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Unexpected Reactions by In Vivo Applications of PEGylated Liposomes

  • Tatsuhiro Ishida
  • Hiroshi Kiwada
Chapter
Part of the Nanostructure Science and Technology book series (NST)

Abstract

PEGylated liposome, a liposome coated with polyethylene glycol (PEG), is understood to be biologically inert and, therefore, a suitable vehicle for in vivo applications. The most successful example is the doxorubicin-containing PEGylated liposome, known under the commercial name Doxil/Caelyx for cancer therapy. However, several researchers have found evidence that unexpected immune responses occur even to such polymer-coated liposomes after intravenous injection not only in animals but also in humans. An understanding of the immunological and pathological factors that control the pharmacokinetic and biological behavior of PEGylated liposomes is crucial for the design and safety of a system with optimal therapeutic and/or diagnostic performance. In this study, the interaction of PEGylated liposomes within the biological milieu following parenteral administration is discussed.

Keywords

Hypersensitivity Reaction Complement Activation Liposomal Formulation Acute Reaction Acute Side Effect 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

We thank Dr. James L. McDonald for his helpful advice in writing the English manuscript.

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© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  1. 1.Department of Pharmacokinetics and Biopharmaceutics, Subdivision of Biopharmaceutical Sciences, Institute of Health BiosciencesThe University of TokushimaTokushimaJapan

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