Staphylococcus carnosus: from starter culture to protein engineering platform.

Area of Science:

• Food microbiology
• Biotechnology
• Molecular biology

Background:

• Staphylococcus carnosus has been utilized since the 1950s as a starter culture in sausage fermentation.
• It is recognized as a harmless, "food grade" species, confirmed by its genome lacking pathogenicity genes.
• The non-pathogenic S. carnosus TM300 strain serves as a robust platform for genetic manipulation.

Purpose of the Study:

• To provide a comprehensive overview of Staphylococcus carnosus applications beyond traditional food fermentation.
• To highlight the advancements in genetic engineering of S. carnosus for biotechnological purposes.
• To showcase its utility in sophisticated areas like protein-based drug discovery and biosensing.

Main Methods:

• Development and modification of cloning and secretion systems in S. carnosus TM300.
• Engineering surface display systems for heterologous protein expression.
• Utilizing display systems for library screening, affinity protein generation, and epitope mapping.

Main Results:

• S. carnosus strains engineered for protein secretion and surface display.
• Successful application of display systems for creating bacterial delivery vehicles, biocatalysts, and bioadsorbents.
• Demonstrated utility in profiling protease substrates, generating affinity proteins (Affibody, scFv), and epitope mapping.

Conclusions:

• Staphylococcus carnosus is a highly adaptable and safe platform organism with diverse applications.
• Engineered S. carnosus strains offer powerful tools for industrial protein production and advanced biotechnological applications.
• The versatility of S. carnosus extends from food safety to cutting-edge protein-based drug discovery and environmental biosensing.