Blocking Agents for Nucleic Acid Processing Control
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Solution Overview
Problem
Current methods for nucleic acid processing, such as PCR and sequencing, face challenges in efficiently processing and isolating nucleic acids within reaction environments, particularly in maintaining accurate control over separate environments in droplets or wells.
Innovation Solution
The use of blocking agents in a reaction mixture comprising a first nucleic acid molecule with a target sequence, a second nucleic acid molecule with a blocking agent and a functional sequence capable of coupling to the first nucleic acid molecule, and an enzyme to generate a third nucleic acid molecule incorporating the target sequence and the sequence of the second nucleic acid molecule.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If blocking agents are used in nucleic acid processing reactions, then reaction control and specificity are improved, but reaction complexity increases
Solution Approach 1:
The blocking agent acts as an intermediary molecule that temporarily occupies a site on the nucleic acid template, preventing unintended enzyme binding or reaction. This mediator enables precise control over the nucleic acid processing reaction by selectively blocking specific regions, thereby improving reaction control accuracy while managing the added complexity through a well-defined molecular mechanism.
2Measurement precision
If nucleic acid molecules are processed in separate partitions, then processing specificity is improved, but processing efficiency decreases
Solution Approach 1:
The reaction system is segmented into discrete partitions (such as droplets or wells) that physically separate multiple nucleic acid processing reactions. This segmentation enables simultaneous independent processing of multiple samples, maintaining high specificity for each partition while improving overall productivity through parallel processing. Each partition contains specific reagents and templates tailored to particular processing requirements.
3Reliability
If blocking agents are used to prevent unwanted binding, then reaction reliability is improved, but manufacturing complexity increases
Solution Approach 1:
The blocking agents are designed as disposable components that are incorporated into the reaction mixture in pre-formed complexes or as easily added reagents. These temporary blocking molecules perform their specific function during the reaction and are then discarded or degraded, simplifying the overall manufacturing process while ensuring high reaction reliability through their temporary, controlled presence.
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 method enables efficient nucleic acid processing by generating a third nucleic acid molecule that combines the target sequence with the sequence of the second nucleic acid molecule, facilitating accurate and controlled nucleic acid amplification and analysis.
Implementation Method 1
the functional sequence is capable of hybridizing to the first nucleic acid molecule
Implementation Method 2
the third nucleic acid molecule is generated by nucleic acid amplification
Implementation Method 3
the nucleic acid amplification is a polymerase chain reaction
Implementation Method 4
the nucleic acid amplification is a primer extension reaction
Implementation Method 5
a first region comprising a blocking agent
Data Source
AI summary
Methods and systems for sample preparation techniques that prevent inhibition of reactions such as due to the presence of longer oligonucleotides are presented herein. The methods and systems provided herein allow amplification (e.g., whole genome amplification) and sequencing of chromatin accessible regions of single cells.