A Fluorescence Polarization Activity-Based Protein Profiling Assay in the Discovery of Potent, Selective Inhibitors for Human Nonlysosomal Glucosylceramidase

Daniël Lahav, Bing Liu, Richard J B H N van den Berg, Adrianus M C H van den Nieuwendijk, Tom Wennekes, Amar B T Ghisaidoobe, Imogen Breen, Maria Joao Ferraz, Chi-Lin Kuo, Liang Wu, Paul P Geurink, Huib Ovaa, Gijsbert A van der Marel, Mario van der Stelt, Rolf G Boot, Gideon J Davies, Johannes M F G Aerts, Herman S. Overkleeft

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Human nonlysosomal glucosylceramidase (GBA2) is one of several enzymes that controls levels of glycolipids and whose activity is linked to several human disease states. There is a major need to design or discover selective GBA2 inhibitors both as chemical tools and as potential therapeutic agents. Here, we describe the development of a fluorescence polarization activity-based protein profiling (FluoPol-ABPP) assay for the rapid identification, from a 350+ library of iminosugars, of GBA2 inhibitors. A focused library is generated based on leads from the FluoPol-ABPP screen and assessed on GBA2 selectivity offset against the other glucosylceramide metabolizing enzymes, glucosylceramide synthase (GCS), lysosomal glucosylceramidase (GBA), and the cytosolic retaining β-glucosidase, GBA3. Our work, yielding potent and selective GBA2 inhibitors, also provides a roadmap for the development of high-throughput assays for identifying retaining glycosidase inhibitors by FluoPol-ABPP on cell extracts containing recombinant, overexpressed glycosidase as the easily accessible enzyme source.

Original languageEnglish
Pages (from-to)14192-14197
Number of pages6
JournalJournal of the American Chemical Society
Volume139
Issue number40
DOIs
Publication statusPublished - 2017

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