Single Cell Transfection Chip with Interchangeable Reagent Channels
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Solution Overview
Problem
Current transfection methods lack precision and efficiency in delivering nucleic acids into individual cells, particularly at the single cell level, and are limited in their ability to perform combinatorial genetic modifications.
Innovation Solution
A system comprising a cell transfection chip with microfluidic channels, a reagent dispenser, and an electrotransfection chamber that enables automated single cell transfection using electrical, physical, or chemical means, allowing for precise and combinatorial introduction of reagents, such as regulatory RNAs, via CRISPR-like processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional transfection methods are used, then nucleic acids can be introduced into cells, but precision and efficiency at the single cell level are insufficient
Solution Approach 1:
The system segments the transfection process into individual single-cell operations using microfluidic channels that isolate and manipulate cells one at a time. This segmentation enables precise control over each cell while maintaining high throughput through automated parallel processing of multiple cells across the chip.
Solution Approach 2:
The patent replaces traditional mechanical transfection methods with electrical fields for poration. The electroporation system uses controlled electrical pulses to create temporary pores in cell membranes, enabling more precise and efficient nucleic acid delivery compared to mechanical approaches.
2Measurement precision
If automated single cell transfection is implemented, then precision is improved, but device complexity increases
Solution Approach 1:
The microfluidic chip integrates multiple functions into a single device: cell loading, individual cell manipulation, reagent delivery, electrical poration, and post-transfection handling. This multi-functionality reduces the need for separate equipment while maintaining high precision through unified control architecture.
Solution Approach 2:
The system incorporates automated cell ejection and sorting mechanisms that operate without manual intervention. The microfluidic channels and electrical fields work together to automatically identify, manipulate, and process individual cells, reducing the need for complex manual操作 systems.
3Adaptability or versatility
If combinatorial genetic modification is performed, then research capability is enhanced, but reagent management complexity increases
Solution Approach 1:
The system adds a temporal dimension to reagent delivery by sequentially introducing different reagents to the same cell at different time points. This enables combinatorial genetic modification where multiple nucleic acids are delivered in a controlled sequence, expanding research capability without proportionally increasing physical complexity.
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
Enables precise and combinatorial transfection of cells, facilitating advanced cell biological studies by allowing controlled genetic modification on a single cell basis, enhancing the precision and efficiency of nucleic acid delivery.
Implementation Method 1
Transfection can be accomplished by poration, which is the opening of temporary pores in a cell membrane to allow a reagent such as nucleic to across the cell membrane and into a cell. Poration may be performed by an electrical pulse or other physical or chemical means.
Data Source
AI summary
Examples disclosed herein relate to single cell transfection with interchangeable reagent. The present disclosure relates generally to a device, method, and system for single cell transfection including a transfection chamber on a transfection chip. The example system may include a fluidic channel located on the transfection chip for guiding a cell towards the transfection chamber, the fluidic channel sized to allow no more than a single cell to arrive at the transfection chamber at a time. The example system may also include a reagent receiver located on the transfection chip guiding received reagent towards the transfection chamber and intersecting with the path of the fluidic channel.