Among the human myeloid and lymphoid cell lines, the mRNA expression of IL-23R is more abundant in K562 cells than in Jurkat cells [12 (link)]. We chose K562 cells for this study. K562 cells, a human erythroleukemia line, purchased from the American Type Culture Collection (Manassas, VA, USA) were cultured in medium with or without the presence of IL-23 (20 ng/ml; Sigma-Aldrich, St. Louis, MO, USA) for 3 days according to previous studies [13 (link), 14 (link)] with some modifications. These cells were used for subsequent analysis.
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