title: Multidrug resistance protein expression of adult T-cell leukemia/lymphoma.
abstract: In adult T-cell leukemia/lymphoma (ATL), it is difficult to achieve remission and the reason for the resistance to chemotherapeutic agents may be linked to the presence of multidrug resistance (MDR) proteins. Lung resistance-related protein (LRP), multidrug resistance-associated protein and P-glycoprotein are three MDR proteins which we examined in ATL cells using multiparametric flow cytometry and real-time RT-PCR. LRP was highly expressed and suppressing LRP function increased doxorubicin accumulation in nuclei. This indicates LRP may be contributing to drug resistance in ATL patients, and the suppression of LRP function could be a new strategy for ATL treatment.
authors.affiliation: Department of Hematology, Tokyo Women's Medical University, Tokyo, Japan.
authors.forename: Takeshi
authors.initials: T
authors.lastname: Yasunami
authors.forename: Yan-hua
authors.initials: YH
authors.lastname: Wang
authors.forename: Kazue
authors.initials: K
authors.lastname: Tsuji
authors.forename: Minoko
authors.initials: M
authors.lastname: Takanashi
authors.forename: Yasuaki
authors.initials: Y
authors.lastname: Yamada
authors.forename: Toshiko
authors.initials: T
authors.lastname: Motoji
mesh_terms: D020168:ATP Binding Cassette Transporter, Subfamily B, Member 1 / Q000235:genetics / Q000378:metabolism*; D000328:Adult; D000368:Aged; D000903:Antibiotics, Antineoplastic / Q000494:pharmacology; D004317:Doxorubicin / Q000494:pharmacology; D018432:Drug Resistance, Multiple; D019008:Drug Resistance, Neoplasm; D005260:Female; D005434:Flow Cytometry; D015973:Gene Expression Regulation, Leukemic; D015972:Gene Expression Regulation, Neoplastic; D006801:Humans; D015459:Leukemia-Lymphoma, Adult T-Cell / Q000235:genetics / Q000378:metabolism*; D008297:Male; D008875:Middle Aged; D027425:ATP-Binding Cassette, Sub-Family C Proteins / Q000235:genetics / Q000378:metabolism*; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D012334:RNA, Neoplasm / Q000235:genetics / Q000378:metabolism; D020133:Reverse Transcriptase Polymerase Chain Reaction; D014407:Tumor Cells, Cultured; D020394:Vault Ribonucleoprotein Particles / Q000235:genetics / Q000378:metabolism*; D000099187:Major Vault Protein
chemical_list: D020168:ATP Binding Cassette Transporter, Subfamily B, Member 1; D000903:Antibiotics, Antineoplastic; D004317:Doxorubicin; D027425:ATP-Binding Cassette, Sub-Family C Proteins; D012333:RNA, Messenger; D012334:RNA, Neoplasm; D020394:Vault Ribonucleoprotein Particles; D000099187:Major Vault Protein; C421109:multidrug resistance-associated protein 1