Multidrug resistance-associated polypeptide

Chemistry: molecular biology and microbiology – Animal cell – per se ; composition thereof; process of...

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4352523, 4353201, 435 691, 435366, 4352542, 536 235, 536 231, C12N 1510, C12N 1563, C12N 1512

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059941308

ABSTRACT:
Compositions and methods are disclosed for improving the effectiveness of a chemotherapeutic regimen to eradicate multidrug-resistant transformed cells from the body of a mammal, preferably from the body of a human. The present disclosure capitalizes on the discovery of a novel multidrug-resistance associated protein (MRP), herein designated MRP-.beta.. The disclosed compositions include MRP-.alpha. nucleic acids, including probes and antisense oligonucleotides, MRP-.beta. polypeptides and antibodies, MRP-.beta. expressing host cells, and non-human mammals transgenic or nullizygous for MRP-.beta.. The disclosed methods include methods for attenuating aberrant MRP-.beta. gene expression, protein production and/or protein function. In addition, methods are disclosed for identifying and using a modulator, such as an inhibitor, of MRP-.beta.. Preferably, the modulator is a small molecule.

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Genbank.RTM. Accession No. H17207 for ym42a06.rl Soares infant brain 1NIB Homo sapiens cDNA clone 50857 5' similar to SP:MRP.sub.- Human P33527 Multidrug Resistance-Associated; mRNA sequence.

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