Photoactivated Immunostaining for Multistaining Sensitivity
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Solution Overview
Problem
Conventional immunostaining methods require temperature and time adjustments for enzymatic reactions, making the process complex and difficult to perform, especially for multistaining procedures, and are limited by the need for multiple reaction solutions and enzyme-dependent radical generation.
Innovation Solution
An immunostaining method involving irradiation with a first excitation light to generate active species from a generating agent in the antibody, causing a pigment compound to bind to a target molecule, thereby simplifying the process and eliminating the need for enzyme-dependent reactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If enzyme-based immunostaining is used to generate radicals, then detection sensitivity is improved, but process complexity increases due to temperature and time adjustments
Solution Approach 1:
The patent replaces the enzymatic chemical reaction system with a photochemical system. Instead of using enzymes that require temperature and time control to generate radicals, the invention uses a photosensitizer that generates radicals upon irradiation with light of a specific wavelength. This substitution eliminates the need for complex temperature and time adjustments while maintaining radical generation capability for sensitive detection.
Solution Approach 2:
The patent changes the activation parameter from thermal/enzymatic control to optical control. By using a photosensitizer that activates upon light irradiation, the system transitions from requiring temperature and time parameters to requiring only light wavelength and irradiation time parameters, significantly simplifying the overall process control.
2Measurement precision
If multiple reaction solutions are used for enzyme adjustments, then detection accuracy is improved, but ease of operation deteriorates
Solution Approach 1:
The patent extracts and eliminates the need for multiple reaction solutions by using a photochemical system. Instead of requiring multiple solutions for enzyme optimization, the invention uses a single reaction system activated by light irradiation, thereby maintaining detection accuracy while significantly improving ease of operation.
3Reliability
If conventional immunostaining is used, then basic detection is achieved, but multistaining capability is limited
Solution Approach 1:
The patent applies universality by using a photosensitizer that can be excited by light at different wavelengths to achieve multistaining. The same photochemical mechanism can be used for detecting different antigens with different photosensitizers, allowing multiple staining procedures without requiring separate enzymatic systems 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
This method allows for easier and more quantitative immunostaining with enhanced sensitivity and multistaining capabilities, reducing the complexity of process adjustments and preserving specimen integrity.
Implementation Method 1
an antibody that is bound to the target molecule and that includes a generating agent for generating active species when irradiated with the first excitation light
Data Source
AI summary
An immunostaining method includes an irradiation process in which a specimen, which includes a target molecule including an electron donor, an antibody that is bound to the target molecule and that includes a generating agent for generating active species when irradiated with a first excitation light, and a pigment compound, is irradiated with the first excitation light; and in which the pigment compound and the electron donor are bound due to the active species generated from the generating agent when irradiated with the first excitation light.