Micropurification Barrier Labeling for Precise Cell Isolation
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Solution Overview
Problem
Current methods for isolating specific cell types from histological samples are imprecise, labor-intensive, and costly, failing to meet the needs of modern molecular pathology and personalized medicine, particularly in handling tumor heterogeneity and requiring minimal human intervention.
Innovation Solution
A probe-based method that labels target cells with a protective barrier, allowing a micropurification solution to degrade or process non-target cells while preserving labeled cells, enabling high-precision isolation and recovery of specific cell populations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual scraping or micromanipulators are used to isolate cells, then spatial resolution is reduced and non-target cell types are captured, but the method is low cost and simple to perform
Solution Approach 1:
The patent introduces an intermediary protective barrier material that is deposited onto target cells before processing. This barrier acts as a mediator that protects target cells from degradation while allowing non-target cells to be removed, thereby achieving high spatial resolution without requiring complex manual manipulation devices
Solution Approach 2:
The patent replaces mechanical isolation methods (manual scraping, micromanipulators) with a chemical/biological approach using protective barriers and selective degradation. This substitution eliminates the need for complex mechanical devices while maintaining or improving spatial resolution
2Measurement precision
If laser capture microdissection or mesodissection is used to isolate cells, then spatial resolution and precision are improved, but the method becomes costly and labor-intensive
Solution Approach 1:
The patent employs a self-service mechanism where the protective barrier automatically protects target cells during the degradation process. The barrier is specifically deposited on target cells and selectively prevents degradation reagents from affecting them, enabling high-precision isolation without requiring manual intervention or complex instrumentation
Solution Approach 2:
The patent changes the chemical parameters of the isolation process by using selective degradation reagents that work in conjunction with the protective barrier. This allows parallel processing of multiple samples, significantly improving throughput compared to manual laser-based methods
3Manufacturing precision
If laser dissection instruments are used, then cellular level precision is achieved, but the system becomes expensive to purchase and maintain
Solution Approach 1:
The patent uses a disposable protective barrier material that is deposited on target cells and then consumed during the degradation process. This eliminates the need for expensive, complex laser dissection instruments, achieving high precision at minimal cost
Solution Approach 2:
The patent extracts the essential function of laser dissection (precise cell isolation) and separates it from the complex instrumentation. By using a protective barrier combined with selective degradation, the method achieves cellular-level precision without requiring expensive laser equipment
4Ease of operation
If manual dissection methods are used, then operator flexibility is maintained, but operator error and contamination risk increase
Solution Approach 1:
The protective barrier performs the selective protection function automatically based on its specific deposition on target cells. This self-service mechanism eliminates operator error and contamination risk while maintaining the flexibility to target different cell types by simply changing the labeling strategy
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
Achieves high-resolution, high-throughput isolation of target cells with minimal human intervention, reducing costs and complexity compared to existing techniques, suitable for various biological samples including formalin-fixed and paraffin-embedded tissues.
Implementation Method 1
A biological sample comprising cells is labeled with a probe that directly carries or produces a protective barrier that is deposited onto the cells to which the probe is bound
Implementation Method 2
A micropurification solution is applied to the biological sample that selectively degrades or differentially processes (e.g., contains an RNase that degrades RNA) cells or cellular components not covered by the protective barrier
Data Source
AI summary
Methods, techniques, and kits are provided herein for purifying cells using molecular targeting, at a cellular or subcellular level. The techniques comprise labeling a biological sample comprising cells with a probe capable of producing a protective barrier. The barrier is deposited onto the surface of the labeled cells or structures, to protect and retain the biological material under the barrier. A micropurification solution is applied to the biological sample, wherein the micropurification solution degrades, digests, or otherwise processes cells not covered by the barrier, allowing isolation of the target cells. In some aspects, a plurality of probes, each specific to a different target, may be used. The techniques may be performed without the need for complex instrumentation involving microscopy.