Rapid Electrophoresis Biopolymer Staining Method
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Solution Overview
Problem
Conventional methods for staining biopolymers such as proteins, RNA, DNA, or oligosaccharides in matrices like polyacrylamide gels are time-consuming and cumbersome, requiring multiple steps and solutions, especially when using organic dyes like Coomassie Blue, which takes several hours to complete.
Innovation Solution
Applying an electric force between electrodes to move a binding agent, such as a staining reagent, into the matrix to rapidly bind and label the biopolymer, combining the fixing, staining, and destaining steps into a single process by facilitating the movement of the reagent into and out of the gel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional Coomassie Blue staining method is used, then protein bands can be visualized, but the staining process takes several hours to overnight
Solution Approach 1:
The patent applies periodic electric fields to drive the staining reagent through the gel matrix in a controlled manner, enabling rapid penetration and binding to protein bands. The electric field is applied in cycles or continuously at controlled voltage, replacing the slow passive diffusion process with active electrophoretic movement, thus reducing staining time from hours to minutes while maintaining detection capability
Solution Approach 2:
The patent replaces the mechanical diffusion-based staining process with an electric field-driven electrophoresis process. Instead of relying on random molecular motion and concentration gradients, the staining reagent is propelled through the gel by electric forces, dramatically accelerating the binding process while achieving the same detection outcome
2Measurement precision
If conventional multi-step staining protocol is used, then satisfactory staining results are achieved, but the process becomes cumbersome and time-consuming
Solution Approach 1:
The patent combines multiple conventional staining steps (fixation, staining, and destaining) into a single integrated electrophoretic process. By applying an electric field, the staining reagent simultaneously penetrates the gel, binds to proteins, and excess reagent is washed through the gel, eliminating the need for separate manual steps and reducing operational complexity
Solution Approach 2:
The electric field application serves multiple functions simultaneously: it drives the staining reagent into the gel, facilitates binding to proteins, and removes excess reagent through continued flow. This multi-functional approach replaces several specialized steps with a single versatile process, improving ease of operation while maintaining staining quality
3Measurement precision
If conventional staining method is used, then complete destaining is achieved, but it requires multiple solution replacements over 2-3 hours or overnight
Solution Approach 1:
The electric field is applied continuously or in cycles during the destaining phase, maintaining constant flow of staining solution through the gel. This periodic or continuous action ensures complete removal of excess reagent and achievement of clear background without requiring multiple manual solution changes, thereby improving throughput while maintaining background clarity
Solution Approach 2:
The manual process of repeatedly removing and replacing destaining solutions is replaced with an electric field-driven continuous flow system. The electric force propels fresh destaining solution through the gel continuously, achieving complete background clearing in minutes rather than hours, thus increasing productivity while maintaining detection 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
This approach significantly reduces the staining time to less than 10 minutes, achieving comparable results to conventional methods while minimizing steps and costs, and is applicable for various biopolymers and staining reagents.
Implementation Method 1
moving the binding agent into the matrix using an electric force
Data Source
AI summary
An improved staining method is described for staining a biopolymer such as a peptide, a protein, an RNA, a DNA, an oligosaccharide or a complex containing a peptide, a protein, an RNA, a DNA, or an oligosaccharide in a matrix. The method includes the step of moving a staining reagent into the matrix using an electric force. The staining time can be dramatically reduced relative to conventional technologies. The improved staining method can particularly be used, for example, to stain proteins after gel separation. Other related methods and related kits are also described.