Knockdown of angiopoietin-like 4 suppresses sepsis-induced acute lung injury by blocking the NF-κB pathway activation and hindering macrophage M1 polarization and pyroptosis
Copyright © 2023 Elsevier Ltd. All rights reserved..
OBJECTIVE: Sepsis-induced acute lung injury (ALI) is a life-threatening disease. Macrophage pyroptosis has been reported to exert function in ALI. We aimed to investigate the mechanisms of ANGPTL4-mediated cell pyroptosis in sepsis-induced ALI, thus providing new insights into the pathogenesis and prevention and treatment measures of sepsis-induced ALI.
METHODS: In vivo animal models and in vitro cell models were established by cecal ligation and puncture (CLP) method and lipopolysaccharide-induced macrophages RAW264.7. ANGPTL4 was silenced in CLP mice or macrophages, followed by the determination of ANGPTL4 expression in bronchoalveolar lavage fluid (BALF) or macrophages. Lung histopathology was observed by H&E staining, with pathological injury scores evaluated and lung wet and dry weight ratio recorded. M1/M2 macrophage marker levels (iNOS/CD86/Arg1), inflammatory factor (TNF-α/IL-6/IL-1β/iNOS) expression in BALF, cell death and pyroptosis, NLRP3 inflammasome, cell pyroptosis-related protein (NLRP3/Cleaved-caspase-1/caspase-1/GSDMD-N) levels, NF-κB pathway activation were assessed by RT-qPCR/ELISA/flow cytometry/Western blot, respectively.
RESULTS: ANGPTL4 was highly expressed in mice with sepsis-induced ALI, and ANGPTL4 silencing ameliorated sepsis-induced ALI in mice. In vivo, ANGPTL4 silencing repressed M1 macrophage polarization and macrophage pyroptosis in mice with sepsis-induced ALI. In vitro, ANGPTL4 knockout impeded LPS-induced activation and pyroptosis of M1 macrophages and hindered LPS-induced activation of the NF-κB pathway in macrophages.
CONCLUSION: Knockdown of ANGPTL4 blocks the NF-κB pathway activation, hinders macrophage M1 polarization and pyroptosis, thereby suppressing sepsis-induced ALI.
Medienart: |
E-Artikel |
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Erscheinungsjahr: |
2024 2023 |
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Erschienen: |
2024 |
Enthalten in: |
Zur Gesamtaufnahme - volume:94 |
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Enthalten in: |
Toxicology in vitro : an international journal published in association with BIBRA - 94(2023) vom: 16. Feb., Seite 105709 |
Sprache: |
Englisch |
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Beteiligte Personen: |
Sun, Baisheng [VerfasserIn] |
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Links: |
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Anmerkungen: |
Date Completed 15.12.2023 Date Revised 15.12.2023 published: Print-Electronic Citation Status MEDLINE |
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doi: |
10.1016/j.tiv.2023.105709 |
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funding: |
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Förderinstitution / Projekttitel: |
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PPN (Katalog-ID): |
NLM36313798X |
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245 | 1 | 0 | |a Knockdown of angiopoietin-like 4 suppresses sepsis-induced acute lung injury by blocking the NF-κB pathway activation and hindering macrophage M1 polarization and pyroptosis |
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500 | |a published: Print-Electronic | ||
500 | |a Citation Status MEDLINE | ||
520 | |a Copyright © 2023 Elsevier Ltd. All rights reserved. | ||
520 | |a OBJECTIVE: Sepsis-induced acute lung injury (ALI) is a life-threatening disease. Macrophage pyroptosis has been reported to exert function in ALI. We aimed to investigate the mechanisms of ANGPTL4-mediated cell pyroptosis in sepsis-induced ALI, thus providing new insights into the pathogenesis and prevention and treatment measures of sepsis-induced ALI | ||
520 | |a METHODS: In vivo animal models and in vitro cell models were established by cecal ligation and puncture (CLP) method and lipopolysaccharide-induced macrophages RAW264.7. ANGPTL4 was silenced in CLP mice or macrophages, followed by the determination of ANGPTL4 expression in bronchoalveolar lavage fluid (BALF) or macrophages. Lung histopathology was observed by H&E staining, with pathological injury scores evaluated and lung wet and dry weight ratio recorded. M1/M2 macrophage marker levels (iNOS/CD86/Arg1), inflammatory factor (TNF-α/IL-6/IL-1β/iNOS) expression in BALF, cell death and pyroptosis, NLRP3 inflammasome, cell pyroptosis-related protein (NLRP3/Cleaved-caspase-1/caspase-1/GSDMD-N) levels, NF-κB pathway activation were assessed by RT-qPCR/ELISA/flow cytometry/Western blot, respectively | ||
520 | |a RESULTS: ANGPTL4 was highly expressed in mice with sepsis-induced ALI, and ANGPTL4 silencing ameliorated sepsis-induced ALI in mice. In vivo, ANGPTL4 silencing repressed M1 macrophage polarization and macrophage pyroptosis in mice with sepsis-induced ALI. In vitro, ANGPTL4 knockout impeded LPS-induced activation and pyroptosis of M1 macrophages and hindered LPS-induced activation of the NF-κB pathway in macrophages | ||
520 | |a CONCLUSION: Knockdown of ANGPTL4 blocks the NF-κB pathway activation, hinders macrophage M1 polarization and pyroptosis, thereby suppressing sepsis-induced ALI | ||
650 | 4 | |a Journal Article | |
650 | 4 | |a Acute lung injury | |
650 | 4 | |a Angiopoietin-like 4 | |
650 | 4 | |a M1 polarization | |
650 | 4 | |a Macrophage | |
650 | 4 | |a Pyroptosis | |
650 | 4 | |a Sepsis | |
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650 | 7 | |a Caspases |2 NLM | |
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650 | 7 | |a Lipopolysaccharides |2 NLM | |
650 | 7 | |a NF-kappa B |2 NLM | |
650 | 7 | |a NLR Family, Pyrin Domain-Containing 3 Protein |2 NLM | |
650 | 7 | |a Angptl4 protein, mouse |2 NLM | |
700 | 1 | |a Bai, Lina |e verfasserin |4 aut | |
700 | 1 | |a Li, Qinglin |e verfasserin |4 aut | |
700 | 1 | |a Sun, Yubo |e verfasserin |4 aut | |
700 | 1 | |a Li, Mei |e verfasserin |4 aut | |
700 | 1 | |a Wang, Jiazhi |e verfasserin |4 aut | |
700 | 1 | |a Shi, Xiaoli |e verfasserin |4 aut | |
700 | 1 | |a Zhao, Meng |e verfasserin |4 aut | |
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