Click-Labeled Nucleosides and Phosphoramidites for Copper-Free Quantum Sensing
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Solution Overview
Problem
There is a need for alternative click-labeled bases, nucleosides, and phosphoramidites to enable quantum sensing of binding events, as existing methods suffer from ambiguity in detection and require copper-catalyzed reactions that can be toxic and difficult to control.
Innovation Solution
The development of click-labeled nucleosides and phosphoramidites, such as DBCO and TCO-modified uridine bases, which allow for copper-free click chemistry reactions, enabling simpler and more controlled synthesis of spin-labeled oligonucleotides for quantum sensing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If copper-catalyzed click chemistry reactions are used to label nucleosides and phosphoramidites, then the labeling efficiency and reaction rate are improved, but toxicity increases and reaction control becomes difficult
Solution Approach 1:
The patent removes the copper catalyst from the click chemistry reaction system, extracting the harmful element while preserving the core labeling function. The copper-free azide-alkyne cycloaddition enables toxic-free labeling of nucleosides and phosphoramidites, directly resolving the contradiction between labeling efficiency and toxicity.
Solution Approach 2:
The patent introduces strain-promoted click chemistry as an intermediary mechanism that replaces copper catalysis. The ring strain in the cyclooctyne moiety serves as the driving force for the reaction, eliminating the need for toxic copper catalysts while maintaining efficient labeling of nucleic acids.
2Ease of operation
If copper-catalyzed reactions are used for click labeling, then the reaction can proceed under standard conditions, but reaction control becomes difficult and purification becomes complex
Solution Approach 1:
By removing copper catalysts from the reaction system, the patent eliminates the need for complex purification steps required to remove metal residues. The copper-free click chemistry produces cleaner reaction mixtures that require simpler purification processes while maintaining full reaction control.
Solution Approach 2:
The patent employs biocompatible, non-toxic reagents that do not require extensive purification. The use of strain-promoted click chemistry with copper-free conditions allows for simpler, more disposable-friendly protocols that reduce both operational complexity and purification demands.
3Measurement precision
If alternative click-labeled bases and nucleosides are developed for quantum sensing, then detection precision is improved, but manufacturing complexity increases
Solution Approach 1:
The patent develops universal click-labeled nucleosides and phosphoramidites that can be used across multiple quantum sensing applications. The standardized copper-free click chemistry platform enables consistent, precise labeling for various detection scenarios while maintaining manageable synthesis complexity through reusable protocols and reagents.
Solution Approach 2:
The patent modifies the chemical parameters of nucleosides by introducing azide or alkyne functional groups at specific positions, enabling precise quantum sensing capabilities. These structured modifications are achieved through controlled synthesis steps that balance enhanced detection precision with manageable manufacturing complexity.
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 compounds facilitate efficient, biocompatible, and easily controlled quantum sensing of binding events by omitting copper catalysts, reducing toxicity and improving reaction control and purification processes.
Implementation Method 1
reacting the compound with 2-cyanoethyl N,N,N′,N′-tetraisopropylphosphorodiamidite and pyridine trifluoroacetic acid in dichloromethane
Implementation Method 2
reacting the oligonucleotide with a reagent comprising a payload moiety and an azide moiety
Implementation Method 3
the detection of a binding event at a single-molecule level via an electron paramagnetic resonance measurement (EPR) signature
Data Source
AI summary
Click-labeled uridine bases, nucleosides, and phosphoramidites are provided, including improved methods of synthesis, oligonucleotides comprising the click-labeled nucleosides, methods of synthesizing spin-labeled oligonucleotides using click-labeled nucleotides, and spin-labeled oligonucleotides comprising click-labeled nucleosides.