Automated Cell-Free Protein Production System with Dialysis Membrane
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Solution Overview
Problem
Current automated cell-free protein production systems face challenges in efficiently expressing and purifying proteins, particularly due to the need for large volumes of small-molecule expression solutions, which increase system size and require manual processes for protein purification and storage buffer replacement.
Innovation Solution
An automated system comprising a protein expression reaction unit with dialysis tubes, a reaction temperature control unit, a pipette array, and a magnetic field application device, which allows for continuous supply of small-molecule expression solutions through a dialysis membrane and automated protein purification and storage buffer dialysis, enabling efficient protein expression and purification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If large volumes of small-molecule expression solutions are used to maintain protein expression, then protein expression levels are improved, but system size increases
Solution Approach 1:
The system divides the reaction environment into two distinct compartments separated by a dialysis membrane: an inner compartment containing the protein expression reaction mixture, and an outer compartment containing the small-molecule expression solution. This segmentation allows the reaction mixture to be maintained in a controlled volume while still providing access to abundant small molecules through the membrane, thus maintaining high protein expression levels without requiring a proportionally large system volume.
Solution Approach 2:
The dialysis membrane acts as a flexible thin film that selectively separates the two compartments while allowing small molecules to pass through. This thin film structure enables the system to maintain a compact size by providing a large surface area for molecular exchange without requiring large volumes of solution, as the membrane itself facilitates the transfer of small molecules between compartments.
2Loss of time
If manual processes are used for protein purification and storage buffer replacement, then device complexity is reduced, but loss of time increases
Solution Approach 1:
The automated system integrates multiple functions into a single platform: the dialysis membrane serves both as a separator and as a medium for small molecule exchange; the automated apparatus performs both purification and buffer replacement; the reaction system simultaneously maintains expression conditions and enables purification. This multi-functionality reduces overall process time without requiring separate manual operations for each step.
Solution Approach 2:
The system enables self-service automation where the apparatus automatically performs purification and buffer replacement operations without requiring continuous manual intervention. The automated dispensing and dialysis processes run autonomously, reducing labor time and allowing the system to handle multiple samples simultaneously, thus compensating for the increased device complexity through operational autonomy.
3Manufacturing precision
If dialysis tubes are used for protein purification, then manufacturing precision is improved, but ease of operation worsens
Solution Approach 1:
The system introduces an intermediary automated apparatus that mediates between the user and the dialysis tubes. The automated system handles the complex operations of loading, dialysis, and buffer replacement, while the user simply needs to prepare the initial reaction mixture. This intermediary automation maintains the precision benefits of dialysis tubes while eliminating their operational complexity.
Solution Approach 2:
The system replaces manual mechanical operations with automated mechanical and fluidic systems. Instead of manually manipulating dialysis tubes and performing sequential purification steps, the automated apparatus uses programmed mechanical movements, pump-controlled fluid flow, and automated buffer exchange to achieve the same purification goals, thereby improving ease of operation while maintaining precision.
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
The system increases protein expression levels, reduces system size, and automates protein purification and storage buffer replacement, resulting in a more compact and efficient protein production process.
Implementation Method 1
a dialysis tube which comprises a dialysis membrane (112)
Implementation Method 2
a protein purification unit including a magnetic field application device
Implementation Method 3
a reaction temperature control unit configured to heat or cool the reaction vessel
Data Source
Figure 1~2(c)3
Figure 3(a)~3(b)
Figure 4(a)~4(b)
AI summary
The present invention relates to an automated cell-free protein production system and a method for producing a protein using the same. More specifically, the present invention relates to an automated cell-free protein production system comprising: a protein expression reaction unit comprising a reaction vessel that includes a plurality of dialysis tubes, each including a dialysis membrane and being open at its top; a reaction temperature control unit configured to heat or cool the reaction vessel; a pipette array comprising a plurality of pipettes and configured to suck or discharge solutions using the pipettes; a pipette array moving unit configured to move the pipette array in an upward and downward direction, a forward and backward direction or a left and right direction so as to move solutions; a protein purification unit including a magnetic field application device; and a multi-well plate mounting unit having mounted therein a multi-well plate kit configured to supply solutions that are used for protein production, and a method for producing a protein using the same.