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Cytotechnology

, Volume 71, Issue 2, pp 671–678 | Cite as

Numerical simulation of scaling-up an inverted frusto-conical shaking bioreactor with low shear stress for mammalian cell suspension culture

  • Ning Ding
  • Chao Li
  • Meijin GuoEmail author
  • Ali Mohsin
  • Siliang ZhangEmail author
Short Communication
  • 50 Downloads

Abstract

Shear stress is one of the key factors affecting the large-scale culture of mammalian cells. In this study, numerical simulation based on computational fluid dynamics was used to conduct a flow-field analysis of 7, 50, 200, and 1200 L inverted frusto-conical shaking bioreactors. The results show that the shear rate, specific mass transfer area (a), and volumetric oxygen mass transfer coefficient (kLa) gradually decreased as the scale of the bioreactor increased. Through application of BHK21 and CHO cells in 7, 200, and 1200 L bioreactors, it was found that the cell density and antibody expression level increased as the volume of the bioreactor increased. Moreover, the antibody expression level in a 1200 L bioreactor was nearly 30% and 35% higher than that of 7 and 200 L bioreactors, respectively. The results demonstrate that the environment with a larger volume is more suitable for the growth and antibody expression of CHO cells, indicating shear stress might be the most critical factor affecting the scale-up of mammalian cells.

Keywords

Inverted frusto-conical shaking bioreactor Scale up Low shear stress Computational fluid dynamics Numerical simulation Suspension cell culture 

Abbreviations

A

Centrifugal acceleration (m/s2)

α

Gas–liquid specific mass transfer area (m−1)

BHK

Baby hamster syrian kidney

CFD

Computational fluid dynamics

CHO

Chinese hamster ovary

DO

Dissolved oxygen (%)

Hr

Relative height of liquid level (dimensionless)

IFSB

Inverted frusto-conical shaking bioreactor

kL

Oxygen mass transfer coefficient (m/h)

kLa

Volumetric oxygen mass transfer coefficient (h−1)

P/VL

Specific power consumption (Kw/m3)

SCBB

Sharp-point conical bottom bioreactor

ε

Energy dissipation rate (m2/s3)

Notes

Author’s contribution

This study was designed by ND and CL. The experiments were performed by ND, CL and MG. The paper was written by ND and CL. AM participated in manuscript writing and polished the English thoroughly. MG and SZ participated in the data discussion. All authors read and approved the final manuscript.

Funding

This research was supported by grants from the National High Technology Research and Development Program of China (2012AA021201) and the Fundamental Research Funds for the China Central Universities (Nos. 22221818014 and 22221817014) and the 111 Project (B18022) to Meijin Guo.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Availability of data and materials

All supporting data are included within the article and its Additional file.

Consent for publication

All authors consented to publication of the present manuscript.

Ethics approval and consent to participate

The authors declare that this is not a study involving human participants and reporting health related outcomes.

Supplementary material

10616_2019_308_MOESM1_ESM.docx (3 mb)
Supplementary material 1 (DOCX 3072 kb)

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Copyright information

© Springer Nature B.V. 2019

Authors and Affiliations

  1. 1.State Key Laboratory of Bioreactor EngineeringEast China University of Science and TechnologyShanghaiChina

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