Sequence-Specific Polynucleotide Labeling for Integration-Site Mapping
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Solution Overview
Problem
Current techniques for detecting and characterizing polynucleotides, particularly extragenomic material integrated into host genomes, suffer from low accuracy in quantifying copy numbers and mapping locations, leading to challenges in diagnosing diseases associated with genetic abnormalities and variations.
Innovation Solution
A method involving sequence-specific labeling of polynucleotides, followed by linearization and pattern detection, allows for precise identification of integration sites, copy numbers, and phylogenetic relationships of extragenomic elements within host genomes, using nanotechnology for enhanced analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If current techniques are used for detecting and characterizing polynucleotides, then the process is simpler, but the accuracy in quantifying copy numbers and mapping locations is low
Solution Approach 1:
The patent segments the polynucleotide analysis process into distinct stages: extraction of polynucleotides, amplification of target sequences, sequence-specific labeling with multiple labels, and pattern detection. This segmentation allows each stage to be optimized independently, improving measurement precision while managing overall process complexity through systematic organization of complex steps.
Solution Approach 2:
The patent employs sequence-specific labeling with multiple labels at different positions along the polynucleotide chain, creating unique labeling patterns that serve as identifiers. This parameter change from single-label to multi-label systems enables precise quantification of copy numbers and accurate mapping of integration locations, directly addressing the measurement precision challenge.
2Manufacturing precision
If sequence-specific labeling with multiple labels is used, then identification precision of integration sites and copy numbers improves, but the complexity of the labeling and detection process increases
Solution Approach 1:
The patent applies sequence-specific labeling where different labels are positioned at specific locations along the polynucleotide chain based on their sequence characteristics. This local quality approach ensures that each region of the polynucleotide receives appropriate labeling, enabling precise identification of integration sites and accurate determination of copy numbers through the unique spatial arrangement of labels.
Solution Approach 2:
The patent introduces labeled polynucleotides as intermediaries between the target extragenomic elements and the detection system. These labeled intermediaries carry sequence-specific information through their labeling patterns, mediating the transfer of structural and compositional information to the detection system, thereby improving identification precision while managing detection complexity.
3Reliability
If detailed characterization of extragenomic elements is performed, then disease diagnosis accuracy improves, but the time and resources required for analysis increase
Solution Approach 1:
The patent performs preliminary amplification of target polynucleotide sequences before labeling and detection. This preliminary action enriches the sample with target sequences, ensuring that subsequent labeling and pattern detection steps can be performed efficiently on sufficient material, thereby improving diagnostic reliability while reducing the time needed for actual characterization.
Solution Approach 2:
The patent creates multiple copies of target polynucleotide sequences through amplification and generates multiple labeled versions through the labeling process. This copying approach ensures that sufficient labeled polynucleotides are available for reliable pattern detection and statistical analysis, improving diagnostic accuracy while enabling parallel processing that reduces overall analysis time.
Data Source
AI summary
According to some embodiments herein, methods and kits for labeling and analyzing nucleic acids are provided. In some embodiments, sequence-specific labeling is performed on polynucleotide sequences associated with a host genome, and the presence or absence of patterns characteristic of extragenomic sequences are determined.