Fluticasone inhibits TNF-α-induced CXCL10, CXCL8, and CCL5 production by fetal human airway smooth muscle (ASM) cells. Quiescent fetal ASM cells generated small amounts of CXCL10 (Δ), CXCL8 (X), and CCL5 (□), protein (panel a). Stimulation with TNF-α resulted in a dose-dependent increase in production of all three cytokines. Fluticasone (FP) attenuated TNF-α (20 ng/ml) stimulated production of CXCL10, CXCL8, and CCL5 by 50, 25, and 85% respectively (panels b–d). Note fetal ASM cells were treated with vehicle or TNF-α following pretreatment (1 h) with vehicle or fluticasone. Supernatant chemokine concentrations were determined by enzyme-linked immunosorbent assay as described in the Methods section and expressed in picograms per milliliter ± SEM of three separate experiments, *P < 0.05, **P < 0.01.