ArticleCell cycle (Georgetown, Tex.)
Astrocyte-derived stanniocalcin-1 orchestrates epileptogenesis through NF-κB-dependent neuroinflammation.
Article in Cell cycle (Georgetown, Tex.). The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundThis study aimed to investigate the expression pattern of astrocyte-derived STC1 in TLE and elucidate the molecular mechanisms by which STC1 regulates neuroinflammation and seizures through the NF-κB signaling pathway.
methodsA TLE model was established by intrahippocampal injection of kainic acid (KA) in mice. STC1 expression levels and cellular localization in the hippocampus of TLE mice were examined. Adeno-associated virus-mediated gene overexpression and shRNA knockdown approaches were employed to investigate the effects of STC1 on neuroinflammatory responses, neuronal survival, and seizure activity. qRT-PCR and immunofluorescence methods were further utilized to evaluate inflammatory cytokine levels and NF-κB signaling pathway activity.
resultsSTC1 expression was upregulated in hippocampal tissues of TLE mice, with double immunofluorescence showing STC1 predominantly localized in GFAP-positive reactive astrocytes. STC1 overexpression significantly exacerbated KA-induced neuroinflammation, along with enhanced microglial activation. STC1 knockdown attenuated neuroinflammatory responses. Nissl staining and NeuN immunohistochemistry confirmed that STC1 aggravated KA-induced neuronal loss. STC1 overexpression promoted p65 phosphorylation and nuclear translocation, activating the NF-κB signaling pathway.
conclusionThis study reveals the molecular mechanism by which astrocyte-derived STC1 promotes TLE-associated neuroinflammation and neuronal injury through activation of the NF-κB signaling pathway, elucidating the crucial role of the astrocyte-STC1-NF-κB axis in epileptogenesis.
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