Cytotoxic Homo- and Hetero-Dimers of <i>o</i>-toluidine, <i>o</i>-anisidine, and Aniline Formed by In Vitro Metabolism
作者:Takuma Kobayashi、Shinji Kishimoto、Shogo Watanabe、Yasukiyo Yoshioka、Takeshi Toyoda、Kumiko Ogawa、Kenji Watanabe、Yukari Totsuka、Keiji Wakabayashi、Noriyuki Miyoshi
DOI:10.1021/acs.chemrestox.2c00226
日期:2022.9.19
Several aromatic amine compounds are urinary bladder carcinogens. Activated metabolites and DNA adducts of polycyclic aromatic amines, such as 4-aminobiphenyl, have been identified, whereas those of monocyclic aromatic amines, such as o-toluidine (o-Tol), o-anisidine (o-Ans), and aniline (Ani), have not been completely determined. We have recently reported that o-Tol and o-Ans are metabolically converted
几种芳香胺化合物是膀胱致癌物。多环芳胺的活化代谢物和 DNA 加合物,如 4-氨基联苯,已被鉴定,而单环芳胺,如邻甲苯胺 ( o -Tol)、邻茴香胺 ( o -Ans) 和苯胺 ( Ani),尚未完全确定。我们最近报道了o -Tol 和o -Ans 在体外和体内代谢转化为具有细胞毒性和致突变性的对半胺型二聚体,即 2-甲基-N 4 -(2-甲基苯基)苯-1,4-二胺 (MMBD) 和 2-甲氧基- N 4-(2-methoxyphenyl) benzo-1,4-diamine (MxMxBD),分别表明它们在膀胱癌发生中的作用。在这项研究中,我们发现当o -Tol 和o -Ans 与 S9 混合物一起孵育时,会形成 MMBD 和 MxMxBD 以及两种异构异二聚体 MMxBD 和 MxMBD。因此,o-Tol、o-Ans 和 Ani 中的任意两种(各10 mM)与 S9 混合物一起孵育长达