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JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
Discovery of Clinically Used Octenidine as NRAS Repressor That Effectively Inhibits NRAS -Mutant Melanoma.
Journal of Medicinal Chemistry 2023 April 14
Mutations in NRAS promote tumorigenesis and drug resistance. As this protein is often considered an undruggable target, it is urgent to develop novel strategies to suppress NRAS for anticancer therapy. Recent reports indicated that a G-quadruplex (G4) structure formed in the untranslated region of NRAS mRNA can downregulate NRAS translation, suggesting a potential NRAS suppression strategy. Here, we developed a novel cell-based method for large-scale screening of NRAS G4 ligand using the G-quadruplex-triggered fluorogenic hybridization probe and successfully identified the clinically used agent Octenidine as a potent NRAS repressor. This compound suppressed NRAS translation, blocked the MAPK and PI3K-AKT signaling, and caused concomitant cell cycle arrest, apoptosis, and autophagy. It exhibited better antiproliferation effects over clinical antimelanoma agents and could inhibit the growth of NRAS -mutant melanoma in a xenograft mouse model. Our results suggest that Octenidine may be a prominent anti- NRAS -mutant melanoma agent and represent a new NRAS -mutant melanoma therapy option.
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