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Related Concept Videos

Bioreactor Controls-III01:22

Bioreactor Controls-III

Strain improvement is a foundational strategy in industrial microbiology aimed at maximizing microbial productivity, particularly because natural isolates typically yield commercially valuable products in very low concentrations. Although optimizing the culture medium and environmental conditions can improve yields, these adjustments are inherently limited by the organism’s genetic potential. As a result, the focus shifts toward genetic modifications to enhance biosynthetic capacity. The...
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Upstream processing represents a critical phase in biomanufacturing, wherein biological systems such as microorganisms, mammalian cells, or insect cells are cultivated to produce therapeutic proteins, vaccines, enzymes, or other biologically derived products. This phase encompasses all steps from the selection and genetic manipulation of the production organism to the cultivation of cells in bioreactors under tightly controlled environmental conditions.Host Selection and Genetic OptimizationThe...

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A High-throughput Automated Platform for the Development of Manufacturing Cell Lines for Protein Therapeutics
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Enhancing CHO cell recombinant protein production using a perfusion-directed host evolution approach.

Peter Amaya1, Rajesh K Mistry2, Susie Sou2

  • 1Cell Culture & Fermentation Sciences, BioPharmaceuticals Development, R&D, AstraZeneca, Gaithersburg, Maryland, USA.

Biotechnology Progress
|November 27, 2025
PubMed
Summary
This summary is machine-generated.

Chinese hamster ovary (CHO) cells adapted to perfusion bioreactor conditions show improved performance. This perfusion-evolved host enhances biotherapeutic production, increasing productivity and the frequency of high-producing clones.

Keywords:
CHObiomanufacturingcell line developmentevolutionperfusionproductivityproteomics

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Area of Science:

  • Biotechnology
  • Cell Biology
  • Bioprocessing Engineering

Background:

  • Chinese hamster ovary (CHO) cells are crucial for biotherapeutic production but struggle with stressors in high-intensity perfusion bioreactors.
  • Poor process performance in perfusion cultures limits the efficiency of CHO cell-based manufacturing.

Purpose of the Study:

  • To develop an adapted Chinese hamster ovary (CHO) host cell line for improved performance in perfusion bioreactor cultures.
  • To evaluate the impact of a perfusion-evolved host on biotherapeutic production and clone selection efficiency.

Main Methods:

  • Selected CHO host cells under physical and chemical stressors in a 30-day perfusion bioreactor culture.
  • Evaluated the performance of the adapted host using stable transfectant pools and clones expressing biotherapeutics.
  • Conducted comparative proteomic analysis to understand underlying molecular mechanisms.

Main Results:

  • Perfusion-evolved host cell lines demonstrated superior performance compared to the parental host.
  • Enhanced productivity, cell-specific productivity, and end-of-run viability were observed in fed-batch cultures.
  • Increased frequency of high-producing clones and 30% higher productivity in perfusion cultures were achieved.
  • Improved mannose profiles and reduced lactate production were noted.

Conclusions:

  • The adapted perfusion host significantly improves cell line development efficiency and biotherapeutic production capability.
  • The perfusion-evolved host offers a promising strategy for optimizing CHO cell-based manufacturing in perfusion platforms.
  • Proteomic insights reveal regulatory networks contributing to enhanced production performance.