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Das SK, Ali M, Shetake NG, Pandey BN, Kumar A. Thorium Alters Lung Surfactant Protein Expression in Alveolar Epithelial Cells: In Vitro and In Vivo Investigation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:12330-12342. [PMID: 38772857 DOI: 10.1021/acs.est.4c00254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2024]
Abstract
Thorium-232 (Th), the most abundant naturally occurring nuclear fuel, has been identified as a sustainable source of energy. In view of its large-scale utilization and human evidence of lung disorders and carcinogenicity, it is imperative to understand the effect of Th exposure on lung cells. The present study investigated the effect of Th-dioxide (1-100 μg/mL, 24-48 h) on expression of surfactant proteins (SPs) (SP-A, SP-B, SP-C, and SP-D, which are essential to maintain lung's surface tension and host-defense) in human lung cells (WI26 and A549), representative of alveolar cell type-I and type-II, respectively. Results demonstrated the inhibitory effect of Th on transcriptional expression of SP-A, SP-B, and SP-C. However, Th promoted the mRNA expression of SP-D in A549 and reduced its expression in WI26. To a significant extent, the effect of Th on SPs was found to be in accordance with their protein levels. Moreover, Th exposure altered the extracellular release of SP-D/A from A549, which remained unaltered in WI26. Our results suggested the differential role of oxidative stress and ATM and HSP90 signaling in Th-induced alterations of SPs. These effects of Th were found to be consistent in lung tissues of mice exposed to Th aerosols, suggesting a potential role of SPs in Th-associated lung disorders.
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Affiliation(s)
- Sourav Kumar Das
- Radiation Biology & Health Sciences Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
- Homi Bhabha National Institute, Anushaktinagar, Mumbai 400 094, India
| | - Manjoor Ali
- Radiation Biology & Health Sciences Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
| | - Neena Girish Shetake
- Radiation Biology & Health Sciences Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
- Homi Bhabha National Institute, Anushaktinagar, Mumbai 400 094, India
| | - Badri Narain Pandey
- Radiation Biology & Health Sciences Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
- Homi Bhabha National Institute, Anushaktinagar, Mumbai 400 094, India
| | - Amit Kumar
- Radiation Biology & Health Sciences Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
- Homi Bhabha National Institute, Anushaktinagar, Mumbai 400 094, India
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Lee J, Jang J, Cha SR, Lee SB, Hong SH, Bae HS, Lee YJ, Yang SR. Recombinant Human Bone Morphogenetic Protein-2 Priming of Mesenchymal Stem Cells Ameliorate Acute Lung Injury by Inducing Regulatory T Cells. Immune Netw 2023; 23:e48. [PMID: 38188599 PMCID: PMC10767548 DOI: 10.4110/in.2023.23.e48] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 12/11/2023] [Accepted: 12/11/2023] [Indexed: 01/09/2024] Open
Abstract
Mesenchymal stromal/stem cells (MSCs) possess immunoregulatory properties and their regulatory functions represent a potential therapy for acute lung injury (ALI). However, uncertainties remain with respect to defining MSCs-derived immunomodulatory pathways. Therefore, this study aimed to investigate the mechanism underlying the enhanced effect of human recombinant bone morphogenic protein-2 (rhBMP-2) primed ES-MSCs (MSCBMP2) in promoting Tregs in ALI mice. MSC were preconditioned with 100 ng/ml rhBMP-2 for 24 h, and then administrated to mice by intravenous injection after intratracheal injection of 1 mg/kg LPS. Treating MSCs with rhBMP-2 significantly increased cellular proliferation and migration, and cytokines array reveled that cytokines release by MSCBMP2 were associated with migration and growth. MSCBMP2 ameliorated LPS induced lung injury and reduced myeloperoxidase activity and permeability in mice exposed to LPS. Levels of inducible nitric oxide synthase were decreased while levels of total glutathione and superoxide dismutase activity were further increased via inhibition of phosphorylated STAT1 in ALI mice treated with MSCBMP2. MSCBMP2 treatment increased the protein level of IDO1, indicating an increase in Treg cells, and Foxp3+CD25+ Treg of CD4+ cells were further increased in ALI mice treated with MSCBMP2. In co-culture assays with MSCs and RAW264.7 cells, the protein level of IDO1 was further induced in MSCBMP2. Additionally, cytokine release of IL-10 was enhanced while both IL-6 and TNF-α were further inhibited. In conclusion, these findings suggest that MSCBMP2 has therapeutic potential to reduce massive inflammation of respiratory diseases by promoting Treg cells.
