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- W4366463638 abstract "Inducing high levels of reactive oxygen species (ROS) inside tumor cells is a cancer therapy method termed chemodynamic therapy (CDT). Relying on delivery of Fenton reaction promoters such as Fe2+ , CDT takes advantage of overproduced ROS in the tumor microenvironment. We developed a peptide-H2 S donor conjugate, complexed with Fe2+ , termed AAN-PTC-Fe2+ . The AAN tripeptide was specifically cleaved by legumain, an enzyme overexpressed in glioma cells, to release carbonyl sulfide (COS). Hydrolysis of COS by carbonic anhydrase formed H2 S, an inhibitor of catalase, an enzyme that detoxifies H2 O2 . Fe2+ and H2 S together increased intracellular ROS levels and decreased viability in C6 glioma cells compared with controls lacking either Fe2+ , the AAN sequence, or the ability to generate H2 S. AAN-PTC-Fe2+ performed better than temezolimide while exhibiting no cytotoxicity toward H9C2 cardiomyocytes. This study provides an H2 S-amplified, enzyme-responsive platform for synergistic cancer treatment." @default.
- W4366463638 created "2023-04-22" @default.
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- W4366463638 date "2023-04-20" @default.
- W4366463638 modified "2023-09-26" @default.
- W4366463638 title "Enzyme‐Triggered Chemodynamic Therapy via a Peptide‐H<sub>2</sub>S Donor Conjugate with Complexed Fe<sup>2+</sup>" @default.
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- W4366463638 doi "https://doi.org/10.1002/anie.202302303" @default.
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