A Design of Fluorescent Probes for Superoxide Based on a Nonredox Mechanism
摘要:
Fluorometric detection of O2-* is performed based on desulfonylation of 3 to the corresponding fluoresceins 4 through nucleophilic substitution, and this fluorescing process is quite specific toward O2-* over H2O2, t-BuOOH, NaOCl, 1O2, HO*, NO*, and ONOO-. Furthermore, effects of glutathione, cytochrome P450 reductase/NADPH, and diaphorase/NADH are relatively small on the fluorescing process of probe 3 with X = Y = F, which is useful to detect O2-* released from neutrophils stimulated by phorbol myristate acetate with satisfactory sensitivity.
Selective, Modular Probes for Thioredoxins Enabled by Rational Tuning of a Unique Disulfide Structure Motif
作者:Jan G. Felber、Lukas Zeisel、Lena Poczka、Karoline Scholzen、Sander Busker、Martin S. Maier、Ulrike Theisen、Christina Brandstädter、Katja Becker、Elias S. J. Arnér、Julia Thorn-Seshold、Oliver Thorn-Seshold
DOI:10.1021/jacs.1c03234
日期:2021.6.16
disulfide reduction trigger units designed for stability to monothiols. We integrated the motifs into modular series of fluorogenic probes that release and activate an arbitrary chemical cargo upon reduction, and compared their performance to that of the literature-known disulfides. The probes were comprehensively screened for biological stability and selectivity against a range of redox effector proteins
氧化还原酶的专门细胞网络协调控制代谢、蛋白质调节和氧化还原稳态的二硫醇/二硫化物交换反应。对于对氧化还原酶和效应蛋白(nM 到 μM 浓度)具有选择性的探针,它们还必须能够抵抗由约 非催化细胞单硫醇的 50 mM 背景。然而,还没有建立这样的选择性还原传感系统。在这里,我们使用合理的结构设计来独立改变二硫化物稳定性的热力学和动力学方面,创造了一系列不寻常的二硫化物还原触发单元,旨在稳定一硫醇。我们将这些基序集成到模块化系列的荧光探针中,这些探针在还原时释放和激活任意化学物质,并将它们的性能与文献中已知的二硫化物的性能进行了比较。针对一系列氧化还原效应蛋白和酶,针对生物稳定性和选择性对探针进行了全面筛选。这种设计过程提供了第一个二硫化物探针,它对单硫醇具有出色的稳定性,但对关键的氧化还原活性蛋白效应物硫氧还蛋白具有高选择性。我们预计这些新型二硫键的进一步应用将提供针对细胞硫氧还蛋白的独特探针
ANTIBODY CONJUGATES AND METHODS OF MAKING THE ANTIBODY CONJUGATES
申请人:Isis Innovation Limited
公开号:US20160361436A1
公开(公告)日:2016-12-15
Described herein are antibody conjugates and methods of making antibody conjugates.
本文描述了抗体偶联物和制备抗体偶联物的方法。
TETRAZINE-CONTAINING COMPOUNDS AND SYNTHETIC METHODS THEREOF
申请人:The Regents of the University of California
公开号:US20160223559A1
公开(公告)日:2016-08-04
Described herein are tetrazine derivatives and efficient synthetic methods of synthesis thereof using elimination-Heck cascade reaction. Provided herein is the synthesis of conjugated tetrazines from the tetrazine derivatives. Also provided herein are methods of use of the conjugated tetrazines as fluorogenic probes for live-cell imaging.
The family of dyes of the invention are fluoresceins and rhodols that are directly substituted on one or more aromatic carbons by fluorine. These fluorine-substituted fluorescent dyes possess greater photostability and have lower sensitivity to pH changes in the physiological range of 6-8 than do non-fluorinated dyes, exhibit less quenching when conjugated to a substance, and possess additional advantages. The dyes of the invention are useful as detectable tracers and for preparing conjugates of organic and inorganic substances.
PHOTOACTIVATABLE ANTIMICROBIAL AGENTS AND THERAPEUTIC AND DIAGNOSTIC METHODS OF USING SAME
申请人:Hasan Tayyaba
公开号:US20110112059A1
公开(公告)日:2011-05-12
The present invention provides photosensitizer compounds for use in detecting beta-lactamase activity. Methods and kits that utilize the photosensitizer compounds of the invention for the detection of, quantitation of, and classification or typing of microbial beta-lactamases.