Non-Sugar Solutes Stabilize Biologically Active Molecules
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing buffers and stabilizers for proteins in immunochromatographic test assays become ineffective under dry conditions, leading to rapid degradation and short shelf-life of biologically active molecules and conjugate labels.
Innovation Solution
The use of non-sugar organic compatible solutes, such as amino acids and osmolytes, to preserve and protect the activity of biologically active molecules and conjugate labels on dry carriers, extending their stability in both dry and reconstituted states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional buffers and stabilizers are used in immunochromatographic test assays, then the assays can function properly in solution phase, but the biologically active molecules and conjugate labels degrade rapidly under dry conditions during storage
Solution Approach 1:
The patent changes the chemical composition parameters by replacing conventional sugar-based stabilizers (sucrose, trehalose) with non-sugar organic compatible solutes (amino acids like glycine, alanine, serine; osmolytes like betaine, sarcosine; polyols like glycerol). This parameter change enables the stabilizing system to function effectively in both solution and dry states, resolving the contradiction between reliability in solution phase and duration under dry conditions
Solution Approach 2:
The patent creates a composite stabilizing system by combining multiple non-sugar organic compatible solutes together (e.g., amino acids with osmolytes, or polyols with amino acids). This composite approach provides synergistic protection that maintains molecular stability during drying, storage, and reconstitution, extending shelf-life while preserving biological activity
2Duration of action of stationary object
If non-sugar organic compatible solutes are used to protect biologically active molecules in dry state, then the shelf-life is extended, but the complexity of the formulation increases
Solution Approach 1:
The non-sugar organic compatible solutes serve multiple functions simultaneously: they act as stabilizers during drying, protectants during storage, and solubilizers during reconstitution. This multi-functionality reduces the need for separate additives for each stage, thereby extending shelf-life without proportionally increasing formulation complexity
Solution Approach 2:
The patent uses simple, small-molecule organic compounds (amino acids, osmolytes, polyols) that are chemically stable, easy to handle, and can be incorporated into the formulation in straightforward processes. These simple molecules provide robust protection without requiring complex synthesis or handling procedures
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
The non-sugar organic compatible solutes effectively maintain the activity of biologically active molecules and conjugate labels for longer durations, ensuring consistent performance of immunochromatographic test assays even under extreme storage conditions.
Implementation Method 1
the activity of biologically active molecules can generally be preserved, protected, and kept preserved for longer durations of time when deposited together with one or more non-sugar organic compatible solutes
Data Source
AI summary
Provided are methods comprising the use of non-sugar organic compatible solutes for protection and preservation of the activity of biologically active molecules and conjugate labels. The methods are particularly adaptable for use in conjunction with immunoassays, such as for example, immunochromatographic test assays and may be incorporated into any test methodology wherein a dry test strip is used as a carrier for depositing, mobilizeable and/or immobilized biologically active molecules and/or conjugate labels.