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Updated: May 20, 2026
09:34
A Combinatorial Single-cell Approach to Characterize the Molecular and Immunophenotypic Heterogeneity of Human Stem and Progenitor Populations
Published on: October 25, 2018
Functional heterogeneity and heritability in CHO cell populations
Sarah L Davies1, Clare S Lovelady, Rhian K Grainger
1Department of Chemical and Biological Engineering, ChELSI Institute, University of Sheffield, Mappin St, Sheffield S1 3JD, UK
Biotechnology and Bioengineering
|July 27, 2012
Summary
Researchers explored genetic variations in Chinese hamster ovary (CHO) cells to find improved cell lines for biomanufacturing. They identified clones with heritable differences in proliferation rate and N-glycan processing, showing potential for evolving cell properties.
Area of Science:
- Biotechnology
- Cell Biology
- Bioprocessing
Background:
- Chinese hamster ovary (CHO) cells are crucial for biomanufacturing recombinant proteins.
- Existing CHO cell lines may have limitations in productivity and stability.
- Exploiting inherent genetic and functional variation is a strategy to improve cell lines.
Purpose of the Study:
- To investigate the potential of isolating superior, heritable Chinese hamster ovary (CHO) cell line derivatives for biomanufacturing.
- To assess the heritability of key functional attributes such as proliferation rate and protein production.
- To explore the relationship between cellular characteristics and N-glycosylation in evolved CHO cell populations.
Main Methods:
- Isolation of 199 CHOK1SV clones using limiting dilution and image analysis.
- Assessment of cell-specific proliferation rate in deep-well microplate suspension culture.
- Evaluation of transient recombinant monoclonal antibody (Mab) and green fluorescent protein production post-transfection.
- Analysis of heritability through cryopreservation and extended sub-culture.
- Investigation of correlations between protein biomass, proliferation rate, and N-glycosylation.
Main Results:
- Heritable variation was identified in specific proliferation rate, endocytotic transfectability, and N-glycan processing.
- Differences in transient Mab production capability were not found to be heritable per se.
- Rapid proliferation rate correlated inversely with cell size and protein content, and positively with cell surface glycan content.
- Significant clone-specific variation in biomass accumulation was observed.
Conclusions:
- The functional genome of CHO cells is dynamic, offering opportunities for improvement.
- It is possible to evolve and isolate CHO cell variants with enhanced functional properties in vitro.
- This study demonstrates a strategy for developing 'fit-for-purpose' cell lines for biomanufacturing.
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