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    • 6. 发明授权
    • Long wavelength lipophilic fluorogenic glycosidase substrates
    • 长波长磷酸荧光蛋白酶底物
    • US5242805A
    • 1993-09-07
    • US749255
    • 1991-08-23
    • John J. NalewayYu-zhong ZhangRichard P. Haugland
    • John J. NalewayYu-zhong ZhangRichard P. Haugland
    • C07H17/00C12Q1/34
    • C12Q1/34C07H17/00C12Q2334/00G01N2333/924
    • The claimed invention relates to a substrate for evaluating glycosidic enzymes comprising a resorufin derivative of the general formula: ##STR1## wherein Gly is a carbohydrate bonded to resorufin by a glycosidic linkage; where at least one of substituents R.sub.1, R.sub.2, R.sub.4, R.sub.6, R.sub.8, and R.sub.9 is a lipophilic residue of the formula --L(CH.sub.2).sub.n CH.sub.3, where n is greater than 3 and less than 22, and where L is a methylene --CH.sub.2 --, an amide --NHCO--, a sulfonamide --NHSO.sub.2 --, a carboxamide --CONH--, a carboxylate ester --COO--, a urethane --NHCOO--, a urea --NHCONH--, or a thiourea --NHCSNH--; andwhere the remainder of substituents R.sub.1, R.sub.2, R.sub.4, R.sub.6, R.sub.8, and R.sub.9, which may be the same or different, are hydrogen, halogen, or other lipophilic residues, which may be the same or different, containing from about 1 to about 22 carbon atoms of the formula --L'(CH.sub.2).sub.m CH.sub.3, where m is less than 22, and where L' is a methylene --CH.sub.2 --, an amide --NHCO--, a sulfonamide --NHSO.sub.2 --, a carboxamide --CONH--, a carboxylate ester --COO--, a urethane --NHCOO--, a urea --NHCONH--, or a thiourea --NHCSNH--.A preferred embodiment of the invention is a non-fluorescent substrate specifically hydrolyzable by a glycosidase inside a cell to yield, after greater than about 2 minutes, an orange to red fluorescent detection product which is retained inside a viable cell more than about 2 hours at greater than about 15.degree. C. and which is non-toxic to the cell. The substrates are used for evaluating a glycosidic enzyme in living plant or animal cells whether the enzyme is present endogenously; present as a result of manipulation of the cell's genome, or added to the cell exogenously, such as by covalently binding the enzyme to a protein to form an enzyme-protein complex that enters the cell.
    • 所要求保护的发明涉及用于评估糖苷酶的底物,其包含通式如下的再生烯衍生物:其中Gly是通过糖苷键键合至残留的碳水化合物; 其中取代基R 1,R 2,R 4,R 6,R 8和R 9中的至少一个是式-L(CH 2)n CH 3的亲脂性残基,其中n大于3且小于22,并且其中L是亚甲基 - CH 2 - ,酰胺-NHCO-,磺酰胺-NHSO 2 - ,酰胺-CONH-,羧酸酯-COO-,氨基甲酸酯-NHCOO-,脲-NHCONH-或硫脲-NHCSNH-; 并且其中可以相同或不同的取代基R 1,R 2,R 4,R 6,R 8和R 9的其余部分是氢,卤素或可以相同或不同的其它亲脂性残基,其含有约1至 约22个碳原子的式-L'(CH 2)m CH 3,其中m小于22,其中L'是亚甲基-CH 2 - ,酰胺-NHCO-,磺酰胺-NHSO 2 - ,甲酰胺-CONH- ,羧酸酯-COO-,氨基甲酸酯-NHCOO-,脲-NHCONH-或硫脲-NHCSNH-。 本发明的优选实施方案是特异性可由细胞内的糖苷酶水解的非荧光底物,大于约2分钟后,产生橙色至红色荧光检测产物,其在活细胞内保留超过约2小时 大于约15℃,对细胞无毒性。 底物用于评价活体植物或动物细胞中的糖苷酶,无论酶是否内源性存在; 作为细胞基因组的操作或外源性加入到细胞中的结果,例如通过将酶与蛋白质共价结合以形成进入细胞的酶 - 蛋白质复合物。