Journal
CELLULAR AND MOLECULAR LIFE SCIENCES
Volume 60, Issue 1, Pages 21-37Publisher
SPRINGER BASEL AG
DOI: 10.1007/s000180300002
Keywords
drug delivery; liposome; nanocapsule; nanoparticle; nanosphere; poly(ethylene glycol); polymer; targeting
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Colloidal drug carriers such as liposomes and nanoparticles are able to modify the distribution of an associated substance. They can therefore be used to improve the therapeutic index of drugs by increasing their efficacy and/or reducing their toxicity. If these delivery systems are carefully designed with respect to the target and route of administration, they may provide one solution to some of the delivery problems posed by new classes of active molecules such as peptides, proteins, genes, and oligonucleotides. They may also extend the therapeutic potential of established drugs such as doxorubicin and amphotericin B. This article discusses the use of colloidal, particulate carrier systems (25 nm to 1 mum in diameter) in such applications. In particular, systems which show diminished uptake by mononuclear phagocytes are described. Specific targeting of carriers to particular tissues or cells is also considered.
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