Plasmonic Interfaces for Advanced Profiling of Cell-Free Circulating Biomarkers

Area of Science:

• Biomarker Discovery
• Nanotechnology
• Personalized Medicine

Background:

• Cell-free biomarkers, including extracellular vesicles (EVs), are abundant in bodily fluids and offer potential for minimally invasive disease monitoring.
• Their diverse biophysical and biomolecular characteristics provide rich information for personalized medicine.
• Current analytical technologies struggle to accommodate the wide spectrum of cell-free biomarker sizes and compositions.

Purpose of the Study:

• To review the characteristics of cell-free circulating biomarkers.
• To overview plasmonic sensing mechanisms for biomarker detection.
• To highlight advanced plasmonic interface designs for enhanced cell-free biomarker analysis.

Main Methods:

• Discussion of cell-free biomarker properties.
• Overview of surface plasmon resonance (SPR) sensing principles.
• Analysis of plasmonic interfaces utilizing colloidal nanoparticles and arrayed nanostructures.

Main Results:

• Engineered plasmonic interfaces are crucial for accommodating diverse biomarker characteristics.
• SPR technology, particularly with tailored interfaces, shows promise for overcoming current detection limitations.
• Various plasmonic interface designs (nanoparticles, nanostructures) enable enhanced detection.

Conclusions:

• Surface plasmon resonance (SPR) with engineered plasmonic interfaces is a powerful tool for detecting diverse cell-free biomarkers.
• Technological advancements in plasmonic interfaces are key to facilitating biomarker discovery and clinical translation.
• This approach holds significant promise for next-generation personalized medicine.