Pipette-tip Extraction Columns for Biomolecule Purification
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Solution Overview
Problem
Traditional methods for purifying and concentrating biomolecules, such as proteins, are time-consuming, labor-intensive, and require extensive equipment, making them inefficient for obtaining highly concentrated, pure samples for analytical processes like mass spectrometry and x-ray crystallography.
Innovation Solution
A two-step process using pipette-tip columns for purification and concentration, where the first step involves purifying the analyte using a larger column with high selectivity and the second step involves concentrating the analyte using a smaller column with high loading capacity, allowing for automated processing and minimal use of glassware and reagents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If traditional heart-cut chromatography method is used, then analyte purification and concentration can be achieved, but the process becomes time-consuming, labor-intensive, and equipment-intensive
Solution Approach 1:
The patent divides the extraction process into two sequential steps using two different columns: a first extraction column for purification and a second extraction column for concentration. This segmentation allows each column to be optimized for its specific function, achieving high analyte concentration while reducing overall process time compared to traditional multi-fraction collection methods.
Solution Approach 2:
The patent extracts the analyte from the sample solution in two distinct stages: first extracting and purifying the analyte using a first extraction column, then extracting and concentrating the purified analyte using a second extraction column. This two-step extraction approach eliminates the need for multiple fraction collections and spectrophotometer monitoring, significantly reducing time and labor requirements.
2Quantity of substance
If traditional heart-cut method with multiple fractions is used, then analyte purification can be achieved, but extensive glassware and disposable laboratory ware are required
Solution Approach 1:
The patent merges the purification and concentration functions into a streamlined two-column system where the first extraction column performs purification and the second extraction column performs concentration. This merging eliminates the need for multiple separate fraction collection steps and extensive glassware, reducing device complexity while maintaining high analyte purity.
Solution Approach 2:
The extraction columns are designed to perform multiple functions: the first column provides both extraction and purification, while the second column provides both extraction and concentration. This multi-functionality reduces the need for separate specialized equipment and glassware, simplifying the overall device requirements.
3Quantity of substance
If traditional manual fraction collection method is used, then analyte concentration determination can be performed, but the process cannot be automated
Solution Approach 1:
The patent employs a robotic system that automatically performs the two-step extraction process without manual intervention. The robotic system handles sample loading, column processing, and analyte collection, enabling full automation of the purification and concentration process while maintaining the ability to determine analyte concentration through integrated detection.
4Quantity of substance
If conventional extraction methods are used, then analyte purification can be achieved, but interfering contaminants are not effectively removed
Solution Approach 1:
The patent uses two different extraction columns with different selectivities: the first extraction column is optimized for removing interfering contaminants through its specific binding characteristics, while the second extraction column is optimized for concentrating the purified analyte. This local quality differentiation ensures effective contaminant removal while maintaining high analyte purity and concentration.
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 method yields higher concentrations of pure analytes with maintained structural integrity, is more efficient than traditional methods, and can be automated, simplifying the sample preparation process for various analytical techniques.
Implementation Method 1
Solid phase extraction is a powerful technology for purifying and concentrating analytes
Implementation Method 2
the analyte is eluted with as small a volume as possible to produce a high concentration of very pure analyte
Data Source
AI summary
The invention provides columns and methods for the purification and concentration of an analyte (e.g., a biological macromolecule, such as a peptide, protein or nucleic acid) from a sample solution. The columns typically include a bed of extraction medium positioned in the column between two frits. In some embodiments, the extraction columns employ modified pipette tips as column bodies. The invention also provides methods for purifying and concentrating multiple analytes simultaneously.