BBR was purchased from Oddfoni Biological Technology Company (Nanjing, China). Verapamil, cyclosporin A (CsA), and Rhodamine123 were purchased from J&K Scientific Ltd. (Bei-jing, China). 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT), methanol, dimethyl sulphoxide (DMSO), and Brijs (Brij-L4, decaethylene glycol monododecyl ether [BD], Brij-L23, Brij-52 Brij-C10, Brij-58, Brij-93, Brij-O10, Brij-O20, Brij-S2, Brij-S10, Brij-S20, Brij-S100, D-α-Tocopherol polyethylene glycol 1000 succinate [TPGS]) were purchased from Sigma-Aldrich Co. (St. Louis, MO, USA). High-performance liquid chromatography (HPLC) grade acetonitrile was purchased from Merck Company (Darmstadt, Germany).
ATPlite luminescence ATP detection assay system was bought from Perkin Elmer (Waltham, MA, USA). Pgp-Glo assay system with human Pgp membrane was obtained from Promega (Madison, WI, USA). All materials for cell culture were obtained from Thermo Fisher Scientific (Waltham, MA, USA). Antibodies against Pgp and GAPDH, and anti-rabbit IgG were obtained from Cell Signaling Technology (Beverly, MA, USA).
ATPlite luminescence ATP detection assay system was bought from Perkin Elmer (Waltham, MA, USA). Pgp-Glo assay system with human Pgp membrane was obtained from Promega (Madison, WI, USA). All materials for cell culture were obtained from Thermo Fisher Scientific (Waltham, MA, USA). Antibodies against Pgp and GAPDH, and anti-rabbit IgG were obtained from Cell Signaling Technology (Beverly, MA, USA).