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Ligand-RNA interaction assay based on size-selective fluorescence core-shell nanocomposite
Jun Li1, Man Wang1, Yao-Yao Fan1
1Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, 620 West Chang'an Street, Xi'an, 710119, Shaanxi, China.
Analytical and Bioanalytical Chemistry
|August 13, 2020
Summary
This study introduces a novel, cost-effective fluorescent nanomaterial for ligand-RNA interaction assays. The method efficiently screens potential drug candidates by detecting interactions with TAR RNA and identifying Tat protein antagonists.
Area of Science:
- Biochemistry
- Nanotechnology
- Drug Discovery
Background:
- Traditional dye-labeled fluorescence methods for ligand-RNA assays are complex, costly, and susceptible to steric hindrance.
- Fluorescent nanomaterials present a simpler, more cost-effective alternative with enhanced screening capabilities.
Purpose of the Study:
- To develop and validate a novel assay using CdTe@ZIF-8 core-shell nanocomposites for ligand-TAR RNA interaction.
- To establish strategies for distinguishing RNA-binding ligands and screening Tat protein antagonists.
Main Methods:
- Utilized CdTe@ZIF-8 core-shell nanocomposites as fluorescence signal transducers.
- Developed size-selective assays based on fluorescence recovery and competitive displacement strategies.
- Tested eight known and unknown TAR RNA-binding ligands.
Main Results:
- Successfully distinguished known RNA-binding partners from test ligands.
- Effectively screened for Tat antagonists using the developed assay strategies.
- Demonstrated the versatility of the method for different ligand-quenching properties.
Conclusions:
- The CdTe@ZIF-8 nanocomposite-based assay offers a simple, effective, and low-cost approach for ligand-RNA interaction studies.
- This strategy shows significant potential for high-throughput drug screening applications.
- The method provides a robust platform for identifying compounds that interact with specific RNA targets.
