Figure 6. Enforced expression of IL-6 alters expression of DNMT-1 targeting miRNA in vivo.
IL-6 over-expressing (Mz-IL-6) or control (Mz-1) cells (3×106) were injected subcutaneously into the flank of athymic BALB/c mice. Panel A: Western blot analysis was performed in tissue lysates from tumor cell xenografts using antibodies to DNMT-1, Rassf1a, p16INK4a, and α-tubulin. A representative blot image is shown on left panel whereas the densitometric analysis is shown on right panel. Panel B: miRNA was extracted from xenograft tissues and miR-148a, miR-152 and miR-301 expression was assessed by quantitative real-time PCR. Potential DNMT-1 targeting miRNA expressions were normalized to expression of RNU6B. The data represent results from three experiments performed in triplicate. *p<0.05 when compared with miRNA expression in control cell xenografts.