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P-Glycoproteins and Multidrug Resistance

Annual Review of Pharmacology and Toxicology, 1996
Multidrug resistance represents a major obstacle in the successful therapy of neoplastic diseases. Studies have demonstrated that this form of drug resistance occurs both in cultured tumor cell lines as well as in human cancers. P-glycoprotein appears to play an important role in such cells by acting as an energy-dependent efflux pump to remove various
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Bromocriptine Modulates P-Glycoprotein Function

Biochemical and Biophysical Research Communications, 1998
The multidrug resistance (MDR)-associated P-glycoprotein (P-gp) is a membrane transporter which carries, at the expense of MgATP hydrolysis, many amphiphilic molecules, such as the MDR-related cytotoxic drugs vincristine and vinblastine, and the MDR-reversing agents verapamil and progesterone.
S, Orlowski   +3 more
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Herbal Modulation of P‐Glycoprotein

Drug Metabolism Reviews, 2004
P-glycoprotein (Pgp) is a 170 kDa phosphorylated glycoprotein encoded by human MDR1 gene. It is responsible for the systemic disposition of numerous structurally and pharmacologically unrelated lipophilic and amphipathic drugs, carcinogens, toxins, and other xenobiotics in many organs, such as the intestine, liver, kidney, and brain.
Zhou, Shufeng   +2 more
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The P-glycoprotein multidrug transporter

Essays in Biochemistry, 2011
Pgp (P-glycoprotein) (ABCB1) is an ATP-powered efflux pump which can transport hundreds of structurally unrelated hydrophobic amphipathic compounds, including therapeutic drugs, peptides and lipid-like compounds. This 170 kDa polypeptide plays a crucial physiological role in protecting tissues from toxic xenobiotics and endogenous metabolites, and also
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The multidrug resistance P-glycoprotein

Current Opinion in Cell Biology, 1993
P-glycoprotein plays an important role in the resistance of cancers to chemotherapy. Thus, an understanding of the mechanism by which it functions, and its 'normal' physiological role, is of clinical relevance as well as intrinsic interest. Considerable progress towards this goal has been made in the last year or so.
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Measurement of P-glycoprotein Function

2003
The MDR1-encoded P-glycoprotein (Pgp), when overexpressed in tumor cells, confers resistance to many clinically important classes of anticancer drugs. This phenomenon is called multidrug resistance (MDR). The finding that this gene was expressed in many types of human cancers has stimulated many studies into the relevance of this protein for clinical ...
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P-glycoprotein

RCSB Protein Data Bank, 2010
R. Hamish McAllister-Williams   +199 more
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Molecular biology of P-glycoprotein

1991
The molecular genetic characterization of MDR human, mouse, and hamster P-glycoprotein genes has identified several elements that may contribute to the diversity in multidrug-resistance phenotype associated with P-glycoprotein expression. First, spontaneous mutations within the MDR genes may alter the relative affinity of P-glycoprotein for certain ...
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