ABCG2 and colon adenocarcinoma: The same phenomenon was observed in human colon adenocarcinoma cells (DLD-1 and SW-620) and nonmalignant cells (NRK and Swiss-3T3)30 A study performed on MCF-7 and HDF cells showed that the anticancer ability of PG was independent of the MDR1, BCRP, or MRP transporter.