RNA-Capturing Microsphere Particles (R-CAMPs) for Optimization of Functional Aptamers

Area of Science:

• Biotechnology
• Molecular Biology
• Nucleic Acid Chemistry

Background:

• RNA aptamers are crucial for nucleic acid nanoarchitectures and biotechnological applications.
• Aptamer affinity is sensitive to solution conditions, necessitating optimization for specific uses.
• Current optimization methods can be complex and time-consuming.

Purpose of the Study:

• To develop an efficient method for re-selecting aptamers from partially randomized libraries.
• To simplify and expedite the optimization of RNA aptamers for diverse applications.
• To demonstrate the utility of the developed method under varied solution conditions.

Main Methods:

• Development of RNA-capturing microsphere particles (R-CAMPs) displaying unique RNA clones.
• Utilizing fluorescence-activated cell sorting to isolate functional aptamer-linked R-CAMPs.
• Performing re-selection experiments with a library of 16,384 sequences under varying conditions.

Main Results:

• Successful re-selection of functional aptamers, including the wild-type, in a single round.
• Demonstrated selection of aptamers under high ethylene glycol concentrations, indicating adaptability to different environments.
• The R-CAMPs technology enables selection of RNAs based on a wide range of functions.

Conclusions:

• The R-CAMPs method provides an efficient platform for aptamer re-selection and optimization.
• This technology is applicable to various solution conditions, enhancing its utility for diverse biotechnological applications.
• The developed method facilitates the selection of functional RNAs for novel applications.