Volume 43, Issue 12 pp. 1516-1520
Communication

Site-Specific Introduction of Sialic Acid into Insulin

Masaaki Sato

Masaaki Sato

Division of Biological Sciences, Graduate School of Science, Frontier Research Center for Post-Genomic Science and Technology, Hokkaido University, Kita 21 Nishi 11, Sapporo 001-0021, Japan, Fax: (+81) 11-706-9042

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Reiko Sadamoto Dr.

Reiko Sadamoto Dr.

Shionogi Laboratory of Biomolecular Chemistry, Division of Biological Science, Graduate School of Science, Frontier Research Center for Post-Genomic Science and Technology, Hokkaido University, Kita 21 Nishi 11, Sapporo 001-0021, Japan

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Kenichi Niikura Dr.

Kenichi Niikura Dr.

Division of Biological Sciences, Graduate School of Science, Frontier Research Center for Post-Genomic Science and Technology, Hokkaido University, Kita 21 Nishi 11, Sapporo 001-0021, Japan, Fax: (+81) 11-706-9042

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Kenji Monde Dr.

Kenji Monde Dr.

Division of Biological Sciences, Graduate School of Science, Frontier Research Center for Post-Genomic Science and Technology, Hokkaido University, Kita 21 Nishi 11, Sapporo 001-0021, Japan, Fax: (+81) 11-706-9042

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Hirosato Kondo Dr.

Hirosato Kondo Dr.

Discovery Research Laboratories, Shionogi & Co., Ltd., Osaka 553-0002, Japan

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Shin-Ichiro Nishimura Prof.

Shin-Ichiro Nishimura Prof.

Division of Biological Sciences, Graduate School of Science, Frontier Research Center for Post-Genomic Science and Technology, Hokkaido University, Kita 21 Nishi 11, Sapporo 001-0021, Japan, Fax: (+81) 11-706-9042

Japan Bioindustry Association, Sapporo 060-0810, Japan

National Insutitute of Advanced Industrial Science and Technology (AIST), Sapporo 062-8517, Japan

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First published: 09 March 2004
Citations: 37

This work was supported partly by a grant for “Research and Development on Glycocluster Controlling Biomolecules” from the New Energy and Industrial Technology Development Organization (NEDO). M.S. would like to thank Mr. A. Toda, Dr. K. Yamada, Dr. K. Iwata, Mr. T. Ohta, and Dr. H. Nakagawa for helpful discussions.

Graphical Abstract

More gain, less pain: A new long-acting insulin (see structure) was created by the enzymatic introduction of sialyllactose into mutant insulins. The glycosylation site was introduced into the insulin by point mutation without loss of biological activity. The experimental results with mice clearly demonstrated that the introduction of a sialic acid residue is crucial in prolonging glucose-lowering activity in the blood.

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