Perfusable system using porous collagen gel scaffold actively provides fresh culture media to a cultured 3d tissue

Chikahiro Imashiro, Kai Yamasaki, Ryu Ichiro Tanaka, Yusuke Tobe, Katsuhisa Sakaguchi, Tatsuya Shimizu

Research output: Contribution to journalArticlepeer-review

Abstract

Culturing three-dimensional (3D) tissues with an appropriate microenvironment is a critical and fundamental technology in broad areas of cutting-edge bioengineering research. In addition, many technologies have engineered tissue functions. However, an effective system for transporting nutrients, waste, or oxygen to affect the functions of cell tissues has not been reported. In this study, we introduce a novel system that employs diffusion and convection to enhance transportation. To demonstrate the concept of the proposed system, three layers of normal human dermal fibroblast cell sheets are used as a model tissue, which is cultured on a general dish or porous collagen scaffold with perfusable channels for three days with and without the perfusion of culture media in the scaffold. The results show that the viability of the cell tissue was improved by the developed system. Furthermore, glucose consumption, lactate production, and oxygen transport to the tissues were increased, which might improve the viability of tissues. However, mechanical stress in the proposed system did not cause damage or unintentional functional changes in the cultured tissue. We believe that the introduced culturing system potentially suggests a novel standard for 3D cell cultures.

Original languageEnglish
Article number6780
JournalInternational journal of molecular sciences
Volume22
Issue number13
DOIs
Publication statusPublished - 2021 Jul 1

Keywords

  • 3D tissue culture
  • Cell sheet technology
  • Convection-diffusion equation
  • Perfusion system

ASJC Scopus subject areas

  • Catalysis
  • Molecular Biology
  • Spectroscopy
  • Computer Science Applications
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

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