Porous Membrane mtDNA Transfer for Low-Damage Cell Transfection
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Solution Overview
Problem
Current methods for transferring mitochondrial DNA (mtDNA) into cells are limited by low yield/throughput, limited cell type availability, contamination, unreliability, and difficulty in correlating specific mtDNA mutations to phenotypes, with existing transfection devices causing cell damage and having limited customization capabilities.
Innovation Solution
A transfection device with a porous membrane and a deformable fluid reservoir, using a configurable actuator to apply non-ballistic pressure for delivering isolated mitochondria carrying mtDNA, customizable for specific cell types, achieving high transfection efficiency and low cell damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If heat or electroporation is used for transfection, then genetic material can be delivered into cells, but cell damage occurs and transfection efficiency is limited
Solution Approach 1:
The patent replaces thermal and electrical transfection methods with a mechanical pressure-based system. A deformable membrane chamber applies controlled mechanical pressure to drive mtDNA into cells through porous membranes, eliminating the cell damage caused by heat and electroporation while maintaining effective transfection.
Solution Approach 2:
The patent changes the transfection parameters from extreme conditions (high heat, high voltage) to controlled mechanical parameters (pressure, pore size, membrane permeability). This allows gradual and controlled delivery of mtDNA into cells, improving cell survival while maintaining transfection efficiency.
2Productivity
If standard transfection devices are used, then transfection can be performed, but customization capabilities are limited and throughput is low
Solution Approach 1:
The patent divides the transfection system into modular components: deformable membrane chambers, porous membranes with selectable pore sizes, and configurable pressure systems. This segmentation allows independent optimization of each component for different cell types and experimental requirements, enabling both high throughput and customization.
Solution Approach 2:
The patent introduces dynamic controllability through adjustable pressure parameters, variable pore sizes, and configurable transfection durations. These dynamic parameters can be optimized for different cell types and mtDNA sizes, providing versatility while maintaining high throughput capability.
3Reliability
If mtDNA transfer methods are used, then mitochondrial DNA can be transferred into cells, but reliability is low and contamination occurs
Solution Approach 1:
The patent extracts and isolates pure mtDNA from donor cells before transfection, separating it from other cellular contaminants. The purified mtDNA is then delivered through controlled mechanical pressure into recipient cells, ensuring high reliability and minimizing contamination from proteins, lipids, and other cellular components.
Solution Approach 2:
The patent uses porous membranes as an intermediary structure that selectively allows mtDNA passage while blocking larger cellular contaminants. The membrane acts as a physical filter that ensures only purified nucleic acid materials are transferred into cells, improving reliability and reducing contamination.
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
The device enables tunable and customizable transfection of mtDNA into cells, producing engineered cells with optimized efficiency and minimal damage, suitable for generating cellular therapeutics to treat mitochondrial-associated diseases.
Implementation Method 1
using a configurable actuator to apply non-ballistic pressure for delivering isolated mitochondria carrying mtDNA
Implementation Method 2
A transfection device with a porous membrane and a deformable fluid reservoir
Data Source
AI summary
Devices and methods are presented for delivery of various macrostructures into cells, such as depleted cells as well as methods of generating engineered cells using said devices and methods. Cells are placed on a porous membrane. A force is applied by a configurable actuator to a deformable fluid reservoir that generates an applied pressure to macrostructures in a solution, causing the macrostructures to pass through the porous membrane and triggering uptake of at least some of the macrostructures into the cells to form transfected cells. Said devices and methods may be used in a process to replace defective endogenous mtDNA with corrected mtDNA to generate cellular-based therapeutics for administration to a patient. The customizable actuator may be configured with parameters to optimize efficiency for a given cell type and material to be transfected. Machine learning techniques also may be utilized to optimize transfection parameters.