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Gibberellic acid targeting ZBTB16 reduces NF-κB dependent inflammatory stress in sepsis-induced neuroinflammation

Sepsis is frequently complicated by neuroinflammation. Gibberellic acid (GA3) is recognized for its anti-inflammatory properties. In this study, our objective was to investigate whether GA3 could alleviate Nuclear factor-kappa B (NF-κB) -dependent inflammatory stress in sepsis-induced neuroinflammat...

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Published in:European journal of pharmacology 2024-08, Vol.976, p.176665, Article 176665
Main Authors: Xu, Hao-jie, Lin, Ying-Yi, Yu, Jian-Jun, Zhang, Na, Hu, Jia-Min, Qu, Jin-Shuang, Yuan, Chao-Mei, Chen, Da-Qiu, Liang, Min, Cai, Hong-da, Zeng, Kai
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container_title European journal of pharmacology
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creator Xu, Hao-jie
Lin, Ying-Yi
Yu, Jian-Jun
Zhang, Na
Hu, Jia-Min
Qu, Jin-Shuang
Yuan, Chao-Mei
Chen, Da-Qiu
Liang, Min
Cai, Hong-da
Zeng, Kai
description Sepsis is frequently complicated by neuroinflammation. Gibberellic acid (GA3) is recognized for its anti-inflammatory properties. In this study, our objective was to investigate whether GA3 could alleviate Nuclear factor-kappa B (NF-κB) -dependent inflammatory stress in sepsis-induced neuroinflammation. C57BL/6 J mice were administered 10 mg/kg lipopolysaccharide (LPS) to induce sepsis. BV2 cells were pre-incubated with GA3 and subjected lipopolysaccharide stimulation to replicate the inflammatory microglia during sepsis. Subsequently, we assessed the release of IL-6, TNF-α, and IL-1β, along with the expression of Zbtb16, NF-κB, and IκB. To investigate whether any observed anti-inflammatory effects of GA3 were mediated through a Zbtb16-dependent mechanism, Zbtb16 was silenced using siRNA. GA3 improved the survival of sepsis mice and alleviated post-sepsis cognitive impairment. Additionally, GA3 attenuated microglial M1 activation (pro-inflammatory phenotype), inflammation, and neuronal damage in the brain. Moreover, GA3 inhibited the release of TNF-α, IL-6, and IL-1β in microglia stimulated with LPS. The NF-κB signaling pathway emerged as one of the key molecular pathways associated with the impact of GA3 on LPS-stimulated microglia. Lastly, GA3 upregulated Zbtb16 expression in microglia that had been downregulated by LPS. The inhibitory effects of GA3 on microglial M1 activation were partially reversed through siRNA knockdown of Zbtb16. Pre-incubation of microglia with GA3 led to the upregulation of the NF-κB regulator, Zbtb16. This process counteracted LPS-induced microglial M1 activation, resulting in an anti-inflammatory effect upon subsequent LPS stimulation. [Display omitted] •GA3 enhances the survival of sepsis mice and mitigates post-sepsis cognitive impairment.•GA3 suppresses LPS-stimulated inflammatory responses and mitigates injury in microglial.•GA3 impedes LPS-induced microglial M1 activation.•GA3 upregulates Zbtb16, to counteract LPS-induced microglial M1 activation and the subsequent release of inflammatory factors.
