Titanium alloy modified with anti-biofouling zwitterionic polymer to facilitate formation of bio-mineral layer

Miku Nishida, Tadashi Nakaji-Hirabayashi*, Hiromi Kitano, Yoshiyuki Saruwatari, Kazuyoshi Matsuoka

*この論文の責任著者

研究成果: ジャーナルへの寄稿学術論文査読

20 被引用数 (Scopus)

抄録

The surface of a titanium (Ti) alloy was modified with a self-assembled monolayer of poly(ethylene glycol) methacrylate phosphate (Phosmer PE). A zwitterionic monomer (carboxymethyl betaine, CMB) could be copolymerized with the surface-bound Phosmer PE due to a flexible linker between the Ti alloy surface and a methacryloyl group of Phosmer PE. The poly(CMB) (PCMB)-modified Ti alloy plate exhibited strong suppression of protein adsorption and cell adhesion, and induced approximately twice the amount of calcium (Ca2+) deposition as compared to the unmodified Ti alloy plate. The zwitterionic polymer-modified surfaces not only showed enhanced mineralization clusters creation and growth, but they were also highly non-responsive to biologically derived materials such as proteins and cells. Therefore, it is possible to easily form highly pure and rigid hydroxyapatite layers on Ti alloy surfaces without the incorporation of organic molecules such as proteins. The present surface modification technique and strategy can be applied to implantable orthopedic materials as a means of encouraging integration with host tissues, such as the thigh bone.

本文言語英語
ページ(範囲)302-310
ページ数9
ジャーナルColloids and Surfaces B: Biointerfaces
152
DOI
出版ステータス出版済み - 2017/04/01

ASJC Scopus 主題領域

  • バイオテクノロジー
  • 表面および界面
  • 物理化学および理論化学
  • コロイド化学および表面化学

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