Capture Beads with Nested Identification for Spatial mRNA Correlation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current assay technologies fail to correlate mRNA captured during cellular perturbation assays back to the specific examination area where the assay was conducted, limiting the collection of dynamic and static changes in cellular functionality, and thus, providing incomplete information on the impact of perturbation elements on cells.
Innovation Solution
The use of capture beads with unique detectible labels and capture bead indices that can be correlated to specific examination areas, allowing for the capture and sequencing of nucleic acids and other cellular components, enabling the correlation of sequencing data back to the examination area of origin, and incorporating additional information such as assay conditions and technician details.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If conventional capture beads are used without unique identifiers, then the assay can be conducted with simpler bead structures, but the captured mRNA cannot be correlated back to the specific examination area where the assay was conducted
Solution Approach 1:
The capture bead incorporates multiple nested levels of identification: the bead itself contains a unique identifier, which is linked to an examination area identifier, which in turn is linked to the specific well location in the assay device. This nested structure allows comprehensive tracking of mRNA from capture through sequencing without requiring a completely separate identification system.
Solution Approach 2:
The system creates a molecular copy (mRNA sequence) that contains encoded information about its origin. The mRNA is transcribed from the genome in a specific examination area, and through the use of indexed oligonucleotides and unique identifiers on capture beads, a digital copy of the spatial and contextual information is created that can be read during sequencing to reconstruct the origin of each captured mRNA molecule.
2Loss of information
If multiple pieces of information are collected about cellular changes, then a more comprehensive understanding of perturbation impact is achieved, but the difficulty of detecting and measuring increases
Solution Approach 1:
The capture bead system serves multiple functions simultaneously: it captures mRNA through hybridization, provides unique identification of the capture event, links to the examination area through indexed oligonucleotides, and enables sequencing. This multi-functional design consolidates what would otherwise require separate systems into a single integrated platform.
Solution Approach 2:
The invention merges several distinct information streams into a single correlated dataset: spatial information (well location), contextual information (examination area conditions), and molecular information (mRNA sequence) are all combined through the unique identifier system on the capture bead, allowing simultaneous analysis of multiple parameters without separate tracking systems.
3Measurement precision
If capture beads include unique detectible labels and indices, then correlation to examination areas is enabled, but the manufacturing complexity of the beads increases
Solution Approach 1:
The unique identifiers and indexed oligonucleotides are pre-attached to the capture beads during manufacturing, before the actual assay is performed. This preliminary action allows the complex identification system to be established once during bead production, rather than requiring complex operations during each individual assay, thereby reducing the manufacturing burden while maintaining high measurement precision.
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 enables a more comprehensive understanding of cellular changes induced by perturbation elements by correlating dynamic and static information, providing a complete picture of the impact on cellular functionality and allowing for the tracking of perturbation components back to their origin, thereby enhancing drug discovery processes.
Implementation Method 1
a detectible label or a set of detectible labels attached to the bead that uniquely identifies the capture bead
Implementation Method 2
a multiplicity of a capture element attached to the capture bead index... the nucleic acids released from the cell (after lysis) are captured
Data Source
AI summary
Disclosed are capture beads that are suitable for use in an assay device which is configured to correlate the capture bead to a specific examination area in the device as well as correlating any captured nucleic acid or other cellular components generated during the assay to that bead.