Figure 7.

Production of IL-6 and GRO-α by the patients’ fibroblasts in responses to IL-17 cytokines, after transfection with the WT or mutant IL17RC alleles. (A and B) IL-6 and GRO-α production by SV40-immortalized fibroblasts from a control, P1, P2, and an IL-17RA–deficient patient transfected with an empty vector (mock) or an IL-17RC vector encoding the WT or each one of the mutant (Q138*, R376*, or R378*) proteins, after 24 h of stimulation with 100 ng/ml IL-17A, as determined by ELISA on supernatants. NS, nonstimulated; NT, not transfected. Means ± SD (error bars) of three independent experiments are shown. Statistical analyses were performed by the nonparametric statistical test (Mann–Whitney test; **, P < 0.01). The experiments were repeated at least three times.

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