O-GlycNacylation Remission Retards the Progression of Non-Alcoholic Fatty Liver Disease

Cells. 2022 Nov 16;11(22):3637. doi: 10.3390/cells11223637.

Abstract

Non-alcoholic fatty liver disease (NAFLD) is a metabolic disease spectrum associated with insulin resistance (IR), from non-alcoholic fatty liver (NAFL) to non-alcoholic steatohepatitis (NASH), cirrhosis, and hepatocellular carcinoma (HCC). O-GlcNAcylation is a posttranslational modification, regulated by O-GlcNAc transferase (OGT) and O-GlcNAcase (OGA). Abnormal O-GlcNAcylation plays a key role in IR, fat deposition, inflammatory injury, fibrosis, and tumorigenesis. However, the specific mechanisms and clinical treatments of O-GlcNAcylation and NAFLD are yet to be elucidated. The modification contributes to understanding the pathogenesis and development of NAFLD, thus clarifying the protective effect of O-GlcNAcylation inhibition on liver injury. In this review, the crucial role of O-GlcNAcylation in NAFLD (from NAFL to HCC) is discussed, and the effect of therapeutics on O-GlcNAcylation and its potential mechanisms on NAFLD have been highlighted. These inferences present novel insights into the pathogenesis and treatments of NAFLD.

Keywords: O-GlcNAcylation; cirrhosis; fibrosis; hepatocellular carcinoma; insulin resistance; non-alcoholic fatty liver disease; non-alcoholic steatohepatitis.

Publication types

  • Review
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Carcinoma, Hepatocellular* / complications
  • Humans
  • Insulin Resistance*
  • Liver Neoplasms* / complications
  • Non-alcoholic Fatty Liver Disease* / metabolism
  • Protein Processing, Post-Translational

Grants and funding

This work was supported by the National Natural Science Foundation of China [grant number No.82160170 and No.81860151]; the National Key R&D Program of China, Synthetic Biology Research [No.2019YFA0904500]; the Key R&D Program of Jiangxi Province [No. 20192BBG70027]; the National Clinical Research Center for Geriatrics—JiangXi branch center [No. 2021ZDG02001]; [No. 20212BAB216047 and No. 202004BCJL23049], and the National Natural Science Foundation of China [grant number No. 82100869].