PMID- 36334381 OWN - NLM STAT- MEDLINE DCOM- 20221213 LR - 20230322 IS - 2213-2317 (Electronic) IS - 2213-2317 (Linking) VI - 58 DP - 2022 Dec TI - Macrophage Sprouty4 deficiency diminishes sepsis-induced acute lung injury in mice. PG - 102513 LID - S2213-2317(22)00285-3 [pii] LID - 10.1016/j.redox.2022.102513 [doi] LID - 102513 AB - OBJECTIVE: Inflammation and oxidative stress play critical roles in sepsis-induced acute lung injury (ALI). Sprout4 (Spry4) is involved in regulating inflammation and tissue injury; however, its role and mechanism in sepsis-induced ALI remain elusive. METHODS: Macrophage-specific Spry4 knockout (Spry4(MKO)), transgenic (Spry4(MTG)) mice and matched control littermates were generated and exposed to cecum ligation and puncture (CLP) surgery to establish bacterial sepsis-induced ALI. Bone marrow-derived macrophages (BMDMs) from Spry4(MKO) or Spry4(MTG) mice were isolated and subjected to lipopolysaccharide (LPS) stimulation to further validate the role of Spry4 in vitro. To verify the necessity of AMP-activated protein kinase (AMPK), Spry4 and AMPK double knockout mice and compound C were used in vivo and in vitro. BMDMs were treated with STO-609 to inhibit calcium/calmodulin-dependent protein kinase kinase 2 (CaMKK2). RESULTS: We found that macrophage Spry4 was increased in CLP mice and positively correlated with sepsis-induced ALI. Macrophage Spry4 deficiency prevented, while macrophage Spry4 overexpression exacerbated sepsis-induced inflammation, oxidative stress and ALI in mice and BMDMs. Mechanistic studies revealed that macrophage Spry4 deficiency alleviated sepsis-induced ALI through activating CaMKK2/AMPK pathway. CONCLUSION: Our study identify macrophage Spry4 as a promising predictive and therapeutic target of sepsis-induced ALI. CI - Copyright (c) 2022 The Authors. Published by Elsevier B.V. All rights reserved. FAU - Chen, Rong AU - Chen R AD - Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, 430060, China. FAU - Cao, Chen AU - Cao C AD - Medical Center, Renmin Hospital of Wuhan University, Wuhan, 430060, China. FAU - Liu, Huimin AU - Liu H AD - Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, 430060, China. FAU - Jiang, Wanli AU - Jiang W AD - Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, 430060, China. FAU - Pan, Rui AU - Pan R AD - Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, 430060, China. FAU - He, He AU - He H AD - Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, 430060, China. FAU - Ding, Ke AU - Ding K AD - Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, 430060, China. FAU - Meng, Qingtao AU - Meng Q AD - Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, 430060, China. Electronic address: mengqingtao2018@126.com. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20221022 PL - Netherlands TA - Redox Biol JT - Redox biology JID - 101605639 RN - EC 2.7.11.31 (AMP-Activated Protein Kinases) RN - 0 (Lipopolysaccharides) RN - 0 (Spry4 protein, mouse) RN - 0 (Nerve Tissue Proteins) SB - IM EIN - Redox Biol. 2023 Jun;62:102667. PMID: 36948902 MH - Animals MH - Mice MH - *Acute Lung Injury/genetics/chemically induced MH - AMP-Activated Protein Kinases MH - Inflammation MH - Lipopolysaccharides/adverse effects MH - Lung/metabolism MH - *Macrophages/metabolism MH - Mice, Inbred C57BL MH - Mice, Knockout MH - *Sepsis/complications/genetics MH - *Nerve Tissue Proteins/genetics PMC - PMC9637958 OTO - NOTNLM OT - AMPK OT - Acute lung injury OT - Inflammation OT - Oxidative stress OT - Sprouty4 COIS- Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2022/11/06 06:00 MHDA- 2022/12/15 06:00 PMCR- 2022/10/22 CRDT- 2022/11/05 19:11 PHST- 2022/09/12 00:00 [received] PHST- 2022/10/10 00:00 [revised] PHST- 2022/10/15 00:00 [accepted] PHST- 2022/11/06 06:00 [pubmed] PHST- 2022/12/15 06:00 [medline] PHST- 2022/11/05 19:11 [entrez] PHST- 2022/10/22 00:00 [pmc-release] AID - S2213-2317(22)00285-3 [pii] AID - 102513 [pii] AID - 10.1016/j.redox.2022.102513 [doi] PST - ppublish SO - Redox Biol. 2022 Dec;58:102513. doi: 10.1016/j.redox.2022.102513. Epub 2022 Oct 22.