Journal: PLOS One
Article Title: Clinical proof of concept for small molecule mediated inhibition of IL-17 in psoriasis
doi: 10.1371/journal.pone.0341049
Figure Lengend Snippet: (A) Inhibition of IL-17 bioactivity as secreted by human TH17 cells and assayed by a reporter cell assay. Dotted lines represent positive and negative assay controls. 1 representative of 7 experiments with different donors is shown. The error bars represent the SEM. (B, C) Evaluation of DC-806 in rat CIA. Rats were randomized on Day 11 and dosed as indicated. Daily measurements of ankle thickness (B) and terminal measurement of footpad weights (C) were used as efficacy readouts. (D) Preclinical evaluation of DC-806 serum levels. PK sampling for exposure determination was performed on Days 11, 16, at 1 and 12 hours post dose. The dotted lines represent the uncorrected IC 50 for rat IL-17AA and rat IL-17AF as listed in . The dashed line represents the LLQ of the quantification assay. All error bars represent the SEM. * P < 0.05; ** P < 0.01; *** P < 0.001; **** P < 0.0001. Abbreviations : anti-F, anti-IL-17F; BID, twice daily; CIA, collagen-induced arthritis; Dex, dexamethasone; IC 50 , half-maximal inhibitory concentration; IL-17, interleukin-17; LLQ, lower limit of quantification; PK, pharmacokinetic; QD, once daily; SEM, standard error of mean; TH17, T-helper 17.
Article Snippet: To determine cellular potency, recombinant human (h)IL-17AA (Genscript cat# Z03228), hIL-17AF (R&D cat# 5837-IL-010), hIL-17FF (R&D Systems 1335-IL), rat IL-17AA (R&D systems 8410-IL-025), and rat IL-17AF (R&D systems 9340-IL-025) were used for in vitro stimulation at the concentrations listed in .
Techniques: Inhibition, Sampling, Concentration Assay