title: RNA interference-triggered reversal of ABCC2-dependent cisplatin resistance in human cancer cells.
abstract: The adenosine triphosphate binding cassette (ABC)-transporter ABCC2 (MRP2/cMOAT) can mediate resistance against the commonly used anticancer drugs cisplatin and paclitaxel. To overcome the ABCC2-depending drug resistance, two specific anti-ABCC2 small interfering RNAs (siRNAs) were designed for transient triggering of the gene-silencing RNA interference (RNAi) pathway in the cisplatin-resistant human ovarian carcinoma cell line A2780RCIS. Since both siRNAs showed biological activity, for stable inhibition of ABCC2 a corresponding short hairpin RNA (shRNA)-encoding expression vector was designed. By treatment of A2780RCIS cells with this construct, the expressions of the targeted ABCC2 encoding mRNA and transport protein were inhibited. These effects were accompanied by reversal of resistance against cisplatin and paclitaxel. Thus, the data demonstrate the utility of the analyzed RNAs as powerful laboratory tools and indicate that siRNA- and shRNA-mediated RNAi-based gene therapeutic approaches may be applicable in preventing and reversing ABCC2-depending drug resistance.
authors.affiliation: Institute of Pathology, Charité Campus Mitte, Charitéplatz 1, D-10117 Berlin, Germany.
authors.forename: Verena
authors.initials: V
authors.lastname: Materna
authors.forename: Alexandra
authors.initials: A
authors.lastname: Stege
authors.forename: Pawel
authors.initials: P
authors.lastname: Surowiak
authors.forename: Axel
authors.initials: A
authors.lastname: Priebsch
authors.forename: Hermann
authors.initials: H
authors.lastname: Lage
mesh_terms: D045744:Cell Line, Tumor; D002945:Cisplatin / Q000494:pharmacology* / Q000627:therapeutic use; D019008:Drug Resistance, Neoplasm / Q000235:genetics*; D005260:Female; D005786:Gene Expression Regulation; D006801:Humans; D026901:Membrane Transport Proteins / Q000235:genetics / Q000378:metabolism; D000089762:Multidrug Resistance-Associated Protein 2; D027425:ATP-Binding Cassette, Sub-Family C Proteins / Q000037:antagonists & inhibitors* / Q000235:genetics / Q000378:metabolism; D010051:Ovarian Neoplasms / Q000188:drug therapy / Q000235:genetics* / Q000378:metabolism; D034622:RNA Interference; D012333:RNA, Messenger / Q000235:genetics; D034741:RNA, Small Interfering / Q000235:genetics* / Q000627:therapeutic use
chemical_list: D002945:Cisplatin; D026901:Membrane Transport Proteins; D000089762:Multidrug Resistance-Associated Protein 2; D027425:ATP-Binding Cassette, Sub-Family C Proteins; D012333:RNA, Messenger; D034741:RNA, Small Interfering; C000715087:ABCC2 protein, human