Magnetic Lysis Device Bead Disruption
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Solution Overview
Problem
Current cell lysis methods are not cost-effective, efficient, or compatible with integrated low-cost cell lysis/nucleic acid analysis systems, particularly for hardier bacteria and spores, as they often require detergents that interfere with downstream reactions and have variable lysis efficiencies.
Innovation Solution
A method involving the use of magnetic stir elements and cell lysis beads, such as polymer, glass, ceramic, or metal beads, to lyse cells and virus particles by stirring them at high speeds in a liquid medium, which allows for efficient cell disruption without the need for detergents or enzymes, and is compatible with integrated analysis systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If detergent-based methods are used for cell lysis, then ease of operation is improved, but harmful factors are introduced that interfere with downstream reactions
Solution Approach 1:
The patent extracts and eliminates detergents from the cell lysis system, replacing them with magnetic stir elements and beads that achieve lysis through mechanical means alone. This removes the harmful chemical factors while preserving the ease of operation through simple magnetic stirring.
Solution Approach 2:
The patent replaces chemical lysis mechanisms (detergents) with a physical mechanical system consisting of magnetic stir elements and beads. The mechanical force from magnetic stirring combined with bead bombardment achieves cell lysis without requiring harmful chemical additives.
2Productivity
If physical lysis methods such as sonication are used, then cell disruption efficiency is improved, but device complexity and cost increase
Solution Approach 1:
The patent employs inexpensive magnetic stir elements and beads that can be easily replaced, eliminating the need for expensive sonication equipment. The simple magnetic stirring apparatus is far cheaper than ultrasonic devices while achieving comparable or superior lysis efficiency.
Solution Approach 2:
The patent substitutes complex mechanical sonication systems with a simpler magnetic stirring mechanism. The magnetic stir element rotated by a simple motor replaces the need for ultrasonic transducers and complex acoustic field generation equipment.
3Productivity
If enzymatic lysis methods are used, then cell lysis efficiency is improved, but time consumption increases
Solution Approach 1:
The patent replaces slow enzymatic lysis processes with rapid mechanical lysis through magnetic stirring and bead bombardment. The physical mechanical action directly disrupts cell membranes without requiring the time-consuming enzymatic degradation process.
Solution Approach 2:
The patent changes the lysis mechanism from chemical/enzymatic parameters to physical mechanical parameters. By controlling stirring speed, bead size, and incubation time, the system achieves rapid lysis in minutes rather than the extended incubation times required for enzymatic methods.
4Adaptability or versatility
If detergent-based lysis is used for hardier bacteria and spores, then lysis coverage is improved, but harmful factors and time consumption increase
Solution Approach 1:
The patent removes detergents from the system entirely, achieving lysis of hardier bacteria and spores through mechanical means alone. The magnetic stir elements and beads provide sufficient force to disrupt tough cell walls without requiring chemical detergents that would interfere with downstream analysis.
Solution Approach 2:
The patent adjusts mechanical parameters such as stirring speed, bead size, and incubation time to achieve effective lysis of hardier organisms. By optimizing these physical parameters, the system achieves broad lysis coverage comparable to detergent-based methods without the harmful chemical interference.
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 provides efficient and cost-effective cell lysis, reducing the need for additives and simplifying downstream processing, while being compatible with automated systems and enabling rapid nucleic acid analysis.
Implementation Method 1
The magnetic stir element rotates at a speed sufficient and duration to lyse the cells
Implementation Method 2
stirring cells with a magnetic stir element in a container in the presence of a plurality of cell lysis beads
Implementation Method 3
cell lysis beads... to lyse cells and virus particles by stirring them at high speeds
Data Source
AI summary
A method for lysing cells is disclosed. The method includes stirring cells with a magnetic stir element in the presence of a plurality of cell lysis beads at a speed sufficient to lyse the cells. Also disclosed is a device for lysing cells. The device includes a container having a magnetic stir element and a plurality of cell lysis beads disposed therein. The container is dimensioned to allow rotation of the magnetic stir element inside the container.