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Antibody engineering--a valuable asset in preventing closed environment epidemics
Ted Fjallman1, J Christopher Hall
1Department of Environmental Biology, University of Guelph, Guelph, Canada. tfjallma@uoguelph.ca
Acta Astronautica
|July 14, 2005
Summary
Spacecraft harbor microbes that damage equipment and crops. Recombinant antibodies offer a novel solution for integrated pest management in life support systems, enhancing disease resistance.
Area of Science:
- Microbiology
- Biotechnology
- Space Science
Background:
- Microbial contamination, including bacteria and fungi, is a significant issue on spacecraft (e.g., Mir, Space Shuttle, Skylab, Apollo).
- These microbes can degrade equipment and harm crops grown in space environments.
- Key terrestrial fungal pathogens like Phytophthora, Pythium, and Fusarium, responsible for greenhouse epidemics, have been detected in life support system test-beds.
Purpose of the Study:
- To explore the potential of recombinant antibody technologies for managing microbial contamination in space life support systems.
- To investigate novel strategies for enhancing the efficacy of existing antifungal countermeasures.
- To propose methods for developing direct disease resistance in space-grown crops and life support systems.
Main Methods:
- Utilizing recombinant antibody technologies such as ribosome display and phage display for antibody development.
- Engineering antibodies against specific toxins or organisms relevant to spacecraft microbial contamination.
- Exploring in vitro molecular evolution for antibody maturation.
- Investigating chemical linkage of antibodies to biocides and pathogen trapping in biofilters.
- Proposing in situ expression of antibody-biocide fusions in plants or microbes.
Main Results:
- Recombinant antibody technologies enable the development of antibodies against a wide range of targets.
- Antibodies can be evolved in vitro for enhanced efficacy.
- Chemical linkage of antibodies to biocides can improve antifungal countermeasure effectiveness.
- In situ expression of antibody-biocide fusions offers a pathway to direct disease resistance.
Conclusions:
- Recombinant antibodies present a promising tool for integrated pest management in space life support systems.
- Antibody-biocide fusions can enhance existing countermeasures and provide novel disease resistance strategies.
- This approach has the potential to mitigate microbial risks to both equipment and space agriculture.