Artificial Nucleosides Orthogonal Hybridization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing nucleic acid technologies face challenges in designing multiple sequences with the same melting temperature (Tm) for applications like microarrays and nano-fabrications, and in preventing undesired hybridizations, particularly due to the lack of nucleic acid sequences that do not hybridize with natural DNA or RNA.
Innovation Solution
Development of artificial nucleosides and nucleotides, specifically 2-((nucleobase)methyl)butane-1,3-diols, which form oligomers with unique stereoisomers that can self-hybridize without forming heteroduplexes with DNA, allowing for the creation of oligonucleotides with enhanced stability and reduced affinity for natural nucleic acids.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If natural nucleic acid sequences are used for hybridization applications, then hybridization capability is achieved, but non-specific hybridization with DNA or RNA occurs
Solution Approach 1:
The invention segments the nucleic acid structure by replacing the natural sugar-phosphate backbone with an artificial backbone structure (2-((nucleobase)methyl)butane-1,3-diols). This segmentation creates a fundamentally different structural identity that prevents recognition by natural DNA/RNA hybridization mechanisms while maintaining self-complementary base pairing capability.
Solution Approach 2:
The invention creates a composite nucleic acid structure by combining natural nucleobases with an artificial sugar-like backbone (2-((nucleobase)methyl)butane-1,3-diols). This composite approach allows the molecule to retain base-pairing functionality while acquiring new structural properties that prevent hybridization with natural nucleic acids.
2Adaptability or versatility
If multiple nucleic acid sequences with the same Tm are designed, then application versatility is improved, but design complexity increases
Solution Approach 1:
The invention changes the fundamental structural parameters of the nucleic acid backbone, which fundamentally alters the thermodynamic properties and hybridization behavior. This parameter change enables the design of multiple sequences with controlled Tm values without the cross-hybridization issues that complicate natural nucleic acid design.
3Reliability
If artificial nucleic acid backbones are developed to prevent DNA/RNA hybridization, then hybridization orthogonality is achieved, but manufacturing complexity increases
Solution Approach 1:
The invention creates a simplified copy of the nucleic acid structure that uses the same base-pairing logic as natural nucleic acids but with a modified backbone. This copying approach allows for easier synthesis compared to completely novel structures, as standard base chemistry can be retained while only the backbone synthesis needs to be adapted.
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 artificial nucleosides enable the formation of stable homoduplexes and self-hybridizing oligomers that do not hybridize with DNA, addressing the need for orthogonal nucleic acids that prevent non-specific interactions, thus facilitating diagnostic and chemotherapeutic applications.
Implementation Method 1
The artificial nucleosides enable the formation of stable homoduplexes and self-hybridizing oligomers that do not hybridize with DNA
Data Source
AI summary
Artificial nucleosides including 2-methyl-nucleobase-substituted butane-1,3-diol nucleosides are disclosed. Four different stereoisomers of such nucleosides are possible. Oligonucleotides made up of the artificial nucleosides form homoduplexes of greater stability than DNA duplexes and have a reduced ability to hybridize to DNA or RNA.