1
|
Azam S, Liu S, Bhattacharyya S, Mishra DP. Prevalence of nano-sized coal mine dust in North and Central Appalachian coal mines - Insights from SEM-EDS imaging. JOURNAL OF HAZARDOUS MATERIALS 2024; 476:135226. [PMID: 39029186 DOI: 10.1016/j.jhazmat.2024.135226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Revised: 06/23/2024] [Accepted: 07/14/2024] [Indexed: 07/21/2024]
Abstract
The increasing prevalence of coal mine dust-related lung diseases in coal miners calls for urgent and meticulous scrutiny of airborne respirable coal mine dust (RCMD), specifically focusing on particles at the nano-level. This necessity is driven by expanding research, including the insights revealed in this paper, that establish the presence and significantly increased toxicity of nano-sized coal dust particles in contrast to their larger counterparts. This study presents an incontrovertible visual proof of these tiny particulates in samples collected from underground mines, utilizing advanced techniques such as scanning electron microscopy (SEM) and energy-dispersive spectroscopy (EDS). The intricate elemental composition of nano-sized coal dust identified through EDS analysis reveals the presence of elements such as silica and iron, which are known to contribute to lung pathologies when inhaled over prolonged periods. The outcomes of the statistical analyses reveal significant relationships between particle size and elemental composition, highlighting that smaller particles tend to have higher carbon content, while larger particles exhibit increased concentrations of elements like silica and aluminum. These analyses underscore the complex interactions within nano-sized coal dust, providing critical insights into their behavior, transport, and health impacts. The nano-sized coal dust could invade the alveoli, carrying these toxic elements from where they are impossible to exhale. The revelation of nano-sized coal dust's existence and the associated health hazards necessitate their incorporation into the regulatory framework governing the coal mining industry. This study lays the groundwork for heightened protective measures for miners, urging the invention of state-of-the-art sampling instruments, comprehensive physicochemical profiling of RCMD nanoparticles, and the pursuit of groundbreaking remedies to neutralize their toxic impact. These findings advocate for a paradigm shift in how the coal mining industry views and handles particulate matter, proposing a re-evaluation of occupational health standards and a call to action for protecting coal miners worldwide.
Collapse
Affiliation(s)
- Sikandar Azam
- Department of Energy and Mineral Engineering, G3 Center and Energy Institute, The Pennsylvania State University, University Park, PA 16802, USA
| | - Shimin Liu
- Department of Energy and Mineral Engineering, G3 Center and Energy Institute, The Pennsylvania State University, University Park, PA 16802, USA.
| | - Sekhar Bhattacharyya
- Department of Energy and Mineral Engineering, G3 Center and Energy Institute, The Pennsylvania State University, University Park, PA 16802, USA
| | - Devi Prasad Mishra
- Department of Mining Engineering, Indian Institute of Technology (Indian School of Mines), Dhanbad 826004, India
| |
Collapse
|
2
|
Li B, Wang J, Zhao Y, Zou Y, Cao H, Jin H, Tao X, Mu M. Vitamin D3 reverses immune tolerance and enhances the cytotoxicity of effector T cells in coal pneumoconiosis. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 271:115972. [PMID: 38218105 DOI: 10.1016/j.ecoenv.2024.115972] [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: 11/09/2023] [Revised: 12/31/2023] [Accepted: 01/08/2024] [Indexed: 01/15/2024]
Abstract
Coal worker's pneumoconiosis (CWP) is a common occupational disease that coal miners are highly susceptible due to long-term exposure to coal dust particles (CDP). CWP can induce the accumulation of immune cells surrounding the bronchioles and alveoli in the lungs, resulting in pulmonary fibrosis and compromised immune function. Using single-cell RNA sequencing (scRNA-Seq), our previous studies disclose that CDP exposure triggers heterogeneity of transcriptional profiles in mouse pneumoconiosis, while Vitamin D3 (VitD3) supplementation reduces CDP-induced cytotoxicity; however, the mechanism by which how VitD3 regulates immune status in coal pneumoconiosis remains unclear. In this study, we elucidated the heterogeneity of pulmonary lymphocytes in mice exposed to CDP and demonstrated the therapeutic efficacy of VitD3 using scRNA-Seq dataset. The validation of key lymphocyte markers and their functional molecules was performed using immunofluorescence. The results demonstrated that VitD3 increased the number of naive T cells by modulating CD4 + T cell differentiation and decreased the number of Treg cells in CDP-exposed mice, thereby enhancing the cytotoxic activity of CD8 + effector T cells. These effects markedly alleviated lung fibrosis and symptoms. Taken together, the mechanism by which VitD3 regulates the functions of lymphocytes in CWP provides a new perspective for further research on the prevention and treatment of CWP.
