PMID- 30628485 OWN - NLM STAT- MEDLINE DCOM- 20191230 LR - 20200930 IS - 1522-1504 (Electronic) IS - 1040-0605 (Print) IS - 1040-0605 (Linking) VI - 316 IP - 3 DP - 2019 Mar 1 TI - Apoptosis signal-regulating kinase-1 promotes inflammasome priming in macrophages. PG - L418-L427 LID - 10.1152/ajplung.00199.2018 [doi] AB - We previously showed that mice deficient in apoptosis signal-regulating kinase-1 (ASK1) were partially protected against ventilator-induced lung injury. Because ASK1 can promote both cell death and inflammation, we hypothesized that ASK1 activation regulates inflammasome-mediated inflammation. Mice deficient in ASK1 expression (ASK1(-/-)) exhibited significantly less inflammation and lung injury (as measured by neutrophil infiltration, IL-6, and IL-1beta) in response to treatment with inhaled lipopolysaccharide (LPS) compared with wild-type (WT) mice. To determine whether this proinflammatory response was mediated by ASK1, we investigated inflammasome-mediated responses to LPS in primary macrophages and bone marrow-derived macrophages (BMDMs) from WT and ASK1(-/-) mice, as well as the mouse alveolar macrophage cell line MH-S. Cells were treated with LPS alone for priming or LPS followed by ATP for activation. When macrophages were stimulated with LPS followed by ATP to activate the inflammasome, we found a significant increase in secreted IL-1beta from WT cells compared with ASK1-deficient cells. LPS priming stimulated an increase in NOD-like receptor 3 (NLRP3) and pro-IL-1beta in WT BMDMs, but expression of NLRP3 was significantly decreased in ASK1(-/-) BMDMs. Subsequent ATP treatment stimulated an increase in cleaved caspase-1 and IL-1beta in WT BMDMs compared with ASK1(-/-) BMDMs. Similarly, treatment of MH-S cells with LPS + ATP caused an increase in both cleaved caspase-1 and IL-1beta that was diminished by the ASK-1 inhibitor NQDI1. These results demonstrate, for the first time, that ASK1 promotes inflammasome priming. FAU - Immanuel, Camille N AU - Immanuel CN AD - Division of Pediatric Critical Care, Department of Pediatrics, Children's Foundation Research Institute at Le Bonheur Children's Hospital, University of Tennessee Health Sciences , Memphis, Tennessee. AD - Department of Physiology, University of Kentucky , Lexington, Kentucky. FAU - Teng, Bin AU - Teng B AD - Department of Physiology, University of Tennessee Health Science Center , Memphis, Tennessee. FAU - Dong, Brittany AU - Dong B AD - Department of Physiology, University of Kentucky , Lexington, Kentucky. FAU - Gordon, Elizabeth M AU - Gordon EM AD - Department of Physiology, University of Kentucky , Lexington, Kentucky. FAU - Kennedy, Joseph A AU - Kennedy JA AD - Department of Physiology, University of Tennessee Health Science Center , Memphis, Tennessee. FAU - Luellen, Charlean AU - Luellen C AD - Department of Physiology, University of Tennessee Health Science Center , Memphis, Tennessee. FAU - Schwingshackl, Andreas AU - Schwingshackl A AD - Department of Pediatrics, Mattel Children's Hospital at the University of California , Los Angeles, California. FAU - Cormier, Stephania A AU - Cormier SA AD - Department of Biological Sciences, Louisiana State University , Baton Rouge, Louisiana. FAU - Fitzpatrick, Elizabeth A AU - Fitzpatrick EA AD - Department of Microbiology, Immunology, and Biochemistry, University of Tennessee Health Science Center , Memphis, Tennessee. FAU - Waters, Christopher M AU - Waters CM AD - Department of Physiology, University of Kentucky , Lexington, Kentucky. LA - eng GR - K08 HL118118/HL/NHLBI NIH HHS/United States GR - R01 AI090059/AI/NIAID NIH HHS/United States GR - P42 ES013648/ES/NIEHS NIH HHS/United States GR - R01 HL131526/HL/NHLBI NIH HHS/United States GR - R01 HL123540/HL/NHLBI NIH HHS/United States GR - R01 ES015050/ES/NIEHS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20190110 PL - United States TA - Am J Physiol Lung Cell Mol Physiol JT - American journal of physiology. Lung cellular and molecular physiology JID - 100901229 RN - 0 (Carrier Proteins) RN - 0 (Inflammasomes) RN - 0 (Lipopolysaccharides) RN - EC 2.7.11.25 (MAP Kinase Kinase Kinase 5) RN - EC 2.7.11.25 (Map3k5 protein, mouse) SB - IM MH - Animals MH - Apoptosis/*drug effects MH - Carrier Proteins/metabolism MH - Cell Line MH - Inflammasomes/*drug effects/metabolism MH - Inflammation/drug therapy/metabolism MH - Lipopolysaccharides/pharmacology MH - MAP Kinase Kinase Kinase 5/drug effects/*metabolism MH - Macrophages/*drug effects/metabolism MH - Mice, Inbred C57BL MH - Mice, Knockout MH - Neutrophil Infiltration/drug effects MH - Signal Transduction/drug effects PMC - PMC6459294 OTO - NOTNLM OT - LPS priming OT - acute respiratory distress syndrome OT - apoptosis signal regulating kinase-1 OT - lung inflammation COIS- No conflicts of interest, financial or otherwise, are declared by the authors. EDAT- 2019/01/11 06:00 MHDA- 2019/12/31 06:00 PMCR- 2020/03/01 CRDT- 2019/01/11 06:00 PHST- 2019/01/11 06:00 [pubmed] PHST- 2019/12/31 06:00 [medline] PHST- 2019/01/11 06:00 [entrez] PHST- 2020/03/01 00:00 [pmc-release] AID - L-00199-2018 [pii] AID - 10.1152/ajplung.00199.2018 [doi] PST - ppublish SO - Am J Physiol Lung Cell Mol Physiol. 2019 Mar 1;316(3):L418-L427. doi: 10.1152/ajplung.00199.2018. Epub 2019 Jan 10.