Figure 2.
In vitro uptake of Cy5.5 labeled synthetic HDL agents in J774A.1 murine macrophages. Uptake was assessed using an IVIS 200 fluorescent imaging system. A) Fluorescent images of cells treated with 18A-Gd or 37pA-Gd, with 18A-Gd or 37pA-Gd and a tenfold excess of agent without Cy5.5, untreated cells or treated with Gd-micelles. B) Quantified fluorescence of macrophages compared with macrophages under competition-inhibition conditions and untreated macrophages. Incubation conditions were 2 hours and 0.02 mM (by Gd) of agent. * indicates p<0.01 as compared to the treated macrophage cells. C) Comparison of the uptake of 18A-Gd and 37pA-Gd in macrophages and smooth muscle cells. D) and E) show the quantified fluorescence of 18A-Gd and 37pA-Gd respectively, when incubated for 2 hours at the indicated concentrations (the solid lines are logarithmic lines of best fit generated by a Matlab program). Error bars are equal to one standard deviation and n=12 in all cases.