Collapse
Affiliation(s)
- Bing Li
- Joint Research Center for Occupational Medicine and Health of IHM, Anhui University of Science and Technology, Huainan 232000, China; School of Public Health, Anhui University of Science and Technology, HeFei 230041, China; Key Laboratory of Industrial Dust Prevention and Control, Occupational Safety and Health, Ministry of Education, Anhui University of Science and Technology, Huainan 232000, China; Anhui Institute of Occupational Safety and Health, Anhui University of Science and Technology, Huainan 232000, China
| | - Jianhua Wang
- Joint Research Center for Occupational Medicine and Health of IHM, Anhui University of Science and Technology, Huainan 232000, China; School of Public Health, Anhui University of Science and Technology, HeFei 230041, China; Key Laboratory of Industrial Dust Prevention and Control, Occupational Safety and Health, Ministry of Education, Anhui University of Science and Technology, Huainan 232000, China; Anhui Institute of Occupational Safety and Health, Anhui University of Science and Technology, Huainan 232000, China; Cancer Institute, Shanghai Urological Cancer Institute, Fudan University Shanghai Cancer Center, Fudan University, Shanghai 200032, China.
| | - Yehong Zhao
- Joint Research Center for Occupational Medicine and Health of IHM, Anhui University of Science and Technology, Huainan 232000, China; School of Public Health, Anhui University of Science and Technology, HeFei 230041, China; Key Laboratory of Industrial Dust Prevention and Control, Occupational Safety and Health, Ministry of Education, Anhui University of Science and Technology, Huainan 232000, China; Anhui Institute of Occupational Safety and Health, Anhui University of Science and Technology, Huainan 232000, China
| | - Yuanjie Zou
- Joint Research Center for Occupational Medicine and Health of IHM, Anhui University of Science and Technology, Huainan 232000, China; School of Public Health, Anhui University of Science and Technology, HeFei 230041, China; Key Laboratory of Industrial Dust Prevention and Control, Occupational Safety and Health, Ministry of Education, Anhui University of Science and Technology, Huainan 232000, China; Anhui Institute of Occupational Safety and Health, Anhui University of Science and Technology, Huainan 232000, China
| | - Hangbing Cao
- Joint Research Center for Occupational Medicine and Health of IHM, Anhui University of Science and Technology, Huainan 232000, China; School of Public Health, Anhui University of Science and Technology, HeFei 230041, China; Key Laboratory of Industrial Dust Prevention and Control, Occupational Safety and Health, Ministry of Education, Anhui University of Science and Technology, Huainan 232000, China; Anhui Institute of Occupational Safety and Health, Anhui University of Science and Technology, Huainan 232000, China
| | - Haibo Jin
- Joint Research Center for Occupational Medicine and Health of IHM, Anhui University of Science and Technology, Huainan 232000, China; School of Public Health, Anhui University of Science and Technology, HeFei 230041, China; Key Laboratory of Industrial Dust Prevention and Control, Occupational Safety and Health, Ministry of Education, Anhui University of Science and Technology, Huainan 232000, China; Anhui Institute of Occupational Safety and Health, Anhui University of Science and Technology, Huainan 232000, China
| | - Xinrong Tao
- Joint Research Center for Occupational Medicine and Health of IHM, Anhui University of Science and Technology, Huainan 232000, China; School of Public Health, Anhui University of Science and Technology, HeFei 230041, China; Key Laboratory of Industrial Dust Prevention and Control, Occupational Safety and Health, Ministry of Education, Anhui University of Science and Technology, Huainan 232000, China; Anhui Institute of Occupational Safety and Health, Anhui University of Science and Technology, Huainan 232000, China.
