Open Access

Histone modifications in fatty acid synthase modulated by carbohydrate responsive element binding protein are associated with non‑alcoholic fatty liver disease

  • Authors:
    • Can Cai
    • Huihong Yu
    • Guangming Huang
    • Xuan Du
    • Xiaoqing Yu
    • Youping Zhou
    • Wei Shen
  • View Affiliations

  • Published online on: May 22, 2018     https://doi.org/10.3892/ijmm.2018.3702
  • Pages: 1215-1228
  • Copyright: © Cai et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Non‑alcoholic fatty liver disease (NAFLD) is a manifestation of metabolic syndrome in the liver and is closely associated with diabetes; however, its pathogenesis remains to be elucidated. Carbohydrate responsive element binding protein (ChREBP), the hub of glucolipid metabolism, regulates the induction of fatty acid synthase (FASN), the key enzyme of de novo lipogenesis, by directly binding to carbohydrate response element (ChoRE) in its promoter. Investigations of histone modifications on NAFLD remain in their infancy. In the present study, by using ChIP, the association between histone modifications and FASN transcription was investigated and histone modifications in FASN modulated by ChREBP were measured. It was demonstrated that ChREBP induced FASN ChREBP‑ChoRE binding to accelerate the expression of FASN, leading to hepatocellular steatosis by facilitating H3 and H4 acetylation, H3K4 trimethylation and the phosphorylation of H3S10, but inhibiting the trimethylation of H3K9 and H4K20 in FASN promoter regions of HepG2 and L02 cells. It was also found that ChREBP‑ChoRE binding of FASN relied on histone acetylation and that the transcriptional activity of ChREBP on FASN is required, based on the premise that histone acetylation causes conformational changes in FASN chromatin. This indicated histone acetylation as a crucial mechanism involved in the transcription of FASN modulated by ChREBP. Consequently, the present study provides further insight into the pathophysiology and a novel therapeutic potential of NAFLD based on epigenetic mechanisms.
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September-2018
Volume 42 Issue 3

Print ISSN: 1107-3756
Online ISSN:1791-244X

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Spandidos Publications style
Cai C, Yu H, Huang G, Du X, Yu X, Zhou Y and Shen W: Histone modifications in fatty acid synthase modulated by carbohydrate responsive element binding protein are associated with non‑alcoholic fatty liver disease. Int J Mol Med 42: 1215-1228, 2018.
APA
Cai, C., Yu, H., Huang, G., Du, X., Yu, X., Zhou, Y., & Shen, W. (2018). Histone modifications in fatty acid synthase modulated by carbohydrate responsive element binding protein are associated with non‑alcoholic fatty liver disease. International Journal of Molecular Medicine, 42, 1215-1228. https://doi.org/10.3892/ijmm.2018.3702
MLA
Cai, C., Yu, H., Huang, G., Du, X., Yu, X., Zhou, Y., Shen, W."Histone modifications in fatty acid synthase modulated by carbohydrate responsive element binding protein are associated with non‑alcoholic fatty liver disease". International Journal of Molecular Medicine 42.3 (2018): 1215-1228.
Chicago
Cai, C., Yu, H., Huang, G., Du, X., Yu, X., Zhou, Y., Shen, W."Histone modifications in fatty acid synthase modulated by carbohydrate responsive element binding protein are associated with non‑alcoholic fatty liver disease". International Journal of Molecular Medicine 42, no. 3 (2018): 1215-1228. https://doi.org/10.3892/ijmm.2018.3702