Microfluidic Pipeline for Single Virus Isolation and Sequencing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for analyzing viruses are unable to isolate and sequence individual viruses due to their small size and the heterogeneity of viral populations, leading to loss of important information about small but potentially relevant subpopulations.
Innovation Solution
A microfluidic pipeline is used to encapsulate and amplify single viral genomes within droplets, allowing for their extraction and sequencing at a single-virus level, using two immiscible flows to separate and manipulate individual viruses without cross-contamination, enabling high-throughput analysis of viral sequence diversity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional manipulation methods (micromanipulation, laser capture microdissection) are used, then manipulation capability is achieved, but resolution is beyond the scale of viruses (cannot isolate single viruses)
Solution Approach 1:
The patent divides the viral population into individual droplets, each containing a single virus or viral genome. This segmentation allows manipulation and analysis at the single-virus level, overcoming the resolution limitation of conventional methods while maintaining practical applicability through standardized droplet processing protocols.
Solution Approach 2:
The patent introduces droplets as an intermediary carrier that encapsulates single viruses or viral genomes. This intermediary enables the use of conventional manipulation tools to handle entities at the single-virus scale, as the droplets provide a manageable format that bridges the gap between conventional tool capabilities and viral size requirements.
2Measurement precision
If current detection tools (fluorescence detection, impedance detection) are used, then detection capability is achieved, but signal strength from single viruses is too weak to recognize
Solution Approach 1:
The patent performs preliminary amplification of the viral genome within the droplet before detection. By amplifying the target sequence in advance, the signal strength is boosted to levels detectable by conventional tools, while the droplet encapsulation maintains single-virus isolation to prevent contamination.
Solution Approach 2:
The patent creates multiple copies of the viral genome through amplification within each droplet. This copying process generates sufficient signal intensity for detection while maintaining the original single-virus isolation, as each droplet contains amplified copies derived from a single viral template.
3Productivity
If average response measurement techniques are used, then population-level analysis is achieved, but information about small but potentially relevant subpopulations is lost
Solution Approach 1:
The patent segments the viral population into individual droplets, each representing a single virus or viral genome. This segmentation enables high-throughput processing of individual viruses while preserving their unique characteristics, allowing detection of rare variants and subpopulations that would be lost in average measurements.
Solution Approach 2:
The patent applies local quality analysis by examining the genetic characteristics of individual viruses within their respective droplets. This approach maintains the unique properties of each virus (local quality) while processing them in parallel at high throughput, revealing diversity and rare variants that population averages would mask.
4Adaptability or versatility
If single-cell manipulation techniques are adapted for viruses, then single-entity analysis capability is achieved, but the techniques fail due to viral small size
Solution Approach 1:
The patent uses droplets as an intermediary that bridges single-cell manipulation techniques and viral-scale entities. The droplets provide a format that can be handled by conventional tools while encapsulating single viruses, making the manipulation process feasible despite the small size of the target virus.
Solution Approach 2:
The patent creates amplified copies of the viral genome within droplets, transforming the target from a single-virus scale problem to a multi-copy solution. This copying enables the use of established single-cell manipulation protocols while maintaining single-virus isolation and analysis capability.
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 allows for the detection of key genetic information, such as antiviral resistance mutations, at a single-virion level, facilitating the identification of important variants with low prevalence in a population.
Implementation Method 1
two immiscible flows can be used to encapsulate a single virus in a single droplet with uniform size distribution
Implementation Method 2
the movement of each droplet is separated by the carrier oil; single viruses can be processed within the droplets without any cross-contamination
Data Source
AI summary
The subject invention pertains to a microfluidic pipeline which enables isolation and analysis of single viruses. Single viruses are encapsulated and manipulated within microfluidic droplets. The subject invention further pertains to the amplification of single viral genomes are amplified and confined within the droplets, followed by extraction and isolation of the single-droplet contents for sequencing analysis.