Suppressing Non-Specific Binding on Magnetic Particles via AC Field
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Solution Overview
Problem
In the chemical and medical industries, it is challenging to suppress non-specific binding molecules while enhancing specific binding molecules, leading to impurities and unwanted effects during the formation of composite molecules.
Innovation Solution
A method utilizing alternating current (ac) magnetic susceptibility to differentiate and suppress non-specific bindings by applying an ac magnetic field with a frequency that disrupts weaker non-specific bindings while preserving stronger specific bindings, using magnetic particles coated with specific and non-specific binding molecules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If magnetic particles are used to bind molecules, then binding efficiency is improved, but non-specific binding increases causing impurities
Solution Approach 1:
The patent applies an alternating magnetic field with specific frequency parameters to differentiate between specific and non-specific bindings. By adjusting the frequency of the magnetic field, the system exploits differences in magnetic susceptibility between bound and unbound molecules, allowing selective detection and suppression of non-specific binding while maintaining specific binding efficiency.
2Manufacturing precision
If stronger binding force is applied to prevent non-specific binding, then purity is improved, but specific binding molecules may be disrupted
Solution Approach 1:
The patent utilizes oscillating magnetic field that creates oscillating magnetic forces on the magnetic particles. This mechanical vibration approach allows the system to disrupt weak non-specific bindings through resonance while leaving stronger specific bindings intact, as the oscillating force is selectively effective at disrupting weaker interactions.
Solution Approach 2:
The patent employs periodic alternating magnetic fields that cycle between attraction and repulsion states. This periodic action allows the system to repeatedly attempt to break non-specific bindings while maintaining specific bindings through the periodic reinforcement of magnetic attraction, thereby achieving purification without compromising specific binding stability.
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
Effectively reduces non-specific bindings while maintaining or increasing specific bindings, allowing for the formation of pure composite molecules by controlling the centrifugal force generated by the ac magnetic field, ensuring the desired binding molecules remain intact.
Implementation Method 1
applying an ac magnetic field with a frequency level, wherein the frequency level causes suppression of the second-type binding molecules in binding with the coating molecules
Implementation Method 2
An ac magnetic field is applied with a frequency level
Implementation Method 3
measuring a first ac magnetoreduction signal for the specific binding of the first-type binding molecules under an ac magnetic field varying in a first ac frequency range
Data Source
Figure 1~2
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AI summary
A method for suppressing non-specific bindings between molecules includes providing magnetic particles dispersed in a liquid, wherein each of the magnetic particles has a magnetization. The magnetic particles are coated with coating molecules. Binding molecules mixed of first-type binding molecules and second-type binding molecules are applied to the liquid, wherein the coating molecules are specifically binding with the first-type binding molecules and non-specifically binding with the second-type binding molecules. An alternating current (ac) magnetic field is applied at an axis with a frequency level, wherein the frequency level causes suppression of the second-type binding molecules in binding with the coating molecules.