Volume 13, Issue 1 pp. 93-101

Migration of keratinocytes is impaired on glycated collagen I

Keisuke Morita MD

Corresponding Author

Keisuke Morita MD

From the Department of Dermatology a , Graduate School of Medical Sciences, Kyushu University; Department of Dermatology b , Fukuoka Red Cross Hospital, Fukuoka; and Department of Biochemistry c , Kumamoto University School of Medicine, Kumamoto, Japan.

Keisuke Morita, MD, Department of Dermatology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashiku, Fukuoka 812-8582, Japan. Email: [email protected].Search for more papers by this author
a Kazunori Urabe

Kazunori Urabe

From the Department of Dermatology a , Graduate School of Medical Sciences, Kyushu University; Department of Dermatology b , Fukuoka Red Cross Hospital, Fukuoka; and Department of Biochemistry c , Kumamoto University School of Medicine, Kumamoto, Japan.

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a Yoichi Moroi

Yoichi Moroi

From the Department of Dermatology a , Graduate School of Medical Sciences, Kyushu University; Department of Dermatology b , Fukuoka Red Cross Hospital, Fukuoka; and Department of Biochemistry c , Kumamoto University School of Medicine, Kumamoto, Japan.

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a Tetsuya Koga

Tetsuya Koga

From the Department of Dermatology a , Graduate School of Medical Sciences, Kyushu University; Department of Dermatology b , Fukuoka Red Cross Hospital, Fukuoka; and Department of Biochemistry c , Kumamoto University School of Medicine, Kumamoto, Japan.

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b Ryuji Nagai

Ryuji Nagai

From the Department of Dermatology a , Graduate School of Medical Sciences, Kyushu University; Department of Dermatology b , Fukuoka Red Cross Hospital, Fukuoka; and Department of Biochemistry c , Kumamoto University School of Medicine, Kumamoto, Japan.

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c Seiko Horiuchi

Seiko Horiuchi

From the Department of Dermatology a , Graduate School of Medical Sciences, Kyushu University; Department of Dermatology b , Fukuoka Red Cross Hospital, Fukuoka; and Department of Biochemistry c , Kumamoto University School of Medicine, Kumamoto, Japan.

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c Masutaka Furue

Masutaka Furue

From the Department of Dermatology a , Graduate School of Medical Sciences, Kyushu University; Department of Dermatology b , Fukuoka Red Cross Hospital, Fukuoka; and Department of Biochemistry c , Kumamoto University School of Medicine, Kumamoto, Japan.

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a
First published: 17 January 2005
Citations: 25

Abstract

Advanced glycation end products are the chemical modification of proteins induced by sugars in a hyperglycemic condition. Extracellular matrix proteins are prominent targets of nonenzymatic glycation because of their slow turnover rates. The aim of this study was to investigate the influence of nonenzymatic glycation of type I collagen on the migration of keratinocytes. The migration of keratinocytes was dramatically promoted on native type I collagen-coated dishes compared with that on uncoated dishes. When type I collagen was glycated with glycolaldehyde, large amounts of advanced glycation end products were produced; the glycated collagen I-coated dishes did not promote the migration of keratinocytes. Glycated collagen I did not affect the proliferative capacity of keratinocytes. However, the adhesion of keratinocytes to glycated collagen I was profoundly diminished in a glycation intensity-dependent manner. α2β1 integrin is responsible for the migration and adhesion of keratinocytes to type I collagen. Pretreatment with glycated collagen I did not affect the expression level or functional activity of α2β1 integrin on keratinocytes. These findings suggest that in the presence of glycated collagen I, keratinocytes lose their adhesive and migratory abilities. As the glycation did not modify the α2β1 integrin on keratinocytes, it is suggested that glycation may diminish the binding capacity of type I collagen.

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