Abstract
Background
Humidifier disinfectants (HDs), including polyhexamethylene guanidine phosphate (PHMG-p), are commonly used in Korea to prevent microbial growth. Epidemiological studies show that PHMG-p causes severe lung injury, accompanied by pulmonary inflammation and fibrosis. Several studies have examined humidifier disinfectant-associated lung injuries, but few have examined potential carcinogenic activity of PHMG-p. Our previous studies have shown that PHMG-p can induce lung cancer. However, gene expression changes in squamous cell carcinoma (SCC) caused by PHMG-p have not yet been studied.
Objectives
We aimed to determine the PHMG-p-induced changes in transcription levels of genes involved in SCC development and progression in primary bronchial/tracheal epithelial cells (PBTE cells).
Results
Genetic alterations induced by PHMG-p were designated as fold change (FC) values of greater than 2 or less than 0.5. RNA sequencing analysis revealed that two genes were upregulated and sixteen genes were downregulated in the short-term PHMG-p exposure group. Fourteen genes were upregulated and 3 genes were downregulated in the long-term PHMG-p exposure group.
Conclusion
Our data show that PHMG-p induces genetic changes associated with SCC progression in PBTE cells.
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Acknowledgements
This work was supported by a grant from the National Institute of Environment Research (NIER) funded by the Ministry of Environment (MOE) of the Republic of Korea (grant number NIER-2022-04-03-001).
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PYH and JSH analyzed the RNA sequencing data, searched references to genes and wrote this manuscript. KC, NYJ, KJ, PEK, and BYW performed the data analysis. LH1 performed RT-qPCR. KJY, CJY, LYS, and PSA contributed to searching references to this study. LH2 designed this study and edited the manuscript. LJH supervised the study and acquired the funding source. (LH1: Hyejin Lee, LH2: Hong Lee).
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Yoon Hee Park declares that there are no conflicts of interest. Sang Hoon Jeong declares that there are no conflicts of interest. Hyejin Lee declares that there are no conflicts of interest. Cherry Kim declares that there are no conflicts of interest. Yoon Jeong Nam declares that there are no conflicts of interest. Ja Young Kang declares that there are no conflicts of interest. Jin Young Choi declares that there are no conflicts of interest. Yu-Seon Lee declares that there are no conflicts of interest. Su a Park declares that there are no conflicts of interest. Jaeyoung Kim declares that there are no conflicts of interest. Eun-Kee Park declares that there are no conflicts of interest. Yong-Wook Baek declares that there are no conflicts of interest. Hong Lee declares that there are no conflicts of interest. Ju-Han Lee declares that there are no conflicts of interest.
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Park, Y.H., Jeong, S.H., Lee, H. et al. Gene expression related to lung cancer altered by PHMG-p treatment in PBTE cells. Mol. Cell. Toxicol. 19, 205–217 (2023). https://doi.org/10.1007/s13273-022-00319-w
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DOI: https://doi.org/10.1007/s13273-022-00319-w