] [Indexed: 05/31/2023]
Abstract
The architecture of the air-blood barrier is effective in optimizing the gas exchange as long as it retains its specific feature of extreme thinness reflecting, in turn, a strict control on the extravascular water to be kept at minimum. Edemagenic conditions may perturb this equilibrium by increasing microvascular filtration; this characteristically occurs when cardiac output increases to balance the oxygen uptake with the oxygen requirement such as in exercise and hypoxia (either due to low ambient pressure or reflecting a pathological condition). In general, the lung is well equipped to counteract an increase in microvascular filtration rate. The loss of control on fluid balance is the consequence of disruption of the integrity of the macromolecular structure of lung tissue. This review, merging data from experimental approaches and evidence in humans, will explore how the heterogeneity in morphology, mechanical features and perfusion of the terminal respiratory units might impact on lung fluid balance and its control. Evidence is also provided that heterogeneities may be inborn and they could actually get worse as a consequence of a developing pathological process. Further, data are presented how in humans inter-individual heterogeneities in morphology of the terminal respiratory hinder the control of fluid balance and, in turn, hamper the efficiency of the oxygen diffusion-transport function.
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Yao J, Li Y, Meng F, Shen W, Wen H. Enhancement of suppression oxidative stress and inflammation of quercetin by nano-decoration for ameliorating silica-induced pulmonary fibrosis. ENVIRONMENTAL TOXICOLOGY 2023. [PMID: 37017410 DOI: 10.1002/tox.23781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 02/25/2023] [Accepted: 03/05/2023] [Indexed: 06/19/2023]
Abstract
Silicosis is a life-threatening lung fibrotic disease caused by excessive inhalation of environmental exposure to crystalline silica-containing dust, whereas achieving therapeutic cures are constrained. Antioxidation and anti-inflammation are currently recognized as effective strategies to counteract organ fibrosis. Using naturally occurring phytomedicines quercetin (Qu) has emerged in antagonizing fibrotic disorders involving oxidative stress and inflammation, but unfortunately the hydrophilicity deficiency. Herein, chitosan-assisted encapsulation of Qu in nanoparticles (Qu/CS-NPs) was first fabricated for silicosis-associated fibrosis treatment by pulmonary delivery. Qu/CS-NPs with spherical diameters of ~160 nm, demonstrated a high Qu encapsulated capability, excellent hydrophilic stability, fantastic oxidation radical scavenging action, and outstanding controlled as well as slow release Qu action. A silicosis rat model induced by intratracheal instillation silica was established to estimate the anti-fibrosis effect of Qu/CS-NPs. After intratracheal administration, CS-NPs markedly enhanced Qu anti-fibrotic therapy efficacy, accompanying the evident changes in reducing ROS and MDA production to mitigate oxidative stress, inhibiting IL-1β and TNF-α release, improving lung histological architecture, down-regulating α-SAM levels and suppressing ECM deposition, and thereby ameliorating silica-induced pulmonary fibrosis. Results manifested that the augmented antioxidant and anti-inflammatory activities of Qu by CS-NPs delivery was a result of achieving this remarkable improvement in curative effects. Combined with negligible systemic toxicity, nano-decorated Qu may provide a feasible therapeutic option for silicosis therapy.
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Affiliation(s)
- Jingjing Yao
- School of Medicine, Anhui Provincial Engineering Laboratory of Occupational Health and Safety, Key Laboratory of Industrial Dust Deep Reduction and Occupational Health and Safety of Anhui Higher Education Institutes, Anhui University of Science and Technology, Key Laboratory of Industrial Dust Prevention and Control & Occupational Health and Safety, Ministry of Education, Huainan, China
| | - Yuxuan Li
- Anhui Province Key Laboratory of Medical Physics and Technology, Institute of Health & Medical Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, University of Science and Technology of China, Hefei, China
| | - Fei Meng
- Anhui Province Key Laboratory of Medical Physics and Technology, Institute of Health & Medical Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, University of Science and Technology of China, Hefei, China
| | - Wenwen Shen
- School of Medicine, Anhui Provincial Engineering Laboratory of Occupational Health and Safety, Key Laboratory of Industrial Dust Deep Reduction and Occupational Health and Safety of Anhui Higher Education Institutes, Anhui University of Science and Technology, Key Laboratory of Industrial Dust Prevention and Control & Occupational Health and Safety, Ministry of Education, Huainan, China
| | - Hao Wen
- School of Earth and Environment, Anhui University of Science and Technology, Huainan, China
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Ding M, Pei Y, Zhang C, Qi Y, Xia J, Hao C, Yao W. Exosomal miR-125a-5p regulates T lymphocyte subsets to promote silica-induced pulmonary fibrosis by targeting TRAF6. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 249:114401. [PMID: 36508789 DOI: 10.1016/j.ecoenv.2022.114401] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 12/01/2022] [Accepted: 12/05/2022] [Indexed: 06/17/2023]
Abstract
Silicosis caused by long-term inhalation of crystalline silica during occupational activities seriously threatens the health of occupational populations. Imbalances in T helper 1(Th1), Th2, Th17, and regulatory T cells (Tregs) promote the development of pulmonary silicosis. Exosomes and their contents, especially microRNAs (miRNAs), represent a new type of intercellular signal transmission mediator related to various diseases including pulmonary fibrosis. However, whether exosomal miRNAs can affect the progression of silicosis by regulating T cell differentiation remains to be determined. To test this hypothesis, we established a miR-125a-5p antagomir mouse model and examined changes in miR-125a-5p levels and T cell subtypes. We found that miR-125a-5p levels were increased in lung tissues and serum exosomes in the silica group at 7 days and 28 days. Downregulation of miR-125a-5p attenuated α-smooth muscle actin (α-SMA), collagen I, fibronectin, p-p65, and p-inhibitor of nuclear factor kappa B (NF-κB) kinase (IKK) protein expression, while tumor necrosis factor receptor-associated factor 6 (TRAF6) and p-inhibitor of κBα (IKBα) expression were increased. MiR-125a-5p anta-miR treatment contributes to the maintenance of Th1/Th2 balance during the progression of pulmonary fibrosis. Our findings indicated that knockdown miR-125a-5p could regulate T lymphocyte subsets and significantly reduce pulmonary fibrosis by targeting TRAF6.
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Affiliation(s)
- Mingcui Ding
- Department of Occupational Health and Occupational Disease, School of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Yangqing Pei
- Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Chengpeng Zhang
- Department of Occupational Health and Occupational Disease, School of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Yuanmeng Qi
- Department of Occupational Health and Occupational Disease, School of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Jiarui Xia
- Department of Occupational Health and Occupational Disease, School of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Changfu Hao
- Department of child and Adolecence health, School of public health, Zhengzhou University, Zhengzhou 450001, Henan, China.
| | - Wu Yao
- Department of Occupational Health and Occupational Disease, School of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China.
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