NCIt definition : A difluorocyclopropyl quinoline. Zosuquidar binds with high affinity to P-glycoprotein
and inhibits P-glycoprotein-mediated multidrug resistance (MDR). P-glycoprotein, encoded
by the MDR-1 gene, is a member of the ATP-binding cassette superfamily of transmembrane
transporters and prevents the intracellular accumulation of many natural product-derived
cytotoxic agents.;