Printer center nanoparticles alter the DNA repair capacity of human bronchial airway epithelial cells
Nano-enabled, toner-based printing equipment emit nanoparticles during operation. The bioactivity of these nanoparticles as documented in a plethora of published toxicological studies raises concerns about their potential health effects. These include pro-inflammatory effects that can lead to advers...
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sg-ntu-dr.10356-1571632022-05-14T20:11:41Z Printer center nanoparticles alter the DNA repair capacity of human bronchial airway epithelial cells Bitounis, Dimitrios Huang, Qiansheng Toprani, Sneh M. Setyawati, Magdiel Inggrid Oliveira, Nathalia Wu, Zhuoran Tay, Chor Yong Ng, Kee Woei Nagel, Zachary D. Demokritou, Philip School of Materials Science and Engineering School of Biological Sciences Nanyang Environment and Water Research Institute Environmental Chemistry and Materials Centre Engineering::Materials Nanomaterial Inhalation Exposure Printer Particle DNA Damage Nano-enabled, toner-based printing equipment emit nanoparticles during operation. The bioactivity of these nanoparticles as documented in a plethora of published toxicological studies raises concerns about their potential health effects. These include pro-inflammatory effects that can lead to adverse epigenetic alterations and cardiovascular disorders in rats. At the same time, their potential to alter DNA repair pathways at realistic doses remains unclear. In this study, size-fractionated, airborne particles from a printer center in Singapore were sampled and characterized. The PM0.1 size fraction (particles with an aerodynamic diameter less than 100 nm) of printer center particles (PCP) were then administered to human lung adenocarcinoma (Calu-3) or lymphoblastoid (TK6) cells. We evaluated plasma membrane integrity, mitochondrial activity, and intracellular reactive oxygen species (ROS) generation. Moreover, we quantified DNA damage and alterations in the cells' capacity to repair 6 distinct types of DNA lesions. Results show that PCP altered the ability of Calu-3 cells to repair 8oxoG:C lesions and perform nucleotide excision repair, in the absence of acute cytotoxicity or DNA damage. Alterations in DNA repair capacity have been correlated with the risk of various diseases, including cancer, therefore further genotoxicity studies are needed to assess the potential risks of PCP exposure, at both occupational settings and at the end-consumer level. Nanyang Technological University Submitted/Accepted version Reported research has received support from the Nanyang Technological University-Harvard T. H. Chan School of Public Health Initiative for Sustainable Nanotechnology (NTU-Harvard SusNano; NTU-HSPH 18001). Engineered nanomaterials used in the research were characterized by the Engineered Nanomaterials Resource and Coordination Core established at Harvard T. H. Chan School of Public Health (NIH grant # U24ES026946) as part of the Nanotechnology Health Implications Research (NHIR) Consortium. Z.D.N. and S.M.T. were supported by U01ES029520, and Z.D.N. was also supported by P30ES000002. Partial funding for D.B. was provided by the International Initiative for the Environment and Public Health Cyprus Program at the Harvard School of Public Health. QH was supported by China Scholarship Council #201804910248. 2022-05-09T07:05:26Z 2022-05-09T07:05:26Z 2022 Journal Article Bitounis, D., Huang, Q., Toprani, S. M., Setyawati, M. I., Oliveira, N., Wu, Z., Tay, C. Y., Ng, K. W., Nagel, Z. D. & Demokritou, P. (2022). Printer center nanoparticles alter the DNA repair capacity of human bronchial airway epithelial cells. NanoImpact, 25, 100379-. https://dx.doi.org/10.1016/j.impact.2022.100379 2452-0748 https://hdl.handle.net/10356/157163 10.1016/j.impact.2022.100379 2-s2.0-85123632433 25 100379 en NTU-HSPH 18002 NanoImpact © 2022 Elsevier B.V. All rights reserved. This paper was published in NanoImpact and is made available with permission of Elsevier B.V. application/pdf |
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Engineering::Materials Nanomaterial Inhalation Exposure Printer Particle DNA Damage Bitounis, Dimitrios Huang, Qiansheng Toprani, Sneh M. Setyawati, Magdiel Inggrid Oliveira, Nathalia Wu, Zhuoran Tay, Chor Yong Ng, Kee Woei Nagel, Zachary D. Demokritou, Philip Printer center nanoparticles alter the DNA repair capacity of human bronchial airway epithelial cells |
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Nano-enabled, toner-based printing equipment emit nanoparticles during operation. The bioactivity of these nanoparticles as documented in a plethora of published toxicological studies raises concerns about their potential health effects. These include pro-inflammatory effects that can lead to adverse epigenetic alterations and cardiovascular disorders in rats. At the same time, their potential to alter DNA repair pathways at realistic doses remains unclear. In this study, size-fractionated, airborne particles from a printer center in Singapore were sampled and characterized. The PM0.1 size fraction (particles with an aerodynamic diameter less than 100 nm) of printer center particles (PCP) were then administered to human lung adenocarcinoma (Calu-3) or lymphoblastoid (TK6) cells. We evaluated plasma membrane integrity, mitochondrial activity, and intracellular reactive oxygen species (ROS) generation. Moreover, we quantified DNA damage and alterations in the cells' capacity to repair 6 distinct types of DNA lesions. Results show that PCP altered the ability of Calu-3 cells to repair 8oxoG:C lesions and perform nucleotide excision repair, in the absence of acute cytotoxicity or DNA damage. Alterations in DNA repair capacity have been correlated with the risk of various diseases, including cancer, therefore further genotoxicity studies are needed to assess the potential risks of PCP exposure, at both occupational settings and at the end-consumer level. |
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School of Materials Science and Engineering |
author_facet |
School of Materials Science and Engineering Bitounis, Dimitrios Huang, Qiansheng Toprani, Sneh M. Setyawati, Magdiel Inggrid Oliveira, Nathalia Wu, Zhuoran Tay, Chor Yong Ng, Kee Woei Nagel, Zachary D. Demokritou, Philip |
format |
Article |
author |
Bitounis, Dimitrios Huang, Qiansheng Toprani, Sneh M. Setyawati, Magdiel Inggrid Oliveira, Nathalia Wu, Zhuoran Tay, Chor Yong Ng, Kee Woei Nagel, Zachary D. Demokritou, Philip |
author_sort |
Bitounis, Dimitrios |
title |
Printer center nanoparticles alter the DNA repair capacity of human bronchial airway epithelial cells |
title_short |
Printer center nanoparticles alter the DNA repair capacity of human bronchial airway epithelial cells |
title_full |
Printer center nanoparticles alter the DNA repair capacity of human bronchial airway epithelial cells |
title_fullStr |
Printer center nanoparticles alter the DNA repair capacity of human bronchial airway epithelial cells |
title_full_unstemmed |
Printer center nanoparticles alter the DNA repair capacity of human bronchial airway epithelial cells |
title_sort |
printer center nanoparticles alter the dna repair capacity of human bronchial airway epithelial cells |
publishDate |
2022 |
url |
https://hdl.handle.net/10356/157163 |
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1734310303002263552 |