A Cleavable C<sub>2</sub>-Symmetric <i>trans</i>-Cyclooctene Enables Fast and Complete Bioorthogonal Disassembly of Molecular Probes
作者:Martin Wilkovitsch、Maximilian Haider、Barbara Sohr、Barbara Herrmann、Jenna Klubnick、Ralph Weissleder、Jonathan C. T. Carlson、Hannes Mikula
DOI:10.1021/jacs.0c07922
日期:2020.11.11
(C2TCO) that exhibits excellent biological stability and can be rapidly and completely cleaved with functionalized alkyl-, aryl-, and H-tetrazines, irrespective of click orientation. By incorporation of C2TCO into fluorescent molecular probes, we demonstrate highly efficient extracellular and intracellular bioorthogonal disassembly via omnidirectional tetrazine-triggered cleavage.
multicolor SMI of intracellularproteins is challenging because of high background signals and other limitations of current fluorescence labeling approaches. To achieve reproducible intracellular SMI, a labelingprobe ensuring both efficient membrane permeability and minimal non-specific binding to cell components is essential. We developed near-infrared fluorescent probes for proteinlabeling that specifically
[EN] CELL PERMEABLE, FLUORESCENT DYE<br/>[FR] COLORANT FLUORESCENT CAPABLE DE PÉNÉTRER DANS LES CELLULES
申请人:ECOLE POLYTECH
公开号:WO2013029650A1
公开(公告)日:2013-03-07
The invention pertains to a near-infrared fluorescent dye that is cell permeable and can be attached to selected proteins in living cells. The dye has the general formula (I) or its or its corresponding spirolactone (II) wherein Y is chosen from the group consisting of Si, Ge and Sn; R0 is -COO- or COOH; R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15 and R16 are substituents, including hydrogen, independently from each other. The dye (i) absorbs and emits light at wavelengths above 600 nm; (ii) possesses high photostability; (iii) has high extinction coefficients and high quantum yields; (iv) can be derivatized with different molecules; and (v) is membrane-permeable and shows mini¬ mal background binding to biomolecules and biomolecular structures.
Near-IR Fluorescent Tracer for Glucose-Uptake Monitoring in Live Cells
作者:Ala Jo、June Sung、Sanghee Lee、Hyunsung Nam、Hyo Won Lee、Jongmin Park、Hwan Myung Kim、Eunha Kim、Seung Bum Park
DOI:10.1021/acs.bioconjchem.8b00558
日期:2018.10.17
Fluorescent tracers for glucose-uptake monitoring could be used as chemical tools for diagnosis and for discovery of novel therapeutic agents via the development of phenotypic screening systems. Here we present a new near-infrared fluorescentglucose tracer, Glc-SiR-CO2H, for monitoring the cellular glucoseuptake. By conjugating glucosamine with two different silicon rhodamine fluorochromes, we found
Super-Resolution Imaging of the Golgi in Live Cells with a Bioorthogonal Ceramide Probe
作者:Roman S. Erdmann、Hideo Takakura、Alexander D. Thompson、Felix Rivera-Molina、Edward S. Allgeyer、Joerg Bewersdorf、Derek Toomre、Alanna Schepartz
DOI:10.1002/anie.201403349
日期:2014.9.15
and dynamics at super-resolution in livecells. The method is based on two novel reagents: a trans-cyclooctene-containing ceramide lipid (Cer-TCO) and a highly reactive, tetrazine-tagged near-IR dye (SiR-Tz). These reagents assemble via an extremely rapid "tetrazine-click" reaction into Cer-SiR, a highly photostable "vital dye" that enables prolonged live-cell imaging of the Golgi apparatus by 3D confocal
我们报告了一种基于脂质的策略,可在活细胞中以超分辨率可视化高尔基体结构和动力学。该方法基于两种新型试剂:含反式环辛烯的神经酰胺脂质 (Cer-TCO) 和高活性、四嗪标记的近红外染料 (SiR-Tz)。这些试剂通过极其快速的“四嗪-点击”反应组装成 Cer-SiR,这是一种高度耐光的“重要染料”,可以通过 3D 共聚焦和 STED 显微镜对高尔基体进行长时间的活细胞成像。Cer-SiR 在浓度高达 2 μM 时是无毒的,并且不会干扰高尔基体酶的移动性或货物从内质网通过高尔基体并到达质膜的运输。