Figure 3.

Marginal effect of RO9021 in the JAK–STAT pathway. Human peripheral blood mononuclear cells were pretreated with RO9021 or the janus kinase (JAK) inhibitor tofacitinib and then stimulated with IL-2 to induce STAT5 phosphorylation in CD3+ T cells (A) or IFNγ to induce STAT1 phosphorylation in CD14+ monocytes/macrophages (B). Left panels, representative overlaid histograms of flow cytometric analysis. Filled gray, unstimulated; filled red, stimulated with IL-2 or IFNγ. Blue line, treatment with 1 μM RO9021; green line, treatment with 1 μM JAK inhibitor (tofacitinib). Right panels: concentration-dependent inhibition curves of RO9021 (dots) and tofacitinib (squares).

Liao et al. Arthritis Research & Therapy 2013 15:R146   doi:10.1186/ar4329
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