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Published on: November 1, 2011
Surrogate strains of human pathogens for field release
Sangjin Park1,2, Chang-Hwan Kim2, Seong Tae Jeong2
1a Metabolic and Biomolecular Engineering National Research Laboratory, Department of Chemical and Biomolecular Engineering (BK21 Plus Program), Center for Systems and Synthetic Biotechnology , Institute for the BioCentury, Korea Advanced Institute of Science and Technology (KAIST) , Daejeon , Republic of Korea.
Engineered microorganisms, or surrogates, are vital for pathogen research. Strain engineering and synthetic biology offer enhanced safety and utility for field-released microbial surrogates, addressing environmental and human safety concerns.
Area of Science:
- Microbiology
- Synthetic Biology
- Biotechnology
Background:
- Surrogate microorganisms are crucial for pathogen research but face safety restrictions for field use.
- Current field surrogates for food-borne pathogens and biological warfare agents often involve attenuated pathogens or non-pathogenic species, with limited genetic modification.
- Genetic engineering aims to reduce virulence and improve detection of surrogates.
Purpose of the Study:
- To explore the potential of strain engineering and synthetic biology for developing safer and more effective microbial surrogates for field research.
- To demonstrate how genetic modification can enhance the utility and safety of surrogates for specific research applications.
Main Methods:
- Construction of engineered strains of Bacillus thuringiensis as surrogates for Bacillus anthracis.
- Application of genetic circuits to enhance surrogate safety and utility.
- Review of existing methods for attenuating virulence and facilitating detection in microbial surrogates.
Main Results:
- Engineered Bacillus thuringiensis strains showed enhanced utility as surrogates for Bacillus anthracis.
- A simple genetic circuit significantly improved the safety profile of the engineered surrogates.
- Strain engineering demonstrates potential to overcome safety concerns associated with genetically engineered microorganisms in field research.
Conclusions:
- Strain engineering and synthetic biology offer powerful tools to develop advanced microbial surrogates for field research.
- Future research should leverage synthetic biology for improved biocontainment and genetic devices in field-use surrogates.
- Addressing safety concerns through advanced biotechnology is key to unlocking the full potential of microbial surrogates.
