4.7 Review

The Epitranscriptomic Mechanism of Metal Toxicity and Carcinogenesis

Journal

Publisher

MDPI
DOI: 10.3390/ijms231911830

Keywords

metals; arsenic; cadmium; chromium; epitranscriptome; epitranscriptomics; RNA modification; N6-methyladenosine (m6A); carcinogenesis

Funding

  1. National Institutes of Environmental Health Sciences [R01ES026151, R01ES029496, R01ES029942, 1R01ES032787]

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Metals are common toxic environmental pollutants that cause severe adverse health effects and even cancer. The emerging field of epitranscriptomic study provides new insights into the mechanisms of metal toxicity and carcinogenesis.
Metals are common toxic environmental pollutants. Acute or chronic exposure to metal pollutants causes severe adverse health effects in animals and humans, such as developmental retardation, abnormal metabolism, and disorders of cardiovascular, neurologic, respiratory, reproductive, and urologic systems. Moreover, several metals (arsenic, cadmium, chromium, and nickel) are classified as potent Group I carcinogens and cause various types of cancer in humans. Although the toxicity and carcinogenicity of metal pollutants are well recognized, the underlying mechanisms have not been clearly defined. The epitranscriptome includes all kinds of chemical modifications of all forms of RNA molecules inside a cell. Recent progresses in demonstrating the reversible pattern of RNA modifications and their roles in physiology and pathogenesis represent a breakthrough in the field of RNA biology and function study. The epitranscriptomic study is now an exciting emerging field in toxicology research. While few studies have been conducted so far to determine the epitranscriptomic effects of metal pollutants, they offer novel insights for understanding the mechanisms of metal toxicity and carcinogenesis. The goal of this review is to discuss recent studies on the epitranscriptomic effects of metals and propose some thoughts for future studies in the field.

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