<i>o</i>-Anisidine Dimer, 2-Methoxy-<i>N</i><sup>4</sup>-(2-methoxyphenyl) Benzene-1,4-diamine, in Rat Urine Associated with Urinary bladder Carcinogenesis
作者:Takuma Kobayashi、Takeshi Toyoda、Yuya Tajima、Shinji Kishimoto、Yuta Tsunematsu、Michio Sato、Kohei Matsushita、Takanori Yamada、Yuko Shimamura、Shuichi Masuda、Masako Ochiai、Kumiko Ogawa、Kenji Watanabe、Takeji Takamura-Enya、Yukari Totsuka、Keiji Wakabayashi、Noriyuki Miyoshi
DOI:10.1021/acs.chemrestox.0c00536
日期:2021.3.15
Monocyclic aromatic amines, o-toluidine (o-Tol) and its structural analog o-anisidine (o-Ans), are IARC Group 1 and Group 2A urinary bladder carcinogens, respectively, and are involved in metabolic activation and DNA damage. Our recent study revealed that 2-methyl-N4-(2-methylphenyl) benzene-1,4-diamine (MMBD), a p-semidine-type homodimer of o-Tol, was detected and identified in an in vitro reaction of o-Tol
单环芳香胺,ö甲苯胺(ø -Tol)及其结构类似物ö -anisidine(ø -Ans),是IARC组1和组2A膀胱致癌物,并且分别参与代谢活化和DNA损伤。我们最近的研究表明,2-甲基Ñ 4 - (2-甲基苯基)苯-1,4-二胺(MMBD),一个p的-semidine型同型二聚体ø -Tol,检测和在所识别的在体外的反应o -Tol 与 S9 混合物和o 的体内尿样-Tol 暴露的大鼠。据报道,MMBD 具有强致突变、遗传毒性和细胞毒性活性,表明其参与了膀胱癌的发生。然而,o -Ans是否会以与o -Tol类似的方式转化为活性代谢物以诱导 DNA 损伤仍然未知。在这项研究中,我们报告了一种新的o -Ans 代谢物,2-甲氧基-N 4 -(2-甲氧基苯基)苯-1,4-二胺 (MxMxBD),一种通过头尾结合形成的二聚体 ( p - semidine形式),首次在o -Ans 暴露的大鼠尿液中发现。MxMxBD