Flow-Based Peptide Synthesis Reducing Cycle Time
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Solution Overview
Problem
Current solid phase peptide synthesis methods are slow and inefficient, requiring long times to add a single amino acid residue, with conventional techniques taking 30 to 90 minutes, and have not seen significant improvements in speed over 30 years despite the commercial success of automated synthesizers.
Innovation Solution
The development of a flow-based platform that rapidly preheats and delivers reagents to a resin bed, allowing for continuous peptide synthesis with high concentration reagents, reducing synthesis time by leveraging a flow-based approach, eliminating the need for stirring, and enabling automation for faster cycle times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional solid phase peptide synthesis methods are used, then peptide synthesis can be performed with standard procedures, but the synthesis time is long (30 to 90 minutes per amino acid addition)
Solution Approach 1:
The patent implements continuous flow synthesis where reagents are continuously pumped through the reactor containing immobilized peptides. This eliminates the batch-wise intermittent operation of conventional methods, maintaining continuous reaction and processing. The system uses pumps to deliver reagents continuously and a flow-through reactor design that allows constant exposure of peptides to fresh reagents, thereby reducing cycle time from 30-90 minutes to under 5 minutes per amino acid addition.
Solution Approach 2:
The patent employs hydraulic principles by using liquid flow to transport reagents through the reaction system. A pump delivers reagent solutions through tubing into a reactor where immobilized peptides are exposed to the flowing reagents. This fluid-based transport and reaction approach replaces conventional mechanical stirring and batch processing, enabling rapid reagent delivery and significantly reducing the time required for each synthesis step.
2Speed
If heating is applied to reagents, then the reaction rate increases and synthesis time is reduced, but reagent stability may be compromised
Solution Approach 1:
The patent pre-heats reagents in a heating block or water bath before they enter the reaction zone. This preliminary heating action ensures that reagents are at the optimal temperature when they contact the immobilized peptides, maximizing reaction rate without requiring continuous high-temperature processing that could degrade reagents. The reagents are heated in advance and then quickly applied to the peptides, achieving fast reactions while preserving reagent stability.
Solution Approach 2:
The continuous flow system maintains reagents at elevated temperatures throughout the reaction process by constantly circulating them through heated zones. This continuous exposure to moderate heat over a short duration is more effective and safer than intermittent high-heat treatment, as it prevents localized overheating and reagent degradation while maintaining high reaction rates throughout the synthesis process.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enables amino acid addition cycles to be completed in under 5 minutes, achieving high yields and purity without double coupling or double deprotection, and allows for the rapid synthesis of peptides and proteins, significantly reducing overall synthesis time compared to conventional methods.
Implementation Method 1
The reagents can be heated in a heating block or water bath
Implementation Method 2
A pump can deliver reagents to a reactor
Data Source
AI summary
Systems and processes for performing solid phase peptide synthesis are generally described. Solid phase peptide synthesis is a known process in which amino acid residues are added to peptides that have been immobilized on a solid support. In certain embodiments, the inventive systems and methods can be used to perform solid phase peptide synthesis quickly while maintaining high yields. Certain embodiments relate to processes and systems that may be used to heat, transport, and/or mix reagents in ways that reduce the amount of time required to perform solid phase peptide synthesis.