4.8 Article

N-Acyloxymethyl-phthalimides deliver genotoxic formaldehyde to human cells

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CHEMICAL SCIENCE
卷 14, 期 44, 页码 12498-12505

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ROYAL SOC CHEMISTRY
DOI: 10.1039/d3sc02867d

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Research on formaldehyde is hindered by its reactivity and volatility. A new set of compounds have been developed as formaldehyde delivery agents, which have shown potential for cancer therapeutics.
Formaldehyde is a pollutant and human metabolite that is toxic at high concentrations. Biological studies on formaldehyde are hindered by its high reactivity and volatility, which make it challenging to deliver quantitatively to cells. Here, we describe the development and validation of a set of N-acyloxymethyl-phthalimides as cell-relevant formaldehyde delivery agents. These esterase-sensitive compounds were similarly or less inhibitory to human cancer cell growth than free formaldehyde but the lead compound increased intracellular formaldehyde concentrations, increased cellular levels of thymidine derivatives (implying increased formaldehyde-mediated carbon metabolism), induced formation of cellular DNA-protein cross-links and induced cell death in pancreatic cancer cells. Overall, our N-acyloxymethyl-phthalimides and control compounds provide an accessible and broadly applicable chemical toolkit for formaldehyde biological research and have potential as cancer therapeutics.

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