| | - Min Mu
- Joint Research Center for Occupational Medicine and Health of IHM, Anhui University of Science and Technology, Huainan 232000, China; School of Public Health, Anhui University of Science and Technology, HeFei 230041, China; Key Laboratory of Industrial Dust Prevention and Control, Occupational Safety and Health, Ministry of Education, Anhui University of Science and Technology, Huainan 232000, China; Anhui Institute of Occupational Safety and Health, Anhui University of Science and Technology, Huainan 232000, China.
| |
Collapse
|
3
|
Kamanzi C, Becker M, Von Holdt J, Hsu NJ, Konečný P, Broadhurst J, Jacobs M. Machine Learning Demonstrates Dominance of Physical Characteristics over Particle Composition in Coal Dust Toxicity. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:1636-1647. [PMID: 38186056 PMCID: PMC10809749 DOI: 10.1021/acs.est.3c08732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 12/12/2023] [Accepted: 12/26/2023] [Indexed: 01/09/2024]
Abstract
Mine dust has been linked to the development of pneumoconiotic diseases such as silicosis and coal workers' pneumoconiosis. Currently, it is understood that the physicochemical and mineralogical characteristics drive the toxic nature of dust particles; however, it remains unclear which parameter(s) account for the differential toxicity of coal dust. This study aims to address this issue by demonstrating the use of the partial least squares regression (PLSR) machine learning approach to compare the influence of D50 sub 10 μm coal particle characteristics against markers of cellular damage. The resulting analysis of 72 particle characteristics against cytotoxicity and lipid peroxidation reflects the power of PLSR as a tool to elucidate complex particle-cell relationships. By comparing the relative influence of each characteristic within the model, the results reflect that physical characteristics such as shape and particle roughness may have a greater impact on cytotoxicity and lipid peroxidation than composition-based parameters. These results present the first multivariate assessment of a broad-spectrum data set of coal dust characteristics using latent structures to assess the relative influence of particle characteristics on cellular damage.
Collapse
Affiliation(s)
- Conchita Kamanzi
- Department
of Chemical Engineering, Minerals to Metals Initiative, University of Cape Town, Cape Town 7701, South Africa
- Department
of Chemical Engineering, Centre for Minerals Research, University of Cape Town, Cape Town 7701, South Africa
| | - Megan Becker
- Department
of Chemical Engineering, Minerals to Metals Initiative, University of Cape Town, Cape Town 7701, South Africa
- Department
of Chemical Engineering, Centre for Minerals Research, University of Cape Town, Cape Town 7701, South Africa
| | - Johanna Von Holdt
- Department
of Environmental and Geographical Science, University of Cape Town, Cape
Town 7701, South Africa
| | - Nai-Jen Hsu
- Welcome
Centre for Infectious Diseases Research in Africa, Institute for Infectious
Diseases and Molecular Medicine, Division of Immunology, Department
of Pathology, University of Cape Town, Cape Town 7935, South Africa
| | - Petr Konečný
- Welcome
Centre for Infectious Diseases Research in Africa, Institute for Infectious
Diseases and Molecular Medicine, Division of Immunology, Department
of Pathology, University of Cape Town, Cape Town 7935, South Africa
| | - Jennifer Broadhurst
- Department
of Chemical Engineering, Minerals to Metals Initiative, University of Cape Town, Cape Town 7701, South Africa
| | - Muazzam Jacobs
- Welcome
Centre for Infectious Diseases Research in Africa, Institute for Infectious
Diseases and Molecular Medicine, Division of Immunology, Department
of Pathology, University of Cape Town, Cape Town 7935, South Africa
- Neuroscience
Institute, University of Cape Town, Cape Town 7935, South Africa
- National
Health Laboratory Service, Johannesburg 2193, South Africa
| |
Collapse
|
4
|
