Abstract
Background
This study seeks to estimate whether a chemical has carcinogenic potential; and if it has carcinogenic activity, its carcinogenic efficacy in humans and experimental animals in terms of oral and inhalation slope factors.
Objective
Target chemicals were selected by literature search using Google Scholar, PubMed, ScienceDirect, etc., among the chemicals set by the Ministry of Employment and Labor in Korea as existing chemicals, and the CSF of each chemical was determined using various sites and programs, including EPA Comptox Dashboard and VEGA Hub QSAR (ver. 1.2.3). The CSF value of each chemical obtained using the Comparative Toxicogenomics Database (CTD) was subjected to gene expression analysis for inhalation carcinogenicity according to CSF value priority estimation, and a database (chemical list) was made possible.
Results
Based on KOSHA-MSDS, GHS classification, and reference values for the CSF of each chemical, they were classified and organized using the OncoLogic 9.0 program. The priority of inhalation carcinogenicity was estimated by comparison with gene expression and CSF values, especially those with large inhalation-related values, and carcinogenesis of priority chemicals for inhalation. All the contents were organized and presented in an Excel file, and the priority of inhalation carcinogenicity was estimated through comparison with gene expression, focusing on CSFs, especially those with large inhalation-related values.
Conclusion
Based on the obtained CSF value, the gene expression analysis of each chemical and toxic gene expression analysis of the CTD, inhalation carcinogenicity priority was estimated and a DB (chemical list) was prepared according to the CSF value.
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Acknowledgements
This study was supported by the Korea Occupational Safety and Health Agency (Ulsan, Republic of Korea), the Ministry of Employment and Labor (Sejong, Republic of Korea), and a Grant-in Aid for chemical research (2022).
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K-T Rim designed the experiments, analyzed the results, and wrote the manuscript.
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Rim, KT. Evaluations of carcinogens from comparison of cancer slope factors: meta-analysis and systemic literature reviews. Mol. Cell. Toxicol. 19, 635–656 (2023). https://doi.org/10.1007/s13273-023-00387-6
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DOI: https://doi.org/10.1007/s13273-023-00387-6