Chemoproteomic and Transcriptomic Analysis Reveals that O‐GlcNAc Regulates Mouse Embryonic Stem Cell Fate through the Pluripotency Network

Author:

Hao Yi1,Li Xiang1,Qin Ke1,Shi Yujie1,He Yanwen1,Zhang Che1,Cheng Bo1,Zhang Xiwen1,Hu Guangyu1,Liang Shuyu1,Tang Qi1,Chen Xing1ORCID

Affiliation:

1. College of Chemistry and Molecular Engineering Beijing National Laboratory for Molecular Sciences Peking-Tsinghua Center for Life Sciences Synthetic and Functional Biomolecules Center Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education Peking University Beijing 100871 China

Abstract

AbstractSelf‐renewal and differentiation of embryonic stem cells (ESCs) are influenced by protein O‐linked β‐N‐acetylglucosamine (O‐GlcNAc) modification, but the underlying mechanism remains incompletely understood. Herein, we report the identification of 979 O‐GlcNAcylated proteins and 1340 modification sites in mouse ESCs (mESCs) by using a chemoproteomics method. In addition to OCT4 and SOX2, the third core pluripotency transcription factor (PTF) NANOG was found to be modified and functionally regulated by O‐GlcNAc. Upon differentiation along the neuronal lineage, the O‐GlcNAc stoichiometry at 123 sites of 83 proteins—several of which were PTFs—was found to decline. Transcriptomic profiling reveals 2456 differentially expressed genes responsive to OGT inhibition during differentiation, of which 901 are target genes of core PTFs. By acting on the core PTF network, suppression of O‐GlcNAcylation upregulates neuron‐related genes, thus contributing to mESC fate determination.

Funder

National Natural Science Foundation of China

Publisher

Wiley

Subject

General Medicine

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