Microfluidic Chip Cell Transduction via Hydrogel Diffusion
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Solution Overview
Problem
Conventional cell transduction methods using centrifugal force cause cell stress and require large volumes of viral vectors, leading to increased costs and low transduction efficiency.
Innovation Solution
A microfluidic chip-based method involving a hydrogel chamber with encapsulated target cells and a microfluidic channel for viral particle flow, eliminating centrifugal force-induced stress and enabling high multiplicity of infection with reduced viral vector volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If centrifugal force is used for transduction, then transduction can be achieved, but cell stress occurs and cell viability decreases
Solution Approach 1:
The patent replaces the mechanical centrifugal force system with a microfluidic flow system. Viral particles are delivered through microfluidic channels that allow passive diffusion and advection into cells, eliminating the need for centrifugal separation and the associated mechanical stress on cells.
Solution Approach 2:
The patent introduces a hydrogel matrix as an intermediary medium. The hydrogel contains the target cells and allows viral particles to diffuse through its porous structure, facilitating controlled viral delivery without requiring direct mechanical force application to the cells.
2Reliability
If large volume of viral vectors is used, then sufficient gene transfer is achieved, but cost increases
Solution Approach 1:
The patent utilizes the porous structure of the hydrogel matrix to enable efficient viral particle diffusion. The porous network allows viral vectors to penetrate and reach target cells through concentration gradients and diffusion, achieving effective transduction with reduced viral vector volumes compared to conventional methods.
Solution Approach 2:
The patent employs microfluidic hydraulic flow systems to deliver viral particles. By controlling fluid flow rates and pressures through microfluidic channels, the system achieves efficient viral delivery and gene transfer while minimizing the total volume of viral vectors required.
3Reliability
If standard transduction system is used, then transduction can be performed, but minimum volume requirement increases cost
Solution Approach 1:
The patent transitions from conventional two-dimensional plate-based transduction systems to a three-dimensional hydrogel-based microfluidic system. This dimensional change allows for reduced reagent volumes while maintaining transduction capability, as the microfluidic channels and hydrogel matrix enable efficient viral diffusion and cell contact in a compact three-dimensional architecture.
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 cell viability and transduction efficiency by reducing cell stress and minimizing viral vector usage, effectively transducing immune cells like NK cells with high precision and low cost.
Implementation Method 1
contacting viral particles with the target cells in the hydrogel
Implementation Method 2
The passing may be performed by microfluid flow
Data Source
AI summary
Provided are a cell transduction method and a microfluidic chip for cell transduction. According to the present disclosure, since traits are introduced using a microfluidic-based method, it is possible to avoid cell stress induced by strong centrifugal force and to achieve a high multiplicity of infection (MOI) even with a small volume, thereby being efficiently used for cell transformation.