The multidrug resistance phenotype



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The multidrug resistance phenotype confers immunological resistance

Multidrug resistance (MDR), which is due, in part, to the overexpression of P-glycoprotein, confers resistance to a variety of natural product chemotherapeutic agents such as daunorubicin, vincristine, and colchicine. RV+ cells are a P-glycoprotein overexpressing variant of the HL60 myeloid leukemia cell line. In addition to classic MDR, RV+ cells displayed relative resistance to complement-med...

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Relationship of VP-16 to the classical multidrug resistance phenotype.

The classical multidrug resistance (MDR) phenotype is characterized by cross-resistance between a number of chemically unrelated drugs due to an increased efflux across the plasma membrane via a P-glycoprotein-mediated mechanism. The epipodophyllotoxin derivatives etoposide (VP-16) and teniposide (VM-26) are usually included among the drugs recognized by this MDR phenotype, and the MDR EHR2/DNR...

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Genetics of multidrug resistance: relationship of a cloned gene to the complete multidrug resistant phenotype.

Resistance to multiple chemotherapeutic agents remains the major cause of failure in cancer chemotherapy. Multidrug resistant cell lines developed in vitro have provided a useful model for analyzing this phenomenon. We describe a complementary DNA, lambda DR11, which is present in normal cells and overexpressed in multidrug resistant cell lines. We have placed this complementary DNA in an expre...

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Expression of bcl-xL can confer a multidrug resistance phenotype.

It has been suggested that genes that regulate apoptotic cell death may play an important role in determining the sensitivity of tumor cells to chemotherapy. We have recently cloned a member of the bcl-2 family, bcl-x. To test whether bcl-XL expression affects the sensitivity of tumor cells to chemotherapy, we have created stable cell lines overexpressing bcl-XL and have tested these cells for ...

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Multidrug-resistance phenotype and clinical responses to gemtuzumab ozogamicin.

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عنوان ژورنال: British Journal of Cancer

سال: 1988

ISSN: 0007-0920,1532-1827

DOI: 10.1038/bjc.1988.291