Solid-phase peptide synthesis in 384-well plates.

Area of Science:

• Biochemistry
• Chemical Biology
• Drug Discovery

Background:

• Solid-phase peptide synthesis (SPPS) advancements allow high-purity peptide production for direct bioactivity screening.
• Current SPPS is limited to 96 peptides per microplate, with 384 peptides synthesized in parallel using multi-reactor devices.
• Scaling up peptide synthesis is crucial for comprehensive screening in drug development.

Purpose of the Study:

• To modify a commercial peptide synthesizer for 384-well plate compatibility, enabling higher throughput synthesis.
• To achieve synthesis of 1,536 peptides in a single run, significantly increasing production capacity.
• To validate the quality of synthesized peptides in terms of quantity, concentration, and purity.

Main Methods:

• Modification of a commercial peptide synthesizer with new hardware components.
• Development of customized software to control the synthesis process in 384-well plates.
• Solid-phase peptide synthesis of 1,536 short peptides.

Main Results:

• Successful synthesis of 1,536 short peptides in one run using modified synthesizer and 384-well plates.
• Achieved high average yield (> 0.5 μmol) and concentration (> 10 mM) for synthesized peptides.
• Obtained decent average purity (> 80%) without the need for chromatographic purification.

Conclusions:

• The developed high-throughput peptide synthesis platform enables the production of large peptide libraries.
• This method is suitable for applications such as peptide drug development, antibody epitope scanning, and substrate screening.
• The system offers a cost-effective and efficient solution for generating diverse peptide sets for biological screening.