Nanoparticle-Mediated Delivery into Plant Cells
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Solution Overview
Problem
Current methods for delivering molecules into plant cells with cell walls are invasive and inefficient, particularly for proteins and small molecules, lacking effective non-invasive technologies for intact plant cells or tissues.
Innovation Solution
The use of nanoparticles, such as gold and quantum dots, coated with molecules of interest, which are placed in contact with plant cells to facilitate non-invasive uptake across the cell wall, allowing for the delivery of DNA, proteins, and other substances into plant cells with intact cell walls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If invasive methods (gene gun, microinjection, electroporation, Agrobacterium) are used to deliver molecules into plant cells with cell walls, then delivery efficiency is improved, but cell integrity and non-invasiveness deteriorate
Solution Approach 1:
The patent uses nanoparticles as intermediary carriers to deliver molecules into plant cells. The nanoparticles attach to molecules of interest (DNA, proteins, small molecules) and facilitate their uptake through the cell wall and cell membrane without requiring invasive procedures. This mediator approach enables efficient delivery while preserving cell integrity.
Solution Approach 2:
The patent replaces mechanical invasive methods (physical penetration by gene gun, microinjection needles, electroporation fields) with a chemical/biological approach using nanoparticle-mediated uptake. The nanoparticles exploit natural cellular uptake mechanisms rather than forcing entry through mechanical means, thereby maintaining cell integrity while achieving delivery.
2Object-affected harmful factors
If nanoparticle delivery is used for plant cells with intact cell walls, then non-invasiveness is improved, but delivery efficiency deteriorates
Solution Approach 1:
The patent optimizes nanoparticle parameters including size (1-100 nm range), surface charge, and surface chemistry to enhance uptake efficiency. By adjusting these parameters, the nanoparticles can effectively penetrate the cell wall and membrane barriers while maintaining non-invasive delivery. The patent also optimizes concentrations and incubation conditions to maximize delivery efficiency.
Solution Approach 2:
The patent functionalizes nanoparticle surfaces with specific ligands, coatings, or charges that are tailored to interact with plant cell surfaces. This local modification of nanoparticle properties enables selective and efficient uptake by plant cells while preserving the integrity of cells that do not take up the nanoparticles.
3Ease of operation
If cell walls are stripped to enable nanoparticle delivery, then nanoparticle uptake is improved, but process complexity and time consumption increase
Solution Approach 1:
The patent enables plant cells to self-take up the nanoparticles through their natural cellular mechanisms without requiring external intervention to remove cell walls. The cells perform the uptake function themselves by internalizing the nanoparticles, eliminating the need for complex wall-stripping procedures and subsequent regeneration steps.
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 method enables the efficient and non-invasive delivery of molecules into plant cells, including those with intact cell walls, promoting gene expression and potential applications in genetic modification and trait introduction, such as herbicide resistance and disease resistance.
Implementation Method 1
the negative charge on the DNA backbone may be sufficiently distant so that attractive van der Waals forces between the bases and the gold nanoparticle are sufficient to cause plasmid DNA to be attached to the surface of the gold particle
Data Source
AI summary
Provided are methods for introducing a molecule of interest into a plant cell comprising a cell wall. Methods are provided for genetically or otherwise modifying plants and for treating or preventing disease in plant cells comprising a cell wall.