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A New Toolkit for Evaluating Gene Functions using Conditional Cas9 Stabilization
Published on: September 2, 2021
Competitive kinetic mechanisms in one-pot isothermal amplification-CRISPR systems: From model construction to
Hao Jiang1, Junyuan Yang1, Anyi Li1
1School of Medical Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China.
Talanta
|June 22, 2026
Summary
This study introduces a quantitative kinetic framework to overcome challenges in one-pot isothermal amplification and CRISPR-based detection. The models optimize probe design and reaction conditions for enhanced molecular diagnostic platforms.
Area of Science:
- Molecular Biology
- Biotechnology
- Biochemistry
Background:
- Integrating real-time molecular diagnostics with isothermal amplification and CRISPR detection requires streamlined, single-tube methods.
- Temporal incompatibilities, such as premature CRISPR activation, hinder efficient amplification and lead to primer degradation.
Purpose of the Study:
- To establish a quantitative competitive kinetic framework for enzyme-free isothermal amplification-CRISPR one-pot systems.
- To identify and address inhibitory mechanisms in these integrated systems.
Main Methods:
- Utilized hybridization chain reaction (HCR) and catalytic hairpin assembly (CHA) as models for enzyme-free isothermal amplification.
- Developed kinetic equations to quantitatively describe "pre-activation-degradation inhibition" and "substrate competition inhibition".
- Conducted systematic experimental validation of key parameters including DNA activator, reporter probe, hairpin probe, and ribonucleoprotein (RNP) complex concentrations.
Main Results:
- Identified two core inhibitory mechanisms: pre-activation-degradation and substrate competition.
- Derived kinetic equations accurately described these inhibitory interactions.
- Experimental validation confirmed the reliability and predictive accuracy of the proposed kinetic models.
Conclusions:
- Provided mechanistic insights into one-pot HCR/CHA-CRISPR coupling.
- Identified conditions to optimize assay performance and enhance sensitivity.
- Offered a theoretical foundation and experimental guidance for designing and optimizing enzyme-free isothermal amplification-CRISPR one-pot platforms.
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