Figure 2.
Transfer of nHDL-[3H]FC to Serum Lipoproteins. nHDL-[3H]FC was prepared from BHK-ABCA1 cells labeled with [3H]FC as in Figure 1. nHDL-[3H]FC were tested under several conditions and analyzed by SEC, which was monitored by β-counting of the collected fractions. A) nHDL-[3H]FC; B) nHDL-[3H]FC incubated with HDL at 4 °C and immediately analyzed by SEC (0 min). C) nHDL-[3H]FC incubated with serum at 4 °C or 37oC for various times as labeled and analyzed by SEC. D) Kinetics of [3H]FC accumulation in LDL (fractions encompassed by grey box in Panel C). E) The kinetics of nHDL-[3H]FC transfer to isolated LDL determined by heparin-Mn+2 precipitation of LDL.