FIGURE 5.
MiRNA mimics differentially modulate transcription and intracellular accumulation of cytokines. MiRNA mimics, inhibitors or control transfected cell were challenged with E. coli and cytokine mRNA levels were examined by qRT-PCR after 4 h. (A) Expression levels of TNF-α, IL-6 and IL-12p40 are shown for Mφ and DC. (B) ELISA showing intracellular cytokine expression in Mφ and DC. (C) Immunostaining shows decreased intracellular TNF-α in miRNA mimic overexpressing Mφ. Images were captured using a fluorescent microscope and a 20x objective lens. Green signals indicate intracellular TNF-α. Cells were counterstained with Hoechst nuclear dye. Scale bar, 200μm. The yellow arrows point to accumulation of TNF-α localized to the cell periphery. The data represents three different fields captured from each well from at least three independent experiments. Student's t-test was conducted to calculate p values. *p< 0.01 was considered as significant.