Targeted Protein O-GlcNAcylation Using Bifunctional Small Molecules

Bowen Ma, Khadija Shahed Khan, Tongyang Xu, Josefina Xeque Amada, Zhihao Guo, Yunpeng Huang, Yu Yan, Henry Lam, Alfred Sze Lok Cheng, Billy Wai Lung Ng*

*Corresponding author for this work

Research output: Contribution to journalJournal Articlepeer-review

18 Citations (Scopus)

Abstract

Protein O-linked β-N-acetylglucosamine modification (O-GlcNAcylation) plays a crucial role in regulating essential cellular processes. The disruption of the homeostasis of O-GlcNAcylation has been linked to various human diseases, including cancer, diabetes, and neurodegeneration. However, there are limited chemical tools for protein- and site-specific O-GlcNAc modification, rendering the precise study of the O-GlcNAcylation challenging. To address this, we have developed heterobifunctional small molecules, named O-GlcNAcylation TArgeting Chimeras (OGTACs), which enable protein-specific O-GlcNAcylation in living cells. OGTACs promote O-GlcNAcylation of proteins such as BRD4, CK2α, and EZH2 in cellulo by recruiting FKBP12F36V-fused O-GlcNAc transferase (OGT), with temporal, magnitude, and reversible control. Overall, the OGTACs represent a promising approach for inducing protein-specific O-GlcNAcylation, thus enabling functional dissection and offering new directions for O-GlcNAc-targeting therapeutic development.

Original languageEnglish
Pages (from-to)9779-9789
Number of pages11
JournalJournal of the American Chemical Society
Volume146
Issue number14
DOIs
Publication statusPublished - 10 Apr 2024

Bibliographical note

Publisher Copyright:
© 2024 The Authors. Published by American Chemical Society.

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