Multiplex Nucleic Acid Detection via Color-Coded Probe Hybridization
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Solution Overview
Problem
Current methods for detecting nucleic acid molecules, especially for personalized medicine and genetic diagnostics, are limited in their ability to efficiently identify multiple target nucleic acids simultaneously with high specificity and sensitivity.
Innovation Solution
A method involving the use of multiple capture and probe molecules, each labeled with distinct detectable colors, which hybridize with target nucleic acids to form complexes that can be isolated and identified through imaging, allowing for the differentiation of various nucleic acid types based on unique color codes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple capture and probe molecules with distinct detectable colors are used to simultaneously detect multiple target nucleic acids, then the productivity and information content of the detection method is improved, but the device complexity and difficulty of detecting and measuring increases
Solution Approach 1:
The detection system is segmented into distinct functional components: capture molecules that bind to target nucleic acids and probe molecules that provide detectable color signals. Each component has a specific function, allowing simultaneous detection of multiple targets through modular design. The capture molecules can be solid supports or beads, while probes are labeled with different fluorescent colors, enabling parallel detection without overwhelming system complexity.
Solution Approach 2:
The capture and probe molecule system serves multiple functions simultaneously: specific binding to target sequences, signal generation through fluorescent labels, and multiplexing capability through color differentiation. The same basic molecular architecture can detect different nucleic acid targets by simply changing the sequence specificity and fluorescent label combination, making the system universally applicable to various diagnostic applications.
2Measurement precision
If multiple capture and probe molecules with distinct detectable colors are used to simultaneously detect multiple target nucleic acids, then the measurement precision and specificity are improved, but the difficulty of detecting and measuring increases
Solution Approach 1:
Different probe molecules are labeled with distinct fluorescent colors (e.g., FITC for green, TRITC for red, CY5 for blue-green) that emit at different wavelengths. When these probes bind to target nucleic acids, their color signals can be detected and differentiated by spectroscopic methods, providing high measurement precision. The color-coded system allows simultaneous quantification of multiple targets with high specificity.
Solution Approach 2:
The probe molecules act as intermediaries between the target nucleic acids and the detection system. Each probe contains a fluorescent label that converts the molecular binding event into an optical signal that can be measured by standard spectroscopic equipment. This intermediary approach simplifies the measurement process while maintaining high precision through wavelength-specific detection.
3Reliability
If captures and probes are designed with specific sequences complementary to target sequences, then the reliability and accuracy of target identification are improved, but the device complexity increases
Solution Approach 1:
The capture and probe molecules are designed with specific local properties: capture molecules have sequences complementary to specific regions of target nucleic acids, while probes have sequences that bind to different regions and carry fluorescent labels. This local specialization of function within the molecular system ensures high reliability of target identification while keeping the overall design manageable through modular sequence selection.
Solution Approach 2:
The capture and probe molecules are pre-designed and pre-labeled with specific sequences and fluorescent tags before the detection assay. This preliminary preparation allows the actual detection process to focus on hybridization and signal readout, improving reliability while reducing the complexity of real-time molecular design. The sequences are optimized in advance for specific target binding affinity and specificity.
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 enables the simultaneous detection and identification of multiple nucleic acid types, enhancing the specificity and sensitivity of genetic diagnostics and personalized medicine applications by maximizing the number of distinguishable types using permutations of colors.
Implementation Method 1
each capture contains a capture sequence that is complementary to a first target sequence in a target nucleic acid, and each probe contains a probe sequence that is complementary to a second target sequence in a target nucleic acid
Data Source
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AI summary
A method of identifying a target biological material by using captures and probes. Each capture is specific for a kind of target. Each probe is designed to distinguish the type of the target. The captures and probes are each labeled with one or more detectable labels.