Acoustothermal Gene Transfection for Low-Toxicity Cell Permeabilization
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Solution Overview
Problem
Current non-viral gene transfection methods face challenges such as difficulty in excretion from the body, high toxicity, and low efficiency on certain cells, which existing technologies have not adequately addressed, limiting their practical application in gene therapy.
Innovation Solution
A gene transfection system utilizing an acoustothermal module with a piezoelectric substrate, interdigital transducers, and PDMS sound-absorbing vessels to create a temperature gradient field, precisely controlling cell membrane pores for efficient nucleic acid delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electroporation or cationic liposome methods are used for gene transfection, then gene delivery can be achieved, but toxicity increases and safety decreases
Solution Approach 1:
The patent replaces mechanical/electrical transfection methods (electroporation) and chemical transfection methods (cationic liposomes) with an acoustic field-based transfection system. The acoustic waves create controlled temperature gradients that facilitate gene delivery without the toxic side effects of traditional methods, thus improving safety while maintaining transfection reliability.
Solution Approach 2:
The patent utilizes temperature as a controllable parameter to achieve gene transfection. By precisely controlling the temperature gradient through acoustic heating, the system creates optimal conditions for gene delivery without the harmful effects of high-energy electrical fields or toxic chemicals, resolving the contradiction between effectiveness and safety.
2Reliability
If high energy is applied in non-viral transfection methods, then transfection can be achieved, but safety decreases and toxicity increases
Solution Approach 1:
The patent substitutes high-energy electrical fields (electroporation) with acoustic energy that can be more precisely controlled and localized. The acoustic waves generate heat in a controlled manner through the temperature gradient, achieving transfection without the uncontrolled high-energy damage associated with traditional methods.
Solution Approach 2:
The patent creates a localized temperature gradient through acoustic heating, concentrating the energy effect precisely where needed (in the region with the temperature gradient) while keeping surrounding areas unaffected. This localized approach maintains transfection efficiency while minimizing overall energy-related harm and toxicity.
3Reliability
If traditional non-viral transfection methods are used, then gene delivery is possible, but excretion from the body becomes difficult
Solution Approach 1:
The patent uses temperature gradient as a controllable parameter to enhance gene delivery efficiency. By optimizing the temperature conditions through acoustic heating, the system improves cellular uptake of genes while using non-viral vectors that are more readily excreted from the body, thus resolving the excretion difficulty issue.
4Reliability
If existing non-viral transfection methods are applied, then transfection can occur, but efficiency on primary immune cells is low
Solution Approach 1:
The patent employs temperature gradient control through acoustic heating to optimize transfection conditions for difficult-to-transfect cell types like primary immune cells. The controlled thermal environment enhances cellular permeability and gene uptake efficiency without damaging the cells, thereby improving productivity on these specific cell types.
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 system enhances transfection efficiency by increasing the permeability of recipient cells, reducing costs, and improving safety and scalability, making it a viable alternative for practical gene therapy applications.
Implementation Method 1
a piezoelectric substrate, an acoustothermal chip arranged on the piezoelectric substrate
Implementation Method 2
N sound-absorbing vessels arranged on the acoustothermal chip... with the acoustic wave signal, a temperature gradient field is established in the sound absorbing vessels
Implementation Method 3
with the temperature gradient field, the temperature of the recipient cells in the sound-absorbing vessels can be precisely controlled, so that the pores are opened on the membranes of the recipient cells
Data Source
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AI summary
The present invention provides a gene transfection system and method. The gene transfection system includes an acoustothermal module (10) and a signal generating module (20); the acoustothermal module (10) includes a piezoelectric substrate (11), an acoustothermal chip (13) arranged on the piezoelectric substrate (11) and N sound-absorbing vessels (13) arranged on the acoustothermal chip (12) and used for cultivating recipient cells, and N is an integer greater than or equal to 1; the signal generating module (20) is used to output basic frequency signals; the acoustothermal chip (12) is used to convert the basic frequency signal to an acoustic wave signal, establish a temperature gradient field with the acoustic wave signal, and control the temperature of the recipient cell in the sound-absorbing vessels with the temperature gradient field, so that the pores are opened on the membranes of the recipient cell, and the nucleic acids or other substances can go into the cells through these pores. The present invention can solve the existing problems in the current non-viral transfection methods, such as being difficult to be excreted from the body, high energy, high toxicity, and low efficiency on certain types of cells, etc., and the present invention can reduce cost and thereby improve the practicability of the gene therapy compared with the traditional gene transfection methods.