Journal: Frontiers in Immunology
Article Title: Secretory VSMC-derived THBS1 promotes macrophage M1 polarization and inflammation in intracranial aneurysms via the CD47/NF-κB axis
doi: 10.3389/fimmu.2026.1790488
Figure Lengend Snippet: Secretory VSMCs promote macrophage M1 polarization and inflammatory activation through the THBS1/CD47/NF-κB axis. (A) ELISA quantification of THBS1 secretion from HA-VSMCs before and after TGF-β1/PDGF-BB stimulation and following shTHBS1 transduction. (B–D) qRT-PCR analysis of macrophage IL-1β, TNF-α, and iNOS mRNA in the Transwell co-culture system. (E, F) ELISA quantification of IL-1β and TNF-α secretion in co-culture supernatants. (G, H) Flow cytometric analysis of CD86 + macrophages and NF-κB transcriptional activity (Dual-luciferase reporter assay). All in vitro experiments were independently performed in three biological replicates (n = 3). Data are presented as mean ± standard deviation (SD). Statistical comparisons among multiple groups were performed using one-way analysis of variance (ANOVA) followed by Tukey’s post hoc multiple-comparison test. *P < 0.05, **P < 0.01, ***P < 0.001.
Article Snippet: At the protein secretion level, commercially available Quantikine ® ELISA kits (R&D Systems, DY201 for IL-1β; DY210 for TNF-α) were used to quantify IL-1β and TNF-α concentrations in the lower-chamber supernatants following the manufacturer’s instructions.
Techniques: Activation Assay, Enzyme-linked Immunosorbent Assay, Transduction, Quantitative RT-PCR, Co-Culture Assay, Activity Assay, Luciferase, Reporter Assay, In Vitro, Standard Deviation, Comparison