Fluorescent Polymeric Matrix for Label-Free Nucleic Acid Detection
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Solution Overview
Problem
Current nucleic acid detection methods rely on exogenous labels, which increase costs and complexity, and there is a need for label-free detection techniques to simplify and reduce expenses in nucleic acid array analysis.
Innovation Solution
A method using a fluorescent polymeric matrix where single-stranded DNA or RNA is attached to the matrix, and hybridization with a homologous nucleic acid increases the fluorescent emission intensity, allowing for label-free detection of nucleic acid binding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If exogenous labels are used for nucleic acid detection, then detection sensitivity and reliability are improved, but cost and system complexity increase
Solution Approach 1:
The invention extracts and eliminates the exogenous label component from the detection system. By using the intrinsic fluorescent properties of the nucleic acid molecules themselves rather than attaching external labels, the system achieves label-free detection that reduces complexity while maintaining reliability through the natural fluorescent signal of the nucleic acids.
Solution Approach 2:
The nucleic acid molecules serve their own detection function through their intrinsic fluorescent properties. The molecules do not require external labeling agents to be detected; instead, they provide their own detectable signal through fluorescence, enabling self-service detection that simplifies the overall system.
2Difficulty of detecting and measuring
If exogenous labels are incorporated into nucleic acids, then detection capability is enhanced, but manufacturing cost increases
Solution Approach 1:
The invention removes the need for expensive exogenous labels by extracting the detection capability from external additives and placing it inherently in the nucleic acid molecules themselves through their natural fluorescent properties, thereby reducing manufacturing costs while preserving detection capability.
Solution Approach 2:
The invention changes the detection parameter from requiring external label signals to utilizing intrinsic fluorescent properties of the nucleic acids. This parameter change eliminates the need for label incorporation steps and reduces manufacturing complexity and cost while maintaining detection effectiveness.
3Device complexity
If label-free detection is implemented, then cost and complexity are reduced, but detection sensitivity may be compromised
Solution Approach 1:
The nucleic acid molecules provide their own fluorescent signal without requiring external labels, achieving label-free detection that simplifies the system while maintaining sensitivity through the inherent fluorescent properties of the molecules themselves.
Solution Approach 2:
The detection approach changes from label-dependent to label-independent by utilizing the intrinsic fluorescent parameters of nucleic acids. This parameter change enables simplified label-free detection while preserving measurement precision through the natural fluorescent signal of the target molecules.
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 cost-effective and simplified detection of nucleic acid hybridization by utilizing changes in fluorescent intensity without the need for labels, providing a more efficient and economical diagnostic platform.
Implementation Method 1
providing a fluorescent polymeric matrix having a first fluorescent emission intensity; attaching a single stranded DNA or RNA species to said fluorescent matrix to provide a second, greater fluorescent intensity; and hybridizing said single stranded RNA or DNA to a homologous nucleic acid, causing a further increase in said fluorescent intensity
Data Source
AI summary
A method is provided for label free analysis of nucleic acid materials. In accordance with the present invention, a fluorescent material is provided having a certain fluorescence emission without nucleic acids attached thereto. The fluorescent material of the present invention, has a greater emission upon the binding of a single stranded nucleic acid and an even greater emission upon the binding of a double stranded nucleic acid allowing detection of double stranded binding without using a label attached to the DNA.