investigation demonstrated that DFHBI could also be O-glucuronidated by liver microsomes from all tested animal species, including human, mouse, rat, rabbit, dog, minipig and cynomolgus monkey, but the metabolic kinetics and DFHBI-O-glucuronidation rates in the liver microsomes from various species were much varied. Collectively, our findings suggested that O-glucuronidation was the major metabolic pathway
3,5-二
氟-
4-羟基亚苄基
咪唑啉酮(DFHBI)是绿色荧光蛋白(GFP)类荧光团的小分子,已被广泛用于感测生命系统中的各种
生物分子。这项研究旨在研究人类和六种常用实验动物肝脏制剂中该荧光团的代谢途径和代谢动力学。初步研究表明,DFHBI在I期代谢系统中非常稳定,但是在存在U
DPGA的情况下,该试剂可以很容易地被哺乳动物
UDP-
葡萄糖醛酸转移酶(UGT)转化为其O-
葡萄糖醛酸。人们还发现,DFHBI- ö -glucuronidation强烈降低DFHBI的荧光响应,由于该DFHBI- ö-
葡糖醛酸苷不能与西兰花适体形成荧光复合物。反应表型分析和
化学抑制分析表明,UGT1A1在人肝中的DFHBI- O-
葡萄糖醛酸苷化中起关键作用,而UGT1A3,UGT1A7,UGT1A8,UGT1A9和UGT1A10的贡献程度较小。证明DFHBI还可以进一步调查Ø -glucuronidated通过肝微粒