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- W1990108903 abstract "In the present study, we performed in silico and in vitro analyses to evaluate the chemosensitizing effects of 6-(methylsulfinyl)hexyl isothiocyanate (6-MITC) on tumor cells. Our in silico analyses of the ligand–receptor interactions between 6-MITC and the glutamate cysteine ligase (GCL) catalytic subunit (GCLC) revealed that 6-MITC possibly inhibited GCL enzyme activity, and that Cys-249 and Gln-251 were important residues for stable binding of ligands to GCLC. It was further found that 6-MITC interfered with the hydrogen bonds of the cysteinyl and glutamyl moieties of GSH with Cys-249 and Gln-251, respectively, and possibly overrode the feedback inhibition of GCL enzyme activity by GSH. To the best of our knowledge, this is the first in silico analysis to suggest an overriding effect of 6-MITC on GSH-induced feedback inhibition of GCL. In our in vitro analyses, combined treatment with 6-MITC and l-buthionine-S,R-sulfoximine (BSO) depleted GSH within 4 h in tumorigenic human c-Ha-ras and mouse c-myc-cotransfected highly metastatic serum-free mouse embryo-1 (r/m HM-SFME-1) cells, but did not deplete GSH in normal SFME cells. Furthermore, exposure to 6-MITC plus BSO for 4 h, followed by glycyrrhetinic acid (GA) treatment for 3 h, eradicated the tumor cells with minimal damage to the normal cells. The present findings suggest that 6-MITC in combination therapies could be used to sensitize tumor cells to antitumor agents, thereby leading to their eradication." @default.
- W1990108903 created "2016-06-24" @default.
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- W1990108903 date "2013-08-01" @default.
- W1990108903 modified "2023-09-26" @default.
- W1990108903 title "Utilization of 6-(methylsulfinyl)hexyl isothiocyanate for sensitization of tumor cells to antitumor agents in combination therapies" @default.
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- W1990108903 doi "https://doi.org/10.1016/j.bcp.2013.06.008" @default.
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