doi_str_mv 10.1016/j.ejphar.2024.176665
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Gibberellic acid (GA3) is recognized for its anti-inflammatory properties. In this study, our objective was to investigate whether GA3 could alleviate Nuclear factor-kappa B (NF-κB) -dependent inflammatory stress in sepsis-induced neuroinflammation. C57BL/6 J mice were administered 10 mg/kg lipopolysaccharide (LPS) to induce sepsis. BV2 cells were pre-incubated with GA3 and subjected lipopolysaccharide stimulation to replicate the inflammatory microglia during sepsis. Subsequently, we assessed the release of IL-6, TNF-α, and IL-1β, along with the expression of Zbtb16, NF-κB, and IκB. To investigate whether any observed anti-inflammatory effects of GA3 were mediated through a Zbtb16-dependent mechanism, Zbtb16 was silenced using siRNA. GA3 improved the survival of sepsis mice and alleviated post-sepsis cognitive impairment. Additionally, GA3 attenuated microglial M1 activation (pro-inflammatory phenotype), inflammation, and neuronal damage in the brain. Moreover, GA3 inhibited the release of TNF-α, IL-6, and IL-1β in microglia stimulated with LPS. The NF-κB signaling pathway emerged as one of the key molecular pathways associated with the impact of GA3 on LPS-stimulated microglia. Lastly, GA3 upregulated Zbtb16 expression in microglia that had been downregulated by LPS. The inhibitory effects of GA3 on microglial M1 activation were partially reversed through siRNA knockdown of Zbtb16. Pre-incubation of microglia with GA3 led to the upregulation of the NF-κB regulator, Zbtb16. This process counteracted LPS-induced microglial M1 activation, resulting in an anti-inflammatory effect upon subsequent LPS stimulation. [Display omitted] •GA3 enhances the survival of sepsis mice and mitigates post-sepsis cognitive impairment.•GA3 suppresses LPS-stimulated inflammatory responses and mitigates injury in microglial.•GA3 impedes LPS-induced microglial M1 activation.•GA3 upregulates Zbtb16, to counteract LPS-induced microglial M1 activation and the subsequent release of inflammatory factors.</description><identifier>ISSN: 0014-2999</identifier><identifier>ISSN: 1879-0712</identifier><identifier>EISSN: 1879-0712</identifier><identifier>DOI: 10.1016/j.ejphar.2024.176665</identifier><identifier>PMID: 38797312</identifier><language>eng</language><publisher>Netherlands: Elsevier B.V</publisher><subject>Gibberellic acid ; Inflammatory stress ; NF‐κB ; Sepsis-induced neuroinflammation ; Zbtb16</subject><ispartof>European journal of pharmacology, 2024-08, Vol.976, p.176665, Article 176665</ispartof><rights>2024 Elsevier B.V.</rights><rights>Copyright © 2024. 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Gibberellic acid (GA3) is recognized for its anti-inflammatory properties. In this study, our objective was to investigate whether GA3 could alleviate Nuclear factor-kappa B (NF-κB) -dependent inflammatory stress in sepsis-induced neuroinflammation. C57BL/6 J mice were administered 10 mg/kg lipopolysaccharide (LPS) to induce sepsis. BV2 cells were pre-incubated with GA3 and subjected lipopolysaccharide stimulation to replicate the inflammatory microglia during sepsis. Subsequently, we assessed the release of IL-6, TNF-α, and IL-1β, along with the expression of Zbtb16, NF-κB, and IκB. To investigate whether any observed anti-inflammatory effects of GA3 were mediated through a Zbtb16-dependent mechanism, Zbtb16 was silenced using siRNA. GA3 improved the survival of sepsis mice and alleviated post-sepsis cognitive impairment. Additionally, GA3 attenuated microglial M1 activation (pro-inflammatory phenotype), inflammation, and neuronal damage in the brain. Moreover, GA3 inhibited the release of TNF-α, IL-6, and IL-1β in microglia stimulated with LPS. The NF-κB signaling pathway emerged as one of the key molecular pathways associated with the impact of GA3 on LPS-stimulated microglia. Lastly, GA3 upregulated Zbtb16 expression in microglia that had been downregulated by LPS. The inhibitory effects of GA3 on microglial M1 activation were partially reversed through siRNA knockdown of Zbtb16. Pre-incubation of microglia with GA3 led to the upregulation of the NF-κB regulator, Zbtb16. This process counteracted LPS-induced microglial M1 activation, resulting in an anti-inflammatory effect upon subsequent LPS stimulation. 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subjects Gibberellic acid
Inflammatory stress
NF‐κB
Sepsis-induced neuroinflammation
Zbtb16
title Gibberellic acid targeting ZBTB16 reduces NF-κB dependent inflammatory stress in sepsis-induced neuroinflammation
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