Biological and Pharmaceutical Bulletin
Online ISSN : 1347-5215
Print ISSN : 0918-6158
ISSN-L : 0918-6158
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Anti-polyethyleneglycol Antibody Response to PEGylated Substances
Tatsuhiro IshidaHiroshi Kiwada
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2013 Volume 36 Issue 6 Pages 889-891

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Abstract

In contrast to the general assumption that polyethyleneglycol (PEG)-conjugated substances lack immunogenicity and antigenic, it has been reported that they can elicit antibodies against PEG (mainly anti-PEG immunoglobulin M (IgM)). In patients, the presence of anti-PEG antibodies may limit therapeutic efficacy of PEGylated substances as a consequence of inducing rapid clearance of and neutralizing biological activity of the substances. Here, we introduce specific examples of PEGylated substances including several PEGylated proteins and PEGylated particles (PEGylated nanocarriers) which induce anti-PEG antibody responses. Finally, we emphasize that the immunogenicity of PEGylated substances should be tested in the development stage and that the titer of anti-PEG antibodies in patients should be pre-screened and monitored prior to and throughout a course of treatment with a PEGylated substance.

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© 2013 The Pharmaceutical Society of Japan
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