LL-37 increases the release of protumorigenic molecules from ovarian cancer cells. A. Serum-starved ovarian cancer cells were treated with 5 μg/mL of LL-37 for 48 h, then conditioned medium was analyzed by Luminex-based cytokine arrays. The amount of cytokines and growth factors in conditioned medium is represented graphically. B. Ptx-treated SK-OV-3 cells, SK-OV-3 nontarget cells, and SK-OV-3/FPRL1 KD-2 cells were treated with LL-37 as above. The levels of EGF, CXCL10, and PDGF-BB were measured in conditioned medium after 48 h. Columns, mean of three or more independent experiments; bars, SE (*, P < 0.05; **, P < 0.01; ***, P < 0.001).