Acetyl-CoA synthetase 2 induces pyroptosis and inflammation of renal epithelial tubular cells in sepsis-induced acute kidney injury by upregulating the KLF5/NF-κB pathway
© 2024. The Author(s)..
BACKGROUND: Pyroptosis of the renal tubular epithelial cells (RTECs) and interstitial inflammation are central pathological characteristics of acute kidney injury (AKI). Pyroptosis acts as a pro-inflammatory form of programmed cell death and is mainly dependent on activation of the NLRP3 inflammasome. Previous studies revealed that acetyl-CoA synthetase 2 (ACSS2) promotes inflammation during metabolic stress suggesting that ACSS2 might regulate pyroptosis and inflammatory responses of RTECs in AKI.
METHODS AND RESULTS: The expression of ACSS2 was found to be significantly increased in the renal epithelial cells of mice with lipopolysaccharide (LPS)-induced AKI. Pharmacological and genetic strategies demonstrated that ACSS2 regulated NLRP3-mediated caspase-1 activation and pyroptosis through the stimulation of the KLF5/NF-κB pathway in RTECs. The deletion of ACSS2 attenuated renal tubular pathological injury and inflammatory cell infiltration in an LPS-induced mouse model, and ACSS2-deficient mice displayed impaired NLRP3 activation-mediated pyroptosis and decreased IL-1β production in response to the LPS challenge. In HK-2 cells, ACSS2 deficiency suppressed NLRP3-mediated caspase-1 activation and pyroptosis through the downregulation of the KLF5/NF-κB pathway. The KLF5 inhibitor ML264 suppressed NF-κB activity and NLRP3-mediated caspase-1 activation, thus protecting HK-2 cells from LPS-induced pyroptosis.
CONCLUSION: Our results suggested that ACSS2 regulates activation of the NLRP3 inflammasome and pyroptosis by inducing the KLF5/NF-κB pathway in RTECs. These results identified ACSS2 as a potential therapeutic target in AKI.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:22 |
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| Enthalten in: |
Cell communication and signaling : CCS - 22(2024), 1 vom: 21. März, Seite 187 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Lu, Jian [VerfasserIn] |
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| Links: |
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| Anmerkungen: |
Date Completed 25.03.2024 Date Revised 27.03.2024 published: Electronic Citation Status MEDLINE |
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| doi: |
10.1186/s12964-024-01556-3 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM370047354 |
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| 245 | 1 | 0 | |a Acetyl-CoA synthetase 2 induces pyroptosis and inflammation of renal epithelial tubular cells in sepsis-induced acute kidney injury by upregulating the KLF5/NF-κB pathway |
| 264 | 1 | |c 2024 | |
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| 500 | |a Date Revised 27.03.2024 | ||
| 500 | |a published: Electronic | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a © 2024. The Author(s). | ||
| 520 | |a BACKGROUND: Pyroptosis of the renal tubular epithelial cells (RTECs) and interstitial inflammation are central pathological characteristics of acute kidney injury (AKI). Pyroptosis acts as a pro-inflammatory form of programmed cell death and is mainly dependent on activation of the NLRP3 inflammasome. Previous studies revealed that acetyl-CoA synthetase 2 (ACSS2) promotes inflammation during metabolic stress suggesting that ACSS2 might regulate pyroptosis and inflammatory responses of RTECs in AKI | ||
| 520 | |a METHODS AND RESULTS: The expression of ACSS2 was found to be significantly increased in the renal epithelial cells of mice with lipopolysaccharide (LPS)-induced AKI. Pharmacological and genetic strategies demonstrated that ACSS2 regulated NLRP3-mediated caspase-1 activation and pyroptosis through the stimulation of the KLF5/NF-κB pathway in RTECs. The deletion of ACSS2 attenuated renal tubular pathological injury and inflammatory cell infiltration in an LPS-induced mouse model, and ACSS2-deficient mice displayed impaired NLRP3 activation-mediated pyroptosis and decreased IL-1β production in response to the LPS challenge. In HK-2 cells, ACSS2 deficiency suppressed NLRP3-mediated caspase-1 activation and pyroptosis through the downregulation of the KLF5/NF-κB pathway. The KLF5 inhibitor ML264 suppressed NF-κB activity and NLRP3-mediated caspase-1 activation, thus protecting HK-2 cells from LPS-induced pyroptosis | ||
| 520 | |a CONCLUSION: Our results suggested that ACSS2 regulates activation of the NLRP3 inflammasome and pyroptosis by inducing the KLF5/NF-κB pathway in RTECs. These results identified ACSS2 as a potential therapeutic target in AKI | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Acetyl-CoA synthetase 2 | |
| 650 | 4 | |a Acute kidney injury | |
| 650 | 4 | |a Pyroptosis | |
| 650 | 4 | |a Sepsis | |
| 650 | 7 | |a Acetyl Coenzyme A |2 NLM | |
| 650 | 7 | |a 72-89-9 |2 NLM | |
| 650 | 7 | |a Caspase 1 |2 NLM | |
| 650 | 7 | |a EC 3.4.22.36 |2 NLM | |
| 650 | 7 | |a Inflammasomes |2 NLM | |
| 650 | 7 | |a Ligases |2 NLM | |
| 650 | 7 | |a EC 6.- |2 NLM | |
| 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 ACSS2 protein, mouse |2 NLM | |
| 650 | 7 | |a EC 6.2.1.1 |2 NLM | |
| 700 | 1 | |a Hou, Ya |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Si-Xiu |e verfasserin |4 aut | |
| 700 | 1 | |a Jin, Bo |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Jing |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Nan |e verfasserin |4 aut | |
| 700 | 1 | |a Zhu, Yan |e verfasserin |4 aut | |
| 700 | 1 | |a Zhang, Qing-Yan |e verfasserin |4 aut | |
| 700 | 1 | |a Wan, Cheng |e verfasserin |4 aut | |
| 700 | 1 | |a Feng, Yuan |e verfasserin |4 aut | |
| 700 | 1 | |a Xie, Jun |e verfasserin |4 aut | |
| 700 | 1 | |a Jiang, Chun-Ming |e verfasserin |4 aut | |
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