硫化氢 (H 2 S) 是一种众所周知的有毒气体,具有臭鸡蛋的气味。已经开发了几种用于 H 2 S 的基于反应的电化学发光 (ECL) 化学传感器;然而,尚未报道在水性介质中对 H 2 S 具有高选择性的均相 ECL 探针。在此,我们报告了一种基于铱 (III) 配合物的 ECL 化学剂量探针,该探针采用两个 7-nitrobenz-2-oxa-1,3-diazol-4-yl (NBD) 基团,称为光诱导电子转移猝灭剂和反应选择性检测 H 2 S 的场所;检测机制涉及H 2基于两个 NBD 基团的不同裂解速率和由反应副产物引起的极弱 ECL 干扰,S 与生物硫醇明显区分开来。该探针经过合理设计,可通过去除通过荧光分析观察到的非特异性背景信号来提高 ECL 分析平台内对 H 2 S 的选择性。与传统荧光方法相比,该分析系统对 H 2 S 具有显着的选择性、快速的反应速率和高灵敏度 (LOD =
2-Indolyl Imidazo [4,5-d] Phenanthroline Derivatives and Their Use in the Treatment for Cancer
申请人:Huesca Mario
公开号:US20100168417A1
公开(公告)日:2010-07-01
2-indolyl imidazo[4,5-d]phenanthroline compounds of Formula I that are capable of intracellular chelation of transition metals and of exerting antiproliferative effects in cancer cells, that are cytostatic and/or cytotoxic, are provided. Compounds of Formula I can also induce apoptosis in cancer cells and are thus capable of exerting a cytotoxic effect on cancer cells. The compounds of Formula I are also capable of selectively inhibiting the proliferation of one or more of prostate cancer cells, colon cancer cells, non-small lung cancer cells and leukemia cells. The compounds of Formula I are also capable of increasing the expression of the zinc-regulated tumour suppressor, KLF4 and thus are useful in inhibiting the proliferation of cancer cells in which KLF4 functions as a tumour-suppressor, including, but not limited to, bladder cancer, cancers of the gastrointestinal tract and various leukemias.
Luminescent ruthenium(II)-para-cymene complexes of aryl substituted imidazo-1,10-phenanthroline as anticancer agents and the effect of remote substituents on cytotoxic activities
Abstract Rutheniumcomplexes are currently significant attention in medicinal chemistry as they offer various properties which make them an appropriate choice for drug development. Herein, a series of ruthenium(II)-p-cymene-2-aryl-imidazo-1,10-phenanthroline derivatives have been prepared and characterised by elemental analysis, infrared, LC-mass and NMR techniques. The structural and chemical properties
GSH-resistant and highly cytoselective ruthenium(<scp>ii</scp>)-<i>p</i>-cymene-(imidazo[4,5-<i>f</i>][1,10]phenanthrolin-2-yl)phenol complexes as potential anticancer agents
Ruthenium(ii)-p-cymene-imidazophenanthroline complexes were developed as highly cytoselective and GSH-resistant anticancer agents against HeLa and Caco-2 cell lines.
Development of a cyclometalated iridium complex with specific intramolecular hydrogen-bonding that acts as a fluorescent marker for the endoplasmic reticulum and causes photoinduced cell death
作者:Soumik Mandal、Dipak K. Poria、Ritabrata Ghosh、Partho Sarothi Ray、Parna Gupta
DOI:10.1039/c4dt00845f
日期:——
Cyclometalated iridiumcomplexes have important applications as phosphorescent probes for cellular imaging due to their photophysical properties. Moreover, these properties also make them potential candidates as photosensitizers for photodynamictherapy (PDT) of tumors and skin diseases. Treatment of MCF7 breast carcinoma cells with a heteroleptic phosphorescent cyclometalated iridium(III) complex C2 followed
由于其光物理特性,环金属化铱配合物作为细胞成像的磷光探针具有重要的应用。此外,这些特性也使它们成为肿瘤和皮肤病光动力疗法(PDT)光敏剂的潜在候选者。用异配磷光环金属铱 ( III ) 复合物C2处理 MCF7 乳腺癌细胞,然后进行共焦成像,结果表明该复合物在内质网中选择性定位并表现出高荧光。以前所未有的方法,系统地改变C2中的官能团或金属核以合成一系列铱(III)络合物(C1-C10)和具有咪唑基修饰菲咯啉配体的有机金属铼络合物C11,已经表明了官能团及其负责这种选择性定位的相互作用。值得注意的是,用C2处理的细胞暴露在 405 nm 的辐射下一小时会导致膜起泡和细胞死亡,这证明了该化合物的光敏特性。