Highly Tunable, Nanomaterial-Functionalized Structural Templating of Intracellular Protein Structures Within...

Area of Science:

• Biomaterials Science
• Nanotechnology
• Analytical Chemistry

Background:

• Proteins self-assemble into functional 3D structures within organisms.
• Biotemplating utilizes protein structures for material synthesis, but faces challenges with intracellular protein access and tunability.
• Existing methods struggle to control nanostructure properties while maintaining protein functionality.

Purpose of the Study:

• To introduce Conversion to Advanced Materials via labeled Biostructures (CamBio), an integrated biotemplating platform.
• To demonstrate the creation of tunable protein-derived plasmonic nanostructures.
• To showcase the application of these nanostructures as quantitative tools using surface-enhanced Raman spectroscopy (SERS).

Main Methods:

• Labeling target protein structures with antibodies.
• Growing functional materials onto antibody-labeled protein scaffolds.
• Utilizing fibrous proteins with repeated monomers to form metal nanoparticle nanogaps.
• Employing iterative antibody labeling to adjust antibody density and nanogap formation.
• Applying CamBio to cell-patterned substrates and meat sections.

Main Results:

• CamBio achieves outstanding nanostructure tunability.
• Protein-derived plasmonic nanostructures enable precise quantitative assessment of target species.
• The method generates dense nanogap hot spots for enhanced SERS performance.
• Iterative labeling strategies amplify nanogaps, significantly improving SERS sensitivity.
• CamBio demonstrates cost-effective, scalable preparation with dimensional tunability.

Conclusions:

• CamBio offers a versatile and tunable platform for advanced material synthesis using proteins.
• The developed protein-derived nanostructures are effective SERS substrates for sensitive detection.
• The platform shows potential for accessible, scalable, and adaptable applications in material science and diagnostics.