Wang Z, Wang M, Zeng X, Yue X, Wei P. Nanomaterial-induced pyroptosis: a cell type-specific perspective. Front Cell Dev Biol 2024; 11:1322305. [PMID: 38264354 PMCID: PMC10803419 DOI: 10.3389/fcell.2023.1322305] [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: 10/17/2023] [Accepted: 12/28/2023] [Indexed: 01/25/2024] Open
Abstract
This review presents the advancements in nanomaterial (NM)-induced pyroptosis in specific types of cells. We elucidate the relevance of pyroptosis and delineate its mechanisms and classifications. We also retrospectively analyze pyroptosis induced by various NMs in a broad spectrum of non-tumorous cellular environments to highlight the multifunctionality of NMs in modulating cell death pathways. We identify key knowledge gaps in current research and propose potential areas for future exploration. This review emphasizes the need to focus on less-studied areas, including the pathways and mechanisms of NM-triggered pyroptosis in non-tumor-specific cell types, the interplay between biological and environmental factors, and the interactions between NMs and cells. This review aims to encourage further investigations into the complex interplay between NMs and pyroptosis, thereby providing a basis for developing safer and more effective nanomedical therapeutic applications.
Collapse
Affiliation(s)
- Zhiyong Wang
- Department of Immunology, Zhuhai Campus of Zunyi Medical University, Zhuhai, China
| | - Min Wang
- Department of Pharmaceutics, Zhuhai Campus of Zunyi Medical University, Zhuhai, China
| | - Xuan Zeng
- Department of Pharmaceutics, Guangdong Provincial People’s Hospital Zhuhai Hospital, Zhuhai, China
| | - Xupeng Yue
- College of Bioengineering, Zhuhai Campus of Zunyi Medical University, Zhuhai, China
| | - Pei Wei
- Department of Immunology, Zhuhai Campus of Zunyi Medical University, Zhuhai, China
| |
Collapse
|
5
|
Priyam A, Seth P, Mishra J, Manna PK, Singh PP. Occupational safety assessment of biogenic urea nanofertilisers using in vitro pulmonary, and in vivo ocular models. Heliyon 2023; 9:e21623. [PMID: 38027743 PMCID: PMC10660040 DOI: 10.1016/j.heliyon.2023.e21623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 10/11/2023] [Accepted: 10/25/2023] [Indexed: 12/01/2023] Open
Abstract
Nanomaterials (NMs) are now gaining popularity to be used in agriculture as fertilisers to reduce the dose of conventional fertilisers and enhance nutrient use efficiency. Urea has found its application as a conventional nitrogenous fertiliser since long, however, the nutrient use efficiency of the bulk form of urea is low due to issues related to ammonia volatilisation. This study proposes a biogenic synthesis route to develop urea nanoparticles that can be used as nano-fertiliser for better uptake and hence improved nutrient efficiency. Large scale production and widespread application of these nano-fertilisers to the agricultural fields will enhance the direct exposure to workers and farmers. Therefore, the occupational safety evaluation becomes critical. In this study, we report a new method for synthesis of urea nanoparticles (TNU, absolute size: 12.14 ± 7.79 nm) followed by nano-safety evaluation. Herein, the pulmonary and ocular compatibilities of TNU were investigated in vitro and in vivo respectively. The assay for cellular mitochondrial activity was carried out on human lung fibroblasts (WI-38) under varied TNU exposure concentrations up to 72 h. The acute biocompatibility effect, ocular irritation and sub-lethal effects were measured on New Zealand Rabbit. The results show that TNU do not exhibit any cytotoxicity and detrimental cell mitochondrial activity up to the highest tested concentration of 1000 μg/mL and 72 h of testing. The animal experiment results also show that neither acute nor sub-lethal toxic effects can be detected after TNU ocular instillation up to 21 days when tested up to environmentally relevant concentration of 15 μg/mL. These results suggest the occupational safety of biogenic urea nanoparticles and support its application as nanofertiliser.
