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Microbial factories for eco-friendly sunscreens: harnessing Streptomyces to produce mycosporine-like amino acids
Secondary Supervisor(s): Dr Richard Puxty
University of Registration: University of Warwick
BBSRC Research Themes:
Project Outline
This project aims to develop a sustainable platform for producing natural UV-protective compounds using bacteria. Many organisms, including algae, fungi, and cyanobacteria, naturally make mycosporine-like amino acids (MAAs). These molecules act as natural sunscreens, protecting cells from harmful ultraviolet (UV) radiation. Because they are biodegradable and safe, MAAs are promising alternatives to some chemical UV-filters currently found in sunscreens, which can damage ecosystems and pose health risks.
However, natural producers generate MAAs only in very small amounts and often in complex mixtures, making large-scale extraction impractical. This research seeks to harness Streptomyces, a soil-dwelling bacterium widely used for producing valuable natural products such as antibiotics, as a microbial factory to produce MAAs in higher yields. By introducing the genetic instructions for MAA biosynthesis into Streptomyces, the project aims to build a reliable and scalable production platform.
The objectives are to:
1. Identify and characterise new genes and enzymes involved in MAA biosynthesis in cyanobacteria.
2. Design and construct synthetic plasmids to introduce these genes into Streptomyces.
3. Apply analytical chemistry to detect, isolate, and determine the structures of novel MAAs.
4. Engineer the bacterial strains to optimise production levels.
5. Develop a fermentation process for sustainable, cost-effective MAA production.
The approach integrates bioinformatics, microbiology, synthetic biology, analytical chemistry, and bioprocess engineering.
If successful, this project will open the door to eco-friendly sunscreens and highlight how biotechnology can replace harmful chemical processes with greener, renewable solutions.