4.7 Article

Development of fluorophore labeled or biotinylated anticancer small molecule NSC243928

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BIOORGANIC & MEDICINAL CHEMISTRY
卷 79, 期 -, 页码 -

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PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.bmc.2023.117171

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LY6K; Triple negative breast cancer; NSC243928

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The small molecule NSC243928 binds to LY6K and induces cancer cell death, but the mechanism is unclear. We have developed chemical tools to understand the molecular mechanisms of NSC243928-LY6K interaction.
Small molecule NSC243928 binds with LY6K, a potential target for the treatment of triple-negative breast cancer, and induces cancer cell death with an unclear mechanism. We have developed chemical tools to identify the molecular mechanisms of NSC243928-LY6K interaction. Herein, we report on the development and synthesis of biotinylated and fluorophore-tethered derivatives of NSC243928 guided by docking studies and molecular dy-namics. Surface plasmon resonance assay indicates that these derivatives retained a direct binding with LY6K protein. Confocal analysis revealed that nitrobenzoxadiazole (NBD) fluorophore tagged NSC243928 is retained in LY6K expressing cancer cells. These novel modified compounds will be employed in future in vitro and in vivo studies to understand the molecular mechanisms of NSC243928 mediated cancer cell death. These studies will pave the path for developing novel targeted therapeutics and understanding any potential side-effects of these treatments for hard-to-treat cancers such as triple-negative breast cancer or other cancers with high expression of LY6K.

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