Protein Labeling in Stabilizer Mixtures via Reactive Label Calculation
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Solution Overview
Problem
Conventional methods for labeling proteins, such as antibodies, are inefficient and time-consuming due to the need for purification from mixtures containing stabilizers and other non-target proteins, leading to potential loss of valuable antibody and unsatisfactory labeling results.
Innovation Solution
A method for labeling target proteins in mixtures with non-target proteins by calculating an effective amount of reactive label using a specific formula, allowing for efficient conjugate formation without prior purification, and maintaining a desirable signal-to-noise ratio, even in the presence of excess stabilizers like BSA or gelatin.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If purification of antibody from stabilizers and non-target proteins is performed before labeling, then labeling efficiency and signal-to-noise ratio are improved, but time consumption and process complexity increase
Solution Approach 1:
The invention extracts only the necessary action (labeling) from the complex purification process by using a modified labeling reagent system that functions effectively in the presence of stabilizers and non-target proteins, eliminating the need for time-consuming purification steps while maintaining labeling efficiency
Solution Approach 2:
The invention changes the parameters of the labeling reaction by modifying the reagent composition and labeling conditions to tolerate the presence of stabilizers and non-target proteins, allowing direct labeling without purification while maintaining effective labeling efficiency
2Manufacturing precision
If purification steps are performed, then labeling precision is improved, but antibody loss increases
Solution Approach 1:
The invention removes the purification step entirely by designing a labeling system that selectively labels the target antibody even in the presence of stabilizers and non-target proteins, preventing antibody loss that occurs during purification while maintaining labeling precision
Solution Approach 2:
The invention uses a modified labeling reagent as an intermediary that selectively interacts with the target antibody in the presence of stabilizers and non-target proteins, enabling precise labeling without purification and preventing antibody loss
3Ease of operation
If conventional labeling methods are used with crude antibody preparations, then process simplicity is improved, but labeling results become unsatisfactory
Solution Approach 1:
The invention changes the parameters of the labeling reagent and reaction conditions to tolerate crude antibody preparations containing stabilizers and non-target proteins, maintaining both process simplicity and satisfactory labeling results by eliminating the need for purification
4Manufacturing precision
If reactive label amount is increased to compensate for non-target proteins, then target protein labeling is improved, but signal-to-noise ratio may deteriorate
Solution Approach 1:
The invention uses a modified labeling reagent as a selective intermediary that specifically targets the antibody regardless of the presence of stabilizers or non-target proteins, allowing accurate labeling without excessive reagent addition and maintaining signal-to-noise ratio
Solution Approach 2:
The invention optimizes the labeling reagent parameters and reaction conditions to achieve selective labeling of the target antibody in the presence of non-target proteins, improving target protein labeling while maintaining acceptable signal-to-noise ratios through controlled reaction parameters
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 enables efficient and effective labeling of target proteins, achieving comparable or improved signal-to-noise ratios to standard protocols, while avoiding the need for purification and minimizing antibody loss, thus simplifying the process and improving labeling efficiency.
Implementation Method 1
adding an effective amount of reactive label to the mixture under conditions suitable for formation of target-label conjugates
Data Source
AI summary
Provided herein are methods, compositions and kits for labeling of target proteins such as antibodies. The methods, compositions and kits are suited for labeling of such proteins that are mixed with other non-target molecules including BSA, gelatin, and other complex biological molecules.