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Gorenflos López, Jacob L.; Dornan, Gillian L.; Boback, Nico; Neuenschwander, Martin; Oder, Andreas; Kemnitz‐Hassanin, Kristin; Schmieder, Peter; Specker, Edgar; Asikoglu, Hatice Ceyda; Oberdanner, Christian; Seyffarth, Carola; von Kries, Jens Peter; Lauster, Daniel; Hinderlich, Stephan; Hackenberger, Christian P. R.

Small Molecules Targeting Human UDP‐GlcNAc 2‐Epimerase

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  • Medientyp: E-Artikel
  • Titel: Small Molecules Targeting Human UDP‐GlcNAc 2‐Epimerase
  • Beteiligte: Gorenflos López, Jacob L.; Dornan, Gillian L.; Boback, Nico; Neuenschwander, Martin; Oder, Andreas; Kemnitz‐Hassanin, Kristin; Schmieder, Peter; Specker, Edgar; Asikoglu, Hatice Ceyda; Oberdanner, Christian; Seyffarth, Carola; von Kries, Jens Peter; Lauster, Daniel; Hinderlich, Stephan; Hackenberger, Christian P. R.
  • Erschienen: Wiley, 2023
  • Erschienen in: ChemBioChem, 24 (2023) 24
  • Sprache: Englisch
  • DOI: 10.1002/cbic.202300555
  • ISSN: 1439-7633; 1439-4227
  • Schlagwörter: Organic Chemistry ; Molecular Biology ; Molecular Medicine ; Biochemistry
  • Entstehung:
  • Anmerkungen:
  • Beschreibung: AbstractUridine diphosphate N‐acetylglucosamine 2‐epimerase (GNE) is a key enzyme in the sialic acid biosynthesis pathway. Sialic acids are primarily terminal carbohydrates on glycans and play fundamental roles in health and disease. In search of effective GNE inhibitors not based on a carbohydrate scaffold, we performed a high‐throughput screening campaign of 68,640 drug‐like small molecules against recombinant GNE using a UDP detection assay. We validated nine of the primary actives with an orthogonal real‐time NMR assay and verified their IC50 values in the low micromolar to nanomolar range manually. Stability and solubility studies revealed three compounds for further evaluation. Thermal shift assays, analytical size exclusion, and interferometric scattering microscopy demonstrated that the GNE inhibitors acted on the oligomeric state of the protein. Finally, hydrogen‐deuterium exchange mass spectrometry (HDX‐MS) revealed which sections of GNE were shifted upon the addition of the inhibitors. In summary, we have identified three small molecules as GNE inhibitors with high potency in vitro, which serve as promising candidates to modulate sialic acid biosynthesis in more complex systems.