Control of cellular activity of osteoblastic cells with microtopography of biphasic calcium phosphate scaffolds
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- OKADA Shinnosuke
- School of Integrated Design Engineering, Graduate School of Science and Technology, Keio University
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- OAKI Yuya
- School of Integrated Design Engineering, Graduate School of Science and Technology, Keio University
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- KOMOTORI Jun
- School of Integrated Design Engineering, Graduate School of Science and Technology, Keio University
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- IMAI Hiroaki
- School of Integrated Design Engineering, Graduate School of Science and Technology, Keio University
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We studied the activity of osteoblastic cells on biphasic calcium phosphate (BCP) containing ca. 50 wt % hydroxyapatite and ca. 50 wt % β-tricalcium phosphate. The influence of the microtopography on the cellular activity was investigated by using three kinds of BCP scaffolds, which were composed of densely packed domains of 3–5 µm in size (dense-BCP), a porous framework of ∼1 µm in width (micro-BCP), and aggregated particles of ∼100 nm in diameter (nano-BCP). Basically, stable adhesion of the cells was achieved with defined focal adhesions on the BCP scaffolds regardless of their topography. The alkaline phosphatase (ALP) activity in the initial stage of the adhesion was more enhanced on micro- and nano-BCPs than it was on dense-BCPs due to the presence of a large number of calcium ions eluted from small grains in the micro- and nano-BCPs. However, the proliferation and the ALP activity were suppressed in the long-term culture on nano-BCP because of the limitation of the domain area for the formation of focal adhesions. Therefore, the cellular activity was successfully controlled with the surface microtopography of the scaffolds. The microstructured surface providing a sufficient domain area and essential ions would be suitable as a scaffold for osteoblastic cells.
収録刊行物
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- Journal of the Ceramic Society of Japan
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Journal of the Ceramic Society of Japan 119 (1392), 635-639, 2011
公益社団法人 日本セラミックス協会
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詳細情報 詳細情報について
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- CRID
- 1390282680264154496
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- NII論文ID
- 130000971773
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- NII書誌ID
- AA12229489
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- ISSN
- 13486535
- 18820743
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- NDL書誌ID
- 11175681
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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