铀酰
化学
铀
螯合作用
配体(生物化学)
放射化学
锕系元素
体内
组合化学
无机化学
核化学
离子
有机化学
生物化学
受体
冶金
材料科学
生物技术
生物
作者
Bin Chen,Hong Sheng,Xing Dai,Ximeng Li,Qi Huang,Tingfeng Sun,Dehan Cao,Hailong Zhang,Zhifang Chai,Juan Diwu,Shuao Wang
摘要
The sequestration of uranium, particularly from the deposited bones, has been an incomplete task in chelation therapy for actinide decorporation. Part of the reason is that all previous decorporation ligands are not delicately designed to meet the coordination requirement of uranyl cations. Herein, guided by DFT calculation, we elaborately design a hexadentate ligand (TAM-2LI-MAM2), whose preorganized planar oxo-donor configuration perfectly matches the typical coordination geometry of the uranyl cation. This leads to an ultrahigh binding affinity to uranyl supported by an in vitro desorption experiment of uranyl phosphate. Administration of this ligand by prompt intraperitoneal injection demonstrates its uranyl removal efficiencies from the kidneys and bones are up to 95.4% and 81.2%, respectively, which notably exceeds all the tested chelating agents as well as the clinical drug ZnNa3-DTPA, setting a new record in uranyl decorporation efficacy.
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