Vesicular Diagnostics: A Spotlight on Lactate- and Ammonia-Sensing Systems

Area of Science:

• Biotechnology
• Nanotechnology
• Analytical Chemistry

Background:

• Liposomes and polymersomes are established drug delivery systems with numerous FDA approvals.
• Vesicles also serve diagnostic roles, from controlled release of agents to analyte separation and compartmentalization.
• Their unique membrane properties are key to advanced diagnostic applications in complex biological settings.

Purpose of the Study:

• To highlight the complexities in developing and translating diagnostic vesicles.
• To showcase vesicle applications in sensing and diagnostics.
• To present case studies of diagnostic vesicle development.

Main Methods:

• Development of a liposomal reaction compartment for lactate sensing.
• Engineering of a transmembrane pH-gradient polymersome for ammonia sensing.
• Utilizing vesicle membrane properties for analyte separation and reaction compartmentalization.

Main Results:

• Demonstrated successful application of liposomes as reaction compartments for lactate detection.
• Showcased the functionality of pH-gradient polymersomes in ammonia sensing.
• Highlighted the potential of diagnostic vesicles in complex biological matrices.

Conclusions:

• Diagnostic vesicles offer versatile platforms for advanced sensing applications.
• Vesicle engineering is crucial for overcoming translation challenges in diagnostics.
• Liposomes and polymersomes show significant promise for in-situ diagnostics.