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Solute carrier organic anion transporter family member 1B3 (SLCO1B3) also known as organic anion-transporting polypeptide 1B3 (OATP1B3) is a protein that in humans is encoded by the SLCO1B3gene.[1]
OATP1B3 is a 12-transmembrane domain influx transporter. Normally expressed in the liver, the transporter functions to uptake large, non-polar drugs and hormones from the portal vein.
OATP1B3 has also been identified as a transporter aberrantly expressed in prostate cancer and implicated in prostate cancer progression.[2] Increasing mRNA expression of OATP1B3 was also correlated to prostate cancer Gleason score.[3]
In addition, lower expression of OATP1B3 mRNA was also detected in testicular cancer.[3]
Substrates
Small molecules that are transported by SLCO1B3 include:[4]
↑Hagenbuch B, Gui C (July 2008). "Xenobiotic transporters of the human organic anion transporting polypeptides (OATP) family". Xenobiotica. 38 (7–8): 778–801. doi:10.1080/00498250801986951. PMID18668430.
Further reading
König J, Cui Y, Nies AT, Keppler D (2000). "Localization and genomic organization of a new hepatocellular organic anion transporting polypeptide". J. Biol. Chem. 275 (30): 23161–8. doi:10.1074/jbc.M001448200. PMID10779507.
Abe T, Unno M, Onogawa T, et al. (2001). "LST-2, a human liver-specific organic anion transporter, determines methotrexate sensitivity in gastrointestinal cancers". Gastroenterology. 120 (7): 1689–99. doi:10.1053/gast.2001.24804. PMID11375950.
Cui Y, König J, Nies AT, et al. (2003). "Detection of the human organic anion transporters SLC21A6 (OATP2) and SLC21A8 (OATP8) in liver and hepatocellular carcinoma". Lab. Invest. 83 (4): 527–38. doi:10.1097/01.lab.0000065015.02412.48. PMID12695556.
Ota T, Suzuki Y, Nishikawa T, et al. (2004). "Complete sequencing and characterization of 21,243 full-length human cDNAs". Nat. Genet. 36 (1): 40–5. doi:10.1038/ng1285. PMID14702039.
Vavricka SR, Jung D, Fried M, et al. (2004). "The human organic anion transporting polypeptide 8 (SLCO1B3) gene is transcriptionally repressed by hepatocyte nuclear factor 3beta in hepatocellular carcinoma". J. Hepatol. 40 (2): 212–8. doi:10.1016/j.jhep.2003.10.008. PMID14739090.
Hirano M, Maeda K, Shitara Y, Sugiyama Y (2004). "Contribution of OATP2 (OATP1B1) and OATP8 (OATP1B3) to the hepatic uptake of pitavastatin in humans". J. Pharmacol. Exp. Ther. 311 (1): 139–46. doi:10.1124/jpet.104.068056. PMID15159445.
Letschert K, Keppler D, König J (2005). "Mutations in the SLCO1B3 gene affecting the substrate specificity of the hepatocellular uptake transporter OATP1B3 (OATP8)". Pharmacogenetics. 14 (7): 441–52. doi:10.1097/01.fpc.0000114744.08559.92. PMID15226676.
Yamaguchi H, Okada M, Akitaya S, et al. (2006). "Transport of fluorescent chenodeoxycholic acid via the human organic anion transporters OATP1B1 and OATP1B3". J. Lipid Res. 47 (6): 1196–202. doi:10.1194/jlr.M500532-JLR200. PMID16534140.
Ohtsuka H, Abe T, Onogawa T, et al. (2006). "Farnesoid X receptor, hepatocyte nuclear factors 1alpha and 3beta are essential for transcriptional activation of the liver-specific organic anion transporter-2 gene". J. Gastroenterol. 41 (4): 369–77. doi:10.1007/s00535-006-1784-3. PMID16741617.
Briz O, Romero MR, Martinez-Becerra P, et al. (2006). "OATP8/1B3-mediated cotransport of bile acids and glutathione: an export pathway for organic anions from hepatocytes?". J. Biol. Chem. 281 (41): 30326–35. doi:10.1074/jbc.M602048200. PMID16877380.
Mahagita C, Grassl SM, Piyachaturawat P, Ballatori N (2007). "Human organic anion transporter 1B1 and 1B3 function as bidirectional carriers and do not mediate GSH-bile acid cotransport". Am. J. Physiol. Gastrointest. Liver Physiol. 293 (1): G271–8. doi:10.1152/ajpgi.00075.2007. PMID17412826.
Treiber A, Schneiter R, Häusler S, Stieger B (2007). "Bosentan is a substrate of human OATP1B1 and OATP1B3: inhibition of hepatic uptake as the common mechanism of its interactions with cyclosporin A, rifampicin, and sildenafil". Drug Metab. Dispos. 35 (8): 1400–7. doi:10.1124/dmd.106.013615. PMID17496208.
Muto M, Onogawa T, Suzuki T, et al. (2007). "Human liver-specific organic anion transporter-2 is a potent prognostic factor for human breast carcinoma". Cancer Sci. 98 (10): 1570–6. doi:10.1111/j.1349-7006.2007.00570.x. PMID17760952.