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Diabetes and O-GlcNAcylation

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Glycoscience: Biology and Medicine

Abstract

O-Linked β-N-acetylglucosamine modification (O-GlcNAcylation) of proteins is a dynamic posttranslational modification which occurs in the nucleus and the cytoplasm. Increase of O-GlcNAcylation is involved in the glucose toxicity and chronic hyperglycemia-induced insulin resistance, a major hallmark of type 2 diabetes. O-GlcNAcylation is regulated by the concerted actions of O-GlcNAc transferase (OGT) and O-GlcNAcase (OGA). Studies on the overexpression of OGT and knockdown of OGA demonstrate that elevation of O-GlcNAcylation through the hexosamine biosynthetic pathway plays an important role in the development of glucose resistance and diabetic complications. This chapter overviews the role of O-GlcNAc in the type 2 diabetes and diabetic complications and the methods of analysis of O-GlcNAcylation in diabetes.

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Correspondence to Yoshihiro Akimoto .

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© 2015 Springer Japan

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Akimoto, Y., Miura, Y., Endo, T., Kawakami, H., Hart, G.W. (2015). Diabetes and O-GlcNAcylation. In: Taniguchi, N., Endo, T., Hart, G., Seeberger, P., Wong, CH. (eds) Glycoscience: Biology and Medicine. Springer, Tokyo. https://doi.org/10.1007/978-4-431-54841-6_84

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