A versatile precursor to synthesize SNAP-tag substrates is developed for specifically labeling cells to produce high resolution fluorescent images.
已开发出一种多功能的SNAP标签底物前体,用于特异性标记细胞,以产生高分辨率的荧光图像。
A novel <sup>18</sup>F-labeled clickable substrate for targeted imaging of SNAP-tag expressing cells by PET <i>in vivo</i>
作者:Dominic Alexej Depke、Christian Paul Konken、Lukas Rösner、Sven Hermann、Michael Schäfers、Andrea Rentmeister
DOI:10.1039/d1cc03871k
日期:——
specific targeting of cells for imaging in vitro and also in vivo. To this end, fluorescent SNAP substrates have been established and used in microscopy and fluorescence imaging while radioactive substrates for the highly sensitive and whole-body positron emission tomography (PET) have been lacking. Here, we show for the first time successful and high-contrast PET imaging of subcutaneous SNAP-tag expressing
使用自标记酶(如 SNAP-tag)进行生物正交共价标记具有很高的潜力,可以特异性靶向细胞进行体外和体内成像。为此,荧光 SNAP 底物已被建立并用于显微镜和荧光成像,而用于高灵敏度和全身正电子发射断层扫描 (PET) 的放射性底物一直缺乏。在这里,我们首次展示了通过生物正交共价靶向体内新型18 F 放射性配体对表达皮下 SNAP 标签的肿瘤异种移植物进行成功和高对比度的 PET 成像。
Development and applications of a near-infrared dye–benzylguanine conjugate to specifically label SNAP-tagged proteins
conjugation structures but exhibit tunable photophysical properties. N-NIR and S-NIR have large extinction coefficients over 100,000, and highfluorescencequantumyields. Although NIR absorption and emission of K-NIR are inferior to the former two, it emits at much longerwavelength region. And all the three dyes can easy pass through the cell membranes to obtain the high-resolution NIR fluorescent images. Further
[EN] DYE COMPOSITIONS, METHODS OF PREPARATION, CONJUGATES THEREOF, AND METHODS OF USE<br/>[FR] COMPOSITIONS DE COLORANT, PROCÉDÉS DE PRÉPARATION, CONJUGUÉS ASSOCIÉS, ET PROCÉDÉS D'UTILISATION
申请人:UNIV CORNELL
公开号:WO2013109859A1
公开(公告)日:2013-07-25
Dye compounds of the formula (1) wherein A is a protective agent group that has a characteristic of modifying the singlet-triplet occupancy of the shown cyanine moiety, and M is a reactive crosslinking group or a group that can be converted to a reactive crosslinking group. Methods for synthesizing the dye compounds and applications for their use are also described.
Photoproximity Profiling of Protein–Protein Interactions in Cells
作者:David C. McCutcheon、Gihoon Lee、Anthony Carlos、Jeffrey E. Montgomery、Raymond E. Moellering
DOI:10.1021/jacs.9b06528
日期:2020.1.8
We report a novel photoproximity protein interaction (PhotoPPI) profiling method to map protein-protein interactions in vitro and in live cells. This approach utilizes a bioorthogonal, multifunctional chemical probe that can be targeted to a geneticallyencoded protein of interest (POI) through a modular SNAP-Tag/benzylguanine covalent interaction. A first generation photoproximity probe, PP1, responds