Toxic metals in the regulation of epithelial-mesenchymal plasticity: demons or angels?
- PMID: 35897065
- PMCID: PMC9327425
- DOI: 10.1186/s12935-022-02638-3
Toxic metals in the regulation of epithelial-mesenchymal plasticity: demons or angels?
Abstract
Epithelial cells can trans-differentiate into motile mesenchymal cells through a dynamic process known as epithelial-mesenchymal transition (EMT). EMT is crucial in embryonic development and wound healing but also contributes to human diseases such as organ fibrosis and cancer progression. Heavy metals are environmental pollutants that can affect human health in various ways, including causing cancers. The cytotoxicity and carcinogenicity of heavy metals are complex, and studies have demonstrated that some of these metals can affect the progress of EMT. Here, we focus on reviewing the roles of six environmentally common toxic metals concerning EMT: arsenic (AS), cadmium (Cd), cobalt (Co), chromium (Cr), nickel (Ni), and copper (Cu). Noteworthily, the effects of these elements on EMT may vary according to the form, dose, and exposure time; the dual role of heavy metals (e.g., AS, Cd, and Cu) on EMT is also observed, in which, sometimes they can promote while sometimes inhibit the EMT process. Given the vast number of toxicologically relevant metals that exist in nature, we believe a comprehensive understanding of their effects on EMT is required to dictate in what circumstances these metals act more likely as demons or angels.
Keywords: Arsenic; Cadmium; Chromium; Cobalt; Copper; EMT; Nickel; Toxicologically relevant metals.
© 2022. The Author(s).
Conflict of interest statement
The authors declare that they have no competing interests.
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