BMB Reports

Korean Society for Biochemistry and Molecular Biology (생화학분자생물학회)
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LSD1-S112A exacerbates the pathogenesis of CSE/LPS-induced chronic obstructive pulmonary disease in mice

  • Jeong, Jiyeong (Research Institute of Women's Health, Sookmyung Women's University) ;
  • Oh, Chaeyoon (Department of Biological Sciences, Cellular Heterogeneity Research Center, Sookmyung Women's University) ;
  • Kim, Jiwon (Department of Biological Sciences, Cellular Heterogeneity Research Center, Sookmyung Women's University) ;
  • Yoo, Chul-Gyu (Department of Internal Medicine, Seoul National University College of Medicine) ;
  • Kim, Keun Il (Research Institute of Women's Health, Sookmyung Women's University)
  • Received : 2021.03.04
  • Accepted : 2021.05.25
  • Published : 2021.10.31
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Abstract

Lysine-specific demethylase 1 (LSD1) is an epigenetic regulator that modulates the chromatin status, contributing to gene activation or repression. The post-translational modification of LSD1 is critical for the regulation of many of its biological processes. Phosphorylation of serine 112 of LSD1 by protein kinase C alpha (PKCα) is crucial for regulating inflammation, but its physiological significance is not fully understood. This study aimed to investigate the role of Lsd1-S112A, a phosphorylation defective mutant, in the cigarette smoke extract/LPS-induced chronic obstructive pulmonary disease (COPD) model using Lsd1SA/SA mice and to explore the potential mechanism underpinning the development of COPD. We found that Lsd1SA/SA mice exhibited increased susceptibility to CSE/LPS-induced COPD, including high inflammatory cell influx into the bronchoalveolar lavage fluid and airspace enlargement. Additionally, the high gene expression associated with the inflammatory response and oxidative stress was observed in cells and mice containing Lsd1-S112A. Similar results were obtained from the mouse embryonic fibroblasts exposed to a PKCα inhibitor, Go6976. Thus, the lack of LSD1 phosphorylation exacerbates CSE/LPS-induced COPD by elevating inflammation and oxidative stress.

Keywords

Acknowledgement

This work was supported by Basic Science Research Program (NRF-2018R1A2B6004112) to K.I.K. from the National Research Foundation of Korea (NRF), and by the Center for Women In Science, Engineering and Technology (WISET) Grant to J.J. from the Program for Returners into R&D, funded by the Ministry of Science and ICT (MSIT).

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