Site-Specific PEGylation of Therapeutic Proteins

The use of proteins as therapeutics has a long history and is becoming ever more common in modern medicine. While the number of protein-based drugs is growing every year, significant problems still remain with their use. Among these problems are rapid degradation and excretion from patients, thus re...

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Main Authors: Jonathan K. Dozier, Mark D. Distefano
Format: Article
Language:English
Published: MDPI AG 2015-10-01
Series:International Journal of Molecular Sciences
Subjects:
Online Access:http://www.mdpi.com/1422-0067/16/10/25831
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author Jonathan K. Dozier
Mark D. Distefano
author_facet Jonathan K. Dozier
Mark D. Distefano
author_sort Jonathan K. Dozier
collection DOAJ
description The use of proteins as therapeutics has a long history and is becoming ever more common in modern medicine. While the number of protein-based drugs is growing every year, significant problems still remain with their use. Among these problems are rapid degradation and excretion from patients, thus requiring frequent dosing, which in turn increases the chances for an immunological response as well as increasing the cost of therapy. One of the main strategies to alleviate these problems is to link a polyethylene glycol (PEG) group to the protein of interest. This process, called PEGylation, has grown dramatically in recent years resulting in several approved drugs. Installing a single PEG chain at a defined site in a protein is challenging. Recently, there is has been considerable research into various methods for the site-specific PEGylation of proteins. This review seeks to summarize that work and provide background and context for how site-specific PEGylation is performed. After introducing the topic of site-specific PEGylation, recent developments using chemical methods are described. That is followed by a more extensive discussion of bioorthogonal reactions and enzymatic labeling.
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spelling doaj.art-00f5dd23221b4fdba2d5380fe196ccfc2022-12-22T03:37:30ZengMDPI AGInternational Journal of Molecular Sciences1422-00672015-10-011610258312586410.3390/ijms161025831ijms161025831Site-Specific PEGylation of Therapeutic ProteinsJonathan K. Dozier0Mark D. Distefano1Department of Chemistry, University of Minnesota, Minneapolis, MN 55455, USADepartment of Chemistry, University of Minnesota, Minneapolis, MN 55455, USAThe use of proteins as therapeutics has a long history and is becoming ever more common in modern medicine. While the number of protein-based drugs is growing every year, significant problems still remain with their use. Among these problems are rapid degradation and excretion from patients, thus requiring frequent dosing, which in turn increases the chances for an immunological response as well as increasing the cost of therapy. One of the main strategies to alleviate these problems is to link a polyethylene glycol (PEG) group to the protein of interest. This process, called PEGylation, has grown dramatically in recent years resulting in several approved drugs. Installing a single PEG chain at a defined site in a protein is challenging. Recently, there is has been considerable research into various methods for the site-specific PEGylation of proteins. This review seeks to summarize that work and provide background and context for how site-specific PEGylation is performed. After introducing the topic of site-specific PEGylation, recent developments using chemical methods are described. That is followed by a more extensive discussion of bioorthogonal reactions and enzymatic labeling.http://www.mdpi.com/1422-0067/16/10/25831chemical modificationenzymatic modificationPEGylationprotein PEGylationsite specific modificationtherapeutic proteins
spellingShingle Jonathan K. Dozier
Mark D. Distefano
Site-Specific PEGylation of Therapeutic Proteins
International Journal of Molecular Sciences
chemical modification
enzymatic modification
PEGylation
protein PEGylation
site specific modification
therapeutic proteins
title Site-Specific PEGylation of Therapeutic Proteins
title_full Site-Specific PEGylation of Therapeutic Proteins
title_fullStr Site-Specific PEGylation of Therapeutic Proteins
title_full_unstemmed Site-Specific PEGylation of Therapeutic Proteins
title_short Site-Specific PEGylation of Therapeutic Proteins
title_sort site specific pegylation of therapeutic proteins
topic chemical modification
enzymatic modification
PEGylation
protein PEGylation
site specific modification
therapeutic proteins
url http://www.mdpi.com/1422-0067/16/10/25831
work_keys_str_mv AT jonathankdozier sitespecificpegylationoftherapeuticproteins
AT markddistefano sitespecificpegylationoftherapeuticproteins