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Article Abstract
Background: Ischemic stroke (IS) is the leading cause of mortality worldwide. Herein, we aimed to identify novel biomarkers and explore the role of C-type lectin domain family 7 member A () in IS.
Methods: Differentially expressed genes (DEGs) were screened using the GSE106680, GSE97537, and GSE61616 datasets, and hub genes were identified through construction of protein-protein interaction networks. An IS model was established by middle cerebral artery occlusion and reperfusion (MCAO/R). Neural function was assessed using triphenyl tetrazolium chloride, hematoxylin-eosin, and terminal deoxynucleotidyl transferase-mediated nick-end labeling. A cell counting kit was used to detect cell viability following oxygen-glucose deprivation/reperfusion (OGD/R). Inflammatory factors were detected using enzyme-linked immunosorbent assay. The mRNA and protein expression levels were detected using reverse transcription-quantitative polymerase chain reaction and western blotting, respectively.
Results: Fc fragment of Immunoglobulin G (IgG) receptor IIIa (), Fc fragment of Immunoglobulin E (IgE) receptor Ig (), Complement component 5a receptor 1 (), , Plasminogen activator, urokinase (), and C-C motif chemokine ligand 6 () were identified as important hub genes, from which was selected as the primary subject of this study. The activation of microglia and pyroptosis were observed in MCAO/R model with increased levels of interleukin (IL)-1β, IL-18, tumor necrosis factor-α, and lactate dehydrogenase. knockdown was found to promote cell viability in BV2 cells and inhibiting pyroptosis in HT22 cells. knockdown in microglia also decreased infarct volume and neurological deficit scores, and alleviated injury and neuronal apoptosis in IS rats. knockdown inhibited pyroptosis and microglial activation in the MCAO/R model. A pyroptosis activator reversed the effect of knockdown on the viability of OGD/R-treated HT22 cells.
Conclusion: is a promising biomarker of IS. knockdown alleviates IS by inhibiting pyroptosis and microglial activation.
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