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Miniature auto‐perfusion bioreactor system with spiral microfluidic cell retention device

Authors :
Menglin Shang
Majid Ebrahimi Warkiani
Wen Yip Au
Chwee Teck Lim
Chia Chen Yu
Roger Rosche
Taehong Kwon
Zhangxing Lai
Jongyoon Han
Lu Yin
Source :
Biotechnology and Bioengineering. 118:1951-1961
Publication Year :
2021
Publisher :
Wiley, 2021.

Abstract

Medium perfusion is critical in maintaining high cell concentration in cultures. The conventional membrane filtration method for medium exchange has been challenged by the fouling and clogging of the membrane filters in long-term cultures. In this study, we present a miniature auto-perfusion system that can be operated inside a common-size laboratory incubator. The system is equipped with a spiral microfluidic chip for cell retention to replace conventional membrane filters, which fundamentally overcomes the clogging and fouling problem. We showed that the system supported continuous perfusion culture of Chinese hamster ovary (CHO) cells in suspension up to 14 days without cell retention chip replacement. Compared to daily manual medium change, 25% higher CHO cell concentration can be maintained at an average auto-perfusion rate of 196 ml/day in spinner flask at 70 ml working volume (2.8 VVD). The auto-perfusion system also resulted in better cell quality at high concentrations, in terms of higher viability, more uniform and regular morphology, and fewer aggregates. We also demonstrated the potential application of the system for culturing mesenchymal stem cells on microcarriers. This miniature auto-perfusion system provides an excellent solution to maintain cell-favorable conditions and high cell concentration in small-scale cultures for research and clinical uses.

Details

ISSN :
10970290 and 00063592
Volume :
118
Database :
OpenAIRE
Journal :
Biotechnology and Bioengineering
Accession number :
edsair.doi.dedup.....8719547829dc2697af311623b97cd5d6