High-flexibility combinatorial peptide synthesis with laser-based transfer of monomers in solid matrix material

Area of Science:

• Materials Science
• Life Sciences
• Biotechnology

Background:

• Combinatorial patterning is crucial for synthesizing diverse molecular libraries.
• Current methods for creating high-density peptide arrays have limitations in scope and cost-efficiency.

Purpose of the Study:

• To develop a cost-efficient method for combinatorial synthesis of very-high-density peptide arrays.
• To enable the incorporation of a wide range of natural and synthetic monomers, including post-translationally modified ones.

Main Methods:

• Utilizes laser writing to transfer nanometre-thin solid material spots from donor slides to an acceptor surface.
• Employs a two-step process involving initial monomer deposition followed by heat-induced in situ activation and coupling.
• Facilitates combinatorial synthesis with >17,000 spots per cm(2).

Main Results:

• Successfully demonstrated a cost-efficient method for synthesizing peptide arrays with very-high spot density.
• Enabled the incorporation of diverse building blocks, including click chemistry-compatible and non-activated monomers.
• The laser-based transfer and in situ activation method proved effective for creating complex peptide arrays.

Conclusions:

• The developed laser writing technique offers a versatile and efficient approach for combinatorial peptide array synthesis.
• This method expands possibilities for applications in drug discovery, diagnostics, and materials science.
• The high density and monomer diversity achievable pave the way for novel research avenues.