Surface Primer Utilization in Cluster Amplification
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Solution Overview
Problem
Current sequencing technologies inefficiently utilize surface primers, leading to suboptimal cluster brightness and read lengths, which limits the cost-effectiveness and quality of genome analysis.
Innovation Solution
The method involves immobilizing forward and reverse primers on a solid support, cleaving a subset of these primers, and subjecting the amplification products to partially denaturing conditions to facilitate hybridization and extension, allowing for increased utilization of primers and enhanced cluster density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If standard cluster amplification is used, then cluster density is achieved, but cluster brightness is suboptimal
Solution Approach 1:
The amplification process is divided into distinct phases: initial cluster formation using both forward and reverse primers, followed by selective cleavage of one primer type, and subsequent amplification using only the remaining primer. This segmentation allows optimization of brightness in the second phase without compromising the foundational cluster structure established in the first phase.
Solution Approach 2:
The method performs preliminary cluster formation and primer cleavage before the main amplification sequence. By pre-establishing clusters with both primers and then selectively removing one primer type, the system prepares the substrate for enhanced subsequent amplification that increases brightness while maintaining reliability.
2Length of moving object
If read length is increased, then more genetic information is obtained, but sequencing cost increases
Solution Approach 1:
The method enables continuous amplification cycles by maintaining clusters on the surface and performing iterative denaturation, annealing, and extension steps. This continuous process allows multiple reads to be obtained from the same cluster over time, effectively increasing read length while amortizing the cost across multiple data acquisitions from a single cluster.
Solution Approach 2:
The method discards one primer type after initial cluster formation but recovers the other primer for repeated use in subsequent amplification cycles. This selective retention and reuse of primers reduces reagent consumption costs while enabling extended sequencing reads from the same cluster population.
3Productivity
If primer utilization is increased, then amplification efficiency improves, but primer availability is limited
Solution Approach 1:
The method applies different qualities to different primers: one primer type (e.g., forward primers) is retained and reused for multiple amplification cycles, while the other primer type (e.g., reverse primers) is cleaved and discarded after initial cluster formation. This asymmetric treatment optimizes primer utilization efficiency by maximizing the use of the limiting reagent.
Solution Approach 2:
The method deliberately discards one primer type after its initial function of cluster nucleation, while recovering and reusing the other primer type for subsequent amplification cycles. This strategy increases overall amplification efficiency by ensuring that the retained primer is fully utilized across multiple cycles rather than being consumed in a single round.
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 results in brighter clusters with longer read lengths and improved sequencing robustness, significantly increasing the signal during synthesis and reducing sequencing costs.
Implementation Method 1
providing a solid support having a plurality of forward and reverse amplification primers immobilized thereon
Implementation Method 2
amplifying a template using the subset of primers on the support to produce a plurality of double-stranded nucleic acid molecules
Implementation Method 3
wherein a subset of the plurality of amplification primers comprises a cleavage site; cleaving the subset of primers at the cleavage site
Implementation Method 4
subjecting the cleaved strand to partially-denaturing conditions to facilitate hybridization of a portion of the non-immobilized strand
Data Source
AI summary
Presented herein are methods and compositions for enhancing utilization of surface primers during the surface amplification process. The methods are useful for surface amplification at improved densities. The methods and compositions provided herein enable creation of clusters which are brighter, but at the same densities as currently achieved using standard cluster amplification.