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Inhibition of LSD1 phosphorylation alleviates colitis symptoms induced by dextran sulfate sodium

  • Oh, Chaeyoon (Department of Biological Sciences, Cellular Heterogeneity Research Center, Sookmyung Women's University) ;
  • Jeong, Jiyeong (Research Institute of Women's Health, Sookmyung Women's University) ;
  • Oh, Se Kyu (Department of Biological Sciences, Creative Research Initiative Center for Chromatin Dynamics, Seoul National University) ;
  • Baek, Sung Hee (Department of Biological Sciences, Creative Research Initiative Center for Chromatin Dynamics, Seoul National University) ;
  • Kim, Keun Il (Department of Biological Sciences, Cellular Heterogeneity Research Center, Sookmyung Women's University)
  • Received : 2019.11.29
  • Accepted : 2020.01.16
  • Published : 2020.07.31

Abstract

Inflammatory Bowel Disease is caused by an acute or chronic dysfunction of the mucosal inflammatory system in the intestinal tract. In line with the results of our previous study, wherein we found that the PKCα-LSD1-NF-κB signaling plays a critical role in the prolonged activation of the inflammatory response, we aimed to investigate the effect of signaling on colitis in the present study. Lsd1 S112A knock-in (Lsd1SA/SA) mice, harboring a deficiency in phosphorylation by PKCα, exhibited less severe colitis symptoms and a relatively intact colonic epithelial lining in dextran sulfate sodium (DSS)-induced colitis models. Additionally, a reduction in pro-inflammatory gene expression and immune cell recruitment into damaged colon tissues in Lsd1SA/SA mice was observed upon DSS administration. Furthermore, LSD1 inhibition alleviated colitis symptoms and reduced colonic inflammatory responses. Both LSD1 phosphorylation and its activity jointly play a role in the progression of DSS-induced colitis. Therefore, the inhibition of LSD1 activity could potentially protect against the colonic inflammatory response.

Keywords

References

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