Dynamic Flux Nucleic Acid Amplification for Sequence Variation Detection
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Solution Overview
Problem
Current methods for detecting nucleic acid sequence variations associated with drug resistance or sensitivity are limited by the need for foreknowledge of specific mutations, often overlooking new or uncharacterized variations, and are not suitable for rapid, affordable, and reliable detection across a wide range of organisms.
Innovation Solution
The development of dynamic flux nucleic acid sequence amplification methods that involve amplifying DNA segments using PCR and high-resolution melting curve analysis with DNA-binding fluorescent dyes to detect sequence variations, allowing for the identification of responsiveness to drugs without prior knowledge of specific mutations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional nucleic acid detection methods are used, then detection can be performed with established protocols, but detection is limited to known mutations and cannot identify new or uncharacterized sequence variations
Solution Approach 1:
The patent extracts the detection of sequence variations from the constraint of pre-defined mutation knowledge. By using high-resolution melting curve analysis, the method isolates and detects any sequence variation regardless of whether it was previously characterized, thereby taking out the limitation of requiring foreknowledge of specific mutations.
Solution Approach 2:
The patent creates a universal detection method that can identify any nucleic acid sequence variation across different microorganisms and drug resistance contexts. The high-resolution melting curve analysis serves multiple functions: detecting known mutations, discovering new variations, and applying to various organisms without requiring method modification.
2Measurement precision
If high-resolution melting curve analysis is used, then sequence variations can be detected with high precision, but the method requires dynamic flux temperature control within a narrow range
Solution Approach 1:
The patent implements dynamic flux temperature control where the temperature is continuously adjusted during the melting curve analysis. The temperature increases at a controlled rate through the narrow transition range, allowing the system to dynamically track and detect the precise melting point shifts that indicate sequence variations, thereby achieving high measurement precision despite the narrow temperature window.
Solution Approach 2:
The patent changes the temperature parameter dynamically during the analysis to optimize detection. By controlling the rate of temperature increase and holding at specific points, the method maximizes the resolution of melting curve transitions, enabling detection of single base pair mismatches through subtle changes in the melting profile.
3Quantity of substance
If PCR amplification is used to amplify DNA segments, then sufficient template material can be obtained for analysis, but the amplification process requires specific temperature cycling that may overlook novel variations
Solution Approach 1:
The patent performs preliminary PCR amplification to generate sufficient template DNA before conducting the high-resolution melting curve analysis. This preliminary action ensures there is enough material for detection while the subsequent melting analysis remains unbiased toward any specific mutation type, allowing novel variations to be detected without having been pre-selected during amplification.
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
These methods enable accurate detection of single base pair mismatches and provide a rapid, affordable, and reliable means to determine drug responsiveness in microorganisms, including Mycobacterium tuberculosis, by identifying sequence variations indicative of drug sensitivity or resistance.
Implementation Method 1
amplifying DNA segments using PCR
Implementation Method 2
PCR amplification generally comprises the steps of initial denaturation, annealing, polymerization, and final extension
Implementation Method 3
high-resolution melting curve analysis with DNA-binding fluorescent dyes to detect sequence variations
Implementation Method 4
high-resolution melting curve analysis
Data Source
AI summary
Provided herein are dynamic flux nucleic acid sequence amplification methods. The dynamic flux nucleic acid sequence amplification methods described herein are capable of amplifying nucleic acid sequences within a narrow temperature range. In some aspects, the disclosure provides for real-time dynamic flux nucleic acid sequence amplification methods.