Solid Phase Nucleic Acid Amplification for Cluster Density
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Solution Overview
Problem
Current nucleic acid amplification techniques for next-generation sequencing struggle to maximize the density and sequenceability of amplifiable clusters on solid surfaces, limiting the efficiency of genetic analysis.
Innovation Solution
A substrate with overlapping amplification clusters, where one cluster includes amplicons with a sequencing primer binding sequence and another without, allowing for simultaneous amplification and sequencing of different polynucleotide populations using adapter sequences and immobilized oligonucleotides.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If traditional nucleic acid amplification techniques are used on solid surfaces, then amplification can be achieved, but cluster density and sequenceability are limited
Solution Approach 1:
The invention divides the amplification process into two distinct phases: (1) a first amplification phase that generates high-density clusters including both sequenceable and non-sequenceable amplicons, and (2) a second selective amplification phase that enriches for sequenceable clusters. This segmentation allows optimization of each phase for its specific purpose, resolving the contradiction between achieving high density and maintaining sequenceability.
Solution Approach 2:
The method performs preliminary amplification to generate high-density clusters before applying selection criteria. By first maximizing cluster formation and then selectively amplifying sequenceable clusters in a second phase, the invention ensures that high initial density is achieved while subsequent selection maintains sequenceability for downstream applications.
2Quantity of substance
If overlapping amplification clusters are generated, then cluster density increases, but differentiation and detection of individual clusters becomes more difficult
Solution Approach 1:
The invention applies local quality by making sequenceable clusters distinct from non-sequenceable clusters through the presence of specific adapter sequences. This local differentiation allows overlapping clusters to be distinguished and selectively amplified based on their specific molecular characteristics, resolving the detection difficulty while maintaining high density.
Solution Approach 2:
The invention uses adapter sequences as intermediaries that provide detectable markers on sequenceable clusters. These adapters serve as mediators that enable differentiation and selective amplification of sequenceable clusters among the overlapping high-density cluster population, solving the detection problem while maintaining density.
3Productivity
If selective amplification of sequenceable clusters is performed, then sequencing efficiency improves, but additional amplification steps increase process complexity
Solution Approach 1:
The invention uses universal adapter sequences that can be recognized by the same polymerase and amplification conditions as the initial amplification. This multi-functionality allows the selective amplification step to use the same basic machinery and reagents as the first amplification, improving sequencing efficiency while minimizing the increase in protocol complexity.
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 enhances cluster density and sequenceability, enabling more efficient detection and analysis of genetic information by separating active and inactive clusters, thereby improving the depth and accuracy of sequencing results.
Implementation Method 1
forming a first complex including the first polynucleotide hybridized to a first oligonucleotide, and contacting the solid support with a second polynucleotide not including a sequencing primer binding sequence (e.g., a synthetic sequence), and forming a second complex including the second polynucleotide hybridized to a second oligonucleotide
Implementation Method 2
extending the first oligonucleotide and the second oligonucleotide with a polymerase, thereby generating immobilized complements of the first oligonucleotide and the second oligonucleotide
Data Source
AI summary
Disclosed herein, inter alia, are methods and compositions for amplifying and sequencing a plurality of template nucleic acids.