Enhanced surface nanoanalytics of transient biomolecular processes

Area of Science:

• Analytical Chemistry
• Biophysics
• Molecular Biology

Background:

• Understanding biomolecular properties is crucial for health and disease research.
• Existing analytical methods often require high concentrations and non-physiological conditions.
• There is a need for advanced techniques to study biomolecules at the single-molecule level under native conditions.

Purpose of the Study:

• To develop and apply an integrated lab-on-a-chip spray approach for biomolecular analysis.
• To enhance spectroscopic sensitivity and achieve single-molecule spatial resolution.
• To enable multidimensional studies of heterogeneous biomolecular systems.

Main Methods:

• Development of a lab-on-a-chip spray system for rapid sample preparation, mixing, and deposition.
• Integration with nanoanalytical techniques including nanoscopy and vibrational spectroscopy.
• Application to study the self-assembly of alpha-synuclein oligomers.

Main Results:

• The lab-on-a-chip spray approach significantly enhances spectroscopic sensitivity and spatial resolution.
• Multidimensional analysis of biomolecular systems across multiple length scales is enabled.
• Structural conformations of transient alpha-synuclein oligomers, relevant to Parkinson's disease, were captured and analyzed.

Conclusions:

• The developed platform offers a powerful tool for investigating complex biomolecular systems.
• This method facilitates the study of transient species involved in neurodegenerative diseases.
• The approach bridges the gap between bulk measurements and single-molecule analysis under near-physiological conditions.