Fluorophore Buffer Composition to Prevent Polymer Dye Stacking
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Solution Overview
Problem
Existing fluorescent detection technologies face challenges in combining multiple polymer dyes in a single chamber, leading to dye stacking and false double positive populations during analysis, which complicates the detection of multiple target types in a sample.
Innovation Solution
A buffering composition comprising cellulose derivatives and polyvinyl alcohol at specific concentrations is used to stabilize the system, preventing dye stacking and improving the detectability of target analytes by reducing or eliminating false positive populations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple polymer dyes are used in a single cocktail for detecting multiple target types, then detection power and efficiency are improved, but dye stacking occurs creating false double positive populations
Solution Approach 1:
The patent introduces a buffer composition containing cellulose derivatives and polyvinyl alcohol as intermediary substances that mediate between multiple polymer dyes. These buffer agents prevent direct interactions between dyes that cause stacking, while allowing the dyes to maintain their fluorescent properties for detection. The buffer composition acts as a protective medium that enables multiple dyes to coexist in a single cocktail without generating false positive signals.
2Ease of operation
If multiple polymer dyes are mixed and stored together in a single tube, then ease of operation is improved, but dye stacking creates false double positive populations
Solution Approach 1:
The buffer composition serves as a protective intermediary that allows multiple polymer dyes to be safely mixed and stored together in a single tube. The cellulose derivatives and polyvinyl alcohol in the buffer prevent dye-dye interactions that would otherwise cause stacking during storage, thereby maintaining result reliability while improving ease of operation.
Solution Approach 2:
The patent applies preliminary action by pre-formulating a buffer composition that contains cellulose derivatives and polyvinyl alcohol specifically designed to prevent dye stacking before the dyes are mixed and stored. This preliminary protective measure ensures that when multiple polymer dyes are combined in advance, they remain stable and do not undergo harmful stacking interactions during storage prior to analysis.
3Measurement precision
If polymer dyes are kept separated in multiple vials to prevent stacking, then measurement precision is improved, but device complexity and staining time increase
Solution Approach 1:
The patent merges multiple separate dye solutions into a single cocktail by introducing a buffer composition that prevents stacking. The buffer containing cellulose derivatives and polyvinyl alcohol allows multiple polymer dyes to be combined in one tube while maintaining detection accuracy, thereby eliminating the need for multiple separate vials and reducing system complexity.
Solution Approach 2:
The patent changes the chemical parameters of the dye solution by adding specific buffer agents (cellulose derivatives and polyvinyl alcohol) that alter the physical-chemical environment. This parameter change prevents dye stacking while allowing multiple dyes to coexist in a single cocktail, thereby simplifying the system without compromising measurement precision.
4Adaptability or versatility
If dry down cocktails are created for separating sample collection and analysis, then adaptability is improved, but dye stacking prevents creation of stable dry down cocktails
Solution Approach 1:
The patent applies preliminary action by pre-formulating a buffer composition with cellulose derivatives and polyvinyl alcohol that stabilizes the cocktail before drying. This preliminary protective measure ensures that when the cocktail undergoes dry down processing, the polymer dyes remain separated and do not stack, thereby enabling the creation of stable dry down cocktails that maintain both adaptability and composition stability.
Solution Approach 2:
The buffer composition acts as an intermediary protective layer during the dry down process. The cellulose derivatives and polyvinyl alcohol maintain physical separation between polymer dyes even under the stress of drying and reconstitution, preventing stacking while allowing the cocktail to be stored in dry form for later use, thereby improving both adaptability and stability.
Data Source
AI summary
Improved compositions and methods of using the compositions in detecting the presence or absence of an analyte are disclosed. These compositions may provide improved signal with fewer false double positive populations observed, by dramatically reducing stacking of polymer dyes and allowing the use of multiple polymer dyes in a single tube thereby improving methods of using such compositions for fluorescent analyses.