3D Polymer Scaffold for Nucleic Acid Sequencing
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Solution Overview
Problem
Current nucleic acid sequencing methods face limitations in achieving high resolution and information density due to the diffraction limits of imaging systems, particularly in two-dimensional planes, which restricts the practical size of the field of view and total information content in each image.
Innovation Solution
The use of a spatially heterogeneous polymer scaffold with alternating polymer layers, each containing covalently-attached oligonucleotide primers and amplification products, allows for sequential sequencing by hybridizing sequencing primers to complementary sequences, enabling multi-dimensional detection and overcoming diffraction limits through optical sectioning techniques like confocal microscopy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If high numerical aperture microscope objectives are used to achieve high resolution, then resolution is improved, but the field of view size is limited
Solution Approach 1:
The patent transitions from two-dimensional imaging to three-dimensional imaging by stacking multiple polymer layers vertically. Each layer contains spatially separated amplicon clusters, enabling high-resolution imaging within each focal plane while expanding the total information capacity through the third dimension (depth). This allows the system to maintain high resolution for each layer while effectively increasing the overall field of view capacity.
2Quantity of substance
If cluster density is increased to improve sequencing capacity, then information content is improved, but imaging resolution deteriorates due to diffraction limits
Solution Approach 1:
By organizing amplicon clusters across multiple vertically stacked polymer layers, the system distributes high-density information across the third dimension. Each individual layer maintains sufficient cluster spacing for diffraction-limited imaging, while the cumulative information capacity increases with the number of layers, effectively decoupling density from resolution.
Solution Approach 2:
The patent divides the sequencing sample into multiple discrete polymer layers, each containing a subset of amplicon clusters. This segmentation allows each layer to be imaged at optimal resolution while the collective set of layers provides high total information content, overcoming the trade-off between density and resolution.
3Quantity of substance
If the field of view size is increased to capture more information, then information content is improved, but resolution deteriorates
Solution Approach 1:
The patent resolves this contradiction by moving from a single large two-dimensional field of view to multiple smaller two-dimensional fields of view stacked in three dimensions. Each focal plane maintains high resolution appropriate for its size, while the vertical stacking of multiple planes collectively provides expanded information capacity.
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 nucleic acid sequencing by increasing resolution and information density, enabling efficient detection of polynucleotides within a three-dimensional matrix, thereby improving sequencing capabilities beyond traditional diffraction limits.
Implementation Method 1
sequential sequencing by hybridizing a first sequencing primer to the complementary sequence in the first polymer layer, and performing a plurality of sequencing cycles
Implementation Method 2
enabling multi-dimensional detection and overcoming diffraction limits through optical sectioning techniques like confocal microscopy
Implementation Method 3
The maximum resolving power of imaging systems is limited by factors such as diffraction
Data Source
AI summary
Disclosed herein, inter alia, are compositions and methods for detecting polynucleotides within a three-dimensional matrix.