Volume 102, Issue 1 pp. 204-214
Original Article

Improved hMSC functions on titanium coatings by type I collagen immobilization

Haiyong Ao

Haiyong Ao

Key Laboratory of Inorganic Coating Materials, Shanghai Institute of Ceramics, Chinese Academy of Science, 1295 Dingxi Road, Shanghai, China, 200050

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Youtao Xie

Youtao Xie

Key Laboratory of Inorganic Coating Materials, Shanghai Institute of Ceramics, Chinese Academy of Science, 1295 Dingxi Road, Shanghai, China, 200050

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Honglue Tan

Honglue Tan

Shanghai Key Laboratory of Orthopedic Implant, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China, 200011

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Xiaodong Wu

Xiaodong Wu

Department of Orthopedics, Changzheng Hospital, Second Military Medical University, China, 200003

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Guangwang Liu

Guangwang Liu

Department of Orthopedic Surgery, The Central Hospital of Xuzhou, Affiliated Hospital of Medical College of Southeast University, China, 221009

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An Qin

An Qin

Centre for Orthopedic Research, School of Surgery, The University of Western Australia, Western Australia, Australia

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Xuebin Zheng

Corresponding Author

Xuebin Zheng

Key Laboratory of Inorganic Coating Materials, Shanghai Institute of Ceramics, Chinese Academy of Science, 1295 Dingxi Road, Shanghai, China, 200050

Correspondence to: X. Zheng; e-mail: [email protected] or T. Tang; e-mail: [email protected]Search for more papers by this author
Tingting Tang

Tingting Tang

Shanghai Key Laboratory of Orthopedic Implant, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China, 200011

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First published: 10 May 2013
Citations: 55

Abstract

In this study, type I collagen was fixed onto plasma-sprayed porous titanium coatings by either adsorptive immobilization or covalent immobilization. Surface characterization by scanning electron microscopy (SEM), diffuse reflectance Fourier transform infrared spectroscopy (DR-FTIR) and X-ray photoelectron spectroscopy (XPS) confirmed the biochemical modification of the titanium coatings. The immobilizing effects of type I collagen, including variations in the amount and stability of collagen, were investigated using Sirius red staining. A greater amount of collagen was found on the covalently immobilized titanium coating, and higher stability was achieved relative to the absorptive immobilization surface. Human mesenchymal stem cells (hMSCs) were used to evaluate the cytocompatibility of the modified titanium coatings. Type I collagen immobilized on titanium coating led to enhance cell-material interactions and improved hMSC functions, such as attachment, proliferation, and differentiation. Interestingly, covalently immobilized collagen on titanium coating showed a greater capability to regulate the osteogenic activity of hMSCs than did absorbed collagen, which was explained in terms of the increased amount and higher stability of the covalently linked collagen. The type I collagen covalently immobilized titanium coatings with improved biological function may exhibit better osteointegration in clinical application. © 2013 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 102A: 204–214, 2014.

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