Formation of Multi-Channel Collagen Gels Investigated Using Particle Tracking Microrheology

Junta Yonemoto, Yasuyuki Maki, Isabel Koh, Kazuya Furusawa, Masahiko Annaka

研究成果: Contribution to journalArticle査読

抄録

Collagen is one of the most common materials used to form scaffolds for tissue engineering applications. The multi-channel collagen gel (MCCG) obtained by the dialysis of an acidic collagen solution in a neutral buffer solution has a unique structure, with many capillaries of diameters several tens to a few hundred micrometers, and could be a potential candidate as a biomimetic scaffold for three-dimensional tissue engineering. In the present study, the formation of MCCG was investigated byin siturheological measurements based on a particle tracking method (particle tracking microrheology, PTM). PTM enabled us to measure changes in the rheological properties of collagen solutions under the continuous exchange of substances during dialysis. When an observation plane was set perpendicular to the direction of gel growth, we first observed convectional flow of the collagen solution, followed by phase separation and gelation. We showed that the structure of the MCCG originated from the transient structure formed during the initial stage of viscoelastic phase separation and was fixed by the subsequent gelation.

本文言語英語
ページ(範囲)3819-3826
ページ数8
ジャーナルBiomacromolecules
22
9
DOI
出版ステータス出版済み - 9 13 2021

All Science Journal Classification (ASJC) codes

  • バイオエンジニアリング
  • 生体材料
  • ポリマーおよびプラスチック
  • 材料化学

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