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Fluorescence-Quenched Substrates for Quantitative Live Cell Imaging of Glucocerebrosidase Activity.

著者 Ashmus RA , Shen DL , Vocadlo DJ
Methods Enzymol.2018 ; 598():199-215.
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Glucocerebrosidase (GCase) is a lysosomal glycoside hydrolase that cleaves the glycolipid glucosylceramide (GlcCer). Deficiencies of this enzyme lead to accumulation of GlcCer and the development of the lysosomal storage disease known as Gaucher's disease. Recently, loss-of-function mutations in the GBA1 gene that encodes GCase have been linked to Parkinson's disease. Currently pursued therapeutic strategies to increase GCase involve enzyme replacement therapy, chemical chaperone therapy, and GCase activators. A challenge associated with advancing such strategies is to efficiently monitor GCase activity within the lysosomes of live cells. In this chapter, we review the design and use of the fluorescent-quenched probe GBA1-FQ2 to quantitatively measure GCase activity in lysosomes of live cells.
PMID: 29306435 [PubMed - in process]
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