Separation of Non-Viable Chinese Hamster Ovary (CHO) Cells Using Dielectrophoresis in a Deterministic Lateral Displacement Ratchet

2021 ◽  
Author(s):  
Mohammed Khan ◽  
Xiaolin Chen ◽  
Jie Xu
Keyword(s):  
Chinese Hamster Ovary ◽  
Cho Cells ◽  
Lateral Displacement ◽  
Chinese Hamster ◽  
Deterministic Lateral Displacement

Separation of Non-Viable Chinese Hamster Ovary (CHO) Cells Using Dielectrophoresis in a Deterministic Lateral Displacement Ratchet

2020 ◽  
Author(s):  
Mohammed Khan ◽  
Xiaolin Chen ◽  
Jie Xu
Keyword(s):  
High Resolution ◽  
Electric Field ◽  
Chinese Hamster Ovary ◽  
Cho Cells ◽  
Lateral Displacement ◽  
Chinese Hamster ◽  
Size Difference ◽  
Geometrical Parameters ◽  
Deterministic Lateral Displacement ◽  
Viable Cells

Abstract Chinese hamster ovary (CHO) cell is the most widely used mammalian cell line for commercial production of therapeutic protein. Any presence of non-viable cells in culture medium may adversely affect subsequent functionality of these proteins. Therefore, separation of non-viable cells from suspending medium is critical in biopharmaceutical and biomedical sectors. One such method termed Deterministic Lateral Displacement has already shown promising capabilities in separating cells based on the cell size difference by taking advantage of the predictable flow laminae. However, in cases where size overlaps between viable and non-viable cells are present, separation based solely on size suffers and high-resolution separation techniques are required. Dielectrophoresis, one of the most widely used nonlinear electro-kinetic mechanism, has the potential to manipulate the same size cells depending on the dielectric properties of individual cells. In this work, we demonstrated that a DLD device can be combined with a frequency-based AC electric field to perform high resolution continuous separation of non-viable CHO cells from the viable or productive cells. The behavior of the coupled DLD-DEP device is further investigated by employing numerical simulation to check the effect of geometrical parameters of the DLD arrays, velocities of the flow field and required applied voltages. A moderate row shift fraction with velocity 700μm/s provided a good separation behavior without any trapping. The cell viability was also ensured by maintaining proper electric field which otherwise may cause cell loss due to ion leakage. Our developed numerical model and presented results lay the groundwork for design and fabrication of high resolution DLD-DEP microchips for enhanced separation of viable and nonviable cells.

Review of the current methods of Chinese Hamster Ovary (CHO) cells cultivation for production of therapeutic protein

2020 ◽  
Vol 17 ◽  
Author(s):  
Shazid Md. Sharker ◽  
Md. Atiqur Rahman
Keyword(s):  
Chinese Hamster Ovary ◽  
Cho Cells ◽  
Mass Production ◽  
Chinese Hamster Ovary Cells ◽  
Chinese Hamster ◽  
Therapeutic Protein ◽  
Specific Productivity ◽  
Ovary Cells ◽  
Further Development ◽  
Interesting Area

Most of clinical approved protein-based drugs or under in clinical trial have a profound impact in the treatment of critical diseases. The mammalian eukaryotic cells culture approaches, particularly the CHO (Chinese Hamster Ovary) cells are mainly used in the biopharmaceutical industry for the mass-production of therapeutic protein. Recent advances in CHO cell bioprocessing to yield recombinant proteins and monoclonal antibodies have enabled the expression of quality protein. The developments of cell lines are possible to upgrade specific productivity. As a result, it holds an interesting area for academic as well as industrial researchers around the world. This review will concentrate on the recent progress of the mammalian CHO cells culture technology and the future scope of further development for the mass-production of protein therapeutics.

Transient ammonia stress on Chinese hamster ovary (CHO) cells yield alterations to alanine metabolism and IgG glycosylation profiles

2021 ◽  
pp. 2100098
Author(s):  
Benjamin F. Synoground ◽  
Claire E. McGraw ◽  
Kathryn S. Elliott ◽  
Christina Leuze ◽  
Jada R. Roth ◽  
...  
Keyword(s):  
Chinese Hamster Ovary ◽  
Cho Cells ◽  
Chinese Hamster ◽  
Ammonia Stress ◽  
Igg Glycosylation

Endogenous TRPM4-like channel in Chinese hamster ovary (CHO) cells

2008 ◽  
Vol 369 (2) ◽  
pp. 712-717 ◽  
Author(s):  
Oleg V. Yarishkin ◽  
Eun-Mi Hwang ◽  
Jae-Yong Park ◽  
Dawon Kang ◽  
Jaehee Han ◽  
...  
Keyword(s):  
Chinese Hamster Ovary ◽  
Cho Cells ◽  
Chinese Hamster

Engineering of coordinated up- and down-regulation of two glycosyltransferases of the O-glycosylation pathway in Chinese hamster ovary (CHO) cells

2002 ◽  
Vol 79 (5) ◽  
pp. 580-585 ◽  
Author(s):  
Elisabetta G. P. Prati ◽  
Mattia Matasci ◽  
Tobias B. Suter ◽  
Andre Dinter ◽  
Adriana R. Sburlati ◽  
...  
Keyword(s):  
Chinese Hamster Ovary ◽  
Cho Cells ◽  
Chinese Hamster ◽  
Down Regulation ◽  
Glycosylation Pathway
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