Cited by 295Treatment of Major DepressionInflammasome and immune disordersMedicinal Plant Extracts Effects

Isoliquiritin ameliorates depression by suppressing NLRP3-mediated pyroptosis via miRNA-27a/SYK/NF-κB axis.

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Li, Yuanjie, Song, Wen, Tong, Yue, Zhang, Xia, Zhao, Jianjun, Gao, Xiaojuan, Yong, Jingjiao, Wang, Hanqing·2021·Journal of Neuroinflammation

Abstract

BACKGROUND: The NLRP3-mediated pyroptosis, which could be regulated by miRNA-27a, is a key player in the development of depression. Isoliquiritin is a phenolic flavonoid compound that has been demonstrated to suppress NLRP3-mediated pyroptosis. However, it is still unknown whether isoliquiritin could confer antidepressant activity via decreasing NLRP3-mediated pyroptosis by stimulating miRNA-27a. Thus, in the current study, we explored the antidepressant activity of isoliquiritin and its underlying mechanism. METHODS: Expression of miRNA-27a in depressed patients or mice was measured using qRT-PCR. Luciferase reporter assay was performed to illustrate the link between miRNA-27a and SYK. Lipopolysaccharide (LPS) and chronic social defeat stress (CSDS) depression models were established to investigate the antidepressant actions of isoliquiritin. Changes in miRNA-27a/SYK/NF-κB axis and NLRP3-mediated pyroptosis were also examined. The role of miRNA-27a in isoliquiritin-related antidepressant effect was further investigated by using miRNA-27a inhibitors and mimics of miRNA-27a. RESULTS: Our results showed the miRNA-27a expression was downregulated in the serum of depressed patients, and decreased serum and hippocampus expression of miRNA-27a were observed in rodent models of depression. SYK gene expression was significantly reduced by miRNA-27a mimic incubation. Isoliquiritin profoundly attenuated LPS or CSDS-induced depressive symptoms, as well as CSDS-induced anxiety behavior. In the hippocampus, LPS and CSDS decreased miRNA-27a mRNA expression; increased the protein levels of SYK, p-NF-κB, and NLRP3: cleaved Caspase-1, IL-1β, and GSDMD-N: and elevated the concentration of IL-1β, IL-6, and TNF-α, which were all restored by isoliquiritin administration. Meanwhile, isoliquiritin upregulated the hippocampal NeuN protein level, improved the survival and morphology of neurons, and decreased pyroptosis-related neuronal cell death. Moreover, isoliquiritin protected primary microglia against LPS and adenosine triphosphate (ATP) elicited NLRP3 inflammasome activation in vitro, evidenced by declined protein levels of p-NF-κB, NLRP3; cleaved Caspase-1, IL-1β, and GSDMD-N; upregulated miRNA-27a mRNA expression; and decreased the mRNA and protein levels of SYK. Nevertheless, miRNA-27a inhibitors significantly reversed isoliquiritin-generated therapeutic efficacy in CSDS mice and in vitro. Furthermore, the cytoprotective effect of isoliquiritin was similar to that of miRNA-27a mimics in LPS and ATP-treated primary microglia. Taken together, these findings suggest that isoliquiritin possesses potent antidepressant property, which requires miRNA-27a/SYK/NF-κB axis controlled decrease of pyroptosis via NLRP3 cascade.

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Authors
Li, Y., Song, W., Tong, Y., Zhang, X., Zhao, J., Gao, X., Yong, J., & Wang, H.
Affiliations
Ningxia Medical University (CN)
Corresponding author
Wang, Hanqing
Venue
Journal of Neuroinflammation
Published
2021-01-05
Volume
18
Issue
1
Pages
1-1
ISSN
1742-2094 (ISSN-L)
OpenAlex
W3119186431
Cited by
295
References
43
Citations by year
2026: 36 · 2025: 71 · 2024: 65 · 2023: 59 · 2022: 53 · 2021: 11
FWCI
27.59
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroinflammation (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, other-oa)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
National Natural Science Foundation of China (81603227, 81460645)
Topics
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Inflammasome and immune disorders
  • Health Sciences › Medicine › Complementary and alternative medicine › Medicinal Plant Extracts Effects
Keywords
isoliquiritin, depression, antidepressant effects, NLRP3 inflammasome, pyroptosis, Syk, NF-κB signaling, hippocampus, microglia, neuroinflammation, chronic social defeat stress, lipopolysaccharide, neuronal survival, neuroprotection
MeSH terms
Pyroptosis, NLR Family, Pyrin Domain-Containing 3 Protein, Syk Kinase, Social Defeat, Adolescent, Adult, Animals, Animals, Newborn, Cells, Cultured, Chalcone, Depression, Female, Glucosides, Humans, Male, Mice, Inbred C57BL, Middle Aged, NF-kappa B, MicroRNAs, Mice, Young Adult

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