title: Probing multidrug resistance P-glycoprotein transporter activity with SPECT radiopharmaceuticals.
abstract: Multidrug resistance (MDR) mediated by overexpression of MDR1 (ABCB1) P-glycoprotein (Pgp) is one of the best characterized transporter-mediated barriers to successful chemotherapy in cancer patients and is also a rapidly emerging target in the progression of neurodegenerative disorders such as Alzheimer's and Parkinson's diseases. Therefore, molecular imaging probes capable of imaging noninvasively Pgp and closely related transporter activities in tissues as well as tumors would be expected to contribute to personalized medicine. Interrogation of Pgp-mediated transport activity in vivo via noninvasive SPECT imaging could be beneficial for stratification of patient populations likely to benefit from a given therapeutic treatment, assist in the management of chemotherapy and aid the study of neurodegenerative diseases.
authors.affiliation: Molecular Imaging Center, Washington University Medical School, St. Louis, MO, USA. piwnica-wormsd@mir.wustl.edu
authors.forename: David
authors.initials: D
authors.lastname: Piwnica-Worms
authors.forename: Vijay
authors.initials: V
authors.lastname: Sharma
mesh_terms: D000818:Animals; D018432:Drug Resistance, Multiple; D019008:Drug Resistance, Neoplasm; D006801:Humans; D015335:Molecular Probes / Q000493:pharmacokinetics; D027425:ATP-Binding Cassette, Sub-Family C Proteins / Q000378:metabolism*; D009369:Neoplasms / Q000000981:diagnostic imaging* / Q000188:drug therapy / Q000378:metabolism*; D019636:Neurodegenerative Diseases / Q000000981:diagnostic imaging* / Q000188:drug therapy / Q000378:metabolism*; D049268:Positron-Emission Tomography; D019275:Radiopharmaceuticals / Q000493:pharmacokinetics*
chemical_list: D015335:Molecular Probes; D027425:ATP-Binding Cassette, Sub-Family C Proteins; D019275:Radiopharmaceuticals; C421109:multidrug resistance-associated protein 1