PMID- 32975614 OWN - NLM STAT- MEDLINE DCOM- 20210329 LR - 20240226 IS - 1420-9071 (Electronic) IS - 1420-682X (Linking) VI - 78 IP - 5 DP - 2021 Mar TI - TRAF6-mediated ubiquitination of MST1/STK4 attenuates the TLR4-NF-kappaB signaling pathway in macrophages. PG - 2315-2328 LID - 10.1007/s00018-020-03650-4 [doi] AB - Pattern-recognition receptors including Toll-like receptors (TLRs) recognize invading pathogens and trigger an immune response in mammals. Here we show that mammalian ste20-like kinase 1/serine/threonine kinase 4 (MST1/STK4) functions as a negative regulator of lipopolysaccharide (LPS)-induced activation of the TLR4-NF-kappaB signaling pathway associated with inflammation. Myeloid-specific genetic ablation of MST1/STK4 increased the susceptibility of mice to LPS-induced septic shock. Ablation of MST1/STK4 also enhanced NF-kappaB activation triggered by LPS in bone marrow-derived macrophages (BMDMs), leading to increased production of proinflammatory cytokines by these cells. Furthermore, MST1/STK4 inhibited TRAF6 autoubiquitination as well as TRAF6-mediated downstream signaling induced by LPS. In addition, we found that TRAF6 mediates the LPS-induced activation of MST1/STK4 by catalyzing its ubiquitination, resulting in negative feedback regulation by MST1/STK4 of the LPS-induced pathway leading to cytokine production in macrophages. Together, our findings suggest that MST1/STK4 functions as a negative modulator of the LPS-induced NF-kappaB signaling pathway during macrophage activation. FAU - Roh, Kyung-Hye AU - Roh KH AD - Department of Life Sciences, Korea University, Seoul, 02841, Korea. FAU - Lee, Yeojin AU - Lee Y AD - Department of Life Sciences, Korea University, Seoul, 02841, Korea. FAU - Yoon, Je-Hyun AU - Yoon JH AD - Department of Biochemistry and Molecular Biology, Medical University of South Carolina, Charleston, SC, 29425, USA. FAU - Lee, Danbi AU - Lee D AD - Department of Life Sciences, Korea University, Seoul, 02841, Korea. FAU - Kim, Eunju AU - Kim E AD - Department of Life Sciences, Korea University, Seoul, 02841, Korea. FAU - Park, Eunchong AU - Park E AD - Department of Life Sciences, Korea University, Seoul, 02841, Korea. FAU - Lee, In Young AU - Lee IY AD - Department of Life Sciences, Korea University, Seoul, 02841, Korea. FAU - Kim, Tae Sung AU - Kim TS AD - Department of Life Sciences, Korea University, Seoul, 02841, Korea. FAU - Song, Hyun Kyu AU - Song HK AD - Department of Life Sciences, Korea University, Seoul, 02841, Korea. FAU - Shin, Jaekyoon AU - Shin J AD - Department of Molecular Cell Biology, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon, 16419, Korea. FAU - Lim, Dae-Sik AU - Lim DS AD - Department of Biological Sciences, National Creative Research Initiatives Center, Biomedical Research Center, Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 305-701, Korea. FAU - Choi, Eui-Ju AU - Choi EJ AUID- ORCID: 0000-0002-3642-0432 AD - Department of Life Sciences, Korea University, Seoul, 02841, Korea. ejchoi@korea.ac.kr. LA - eng GR - 2016H1A2A1907478/Ministry of Science and ICT of Korea/ GR - NRF-2020R1A2C2011392/Ministry of Science and ICT of Korea/ PT - Journal Article DEP - 20200925 PL - Switzerland TA - Cell Mol Life Sci JT - Cellular and molecular life sciences : CMLS JID - 9705402 RN - 0 (Cytokines) RN - 0 (Lipopolysaccharides) RN - 0 (NF-kappa B) RN - 0 (Sequestosome-1 Protein) RN - 0 (Sqstm1 protein, mouse) RN - 0 (TNF Receptor-Associated Factor 6) RN - 0 (Tlr4 protein, mouse) RN - 0 (Toll-Like Receptor 4) RN - EC 2.7.1.- (Stk4 protein, mouse) RN - EC 2.7.11.1 (Protein Serine-Threonine Kinases) SB - IM MH - Animals MH - Cells, Cultured MH - Cytokines/blood/genetics/metabolism MH - HEK293 Cells MH - Humans MH - Lipopolysaccharides/pharmacology MH - Macrophage Activation/drug effects MH - Macrophages/cytology/drug effects/*metabolism MH - Mice, Inbred C57BL MH - Mice, Knockout MH - Mice, Transgenic MH - NF-kappa B/*metabolism MH - Protein Serine-Threonine Kinases/genetics/*metabolism MH - Sepsis/blood/genetics/metabolism MH - Sequestosome-1 Protein/genetics/metabolism MH - Signal Transduction/drug effects MH - Survival Analysis MH - TNF Receptor-Associated Factor 6/genetics/*metabolism MH - Toll-Like Receptor 4/genetics/*metabolism MH - Ubiquitination/drug effects MH - Mice OTO - NOTNLM OT - Lipopolysaccharides OT - MST1/STK4 OT - NF-kappaB OT - TRAF6 EDAT- 2020/09/26 06:00 MHDA- 2021/03/30 06:00 CRDT- 2020/09/25 12:15 PHST- 2020/05/19 00:00 [received] PHST- 2020/09/15 00:00 [accepted] PHST- 2020/08/24 00:00 [revised] PHST- 2020/09/26 06:00 [pubmed] PHST- 2021/03/30 06:00 [medline] PHST- 2020/09/25 12:15 [entrez] AID - 10.1007/s00018-020-03650-4 [pii] AID - 10.1007/s00018-020-03650-4 [doi] PST - ppublish SO - Cell Mol Life Sci. 2021 Mar;78(5):2315-2328. doi: 10.1007/s00018-020-03650-4. Epub 2020 Sep 25.