Click Nucleic Acid Polymers for Trinucleotide Repeat Disorders
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Solution Overview
Problem
Current therapies for trinucleotide repeat disorders, such as Huntington's Disease, are inadequate, and conventional small-molecule drugs are ineffective in targeting intrinsic genetic diseases, while existing antisense oligonucleotide synthesis methods are resource-intensive and inefficient for preparing targeted therapies.
Innovation Solution
Development of Click Nucleic Acid (CNA) polymers using thiol-Michael and thiol-ene reactions to facilitate the assembly of oligomers and polymers with repeating sequences, allowing for the synthesis of CNA-polymers of varying lengths for targeted treatment of trinucleotide repeat disorders.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional small-molecule drugs are used to treat genetic diseases, then the treatment approach is simple, but the drugs are ineffective in targeting intrinsic genetic diseases
Solution Approach 1:
The patent uses antisense oligonucleotides as intermediary molecules that bind to specific mRNA sequences through complementary base pairing, preventing translation of mutant proteins. This intermediary approach allows small molecules to indirectly target genetic diseases by modulating gene expression rather than directly interacting with genetic material
Solution Approach 2:
The invention employs composite oligonucleotide structures combining different nucleotide analogs (e.g., phosphorothioate backbone with modified bases) to enhance stability, specificity, and cellular uptake while maintaining the ability to target genetic sequences
2Reliability
If conventional antisense oligonucleotide synthesis methods are used, then targeted therapy can be achieved, but the synthesis process is resource-intensive and inefficient
Solution Approach 1:
The patent divides the synthesis process into modular stages using repeating oligonucleotide units (e.g., 6-12 mer segments) that can be synthesized independently and then assembled through ligation. This segmentation allows parallel synthesis of multiple units and reduces the resource burden of synthesizing long sequences in a single step
Solution Approach 2:
The invention performs preliminary synthesis of standardized oligonucleotide building blocks with pre-installed functional groups (e.g., phosphoramidite groups, ligation sites) that can be rapidly assembled. This preliminary preparation of modular units accelerates the overall synthesis process and reduces resource requirements during final assembly
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 CNA-polymers provide a facile and controlled process for preparing antisense polymers that can effectively target and treat trinucleotide repeat disorders, offering a promising therapeutic approach with potential for treating conditions like Huntington's Disease and other genetic disorders.
Implementation Method 1
The thiol group can undergo a Michael addition to the vinyl group to form a dimer
Implementation Method 2
The thiol group can undergo a thiol-ene reaction with the vinyl group to form oligomers and polymers
Data Source
AI summary
Disclosed herein are Click Nucleic Acid Polymers (CNA-polymers) that comprise repeating dimer, trimer and tetramer units. The disclosed polymers can be used for antisense applications, for example, in treatment of “trinucleotide repeat disorders, i.e., Huntington's Disease and the like.