Tesmilifene hydrochloride is an antihistamine agent and a chemical sensitizer. Tesmilifene hydrochloride targets cytochrome P450, exhibits hormonal effects on DNA synthesis in MCF-7 cells, and stimulates the tumor growth in mouse/rat models. Tesmilifene hydrochloride overcomes multidrug resistance[1].
DPPE is a potent, selective ligand of the microsomal anti-estrogen binding site. DPPE is a tamoxifen derivataive th at binds with high affinity to the anti-estrogen binding site, but unlike tamoxifen, does not bind to the estrogen receptor. DPPE sensitizes MDR tumor cells to chemotherapy and also inhibits histamine binding at the intracellular histamine site.