Rewiring Gram-Negative Bacteria Cell Surfaces with Bio-Orthogonal Chemistry via Liposome Fusion

Area of Science:

• Microbiology
• Synthetic Biology
• Biotechnology

Background:

• Engineering bacterial cell surfaces with non-native molecules is crucial for understanding bacterial communication and developing advanced therapeutics.
• Current methods for bacterial surface modification are often complex, time-consuming, and costly, with limitations on the types of molecules that can be attached.
• Advances in bacterial engineering are needed to enable precise control over cell behavior, interactions, and applications like imaging and drug delivery.

Purpose of the Study:

• To introduce a novel, straightforward method for engineering Gram-negative bacteria cell surfaces.
• To enable the attachment of a wide range of bio-orthogonal groups and subsequent conjugation of diverse molecules.
• To provide a faster, more efficient, and cost-effective alternative to existing bacterial surface modification techniques.

Main Methods:

• A liposome fusion-based approach was employed to engineer the surface of Gram-negative bacteria.
• Bio-orthogonal groups were successfully installed onto the bacterial cell surface.
• Subsequent conjugation of various molecules, including biomolecules, small molecules, probes, proteins, nucleic acids, ligands, and radiolabels, was demonstrated.

Main Results:

• The liposome fusion method provides a facile and efficient way to modify Gram-negative bacterial surfaces.
• The engineered surfaces can be readily conjugated with a broad spectrum of ligands and biomolecules.
• The method is rapid, cost-effective, and expands the scope of molecules that can be attached to bacterial surfaces.

Conclusions:

• Liposome fusion offers a significant advancement in bacterial surface engineering, overcoming limitations of previous methods.
• This technique facilitates the development of novel bacterial-based therapeutics, diagnostic tools, and research probes.
• The versatility and efficiency of this method pave the way for new applications in livestock and human health.