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Affiliation(s)
- Jooyeon Lee
- Department of Thoracic and Cardiovascular Surgery, School of Medicine, Kangwon National University, Chuncheon 24341, Korea
| | - Jimin Jang
- Department of Thoracic and Cardiovascular Surgery, School of Medicine, Kangwon National University, Chuncheon 24341, Korea
| | - Sang-Ryul Cha
- Department of Thoracic and Cardiovascular Surgery, School of Medicine, Kangwon National University, Chuncheon 24341, Korea
| | - Se Bi Lee
- Department of Thoracic and Cardiovascular Surgery, School of Medicine, Kangwon National University, Chuncheon 24341, Korea
| | - Seok-Ho Hong
- Department of Internal Medicine, School of Medicine, Kangwon National University, Chuncheon 24341, Korea
| | - Han-Sol Bae
- Cellular Therapeutics Team, Daewoong Pharmaceutical, Yongin 17028, Korea
| | - Young Jin Lee
- Cellular Therapeutics Team, Daewoong Pharmaceutical, Yongin 17028, Korea
| | - Se-Ran Yang
- Department of Thoracic and Cardiovascular Surgery, School of Medicine, Kangwon National University, Chuncheon 24341, Korea
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Wu YH, Ho SY, Wang BJ, Wang YJ. Mechanisms of Nanotoxicology and the Important Role of Alternative Testing Strategies. Int J Mol Sci 2022; 23:ijms23158204. [PMID: 35897780 PMCID: PMC9331988 DOI: 10.3390/ijms23158204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Accepted: 06/15/2022] [Indexed: 02/04/2023] Open
Affiliation(s)
- Yuan-Hua Wu
- Department of Radiation Oncology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan;
| | - Sheng-Yow Ho
- Department of Radiation Oncology, Chi Mei Medical Center, Tainan 736, Taiwan;
- Graduate Institute of Medical Sciences, Chang Jung Christian University, Tainan 711, Taiwan
| | - Bour-Jr Wang
- Department of Cosmetic Science and Institute of Cosmetic Science, Chia Nan University of Pharmacy and Science, Tainan 71710, Taiwan
- Department of Occupational and Environmental Medicine, National Cheng Kung University Hospital, Tainan 70403, Taiwan
- Correspondence: (B.-J.W.); (Y.-J.W.); Tel.: +886-6-235-3535 (ext. 5956) (B.-J.W.); +886-6-235-3535 (ext. 5804) (Y.-J.W.); Fax: +886-6-208-5793 (B.-J.W.); +886-6-275-2484 (Y.-J.W.)
| | - Ying-Jan Wang
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan
- Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 404, Taiwan
- Correspondence: (B.-J.W.); (Y.-J.W.); Tel.: +886-6-235-3535 (ext. 5956) (B.-J.W.); +886-6-235-3535 (ext. 5804) (Y.-J.W.); Fax: +886-6-208-5793 (B.-J.W.); +886-6-275-2484 (Y.-J.W.)
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A Biomonitoring Pilot Study in Workers from a Paints Production Plant Exposed to Pigment-Grade Titanium Dioxide (TiO 2). TOXICS 2022; 10:toxics10040171. [PMID: 35448433 PMCID: PMC9028136 DOI: 10.3390/toxics10040171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Revised: 03/25/2022] [Accepted: 03/29/2022] [Indexed: 12/10/2022]
Abstract
Among particulate matter composing paints, titanium dioxide (TiO2) forms about 20% of the final suspension. Although TiO2 is broadly used in many applications, TiO2 powders represent an established respiratory hazard for workers with long-term exposure. In 35 workers of a paints production plant (15 exposed and 20 not exposed), we assessed pro-inflammatory cytokines (IL-1β, TNF-α, IL-10, IL-17), surfactant protein D (SP-D) and Krebs von den Lungen-6 glycoprotein (KL-6) in exhaled breath condensate (EBC). In urine samples, we measured 8-isoprostane (Isop) and Malondialdehyde (MDA) as biomarkers of oxidative stress, and Titanium (Ti-U) as a biomarker of exposure. Health status, habits and occupational history were recorded. Airborne respirable dusts and Ti were quantified. Particle number concentration and average diameter (nm) were detected by a NanoTracer™ monitoring device. Ti was measurable in filters collected at the respiratory breathing zone (0.11−0.44 µg/m3 8-h TWA). IL-1β and IL-10 values were significantly higher in exposed workers, whereas SP-D was significantly lower (p < 0.001). KL-6 was significantly higher in workers than in controls (p < 0.01). MDA levels were significantly increased in exposed workers and were positively correlated with Ti-U. Exposure to TiO2 in paint production is associated with the subtle alterations of lung pathobiology. These findings suggest the need for an integrated approach relying on both personal exposure and biomarker assessment to improve the hazard characterisation in occupational settings.
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Higashi Y, Morimoto Y, Nishida C, Tomonaga T, Izumi H, Wang K, Higashi H, Ono R, Sumiya K, Sakurai K, Yamasaki K, Yatera K. Pulmonary disorder induced by cross‐linked polyacrylic acid. J Occup Health 2022; 64:e12369. [DOI: 10.1002/1348-9585.12369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 10/03/2022] [Accepted: 10/21/2022] [Indexed: 12/03/2022] Open
Affiliation(s)
- Yasuyuki Higashi
- Department of Respiratory Medidatacine University of Occupational and Environmental Health Fukuoka Japan
| | - Yasuo Morimoto
- Department of Occupational Pneumology Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health Fukuoka Japan
| | - Chinatsu Nishida
- Department of Respiratory Medidatacine University of Occupational and Environmental Health Fukuoka Japan
| | - Taisuke Tomonaga
- Department of Occupational Pneumology Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health Fukuoka Japan
| | - Hiroto Izumi
- Department of Occupational Pneumology Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health Fukuoka Japan
| | - Ke‐Yong Wang
- Shared‐Use Research Center, School of Medicine University of Occupational and Environmental Health, Japan Fukuoka Japan
| | - Hidenori Higashi
- Department of Environmental Health Engineering Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health Fukuoka Japan
| | - Ryohei Ono
- Department of Chemistry and Biochemistry The University of Kitakyushu Fukuoka Japan
| | - Kazuki Sumiya
- Department of Chemistry and Biochemistry The University of Kitakyushu Fukuoka Japan
| | - Kazuo Sakurai
- Department of Chemistry and Biochemistry The University of Kitakyushu Fukuoka Japan
| | - Kei Yamasaki
- Department of Respiratory Medidatacine University of Occupational and Environmental Health Fukuoka Japan
| | - Kazuhiro Yatera
- Department of Respiratory Medidatacine University of Occupational and Environmental Health Fukuoka Japan
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