Cancer Cell Lines with Decreased Drug Accumulation (cMOAT) Gene Is Overexpressed in Cisplatin-resistant Human A Human Canalicular Multispecific Organic Anion Transporter
نویسندگان
چکیده
By targeting the AlP binding conserved domain in three AlP binding cassette superfamily proteins (P-glycoprotein, multidrug resistance pro tein, and cystic fibrosis transmembrane regulator), we isolated the cDNA of a new AlP binding cassette superfamily that was specifically enhanced in a cisplatin-resistant human head and neck cancer KB cell line. A human clone homologous to rat cnnalicular multispecific organic anion trans. porter (cMOAT) was found and designated human cMOAT. Fluorescence in situ hybridization demonstrated the chromosomal locus of the gene on chromosome 10q24. The human cMOAT eDNA hybridized a 6.5-kb mRNA that was expressed 4to 6-fold higher by three cisplatin-resistant cell lines derived from various human tumors exhibiting decreased drug accumulation. Human cMOAT may function as a cellular cisplatin trans porter.
منابع مشابه
A human canalicular multispecific organic anion transporter (cMOAT) gene is overexpressed in cisplatin-resistant human cancer cell lines with decreased drug accumulation.
By targeting the ATP binding conserved domain in three ATP binding cassette superfamily proteins (P-glycoprotein, multidrug resistance protein, and cystic fibrosis transmembrane regulator), we isolated the cDNA of a new ATP binding cassette superfamily that was specifically enhanced in a cisplatin-resistant human head and neck cancer KB cell line. A human clone homologous to rat canalicular mul...
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By targeting the AlP binding conserved domain in three AlP binding cassette superfamily proteins (P-glycoprotein, multidrug resistance pro tein, and cystic fibrosis transmembrane regulator), we isolated the cDNA of a new AlP binding cassette superfamily that was specifically enhanced in a cisplatin-resistant human head and neck cancer KB cell line. A human clone homologous to rat cnnalicular mu...
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The canalicular multispecific organic anion transporter (cMOAT), also termed MRP2, is a recently identified ATP-binding cassette transporter. We previously established stable human cMOAT cDNA-transfected cells, LLC/cMOAT-1 from LLC-PK1 cells, and LLC/CMV cells that were transfected with an empty vector. We found that LLC/cMOAT-1 cells have increased resistance to vincristine (VCR), 7-ethyl-10-h...
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The expression of two members of the ATP-binding cassette family of transport proteins, P-glycoprotein (P-gp) and the canalicular multispecific organic anion transporter (cMOAT or Mrp2), was evaluated in renal brush-border membranes (BBM) and various rat tissues after cisplatin treatment. One administration of cisplatin (5 mg/kg) increased P-gp expression by >200-300% in renal BBM and in crude ...
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