Related Experiment Video
Updated: Jun 23, 2026
09:11
A Comparative Analysis of Recombinant Protein Expression in Different Biofactories: Bacteria, Insect Cells and Plant Systems
Published on: March 23, 2015
Recombinant protein production: a comparative view on host physiology.
Yanina Sevastsyanovich1, Sara Alfasi, Jeffrey Cole
1School of Biosciences, University of Birmingham, Birmingham B15 2TT, UK.
New Biotechnology
|May 12, 2009
Summary
Diverse host systems are crucial for producing quality recombinant proteins for healthcare. Advances in understanding host physiology and systems biology are key to improving production, with bacterial glycosylation systems offering new solutions.
Area of Science:
- Biotechnology and biopharmaceutical manufacturing
- Molecular biology and host-pathogen interactions
- Protein engineering and production
Background:
- The European Federation of Biotechnology (EFB) convened experts to discuss host physiology's impact on recombinant protein production.
- The need for a diverse range of host systems remains critical for producing high-quality recombinant proteins for human healthcare applications.
- Current challenges include unpredictable transfection line performance in Chinese Hamster Ovary (CHO) cells at high densities and the limitations of traditional hosts.
Framework:
- Exploring alternative hosts like Pichia pastoris as potential replacements for mammalian cell cultures in various applications.
- Leveraging transcriptomic and proteomic data to gain insights into improving recombinant protein production efficiency.
- Addressing the historical limitations of Escherichia coli (E. coli) in producing eukaryotic proteins, particularly glycosylation.
Implementation:
- Chinese Hamster Ovary (CHO) cells demonstrate high production titres but exhibit unpredictable performance declines at high cell densities.
- Pichia pastoris emerges as a promising alternative host, potentially supplanting mammalian cell cultures for numerous biopharmaceutical applications.
- Escherichia coli (E. coli) continues to be a primary host for over half of all recombinant proteins produced, despite its inability to glycosylate eukaryotic proteins.
Implications:
- The development of bacterial N-linked protein glycosylation systems presents an imminent solution to E. coli's glycosylation limitations, expanding its utility.
- Integrating systems biology approaches (genomics, proteomics) holds the potential to optimize recombinant protein production, though challenges remain in fully realizing this promise.
- Continued research into host-pathogen interactions and host physiology is essential for advancing the field of biopharmaceutical manufacturing and ensuring a robust pipeline of therapeutic proteins.
Related Concept Videos
01:09Recombinant DNA
Overview
01:09Recombinant DNA
Overview
01:27Upstream Processing
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...
01:30Production of Pharmaceuticals
Industrial insulin production uses genetically engineered E. coli expressing a proinsulin gene controlled by a tryptophan promoter and containing a methionine linker for later cleavage. The cells also carry ampicillin resistance for selective growth. Seed cultures are stored at −80 °C and production begins by thawing a small amount to inoculate starter cultures, which are progressively scaled to a 50,000-L bioreactor. In the bioreactor, E. coli grow in nutrient-rich media under sterile, tightly...
01:20The Central Dogma
The central dogma explains the flow of genetic information from DNA nucleotides to the amino acid sequence of proteins.
RNA is the Missing Link Between DNA and Proteins
In the early 1900s, scientists discovered that DNA stores all the information needed for cellular functions and that proteins perform most of these functions. However, the mechanisms of converting genetic information into functional proteins remained unknown for many years. Initially, it was believed that a single gene is...
RNA is the Missing Link Between DNA and Proteins
In the early 1900s, scientists discovered that DNA stores all the information needed for cellular functions and that proteins perform most of these functions. However, the mechanisms of converting genetic information into functional proteins remained unknown for many years. Initially, it was believed that a single gene is...