Figure 4. Induction of cathelicidin protein (hCAP18) expression in U937 cells by stilbenoid compounds.
U937 cells were treated with either 10 μM resveratrol (RSV, panel A) or 10 μM pterostilbene (PTR, panel C) alone or in combination with 1 nM 1,25(OH)2D3 (Panels B and D) for 24 h. Intracellular staining for hCAP18 and FACS was used to determine the expression level of hCAP18 in the cells. Results are representative of two independent experiments.