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A Journal on Nuclear Medicine and Molecular Imaging
Affiliated to the and to the International Research Group of Immunoscintigraphy
Indexed/Abstracted in: Current Contents/Clinical Medicine, EMBASE, PubMed/MEDLINE, Science Citation Index (SciSearch), Scopus
Impact Factor 2,413
NOVEL METHODS OF ALTERING PHARMACOKINETICS IN RADIOPHARMACEUTICAL DESIGN
Guest Editor: Hnatowich D.
Harrington K. J. 1, Mubashar M. 2, Peters A. M. 2
1 Cancer Research UK Laboratory of Targetted Therapy Centre for Cell and Molecular Biology Institute of Cancer Research, London, UK
2 Department of Nuclear Medicine, Addenbrooke’s Hospital Cambridge, UK
Radiolabelled macromolecules such as liposomes and monoclonal antibodies (Mab) are attractive agents for tumour-targetting studies. In addition to their potential diagnostic role, they can also provide vital information on the targetting capacity of therapeutic agents. Certainly in the case of liposome development, this ability to track the pharmacokinetics and biodistribution of the agents in a non-invasive fashion has assisted the design and application of therapeutic liposomal agents. A significant limitation of unmodified liposomes and Mab is their tendency to be cleared rapidly from the circulation. The use of polyethylene glycol (PEG) in the formulation of these agents has the capacity to alter their biological behaviour in such a way as to improve their ability to target tumours. In this paper we review the data relating to the use of PEG-modified liposomes and Mab in the context of nuclear medicine studies.