Polyphosphorolyzing Agents for Nucleic Acid Amplification Specificity
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Solution Overview
Problem
Existing methods for nucleic acid polymerization and amplification using polyphosphorolysis reactions are limited by the need for improved polyphosphorylating agents to enhance deblocking efficiency and specificity, particularly in detecting rare alleles and minimal residual disease.
Innovation Solution
The use of specific polyphosphorolyzing agents, such as triphosphates and tetraphosphates, in conjunction with enzymes like DNA polymerase, to activate blocked oligonucleotides and facilitate efficient extension and amplification of nucleic acids, including rare alleles, through polyphosphorolysis reactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional polyphosphorolysis methods are used for nucleic acid amplification, then amplification can be performed, but deblocking efficiency and specificity are insufficient leading to non-specific peaks and primer dimer formation
Solution Approach 1:
The patent changes the chemical parameters of the polyphosphorolysis reaction by using alternative polyphosphorolyzing agents (triphosphate, tetraphosphate, pyrophosphate) instead of conventional reagents. This parameter change improves both the specificity of the deblocking reaction and reduces non-specific background signals, thereby resolving the contradiction between reliability and ease of manufacture.
Solution Approach 2:
The patent introduces polyphosphorolyzing agents as intermediary substances that mediate the deblocking of dideoxynucleotide-terminated primers. These intermediaries enable efficient and specific removal of blocking groups, improving both the efficiency and specificity of the amplification process without requiring complex procedural changes.
2Measurement precision
If polyphosphorolysis reactions are used to amplify nucleic acids, then amplification of rare alleles is possible, but non-specific peaks and primer dimer formation occur reducing detection accuracy
Solution Approach 1:
The patent converts the potentially harmful non-specific binding and primer dimer formation into beneficial specific amplification by using polyphosphorolyzing agents that preferentially act on correctly annealed primer-template complexes. This transforms the harmful non-specific background into a benefit where only specific targets are amplified, improving detection accuracy for rare alleles.
Solution Approach 2:
By changing the chemical parameters of the reaction system to include specific polyphosphorolyzing agents (triphosphate, tetraphosphate, or pyrophosphate), the patent alters the reaction kinetics and specificity. This parameter change suppresses harmful non-specific peaks and primer dimers while enhancing specific signal detection, thereby improving measurement precision.
3Productivity
If dideoxynucleotide blocking is used to enable allele-specific amplification, then rare allele detection is facilitated, but deblocking efficiency needs improvement for optimal performance
Solution Approach 1:
The patent uses polyphosphorolyzing agents as intermediaries to efficiently remove dideoxynucleotide blocking groups from primers. These intermediaries catalyze the deblocking reaction, improving amplification productivity by ensuring complete and efficient removal of blocking groups, which enables optimal primer extension and nucleic acid amplification.
Solution Approach 2:
The patent optimizes deblocking efficiency by changing the chemical parameters of the polyphosphorolysis reaction through the use of triphosphate, tetraphosphate, or pyrophosphate. This parameter optimization ensures complete deblocking of primers, thereby maximizing amplification productivity and overall reaction efficiency.
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 improves the specificity and efficiency of nucleic acid amplification, reducing non-specific peaks and primer dimer formation, and enables effective detection of rare alleles and minimal residual disease markers.
Implementation Method 1
polymerization of nucleic acids using activation by polyphosphorolysis (APP) reactions
Data Source
AI summary
This disclosure relates to methods of performing activation by polyphosphorolysis (APP) reactions using at least one of the polyphosphorylating agents triphosphate, polyphosphate, imidodiphosphate, thiodiphosphate (or μ-monothiopyrophosphate), and related compounds.