title: Resveratrol and its major sulfated conjugates are substrates of organic anion transporting polypeptides (OATPs): impact on growth of ZR-75-1 breast cancer cells.
abstract: METHODS
  Resveratrol is a naturally occurring polyphenolic compound with various pharmacological activities. These effects are observed despite its low bioavailability, which is particularly caused by extensive phase II metabolism. It is unknown whether resveratrol and its metabolites can accumulate to bioactive levels in organs and tissues through protein-mediated transport mechanisms. Because organic anion transporting polypeptides (OATPs) mediate the uptake of many clinically important drugs, we investigated their role in the cellular transport of resveratrol and its major glucuronides and sulfates.
  
  
  RESULTS
  Uptake experiments were performed with resveratrol and its glucuronides and sulfates in OATP-expressing Chinese hamster ovary (CHO) and breast cancer (ZR-75-1) cells. The uptake rates for resveratrol in OATP1B1-, OATP1B3-, and OATP2B1-transfected Chinese hamster ovary cells were four- to sixfold higher compared to wild-type cells. Resveratrol-3-O-4'-O-disulfate was transported by OATP1B1 and OATP1B3, while resveratrol-3-O-sulfate was exclusively transported by OATP1B3. However, resveratrol-4'-O-sulfate, resveratrol-3-O-glucuronide, and resveratrol-4'-O-glucuronide did not show any affinity for these OATPs. OATP-dependent uptake of resveratrol was also confirmed in ZR-75-1 cells.
  
  
  CONCLUSIONS
  Our data revealed that OATPs act as cellular uptake transporters for resveratrol and its major sulfates, which must be considered in humans following oral uptake of dietary resveratrol.
authors.affiliation: Department of Clinical Pharmacy and Diagnostics, University of Vienna, Vienna, Austria.
authors.forename: Juliane
authors.initials: J
authors.lastname: Riha
authors.forename: Stefan
authors.initials: S
authors.lastname: Brenner
authors.forename: Michaela
authors.initials: M
authors.lastname: Böhmdorfer
authors.forename: Benedikt
authors.initials: B
authors.lastname: Giessrigl
authors.forename: Marc
authors.initials: M
authors.lastname: Pignitter
authors.forename: Katharina
authors.initials: K
authors.lastname: Schueller
authors.forename: Theresia
authors.initials: T
authors.lastname: Thalhammer
authors.forename: Bruno
authors.initials: B
authors.lastname: Stieger
authors.forename: Veronika
authors.initials: V
authors.lastname: Somoza
authors.forename: Thomas
authors.initials: T
authors.lastname: Szekeres
authors.forename: Walter
authors.initials: W
authors.lastname: Jäger
mesh_terms: D000818:Animals; D001692:Biological Transport; D001943:Breast Neoplasms / Q000188:drug therapy* / Q000378:metabolism / Q000473:pathology; D016466:CHO Cells / Q000187:drug effects; D045744:Cell Line, Tumor / Q000187:drug effects; D003412:Cricetulus; D005260:Female; D055785:Gene Knockdown Techniques; D020719:Glucuronides / Q000493:pharmacokinetics; D027381:Liver-Specific Organic Anion Transporter 1; D027361:Organic Anion Transporters / Q000037:antagonists & inhibitors / Q000235:genetics / Q000378:metabolism*; D029362:Organic Anion Transporters, Sodium-Independent / Q000235:genetics / Q000378:metabolism; D000077185:Resveratrol; D012293:Rifampin / Q000494:pharmacology; D000074542:Solute Carrier Organic Anion Transporter Family Member 1B3; D013267:Stilbenes / Q000378:metabolism / Q000493:pharmacokinetics / Q000494:pharmacology*
chemical_list: D020719:Glucuronides; D027381:Liver-Specific Organic Anion Transporter 1; D027361:Organic Anion Transporters; D029362:Organic Anion Transporters, Sodium-Independent; C503999:SLCO1B1 protein, human; C421209:SLCO1B3 protein, human; C450859:SLCO2B1 protein, human; D000074542:Solute Carrier Organic Anion Transporter Family Member 1B3; D013267:Stilbenes; C000599822:resveratrol-3-O-4'-disulfate; C499731:resveratrol-4'-O-glucuronide; D000077185:Resveratrol; D012293:Rifampin
keywords: Breast cancer; Metabolism; OATP/Resveratrol; Transport