Volume 15, Issue 1 pp. 52-62
Full Paper

Non-Covalent Photo-Patterning of Gelatin Matrices Using Caged Collagen Mimetic Peptides

Yang Li

Yang Li

Department of Bioengineering, University of Utah, 36 S. Wasatch Drive, 3100 SMBB, Salt Lake City, Utah, 84112 USA

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Boi Hoa San

Boi Hoa San

Department of Bioengineering, University of Utah, 36 S. Wasatch Drive, 3100 SMBB, Salt Lake City, Utah, 84112 USA

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Julian L. Kessler

Julian L. Kessler

Department of Bioengineering, University of Utah, 36 S. Wasatch Drive, 3100 SMBB, Salt Lake City, Utah, 84112 USA

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Jin Hwan Kim

Jin Hwan Kim

Department of Bioengineering, University of Utah, 36 S. Wasatch Drive, 3100 SMBB, Salt Lake City, Utah, 84112 USA

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Qingguo Xu

Qingguo Xu

Center for Nanomedicine, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland, 21231 USA

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Justin Hanes

Justin Hanes

Center for Nanomedicine, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland, 21231 USA

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Seungju Michael Yu

Corresponding Author

Seungju Michael Yu

Department of Bioengineering, University of Utah, 36 S. Wasatch Drive, 3100 SMBB, Salt Lake City, Utah, 84112 USA

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First published: 04 December 2014
Citations: 26

Abstract

To address the downside of conventional photo-patterning which can alter the chemical composition of protein scaffolds, we developed a non-covalent photo-patterning strategy for gelatin (denatured collagen) hydrogels that utilizes UV activated triple helical hybridization of caged collagen mimetic peptide (caged CMP). Here we present 2D and 3D photo-patterning of gelatin hydrogels enabled by the caged CMP derivatives, as well as creation of concentration gradients of CMPs. CMP's specificity for binding to gelatin allows patterning of almost any synthetic or natural gelatin-containing matrix, such as gelatin-methacrylate hydrogels and corneal tissues. This is a radically new tool for immobilizing drugs to natural tissues and for functionalizing scaffolds for complex tissue formation.mabi201400436-gra-0001

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