Pharmacomodulation on Gold-NHC complexes for anticancer applications – is lipophilicity the key point?
摘要:
A series of four new mononuclear cationic gold(I) complexes containing nitrogen functionalized N-heterocyclic carbenes (NHCs) was synthesized and fully characterized by spectroscopic methods. The X-ray structures of three complexes are presented. These lipophilic gold(I) complexes originate from a pharmacomodulation of previously described gold(I)-NHC complexes, by replacing an aliphatic spacer with an aromatic one. The Log P values of the resulting complexes increased by 0.7-1.5, depending on the substituents in comparison to the aliphatic-linker systems. The new series of complexes has been investigated in vitro for their anti -cancer activities in PC-3 (prostate cancer) and T24 (bladder cancer) cell lines and in the non-cancerous MC3T3 (osteoblast) cell line. All tested complexes show high activities against the cancer cell lines with GI(50) values lower than 500 nM. One complex (11) has been selected for further investigations. It has been tested in vitro in six cancer cell lines from different origins (prostate, bladder, lung, bone, liver and breast) and two non-cancerous cell lines (osteoblasts, fibroblasts). Moreover, cellular uptake measurements were indicative of a good bioavailability. By various biochemical assays, this complex was found to effectively inhibit the thioredoxin reductase (TrxR) and its cytotoxicity towards prostate PC-3, bladder 124 and liver HepG2 cells was found to be ROS-dependent. (C) 2018 Elsevier Masson SAS. All rights reserved.
致敬JF Normant教授,他是一位杰出的科学家和一个出色的人,并表彰他在有机金属化学领域的杰出成就。 抽象的 研究了各种代表性的铜(I)交换沸石在Chan-Lam交叉偶联反应中的催化潜力。Cu I -USY似乎是最好的催化剂,并被证明可以在有吸引力,简单和实用的条件下有效地促进C–N交叉偶联过程,即在空气中在无碱的情况下在甲醇中回流。 研究了各种代表性的铜(I)交换沸石在Chan-Lam交叉偶联反应中的催化潜力。Cu I -USY似乎是最好的催化剂,并被证明可以在有吸引力,简单和实用的条件下有效地促进C–N交叉偶联过程,即在空气中在无碱的情况下在甲醇中回流。
Cation-Anion Interaction-Directed Molecular Design Strategy for Mechanochromic Luminescence
作者:Gaocan Li、Feijie Song、Di Wu、Jingbo Lan、Xingyan Liu、Jie Wu、Shuaijun Yang、Dan Xiao、Jingsong You
DOI:10.1002/adfm.201302086
日期:2014.2
a wide variety of applications such as sensors, memory devices, motion systems, security systems, and so forth. However, only few design principles have been disclosed, which greatly impedes the growth of mechanofluorochromic dyes. Here, a strategy of moleculardesign for mechanochromicluminescence is reported, based on the cation–anion interaction‐directed switching of molecular stacking. On the basis
The present invention is to provide a method for measuring an amount of cholesterol in low density lipoproteins (LDL-cholesterol) in a sample specifically at high accuracy and a reagent used in this method, and the present invention can attain such effect that direct measuring an amount of LDL-cholesterol by widely used automatic analyzers can be conducted by using the invention, which has not been possible after known methods.