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    • 8. 发明申请
    • GLYCOPROTEOMIC PROBES FOR FLUORESCENT IMAGING OF FUCOSYLATED GLYCANS IN VIVO
    • 血液中富含荧光成像的GLYCOPROTEOMIC PROBES
    • US20110257376A1
    • 2011-10-20
    • US13053192
    • 2011-03-21
    • Chi-Huey WongTsui-Ling HsuSarah R. HansonMasaaki Sawa
    • Chi-Huey WongTsui-Ling HsuSarah R. HansonMasaaki Sawa
    • C07K14/47C07H19/207
    • G01N33/582G01N1/30G01N2400/00
    • Methods are provided for labeling cellular glycans bearing azide groups via fluorescent labeling comprising Cu(I)-catalyzed [3+2] cycloaddition of a probe comprising alkynyl group. Generation of fluorescent probes from a nonfluorescent precursor, 4-ethynyl-N-ethyl-1,8-naphthalimide, by Cu(I)-catalyzed [3+2] cycloaddition of the alkyne group of the probe to an azido-modified sugar are provided. Incorporation of azido-containing fucose analog into glycoconjugates via the fucose salvage pathway are disclosed. Fluorescent visualization of fucosylated cells by flow cytometry of cells treated with 6-azidofucose labeled with click-activated fluorogenic probe or biotinylated alkyne is disclosed. Visualization of intracellular location of fucosylated glycoconjugates by fluorescence microscopy are disclosed.
    • 提供了通过含有包含炔基的探针的Cu(I)催化的[3 + 2]环加成的荧光标记来标记携带叠氮基的细胞聚糖的方法。 通过Cu(I)催化的[3 + 2]环加成的探针的炔基与叠氮改性的糖,从非荧光前体4-乙炔基-N-乙基-1,8-萘二甲酰亚胺生成荧光探针是 提供。 公开了通过岩藻糖补救途径将叠氮基岩藻糖类似物掺入糖缀合物。 公开了通过用用点击激活的荧光探针或生物素化的炔标记的6-叠氮基聚糖处理的细胞的流式细胞术的岩藻糖基化细胞的荧光可视化。 公开了通过荧光显微镜观察岩藻糖基化糖缀合物的细胞内位置。
    • 10. 发明授权
    • Alkynyl sugar analogs for the labeling and visualization of glycoconjugates in cells
    • 炔基糖类似物用于细胞中糖缀合物的标记和可视化
    • US07960139B2
    • 2011-06-14
    • US12079226
    • 2008-03-24
    • Masaaki SawaChi-Huey WongTsui-Ling HsuSarah Hanson
    • Masaaki SawaChi-Huey WongTsui-Ling HsuSarah Hanson
    • G01N33/53
    • G01N33/5005G01N33/5008G01N33/533G01N2400/00
    • The present disclosure relates to a method for metabolic oligosaccharide engineering that incorporates derivatized alkyne-bearing sugar analogs as “tags” into cellular glycoconjugates. The disclosed method incorporates alkynyl derivatized Fuc and alkynyl derivatized ManNAc sugars into a cellular glycoconjugate. A chemical probe comprising an azide group and a visual probe or a fluorogenic probe is used to label the alkyne-derivatized sugar-tagged glycoconjugate. In one aspect, the chemical probe binds covalently to the alkynyl group by Cu(I)-catalyzed [3+2] azide-alkyne cycloaddition and is visualized at the cell surface, intracellularly, or in a cellular extract. The labeled glycoconjugate is capable of detection by flow cytometry, SDS-PAGE, Western blot, ELISA or confocal microscopy, and mass spectrometry.
    • 本公开内容涉及将衍生的含炔烃类似物作为“标签”掺入细胞糖缀合物的代谢寡糖工程方法。 所公开的方法将炔基衍生化的Fuc和炔基衍生的ManNAc糖引入细胞糖缀合物中。 使用包含叠氮化物基团和视觉探针或荧光探针的化学探针来标记炔衍生的糖标记的糖缀合物。 在一个方面,化学探针通过Cu(I)催化的[3 + 2]叠氮炔环加成共价结合到炔基上,并且在细胞表面,细胞内或细胞提取物中可视化。 标记的糖缀合物能够通过流式细胞术,SDS-PAGE,Western印迹,ELISA或共聚焦显微镜和质谱检测。