title: Effects of Lewis Y antigen on the gene expression of multiple drug resistance-associated proteins in human ovarian cancer RMG-I-H cells.
abstract: The effects of Lewis Y antigen on the gene expression of multiple drug resistance-associated proteins in human ovarian cancer RMG-I-H cells were unclear by now. In this study, we detected the gene expression of multiple drug resistance-associated proteins (MRP) in RMG-I-H cells and RMG-I-H cells treated with anti-Lewis Y monoclonal antibody to investigate the association between Lewis Y antigen and the gene expression of drug resistance-associated proteins. Compared with RMG-I cells, the expression of MRP1, MRP2, protein kinase C-alpha (PKC-alpha), and topoisomerase I (Topo I) mRNAs in RMG-I-H cells were significantly upregulated, while the MDR-1 mRNA was downregulated. Immunochemistry analyses indicated that the in vitro and in vivo expression levels of MDR-1 protein (P-gp) in RMG-I-H cells were significantly higher than those in RMG-I cells. After RMG-I-H cells were treated with anti-Lewis Y monoclonal antibody, the expression levels of MDR-1, MRP1, MRP2, PKC-alpha, and Topo I mRNAs gradually decreased with the prolongation of treatment duration. In contrast, no obvious changes were noted in the expression levels of these mRNAs in the non-treatment group. At 6 h after treatment, the relative levels of MDR-1, MRP1, MRP2, PKC-alpha, and Topo I mRNAs in the antibody treatment group were significantly lower than those in the non-treatment group. In conclusion, Lewis Y antigen is closely associated with regulating the gene expression of multiple drug resistance-associated proteins.
authors.affiliation: Department of Obstetrics and Gynecology, Shengjing Hospital, China Medical University, 110004, Shenyang, People's Republic of China. luping2999@yahoo.com.cn
authors.forename: Song
authors.initials: S
authors.lastname: Gao
authors.forename: Qing
authors.initials: Q
authors.lastname: Liu
authors.forename: Xinyan
authors.initials: X
authors.lastname: Wang
authors.forename: Bei
authors.initials: B
authors.lastname: Lin
authors.forename: Shulan
authors.initials: S
authors.lastname: Zhang
mesh_terms: D020168:ATP Binding Cassette Transporter, Subfamily B, Member 1 / Q000096:biosynthesis / Q000235:genetics; D018262:Adenocarcinoma, Clear Cell / Q000235:genetics / Q000378:metabolism / Q000473:pathology*; D000818:Animals; D000911:Antibodies, Monoclonal / Q000494:pharmacology; D045744:Cell Line, Tumor / Q000187:drug effects / Q000378:metabolism; D004264:DNA Topoisomerases, Type I / Q000096:biosynthesis / Q000235:genetics; D018432:Drug Resistance, Multiple / Q000235:genetics*; D019008:Drug Resistance, Neoplasm / Q000235:genetics*; D005260:Female; D005647:Fucosyltransferases / Q000502:physiology; D015972:Gene Expression Regulation, Neoplastic; D006801:Humans; D007983:Lewis Blood Group Antigens / Q000276:immunology / Q000502:physiology*; D051379:Mice; D008819:Mice, Nude; D000089762:Multidrug Resistance-Associated Protein 2; D027425:ATP-Binding Cassette, Sub-Family C Proteins / Q000096:biosynthesis / Q000235:genetics; D009363:Neoplasm Proteins / Q000096:biosynthesis* / Q000235:genetics; D009368:Neoplasm Transplantation; D010051:Ovarian Neoplasms / Q000235:genetics / Q000378:metabolism / Q000473:pathology*; D051571:Protein Kinase C-alpha / Q000096:biosynthesis / Q000235:genetics; D012333:RNA, Messenger / Q000096:biosynthesis / Q000235:genetics; D012334:RNA, Neoplasm / Q000096:biosynthesis / Q000235:genetics; D011993:Recombinant Fusion Proteins / Q000502:physiology; D014162:Transfection; D000097631:Galactoside 2-alpha-L-fucosyltransferase
chemical_list: D020168:ATP Binding Cassette Transporter, Subfamily B, Member 1; D000911:Antibodies, Monoclonal; D004264:DNA Topoisomerases, Type I; D005647:Fucosyltransferases; D007983:Lewis Blood Group Antigens; D000089762:Multidrug Resistance-Associated Protein 2; D027425:ATP-Binding Cassette, Sub-Family C Proteins; D009363:Neoplasm Proteins; D051571:Protein Kinase C-alpha; D012333:RNA, Messenger; D012334:RNA, Neoplasm; D011993:Recombinant Fusion Proteins; D000097631:Galactoside 2-alpha-L-fucosyltransferase; C000715087:ABCC2 protein, human; C094162:Lewis Y antigen; C496628:PRKCA protein, human; C528909:TOP1 protein, human; C421109:multidrug resistance-associated protein 1