ABCB1 and uterine corpus sarcoma: All synthesized complexes and representatives of the respective ligands (Lb, Lc, SIPr, IPr) were tested in a triple coculture of uterine sarcoma cell lines, consisting of the parental Mes-Sa cell line, and its MDR derivatives Mes-Sa/B1 and Mes-Sa/Dx5, transfected or selected in doxorubicin to overexpress P-glycoprotein, respectively (Figure 2a–c, Table S2).