Selective Microarray Biological Material Elution
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Solution Overview
Problem
Current microarray technologies face challenges in selectively isolating specific biological materials from the array surface due to the high number of target sequences bound, requiring the denaturation of all bound sequences to retrieve the target sequence of interest.
Innovation Solution
The method involves applying a denaturing buffer to a specific spatial region on the microarray slide, combined with heat or light to selectively release the biological material, while minimizing the elution of non-selected material, using a system that includes a microarray scanner, dispensing instrument, and heating device to precisely target and recover the material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a denaturing buffer is applied to the entire microarray surface to retrieve target sequences, then the target sequences can be recovered, but all non-selected biological material is also eluted causing contamination
Solution Approach 1:
The patent applies denaturing buffer only to specific spatial regions containing target sequences rather than the entire microarray surface. This localized application is achieved through precise positioning systems and targeted dispensing methods, ensuring that only biological material at the desired locations is eluted while material at other locations remains intact and bound to the surface.
Solution Approach 2:
The microarray surface is divided into distinct spatial regions, and the denaturing process is applied segmentally to only those regions containing target sequences. This segmentation allows selective recovery of specific biological materials while leaving other regions unaffected, thereby preventing cross-contamination.
2Productivity
If heat is applied to denature all bound sequences for target retrieval, then the target sequences are released, but the process requires denaturation of the entire array reducing efficiency
Solution Approach 1:
Heating is applied locally to specific spatial regions containing target sequences rather than heating the entire microarray surface. This localized thermal denaturation is achieved through precise positioning and targeted heat application, releasing only the desired biological material while maintaining other regions in their bound state, thereby significantly reducing the time and energy required.
Solution Approach 2:
Instead of applying denaturation conditions to the entire array, the patent applies partial denaturation only to the extent necessary - specifically to the regions containing target sequences. This partial action approach optimizes the balance between retrieval efficiency and resource consumption.
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 approach allows for the efficient and selective retrieval of target sequences or biological materials from microarrays, enabling improved diagnostic utility and downstream applications like sequencing and hybridization, with reduced contamination and increased sensitivity.
Implementation Method 1
applying a denaturing buffer to the distinct spatial region to at least partially denature the selected nucleic acid material
Implementation Method 2
applying heat to the distinct spatial region to facilitate the denaturing of at least a portion of the selected nucleic acid material
Data Source
AI summary
The present invention provides methods and systems for selectively eluting biological material from a distinct spatial location on a microarray slide. In one aspect, for example, a method for recovering biological material coupled to a microarray slide can include selecting a biological material to be recovered from the microarray slide, finding the biological material within a distinct spatial region on the microarray slide surface, and eluting at least a portion of the selected biological material from the distinct spatial region without eluting substantial amounts of non-selected biological material from regions of the microarray slide that are not within the distinct spatial region.