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PKC alpha-LSD1-NF-kappa B-Signaling Cascade Is Crucial for Epigenetic Control of the Inflammatory Responseopen access

Authors
Kim, DonghaNam, Hye JinLee, WonhwaYim, Hwa YoungAhn, Jun-YeongPark, Se WonShin, Hi-Jai R.Yu, ReynoldWon, Kyoung-JaeBae, Jong-SupKim, Keun IlBaek, Sung Hee
Issue Date
Feb-2018
Publisher
CELL PRESS
Keywords
C/EBPδ; epigenetic regulation; Go6976; GSK-LSD1; inflammation; LSD1; NF-κB signaling; p65; PKCα; sepsis
Citation
MOLECULAR CELL, v.69, no.3, pp.398 - +
Journal Title
MOLECULAR CELL
Volume
69
Number
3
Start Page
398
End Page
+
URI
https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/4710
DOI
10.1016/j.molcel.2018.01.002
ISSN
1097-2765
Abstract
The inflammatory response mediated by nuclear factor kappa B (NF-kappa B) signaling is essential for host defense against pathogens. Although the regulatory mechanism of NF-kB signaling has been well studied, the molecular basis for epigenetic regulation of the inflammatory response is poorly understood. Here we identify a new signaling axis of PKC alpha-LSD1NF-kappa B, which is critical for activation and amplification of the inflammatory response. In response to excessive inflammatory stimuli, PKC alpha translocates to the nucleus and phosphorylates LSD1. LSD1 phosphorylation is required for p65 binding and facilitates p65 demethylation, leading to enhanced stability. In vivo genetic analysis using Lsd1(SA/SA) mice with ablation of LSD1 phosphorylation and chemical approaches in wild-type mice with inhibition of PKCa or LSD1 activity show attenuated sepsis-induced inflammatory lung injury and mortality. Together, we demonstrate that the PKC alpha-LSD1-NF-kappa B signaling cascade is crucial for epigenetic control of the inflammatory response, and targeting this signaling could be a powerful therapeutic strategy for systemic inflammatory diseases, including sepsis.
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