Nanoparticle-Oligonucleotide Hybrid Structures for High-Density DNA Functionalization
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Solution Overview
Problem
Current methods face challenges in achieving high-density DNA functionalization on nanoparticles, limiting their applications in bio-imaging, sensing, and drug delivery due to difficulties in obtaining high-density DNA on nanoparticle surfaces.
Innovation Solution
The development of nanoparticle-amphiphilic oligonucleotide block co-polymer hybrid structures, where amphiphilic block co-polymers self-assemble with nanoparticles to create a high-density nucleic acid layer, enhancing DNA binding properties and selectivity, even at low salt concentrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional methods are used to functionalize nanoparticles with DNA, then the nanoparticle surface can be modified, but high-density DNA functionalization cannot be achieved
Solution Approach 1:
The patent introduces an amphiphilic block copolymer as an intermediary between the nanoparticle and DNA. The copolymer contains a hydrophobic block that interacts with the nanoparticle surface and a hydrophilic block that presents DNA strands, thereby mediating the functionalization process and enabling high-density DNA assembly on the nanoparticle surface
Solution Approach 2:
The invention creates a composite structure consisting of nanoparticle-core, amphiphilic block copolymer intermediate layer, and DNA outer layer. This multi-component composite material combines the advantages of each component to achieve high-density DNA functionalization that cannot be obtained by conventional single-step methods
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
These hybrid structures exhibit exceptionally high binding capabilities to complementary nucleic acids, differentiate single base mismatches, and maintain selectivity under low salt conditions, making them suitable for advanced DNA detection and delivery applications.
Implementation Method 1
amphiphilic block co-polymers self-assemble with nanoparticles to create a high-density nucleic acid layer
Implementation Method 2
exceptionally high binding capabilities to complementary nucleic acids
Data Source
AI summary
The invention relates to hybrid structures comprising an amphiphilic nucleic acid-block co-polymer assembly on the exterior and a nanoparticle core, and methods of use thereof.