Related Experiment Videos
Modulation of epothilone analog production through media design
1Kosan Biosciences, Inc., 3832 Bay Center Place, Hayward, CA 94545, USA.
Journal of Industrial Microbiology & Biotechnology
|April 9, 2002
Summary
Researchers engineered a polyketide synthase (PKS) for large-scale epothilone D production. Supplementing specific substrates to the media allowed for the production of three additional epothilones, including epothilones H(1) and H(2).
Area of Science:
- Biotechnology
- Synthetic Biology
- Natural Product Synthesis
Background:
- Epothilones are potent anticancer agents.
- Large-scale production of epothilones is crucial for drug development.
- Genetic engineering of polyketide synthases (PKS) offers a promising route for natural product synthesis.
Purpose of the Study:
- To develop a heterologous production system for epothilone D.
- To explore substrate-mediated modulation of epothilone production in a recombinant host.
- To expand the repertoire of epothilones produced from a single engineered PKS.
Main Methods:
- Introduction of the epothilone polyketide synthase (PKS) into a heterologous host.
- Culturing of the recombinant strain with various media supplements (acetate, propionate, L-serine).
- Analysis of fermentation products to identify and quantify different epothilone analogs.
Main Results:
- Successful large-scale production of epothilone D.
- Demonstrated that media supplementation can yield other epothilones as major products.
- Addition of acetate or propionate modulated the epothilone D:C ratio.
- L-serine combined with acetate or propionate resulted in epothilone H(1) or H(2) as the major product.
Conclusions:
- A single engineered epothilone PKS host can produce at least four novel epothilones.
- Media supplementation is a viable strategy to diversify natural product synthesis.
- This approach facilitates the production of multiple epothilone analogs for further research and development.