Abstract
Arsenic is a well-known human carcinogen. However, the mechanisms underlying arsenic-induced carcinogenesis remain elusive. Here we show that chronic and low level of arsenic stress induces transformation of the human bronchial epithelial cells, BEAS-2B, and that some of the transformed cells show characteristics of cancer stem-like cells (CSCs). Meanwhile, we demonstrate that arsenic stress dedifferentiates CD61+ BEAS-2B cells into CSC-like CD61− cells featured with noncanonical epithelial–mesenchymal transition (EMT), enhanced chemoresistance, and metastasis. Finally, we show that oncogene c-Myc expression is associated with arsenic-induced tumor initiation and progression. Altogether, our findings highlight a unique mechanism of arsenic-induced transformation of human bronchial epithelial cells and provide a novel therapeutic target for arsenic-initiated lung cancer.
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Acknowledgments
This work was supported by NIH grants R01 ES028263, R01 ES028335, and P30 ES020957 to FC.
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Chang, Q. et al. (2020). Characterization of Arsenic-Induced Cancer Stem-Like Cells. In: Kidder, B. (eds) Stem Cell Transcriptional Networks. Methods in Molecular Biology, vol 2117. Humana, New York, NY. https://doi.org/10.1007/978-1-0716-0301-7_19
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DOI: https://doi.org/10.1007/978-1-0716-0301-7_19
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