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Fluorogenic label to quantify the cytosolic delivery of macromolecules
被引:20
|作者:
Chao, Tzu-Yuan
[1
]
Raines, Ronald T.
[1
,2
]
机构:
[1] Univ Wisconsin, Dept Biochem, Madison, WI 53706 USA
[2] Univ Wisconsin, Dept Chem, Madison, WI 53706 USA
关键词:
BETA-GALACTOSIDASE;
RIBONUCLEASE INHIBITOR;
FLOW-CYTOMETRY;
FLUORESCEIN;
VARIANTS;
PROTEINS;
DESIGN;
D O I:
10.1039/c3mb25552b
中图分类号:
Q5 [生物化学];
Q7 [分子生物学];
学科分类号:
071010 ;
081704 ;
摘要:
The delivery of a macromolecule to the cytosol of human cells is assessed by using a pendant di-O-glycosylated derivative of fluorescein. Its fluorescence is unmasked by Escherichia coli beta-galactosidase installed in the cytosol. Background is diminished by using RNAi to suppress the expression of GLB1, which encodes a lysosomal beta-galactosidase. This strategy was used to quantify the cytosolic entry of a highly cationic protein, ribonuclease A.
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页码:339 / 342
页数:4
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