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    • 1. 发明授权
    • Transglycosylation reactions employing .beta.-galactosidase
    • 使用β-半乳糖苷酶的转糖基化反应
    • US5876981A
    • 1999-03-02
    • US733232
    • 1996-10-17
    • Chi-Huey WongTeiji Kimura
    • Chi-Huey WongTeiji Kimura
    • C12P19/14C12P19/26C12N9/38C12P19/04C12P19/18
    • C12P19/26C12P19/14
    • .beta.-Galactosides are synthesized using a transglycosylation reaction catalyzed by .beta.-galactosidase. The reaction employs a carbohydrate donor having a glycosidic leaving group attached to its anomeric carbon and an oxo group attached to the C-6 carbon. Strong leaving groups are preferred over weak leaving groups. The method can be carried out in aqueous solution without organic solvents to give the transglycosylation product in high yields and high regioselectivity. The synthesis of lactosamine using this methodology with galactose oxidase (GO) and .beta.-galactosidase has been accomplished. (FIG. 3). The methodology affords simple reaction conditions and minimal purification steps. In addition, the intermediate substrates maintain high stability, the process affords high yields and the enzymes and reagents employed are commercially available with high stability and low costs.
    • β-半乳糖苷是使用由β-半乳糖苷酶催化的转糖基化反应合成的。 该反应采用具有与其端基异构碳连接的糖苷离去基团和与C-6碳连接的氧代基团的碳水化合物供体。 强离去基团优于弱离去基团。 该方法可以在没有有机溶剂的水溶液中进行,以高收率和高区域选择性得到转糖基化产物。 已经完成了使用该方法与半乳糖氧化酶(GO)和β-半乳糖苷酶合成乳糖胺。 (图3)。 该方法提供简单的反应条件和最小的纯化步骤。 此外,中间基材保持高稳定性,该方法提供高产率,所用的酶和试剂可以高稳定性和低成本商购。
    • 7. 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。
    • 9. 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。
    • 10. 发明授权
    • Compositions and methods for treating psoriasis by Ganoderma lucidum (Reishi) polysaccharides
    • 灵芝多糖治疗牛皮癣的组合物和方法
    • US07947283B2
    • 2011-05-24
    • US12231112
    • 2008-08-29
    • Tseng-Rong TuChia-Feng LiSung-Hsieh SuChi-Huey WongEugene Fan
    • Tseng-Rong TuChia-Feng LiSung-Hsieh SuChi-Huey WongEugene Fan
    • A01N65/00A61K36/074
    • A61K36/074Y10S514/863
    • A method for treating psoriasis by providing a pharmaceutical composition containing at least Ganoderma lucidum extract and administering a therapeutically effective amount of the composition to a patient in need thereof. Also disclosed is a method for treating psoriasis by first purifying Ganoderma lucidum extract into at least one fraction, then providing a pharmaceutical composition comprising at least one of the Ganoderma lucidum fractions, and administering a therapeutically effective amount of the composition to a patient in need thereof. A method for alleviating symptoms of psoriasis is disclosed. The symptoms of psoriasis are alleviated by providing a pharmaceutical composition containing at least Ganoderma lucidum extract and administering an amount of the composition effective to increase at least one of an IL-10 and IL-1Ra expression, whereby the symptoms of psoriasis are ameliorated.
    • 提供一种治疗牛皮癣的方法,提供至少含有灵芝提取物的药物组合物,并向有需要的患者施用治疗有效量的组合物。 还公开了一种治疗牛皮癣的方法,首先将灵芝提取物纯化至少一个级分,然后提供包含至少一种灵芝级分的药物组合物,并向有需要的患者施用治疗有效量的组合物 。 公开了减轻牛皮癣症状的方法。 通过提供至少含有灵芝提取物的药物组合物来减轻牛皮癣的症状,并施用一定量的有效增加IL-10和IL-1Ra表达中的至少一种的组合物,从而改善牛皮癣的症状。