Methacrylamide-modified oligonucleotides for stable 3D biochip copolymerization
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Solution Overview
Problem
Current methods for manufacturing 3D DNA microarrays, such as co-polymerization, require oligonucleotide probes with functional groups containing unsaturated C═C bonds, but these probes are often modified post-synthesis, which is less efficient and less stable, especially when incorporating methacrylamide groups.
Innovation Solution
The development of new methacrylic modifiers that can be incorporated during solid-phase synthesis at the 3′-, 5′-, or internal positions of oligonucleotides, enabling stable and efficient copolymerization with acrylamide and methacrylamide gel monomers, facilitating the creation of biochips through a progressive co-polymerization method.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If post-synthesis modification is used to incorporate methacrylamide groups, then oligonucleotide probes can be functionalized, but the stability and efficiency of copolymerization are reduced
Solution Approach 1:
The patent incorporates methacrylamide groups during the solid-phase synthesis process itself, rather than performing modification after synthesis. This preliminary incorporation ensures the functional groups are properly integrated into the oligonucleotide structure from the beginning, leading to improved stability and efficiency in subsequent copolymerization reactions for microarray fabrication
2Ease of manufacture
If acrylic function is incorporated during solid phase synthesis, then oligonucleotide probes can be functionalized, but the stability to spontaneous polymerization is reduced
Solution Approach 1:
The patent changes the chemical parameter of the functional group from acrylic to methacrylamide. This parameter change provides both the desired reactivity for copolymerization and improved stability against spontaneous polymerization, as methacrylamide groups are less prone to unintended polymerization while maintaining high efficiency during solid-phase synthesis incorporation
3Productivity
If methacrylamide groups are incorporated during solid phase synthesis, then copolymerization efficiency is improved, but the complexity of synthesis increases
Solution Approach 1:
The patent uses universal phosphoramidite building blocks that can be incorporated during standard solid-phase synthesis cycles. These multi-functional phosphoramidites serve both as oligonucleotide chain extenders and as carriers of the methacrylamide functional group, thereby improving copolymerization efficiency without adding significant complexity to the synthesis process
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 stable and efficient synthesis of methacrylated oligonucleotides, enhancing the production of biochips by integrating methacrylic functions during automated solid-phase synthesis, improving the stability and efficiency of the copolymerization process, and enabling the creation of high-quality microarrays for nucleic acid analyses.
Implementation Method 1
A co-polymerization method is one of the most progressive technologies for manufacturing three-dimensional (3D) DNA microarrays also called biochips. In this method oligonucleotide probes are mixed with acrylamide or methacrylamide, applied as a spot on a glass slide and then allowed to polymerize under UV-exposure forming a biochip.
Implementation Method 2
oligonucleotide probes are mixed with acrylamide or methacrylamide, applied as a spot on a glass slide and then allowed to polymerize under UV-exposure forming a biochip
Data Source
AI summary
New modifiers were synthesized for incorporation of a methacrylic function in 3′-, 5′- and internal positions of oligonucleotides during solid phase synthesis. A modifier was used for synthesis of 5′-methacrylated oligonucleotides for preparation of microarrays by a co-polymerization method.