Collapse
Affiliation(s)
- Ayushi Priyam
- National Centre of Excellence for Advanced Research in Agricultural Nanotechnology, TERI - Deakin Nanobiotechnology Centre, Sustainable Agriculture Division, The Energy and Resources Institute (TERI), New Delhi, 110003, India
- IMPACT, School of Medicine, Deakin University, Geelong, Victoria, 3217, Australia
| | - Prerna Seth
- National Centre of Excellence for Advanced Research in Agricultural Nanotechnology, TERI - Deakin Nanobiotechnology Centre, Sustainable Agriculture Division, The Energy and Resources Institute (TERI), New Delhi, 110003, India
| | - Jibananda Mishra
- AAL Biosciences Research Pvt. Ltd., Panchkula, Haryana, 134109, India
| | - Palash Kumar Manna
- National Centre of Excellence for Advanced Research in Agricultural Nanotechnology, TERI - Deakin Nanobiotechnology Centre, Sustainable Agriculture Division, The Energy and Resources Institute (TERI), New Delhi, 110003, India
| | - Pushplata Prasad Singh
- National Centre of Excellence for Advanced Research in Agricultural Nanotechnology, TERI - Deakin Nanobiotechnology Centre, Sustainable Agriculture Division, The Energy and Resources Institute (TERI), New Delhi, 110003, India
| |
Collapse
|
6
|
Coal dust nanoparticles induced pulmonary fibrosis by promoting inflammation and epithelial-mesenchymal transition via the NF-κB/NLRP3 pathway driven by IGF1/ROS-mediated AKT/GSK3β signals. Cell Death Dis 2022; 8:500. [PMID: 36581638 PMCID: PMC9800584 DOI: 10.1038/s41420-022-01291-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 12/20/2022] [Accepted: 12/21/2022] [Indexed: 12/30/2022]
Abstract
Pneumoconiosis is the most common and serious disease among coal miners. In earlier work on this subject, we documented that coal dust (CD) nanoparticles (CD-NPs) induced pulmonary fibrosis (PF) more profoundly than did CD micron particles (CD-MPs), but the mechanism has not been thoroughly studied. Based on the GEO database, jveen, STRING, and Cytoscape tools were used to screen hub genes regulating PF. Particle size distribution of CD were analyzed with Malvern nanoparticle size potentiometer. Combining 8 computational methods, we found that IGF1, POSTN, MMP7, ASPN, and CXCL14 may act as hub genes regulating PF. Based on the high score of IGF1 and its important regulatory role in various tissue fibrosis, we selected it as the target gene in this study. Activation of the IGF1/IGF1R axis promoted CD-NPs-induced PF, and inhibition of the axis activation had the opposite effect in vitro and in vivo. Furthermore, activation of the IGF1/IGF1R axis induced generation of reactive oxygen species (ROS) to promote epithelial-mesenchymal transition (EMT) in alveolar epithelial cells (AECs) to accelerate PF. High-throughput gene sequencing based on lung tissue suggested that cytokine-cytokine receptor interaction and the NF-kB signaling pathway play a key role in PF. Also, ROS induced inflammation and EMT by the activation of the NF-kB/NLRP3 axis to accelerate PF. ROS can induce the activation of AKT/GSK3β signaling, and inhibition of it can inhibit ROS-induced inflammation and EMT by the NF-kB/NLRP3 axis, thereby inhibiting PF. CD-NPs induced PF by promoting inflammation and EMT via the NF-κB/NLRP3 pathway driven by IGF1/ROS-mediated AKT/GSK3β signals. This study provides a valuable experimental basis for the prevention and treatment of coal workers' pneumoconiosis. Illustration of the overall research idea of this study: IGF1 stimulates coal dust nanoparticles induced pulmonary fibrosis by promoting inflammation and EMT via the NF-κB/NLRP3 pathway driven by ROS-mediated AKT/GSK3β signals.
Collapse
|