Evolution of Cell-Type-Specific RNA Aptamers via Live Cell-Based SELEX

Area of Science:

• Biotechnology
• Molecular Biology
• Genomics

Background:

• Live cell-based SELEX (Systematic Evolution of Ligand EXponential enrichment) is effective for aptamer discovery against cell surface targets.
• Challenges exist in obtaining native conformations of certain cell surface proteins for in vitro selection.
• Aptamers offer specific binding capabilities for cellular targets.

Purpose of the Study:

• To describe a generalized procedure for evolving cell type-specific RNA aptamers.
• To target cell membrane-bound proteins using live cell-based SELEX.
• To combine SELEX with high-throughput sequencing and bioinformatics for aptamer evolution.

Main Methods:

• Live cell-based SELEX strategy.
• High-throughput sequencing (HTS) for aptamer identification.
• Bioinformatics analysis for aptamer selection and characterization.

Main Results:

• Successful evolution of RNA aptamers targeting cell membrane-bound proteins.
• Demonstration of aptamer specificity for target cell populations.
• Identification of aptamers suitable for complex or modified cell surface proteins.

Conclusions:

• Live cell-based SELEX is a powerful approach for aptamer discovery against challenging cell surface targets.
• The described method facilitates the identification of aptamers for specific cell types.
• This technique enhances the development of aptamers for diagnostic and therapeutic applications.