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Sustained gastrointestinal activity of dendronized polymer–enzyme conjugates

Methods to stabilize and retain enzyme activity in the gastrointestinal tract are investigated rarely because of the difficulty of protecting proteins from an environment that has evolved to promote their digestion. Preventing the degradation of enzymes under these conditions, however, is critical f...

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Published in:Nature chemistry 2013-07, Vol.5 (7), p.582-589
Main Authors: Fuhrmann, Gregor, Grotzky, Andrea, Lukić, Ružica, Matoori, Simon, Luciani, Paola, Yu, Hao, Zhang, Baozhong, Walde, Peter, Schlüter, A. Dieter, Gauthier, Marc A., Leroux, Jean-Christophe
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creator Fuhrmann, Gregor
Grotzky, Andrea
Lukić, Ružica
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Gauthier, Marc A.
Leroux, Jean-Christophe
description Methods to stabilize and retain enzyme activity in the gastrointestinal tract are investigated rarely because of the difficulty of protecting proteins from an environment that has evolved to promote their digestion. Preventing the degradation of enzymes under these conditions, however, is critical for the development of new protein-based oral therapies. Here we show that covalent conjugation to polymers can stabilize orally administered therapeutic enzymes at different locations in the gastrointestinal tract. Architecturally and functionally diverse polymers are used to protect enzymes sterically from inactivation and to promote interactions with mucin on the stomach wall. Using this approach the in vivo activity of enzymes can be sustained for several hours in the stomach and/or in the small intestine. These findings provide new insight and a firm basis for the development of new therapeutic and imaging strategies based on orally administered proteins using a simple and accessible technology. Methods for stabilizing enzymatic activity in the gastrointestinal tract are rarely investigated because of the difficulty in protecting proteins from an environment that promotes their digestion. Now, functionally diverse polymers have been conjugated to therapeutic enzymes, which lead to a substantial enhancement of their in vivo activity in the gastrointestinal tract.
doi_str_mv 10.1038/nchem.1675
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ispartof Nature chemistry, 2013-07, Vol.5 (7), p.582-589
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subjects 639/638/455/952
639/638/92/603
639/638/92/607
Analytical Chemistry
Animals
Biochemistry
Chemistry
Chemistry/Food Science
Dendrimers
Enzymatic activity
Enzymes
Enzymes - chemistry
Enzymes - pharmacology
Gastrointestinal tract
Gastrointestinal Tract - drug effects
Inactivation
Inorganic Chemistry
Organic Chemistry
Physical Chemistry
Polymers
Polymers - chemistry
Polymers - pharmacology
Proteins
Rats
Small intestine
Stomach
title Sustained gastrointestinal activity of dendronized polymer–enzyme conjugates
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