2024
Positive selection CRISPR screens reveal a druggable pocket in an oligosaccharyltransferase required for inflammatory signaling to NF-κB
Lampson B, Ramίrez A, Baro M, He L, Hegde M, Koduri V, Pfaff J, Hanna R, Kowal J, Shirole N, He Y, Doench J, Contessa J, Locher K, Kaelin W. Positive selection CRISPR screens reveal a druggable pocket in an oligosaccharyltransferase required for inflammatory signaling to NF-κB. Cell 2024, 187: 2209-2223.e16. PMID: 38670073, PMCID: PMC11149550, DOI: 10.1016/j.cell.2024.03.022.Peer-Reviewed Original ResearchConceptsWhole-genome CRISPR-Cas9 screenCRISPR-Cas9 screensCryoelectron microscopy studiesCell surface localizationLipopolysaccharide receptor Toll-like receptor 4OST complexToll-like receptor 4CRISPR screensNF-kBCatalytic subunitN-glycosylationActivate NF-kBBase editorsUncompetitive inhibition mechanismNGI-1Molecular mechanismsCatalytic siteLPS-treated cellsOligosaccharyltransferaseDruggable pocketSTT3AReceptor Toll-like receptor 4Drug mechanism of actionStructural studiesInflammatory signaling
2019
Selective inhibition of N-linked glycosylation impairs receptor tyrosine kinase processing
Klaver E, Zhao P, May M, Flanagan-Steet H, Freeze HH, Gilmore R, Wells L, Contessa J, Steet R. Selective inhibition of N-linked glycosylation impairs receptor tyrosine kinase processing. Disease Models & Mechanisms 2019, 12: dmm039602. PMID: 31101650, PMCID: PMC6602306, DOI: 10.1242/dmm.039602.Peer-Reviewed Original ResearchConceptsNull cellsReceptor processingEndoplasmic reticulum localizationGlycan site occupancyInsulin-like growth factor 1 receptorReceptor tyrosine kinasesGrowth factor 1 receptorFactor 1 receptorCell surface glycoproteinMutant cellsNGI-1Catalytic subunitReceptor kinaseGlycosylation statusReduced abundanceTyrosine kinaseGlycan occupancyTyrosine receptor kinaseSurface localizationInsulin receptorAbnormal glycosylationProteolytic processingFunctional consequencesCell surfaceGlycosylation