Patterned Solid Support for Library DNA Capture and Monoclonal Clusters
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current sequencing technologies face inefficiencies due to polyclonality, where multiple template polynucleotides seed too closely together, leading to lower data quality and increased noise, as they do not effectively utilize the available substrate surface for monoclonal clustering.
Innovation Solution
A patterned solid support with library DNA binding regions separated by interstitial regions, using capture moieties and orthogonal clustering oligonucleotides to ensure each binding region is occupied by a single library DNA complex, promoting monoclonality and minimizing polyclonality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If template polynucleotides are allowed to seed freely across the substrate surface, then the available surface area is maximized for sequencing, but polyclonality occurs when multiple template polynucleotides seed too closely together, reducing data quality
Solution Approach 1:
The substrate surface is divided into discrete binding regions separated by interstitial regions. Each binding region is designed to accommodate a specific number of capture moieties, creating spatial compartments that prevent template polynucleotides from seeding too closely together. This segmentation maintains high surface area utilization while ensuring monoclonal clusters through physical separation.
Solution Approach 2:
Different regions of the substrate are assigned different functions: binding regions contain capture moieties for template attachment, while interstitial regions are depleted of capture moieties to act as barriers. This local differentiation ensures that templates seed only in appropriate locations with sufficient spacing, preventing polyclonality while maximizing usable surface area.
2Productivity
If more capture moieties are used to increase seeding density, then more template polynucleotides can be captured, but polyclonality increases as multiple templates seed in the same binding region
Solution Approach 1:
Binding regions are designed with a specific capacity for capture moieties that is intentionally limited to accommodate only the desired number of template polynucleotides (e.g., 1-3 templates per region). This controlled partial action prevents excessive seeding that would lead to polyclonality, while still capturing sufficient templates for high productivity across the entire substrate.
Solution Approach 2:
The substrate surface is replicated with numerous identical binding regions, each with controlled capture moiety capacity. This replication allows high overall template capture across the substrate while maintaining monoclonality within each individual region, as each region independently limits template number through its designed capture moiety capacity.
3Manufacturing precision
If template polynucleotides are spaced further apart to ensure monoclonality, then cluster separation is improved, but the effective substrate surface area for sequencing decreases
Solution Approach 1:
Instead of increasing spacing in a way that reduces overall surface utilization, the design uses the dimensional structure of discrete binding regions with interstitial barriers. This creates an efficient packing arrangement where monoclonality is achieved through regional confinement rather than excessive spacing, maximizing the fraction of substrate area that is productively used for sequencing.
Solution Approach 2:
The substrate is segmented into tightly packed binding regions separated by narrow interstitial barriers. This segmentation achieves monoclonality through confinement within small regions rather than through large spacing between templates, thereby maximizing the proportion of substrate area that contributes to sequencing while maintaining adequate template separation.
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
Improves monoclonality, enhances signal intensity, and increases sequencing data quality by ensuring each binding region is occupied by a single library DNA complex, thereby optimizing the use of substrate surface area.
Implementation Method 1
each library DNA binding region comprises a number of capture moieties adapted for capturing a single library DNA complex
Implementation Method 2
at least a portion of the interstitial regions comprise clustering oligonucleotides
Data Source
AI summary
Embodiments of the present disclosure relate to methods of capturing library DNA complexes to the patterned surface of the solid support for sequencing. The methods described herein improve the monoclonality of clusters and sequencing data quality and read length.