Research Article

SerpinB3/B4 Abates Epithelial Cell-Derived CXCL8/IL-8 Expression in Chronic Rhinosinusitis with Nasal Polyps

Figure 4

Regulation of SerpinB3 and B4 by cytokines: (a, b) SerpinB3 and SerpinB4 expression are measured using real-time PCR 24 hr after stimulating ALI-cultured HNECs with IL-6, IL-1β, TGF-β1, IL-4, IL-5, IL-13, IFN-γ, IL-17a, and IL-8 (n = 5). RNA expression is measured from ABI ViiA™ 7 real-time PCR system and calculated as arbitrary units (2(–Δct) × 1,000) and normalized according to untreated group. Data are presented as mean ± SD and shown through Graphpad prism 8.0. GAPDH is used as the reference gene. , . SerpinB, serine proteinase inhibitor, clade B; ALI, air–liquid interface; and HNECs, primary human nasal epithelial cells.
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