Fig. 2.

MM-derived MIF regulates bone marrow stromal cell-derived IL-6 and IL-8 via cMYC. a, b BMSC cells were pretreated with various drugs (bortezomib 10 nM, PS341 100 nM, Lenolidiomide 500 nM, JNKV 10uM, and JQ1 500 nM) for 30 mins and then activated with MIF for 2 h. RNA was extracted, and transcriptional levels of IL-6 (a) or IL-8 (b) was analyzed. c Schematic showing JQ1 in vivo experiment. 1 × 10⁶ U266 cells were injected via the tail vein of NGS mice (n = 8). Following a 2-week engraftment period, mice were treated with 50 mg/kg JQ1 or vehicle control daily for 5 days, after which all mice were sacrificed. d Mice were monitored pre and post treatment with JQ1 by bioluminescent imaging which was quantified (f) by ImageJ densitometry. e ELISA data showing murine IL-6 serum concentration following JQ1 treatment. Baseline levels of murine IL-6 were non-detectable in mice without MM