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Exposure to naphthalene and β-pinene-derived secondary organic aerosol induced divergent changes in transcript levels of BEAS-2B cells

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Item Type:Article
Title:Exposure to naphthalene and β-pinene-derived secondary organic aerosol induced divergent changes in transcript levels of BEAS-2B cells
Creators Name:Pardo, M. and Offer, S. and Hartner, E. and Di Bucchianico, S. and Bisig, C. and Bauer, S. and Pantzke, J. and Zimmermann, E.J. and Cao, X. and Binder, S. and Kuhn, E. and Huber, A. and Jeong, S. and Käfer, U. and Schneider, E. and Mesceriakovas, A. and Bendl, J. and Brejcha, R. and Buchholz, A. and Gat, D. and Hohaus, T. and Rastak, N. and Karg, E. and Jakobi, G. and Kalberer, M. and Kanashova, T. and Hu, Y. and Ogris, C. and Marsico, A. and Theis, F. and Shalit, T. and Gröger, T. and Rüger, C.P. and Oeder, S. and Orasche, J. and Paul, A. and Ziehm, T. and Zhang, Z.H. and Adam, T. and Sippula, O. and Sklorz, M. and Schnelle-Kreis, J. and Czech, H. and Kiendler-Scharr, A. and Zimmermann, R. and Rudich, Y.
Abstract:The health effects of exposure to secondary organic aerosols (SOAs) are still limited. Here, we investigated and compared the toxicities of soot particles (SP) coated with β-pinene SOA (SOA(βPin)-SP) and SP coated with naphthalene SOA (SOA(Nap)-SP) in a human bronchial epithelial cell line (BEAS-2B) residing at the air-liquid interface. SOA(βPin)-SP mostly contained oxygenated aliphatic compounds from β-pinene photooxidation, whereas SOA(Nap)-SP contained a significant fraction of oxygenated aromatic products under similar conditions. Following exposure, genome-wide transcriptome responses showed an Nrf2 oxidative stress response, particularly for SOA(Nap)-SP. Other signaling pathways, such as redox signaling, inflammatory signaling, and the involvement of matrix metalloproteinase, were identified to have a stronger impact following exposure to SOA(Nap)-SP. SOA(Nap)-SP also induced a stronger genotoxicity response than that of SOA(βPin)-SP. This study elucidated the mechanisms that govern SOA toxicity and showed that, compared to SOAs derived from a typical biogenic precursor, SOAs from a typical anthropogenic precursor have higher toxicological potency, which was accompanied with the activation of varied cellular mechanisms, such as aryl hydrocarbon receptor. This can be attributed to the difference in chemical composition; specifically, the aromatic compounds in the naphthalene-derived SOA had higher cytotoxic potential than that of the β-pinene-derived SOA.
Keywords:RNA Sequencing, Soot Particles, Health Effects, Cytotoxicity
Source:Environment International
Page Range:107366
Date:21 June 2022
Official Publication:https://doi.org/10.1016/j.envint.2022.107366
PubMed:View item in PubMed

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