Peptide Synthesis on a Next-Generation DNA Sequencing Platform

Area of Science:

• Biochemistry
• Molecular Biology
• Biotechnology

Background:

• High-throughput peptide display on solid surfaces is crucial for characterizing peptide function and binding.
• Existing methods face limitations in scale and efficiency for large-scale peptide analysis.

Purpose of the Study:

• To develop a novel method for generating large-scale peptide clusters on solid surfaces.
• To adapt DNA sequencing technology for peptide synthesis and display.
• To enable new possibilities for massively parallel peptide-based assays.

Main Methods:

• Modified Illumina flow cell primers with ribonucleotides for RNA synthesis.
• Utilized poliovirus polymerase 3D(pol) to create RNA clusters from DNA clusters.
• Employed mRNA display to synthesize flow-cell-tethered peptides from RNA aptamers.

Main Results:

• Successfully converted >10(7) DNA clusters into peptide clusters on an Illumina flow cell.
• Synthesized flow-cell-tethered peptides demonstrated selective binding to cognate antibodies.
• Validated the feasibility of templating peptide synthesis using DNA clusters.

Conclusions:

• The described method provides an innovative approach for peptide synthesis and display on solid surfaces.
• This technique offers new opportunities for high-throughput, massively parallel peptide-based assays.
• The method leverages existing DNA sequencing infrastructure for peptide discovery and characterization.