Development of a practical small-scale circulation bioreactor and application to a drug metabolism simulator

Hiroyuki Ijima, Yasuo Kakeya, Takahiro Ogata, Takanori Sakai

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

We developed an easy-to-use, small-scale circulation-type bioreactor system that enables the simultaneous evaluation of many specimens. Medium flow was generated by a magnetic stirrer in this system. Primary rat hepatocytes formed a monolayer, and there were no morphological differences between cells in circulation and stationary cultures. The mitochondrial activity of hepatocytes in the circulation culture was 23% lower than that in the stationary culture after 2 days of culture. On the other hand, albumin production activity in the circulation culture after 2 days of culture was 1.4 times higher than that in the stationary culture. Albumin production activity per cell in the circulation culture was 1.9 times higher than that in the stationary culture after 2 days of culture. In addition, lidocaine metabolism rate per cell in the circulation culture was 1.3 times higher than that in the stationary culture. The lidocaine clearance of the circulation culture in our circulation-type bioreactor was 1.3 times higher than that of the stationary culture. It was shown that this bioreactor is suitable for the expression of the liver-specific functions of primary rat hepatocytes. Therefore, we can expect that this circulation-type bioreactor system will be a practical drug metabolism simulator. Crown

Original languageEnglish
Pages (from-to)292-296
Number of pages5
JournalBiochemical Engineering Journal
Volume44
Issue number2-3
DOIs
Publication statusPublished - May 15 2009
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Environmental Engineering
  • Bioengineering
  • Biomedical Engineering

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