Automated Multi-Step Chromatography Purification System
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Solution Overview
Problem
Current protein purification methods are labor-intensive, time-consuming, and inefficient, particularly in multi-step chromatography processes, which hinder the rapid purification of proteins needed for drug research, especially for therapeutic antibodies.
Innovation Solution
An automated multi-step chromatography purification system with a rotary valve and modular design allows for unattended, efficient purification of multiple target molecules from cell culture, using a limited number of purification units and maintaining isolation between samples, eliminating the need for intermediate storage and optimizing each purification step for high throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If manual multi-step chromatography purification is used, then purification can be performed with simple equipment, but the process is labor-intensive and time-consuming
Solution Approach 1:
The purification system is divided into multiple independent purification units, each capable of performing a specific chromatography step. These modular units can be independently controlled and operated, allowing automation while maintaining manageable complexity through functional segmentation of the overall purification process.
Solution Approach 2:
The purification units are designed with multi-functionality to handle different chromatography modes (ion-exchange, affinity, size exclusion) within the same platform. This universal design allows a single automated system to perform multiple purification functions, reducing the need for separate equipment for each step and thereby managing complexity while achieving high automation.
2Productivity
If multiple purification units are used in sequence, then purification efficiency increases, but the risk of cross-contamination between samples increases
Solution Approach 1:
The system extracts and removes samples from the flow path between different purification units using intermediate storage. This physical separation ensures that samples are isolated during transitions between units, preventing cross-contamination while maintaining high productivity through continuous processing of multiple samples in parallel or sequence.
Solution Approach 2:
Intermediate storage components act as mediators between purification units, providing a controlled environment where samples can be held and transferred without direct contact with other samples or the purification media. This intermediary mechanism ensures sample isolation while enabling efficient workflow and high throughput.
3Reliability
If intermediate storage is used between purification steps, then sample isolation is maintained, but the purification time increases
Solution Approach 1:
The system maintains continuous useful action by overlapping purification steps across multiple units. While one unit is processing a sample, another unit can be preparing or cleaning, eliminating idle time. Intermediate storage enables this continuous operation by allowing samples to be held without interrupting the workflow in other units, thus maintaining isolation without adding significant time delays.
4Device complexity
If a limited number of purification units are used, then device complexity is reduced, but the ability to purify multiple target molecules simultaneously is limited
Solution Approach 1:
The purification units are designed with dynamic reconfigurability, allowing the system to adapt its configuration based on the specific purification needs. The same physical units can be dynamically assigned to different chromatography modes and sample types, enabling the purification of multiple target molecules with diverse properties using a limited number of versatile, adaptable units rather than requiring dedicated equipment for each target.
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 significantly reduces manual labor, shortens protein purification time, and ensures high purity and isolation of multiple proteins, making it suitable for large-scale biologic manufacturing while maintaining robustness and reliability.
Implementation Method 1
at least one pump for driving the purification
Implementation Method 2
a valve arrangement with two or more valves for controlling the fluid flow in the system
Implementation Method 3
one of the purification sections (410) is a capture section with two or more capture columns (412a-c)
Implementation Method 4
each eluent purification flow path (425a-b) comprises a purification column (417, 422a-b) for sequentially purifying the eluent flow
Implementation Method 5
system controller (401) comprising a memory (not shown) storing instructions for controlling the components of the system (400)
Data Source
Figure 1
Figure 2a~2b
Figure 2c~2d
AI summary
Automated multi-step chromatography purification system (400) comprising a system controller (401), a capture flow path (410) with at least one pump (425) and two or more capture columns (412a, 412b, 412c), an elution flow path (415, 420) with purification columns (417, 422a, 422b) for subsequent purification, and a valve arrangement with two or more valves (407, 411a, 411b, 421a, 421b), said valves being controlled for selective connection of said capture columns to the capture flow path and the elution flow path respectively such that both flow paths may be operated simultaneously and in parallel.