Lipid-Based Nanoparticulate Systems for the Delivery of Anti-Cancer Drug Cocktails: Implications on Pharmacokinetics and Drug Toxicities

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Abstract:

The use of drug cocktails has become a widely adopted strategy in clinical cancer therapy. Cytotoxic drug cocktails are often administered based on maximum tolerated dose (MTD) of each agent, with the belief of achieving maximum cell kill through tolerable toxicity level. Yet, MTD administration may not have fully captured the therapeutic synergism that exists among the individual agents in the drug cocktail, as the response to a cocktail regimen, that is, whether the effect is synergistic or not, could be highly sensitive to the concentration ratios of the individual drugs at the site of action. It is important to realize that the inherently different pharmacokinetic profiles of the individual agents could have significant influence on the response to an anti-cancer drug cocktail by dictating the amount of the individual agents reaching the tumor site and therefore the concentration ratios. Furthermore, the individual agents may have unfavorable pharmacokinetic interactions that add to the difficulty in determining the therapeutic and/or toxicological effects of the drug cocktail. In this review, we will focus on how lipid-based nanoparticulate systems could address the above issues associated with anticancer drug cocktails. Specifically, we will highlight the use of liposome systems as the means to control and coordinate the delivery of various anti-cancer drug cocktails, encompassing conventional chemotherapeutics, chemosensitizing agents and molecularly targeted agents.





Keywords: Cancer; drug combination; liposomes; nanotechnology; pharmacokinetics; synergism

Document Type: Research Article

DOI: http://dx.doi.org/10.2174/138920009790274531

Publication date: October 1, 2009

More about this publication?
  • Current Drug Metabolism aims to cover all the latest and outstanding developments in drug metabolism and disposition. The journal serves as an international forum for the publication of timely reviews in drug metabolism. Current Drug Metabolism is an essential journal for academic, clinical, government and pharmaceutical scientists who wish to be kept informed and up-to-date with the latest and most important developments. The journal covers the following areas:

    In vitro systems including CYP-450; enzyme induction and inhibition; drug-drug interactions and enzyme kinetics; pharmacokinetics, toxicokinetics, species scaling and extrapolations; P-glycoprotein and transport carriers; target organ toxicity and interindividual variability; drug metabolism and disposition studies; extrahepatic metabolism; phase I and phase II metabolism; recent developments for the identification of drug metabolites and adducts.
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