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Báo cáo khoa học: Covalent binding to glutathione of the DNA-alkylating antitumor agent, S23906-1

Chia sẻ: Nguyen Thang | Ngày: | Loại File: PDF | Số trang:12

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The benzoacronycine derivative, S23906-1, was character-ized recently as a novel potent antitumor agent through alkylation of theN2 positionof guanines inDNA.We show here that its reactivity towards DNA can be modulated by glutathione (GSH). The formation of covalent adducts between GSH and S23906-1 was evidenced by EI-MS, and the use of different GSH derivatives, amino acids and dipeptides revealed that the cysteine thiol group is absolutely required for complex formation because glutathione disul-fide (GSSG) and other S-blocked derivatives failed to react covalently with S23906-1. ...

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Nội dung Text: Báo cáo khoa học: Covalent binding to glutathione of the DNA-alkylating antitumor agent, S23906-1

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