Germanium-Based Matrix for Nucleic Acid Purification
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Solution Overview
Problem
Current nucleic acid purification methods, particularly those using silica surfaces and chaotropic agents, face challenges with FFPE samples, including manual errors and disruption of nucleic acids into short fragments, which complicates molecular analysis and isolation.
Innovation Solution
A matrix material comprising Germanium or Lead, or their salts, such as Germanium oxide, is used for nucleic acid purification, offering enhanced binding capabilities and magnetic responsiveness, allowing for efficient isolation and purification, especially in FFPE samples, through the use of magnetically responsive beads with an iron oxide core and Germanium dioxide coating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If silica surfaces and chaotropic agents are used for nucleic acid purification, then binding capability is achieved, but manual errors occur and nucleic acids are disrupted into short fragments
Solution Approach 1:
The patent changes the chemical composition parameters of the matrix material from silica-based to Germanium/Sn/Pb-based materials. This parameter change fundamentally alters the binding mechanism, allowing nucleic acid purification without the harmful fragmentation effects associated with silica-chaotropic agent interactions while maintaining effective binding capability.
Solution Approach 2:
The invention employs composite material structures, specifically combining magnetic cores (for automated handling) with Germanium/Sn/Pb-based surfaces (for nucleic acid binding). This composite approach enables both automated processing to reduce manual errors and effective nucleic acid purification without fragmentation.
2Ease of operation
If manual processing is used for nucleic acid isolation, then flexibility is maintained, but manual errors increase
Solution Approach 1:
The patent replaces manual mechanical processing with magnetically-responsive automated handling systems. The Germanium/Sn/Pb-based matrix materials are designed to be magnetically responsive, enabling automated separation and purification processes that eliminate manual errors while maintaining operational flexibility through programmable control.
3Reliability
If silica-based matrices are used, then binding function is provided, but automation compatibility is limited
Solution Approach 1:
The patent creates matrix materials with multiple functions: nucleic acid binding (through Germanium/Sn/Pb surface properties) and magnetic responsiveness (through integrated magnetic cores). This multi-functionality enables both effective purification and full compatibility with automated handling systems, eliminating the limitation of traditional silica-based matrices.
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 Germanium-based matrix effectively binds and purifies nucleic acids, even from short fragments, reducing manual errors and facilitating automated processing, thereby improving the efficiency and accuracy of nucleic acid isolation from challenging sample types like FFPE tissues.
Implementation Method 1
The latter denature biomolecules by disrupting the hydration shell surrounding them. This allows positively charged (e.g., sodium ions provided with the binding buffer) ions to form a salt bridge between the negatively charged silica and the negatively charged DNA backbone.
Implementation Method 2
The latter denature biomolecules by disrupting the hydration shell surrounding them.
Implementation Method 3
a low ionic strength buffer ('low salt buffer') is being used to disrupt theses bindings by solubilizing the nucleic acids, in order to elute the nucleic acids.
Data Source
AI summary
The present invention relates to matrix materials suitable for use in purifying and/or isolating nucleic acids from a biological sample, which matrix comprises a surface comprising at least one element selected from the group consisting of Germanium, Tin and/or Lead, or at least one salt thereof, and methods related therewith.